Draw the product that is formed when the compound shown below is treated with an excess of hydrogen gas and a platinum catalyst. Interactive 30 display mode (i)

Answers

Answer 1

The compound that is shown below is benzene ([tex]C_6H_6[/tex]). the correct option is (ii).

A platinum catalyst is used to catalyze the reaction between benzene and hydrogen gas. With excess hydrogen gas and a platinum catalyst, benzene can be converted to cyclohexane ([tex]C_6H_{12}[/tex]) via the process of hydrogenation.

Here is the diagrammatic representation of the product that is formed when the compound shown below is treated with an excess of hydrogen gas and a platinum catalyst:

Option (ii) is the correct answer as it depicts the diagrammatic representation of the product that is formed when the compound shown below is treated with an excess of hydrogen gas and a platinum catalyst:

Option (i) is incorrect as it is the structure of benzene, which is the starting compound.

Option (iii) is incorrect as it depicts cyclohexene, which is formed from benzene upon treatment with hydrogen gas and a nickel catalyst.

Therefore, the correct option is (ii).

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Draw The Product That Is Formed When The Compound Shown Below Is Treated With An Excess Of Hydrogen Gas

Related Questions

After the atmospheric depositions of nitrate were eliminated, PO4 increased in outflowing streams from several marshes in the region. Why?

Answers

The increase in phosphate (PO₄) levels in outflowing streams from several marshes after eliminating atmospheric depositions of nitrate can be explained by the process known as "nitrogen limitation."

Nitrogen limitation in ecosystems;

Nitrogen (N) and phosphorus (P) are two essential nutrients that often limit primary production in ecosystems. In some ecosystems, such as marshes, nitrogen is the limiting nutrient, meaning that the availability of nitrogen controls the growth and productivity of organisms.

Nitrogen deposition elimination;

When atmospheric depositions of nitrate, which is a common form of nitrogen, are eliminated, the supply of nitrogen to the marshes is reduced. This reduction in nitrogen availability leads to nitrogen limitation, causing changes in nutrient dynamics within the ecosystem.

Effects of nitrogen limitation;

Nitrogen limitation triggers a series of ecological responses, including the alteration of nutrient uptake and assimilation by plants and microorganisms. In this case, the reduced nitrogen availability causes a shift in nutrient competition and availability, favoring the uptake and release of phosphorus.

Phosphorus release and increased PO₄ levels;

Under nitrogen-limited conditions, plants and microorganisms adjust their nutrient uptake strategies to maximize phosphorus acquisition. They allocate more resources towards acquiring phosphorus, which can include releasing enzymes and organic compounds that break down organic matter and release bound phosphorus.

As a result, the increased phosphorus release and enhanced microbial activity lead to higher levels of phosphate (PO₄) in the outflowing streams from the marshes. The phosphorus that was previously limited by nitrogen becomes more available for uptake and transport through the water system.

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(f) Assuming an atmospheric scale height of 7.4 km and standard atmospheric pressure of 1.01×10 5
Pa, determine the altitude where the air pressure reduces to 5.0×10 4
Pa. (g) Name greenhouse gases with dominant contributions to the natural greenhouse effect and its anthropogenic change. Briefly explain your answer. (h) Calculate the mass of moist air that has 8 Nitrogen molecules, 3 Oxygen molecules and 3 Water Vapour molecules. From the Periodic table, Nitrogen molar mass is 14 g/mol, Oxygen 16 g/mol, Hydrogen 1 g/mol.

Answers

F- Altitude where air pressure reduces to 5.0×10⁴ Pa: 14.8 km.

g) Dominant greenhouse gases: H₂O, CO₂, CH₄, O₃; Anthropogenic changes increase CO₂, CH₄, N₂O.

h) Mass of moist air with 8 N₂ molecules, 3 O₂ molecules, and 3 H₂O molecules: 134 grams.

F: Using the formula Altitude = Scale Height × ln(P₀/P₁), where Scale Height = 7.4 km, P₀ = 1.01×10⁵ Pa, and P₁ = 5.0×10⁴ Pa, we can calculate the altitude.

Altitude = 7.4 km × ln(1.01×10⁵ Pa / 5.0×10⁴ Pa) ≈ 14.8 km

h)

To calculate the mass of moist air containing 8 Nitrogen molecules, 3 Oxygen molecules, and 3 Water Vapor molecules, we need to determine the total number of moles for each molecule and then calculate the total mass.

Molar mass of Nitrogen (N₂) = 14 g/mol

Molar mass of Oxygen (O₂) = 16 g/mol

Molar mass of Water Vapor (H₂O) = 18 g/mol

Number of moles of Nitrogen = 8 molecules / 2 = 4 moles

Number of moles of Oxygen = 3 molecules / 2 = 1.5 moles

Number of moles of Water Vapor = 3 moles

Total mass = (4 moles × 14 g/mol) + (1.5 moles × 16 g/mol) + (3 moles × 18 g/mol)

= 56 g + 24 g + 54 g

= 134 g

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A compound containing one functional group has R absorption bands at 3300 cm −1
(strong, sharp) and 2150 cm −1
. Which substance best matches this information? A) hexan-2-one B) hexan-3-ol C) hex-1-ene D) hexane E) Hex-1-yne

Answers

The substance that best matches the given information of absorption bands at 3300 cm⁻¹ (strong, sharp) and 2150 cm⁻¹ is B) hexan-3-ol.

The absorption bands at 3300 cm⁻¹ indicate the presence of an -OH group (alcohol functional group) in the compound. This is characteristic of hexan-3-ol, which has the structural formula CH₃(CH₂)₃CH₂OH. The strong, sharp absorption at 3300 cm⁻¹ corresponds to the stretching vibrations of the O-H bond in the alcohol.

On the other hand, the absorption band at 2150 cm⁻¹ is not directly indicative of any particular functional group. This band is commonly associated with triple bonds (C≡C) or nitriles (C≡N). However, none of the given options contain these functional groups.

Therefore, based on the absorption bands provided, hexan-3-ol (B) is the substance that best matches the given information.

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The normal boiling point of a substance is:
A. Always 100 C
B. The temperature at which a liquid boils
C. The boiling point of a substance when the external pressure equals 1 atm.
D. The temperature when the vapor pressure of a liquid is equal to the external pressure

Answers

The normal boiling point is when a liquid's vapor pressure matches the external pressure, not always 100°C.

The normal boiling point of a substance is the temperature at which the vapor pressure of a liquid is equal to the external pressure applied to it. At this temperature, the liquid undergoes a phase change and transforms into a gas. The normal boiling point is a characteristic property of a substance and can vary depending on factors such as intermolecular forces and molecular structure. It is not always 100°C, as option A suggests. Additionally, it is not simply the temperature at which a liquid boils (option B) because boiling can occur at temperatures other than the normal boiling point. The normal boiling point corresponds to option D, where the vapor pressure equals the external pressure.

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Chromium metal can be produced from the high-temperature reaction of chromium (III) oxide with silicon, according to the following reaction. Calculate the mass of silicon required to prepare 250.0grams of chromium metal. 2Cr 2
O 3
(s)+3Si(l)→4Cr(l)+3SiO 2
(s)

Answers

To prepare 250.0 grams of chromium metal from chromium (III) oxide, approximately 101.49 grams of silicon is required.

In the given reaction, the balanced equation shows the stoichiometric relationship between chromium (III) oxide (Cr₂O₃) and silicon (Si). According to the equation:

2Cr₂O₃(s) + 3Si(l) → 4Cr(l) + 3SiO₂(s)

The molar ratio between Cr₂O₃ and Si is 2:3, which means that for every 2 moles of Cr₂O₃, we need 3 moles of Si.

First, we need to convert the mass of chromium metal (given as 250.0 grams) to moles. The molar mass of chromium (Cr) is calculated as follows:

Molar mass of Cr = 52.00 g/mol

Moles of chromium metal = 250.0 g / 52.00 g/mol ≈ 4.81 moles

Since the molar ratio between Cr and Si is 4:3, we can determine the moles of Si required using the ratio:

Moles of Si = (3/4) × Moles of Cr = (3/4) × 4.81 moles ≈ 3.61 moles

Now, we can calculate the mass of silicon using its molar mass. The molar mass of silicon (Si) is:

Molar mass of Si = 28.09 g/mol

Mass of silicon = Moles of Si × Molar mass of Si

                     = 3.61 moles × 28.09 g/mol ≈ 101.49 grams

Therefore, to prepare 250.0 grams of chromium metal, approximately 101.49 grams of silicon is required.

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Answer all parts or thumbs down :(
7 of 15 The net ionic hydrolysis equation for aqueous ammonium chloride is \[ \begin{array}{l} \mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightleftarrows \mathrm{H}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathr

Answers

The net ionic hydrolysis equation for aqueous ammonium chloride is: NH₄Cl(aq) ⇄ NH₄⁺(aq) + Cl⁻(aq). Adding acid to the buffer, NH3-NH4+, will produce this (net ionic) reaction: H⁺(aq) + NH₃(aq) ⇄ NH₄⁺(aq).

Ammonium chloride separates into ammonium ions (NH₄⁺) and chloride ions (Cl⁻) in an aqueous solution.

The appropriate net ionic hydrolysis equation, since the compound's dissociation does not involve the hydroxide ion (OH⁻):

NH₄Cl(aq) ⇄ NH₄⁺(aq) + Cl⁻(aq)

Adding acid to the buffer, NH₃-NH₄⁺, will produce this (net ionic) reaction:

H⁺(aq) + NH₃(aq) ⇄ NH₄⁺(aq)

The acid interacts with the ammonia (NH₃) in the NH₃-NH₄⁺ buffer system to produce ammonium ions (NH₄⁺). This preserves the buffer's ability to withstand pH variations. The right net ionic reaction is, thus, option d.

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The given question is incomplete, so the most probable complete question is,

Part A: The net ionic hydrolysis equation for aqueous ammonium chloride is:

a.H2O(l)⇄H+(aq)+OH-(aq)

b.NH4+(aq)+H2O(l)⇄NH4OH(aq)+H+(aq)

c. NH4OH(aq)+HCl(aq)⇄NH4Cl(aq)+H2O(l)

d. NH4Cl(aq)⇄NH4+(aq)+Cl-(aq)

Part B: Adding acid to the buffer, NH3-NH4+, will produce this (net ionic) reaction:

a. H+(aq)+OH-(aq)⇄H2O(l)

b. H+(aq)+NH4+(aq)⇄NH3(aq)+H2(g)

c. H+(aq)+NH4+(aq)⇄NH52+(aq)

d. H+(aq)+NH3(aq)⇄NH4+(aq)

A chemist determines by measurements that \( 0.055 \) moles of hydrogen gas participate in a chemical reaction. Calculate the mass of hydrogen gas that participates. Round your answer to 2 significant

Answers

The mass of hydrogen gas that participates in the chemical reaction is 0.11 g.

A mole is a unit of measurement for the amount of a substance. It is defined as the amount of a substance that contains as many elementary entities (such as atoms, molecules, ions, electrons) as there are atoms in 12 grams of pure carbon-12. 1 mole of any substance contains Avogadro's number of particles or entities,

which is approximately equal to [tex]6.022 \times 10^2^3[/tex]. Hence, the molar mass of a substance is the mass of one mole of that substance, expressed in grams.

To determine the mass of hydrogen gas that participates in the chemical reaction, we need to use the mole concept. Given:

Amount of hydrogen gas that participates = 0.055 moles of hydrogen gas. Molar mass of hydrogen gas (H2) = 2.016 g/mol (i.e., 1 mole of hydrogen gas weighs 2.016 g)

We can use the following formula to calculate the mass of hydrogen gas that participates in the chemical reaction: mass = number of moles x molar mass mass = 0.055 mol x 2.016 g/mol= 0.11112 g

The mass of hydrogen gas that participates in the chemical reaction is 0.11112 g. We can round off the answer to 2 significant figures, which gives us a final answer of 0.11 g.

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Consider the following expression 2NH3−⋯>N2+3H2 write the correct rate equation for the reaction. Rate =−1/2Δ[NH3]/Δt=Δ[N2]/Δt=1/3Δ[H2]/Δt All of the Above none Needs more information Rate =1/2Δ[NH3]/Δt=−Δ[N2]/Δt=−1/3Δ[H2]/Δt

Answers

The correct rate equation for the reaction is Rate = −1/2Δ[NH3]/Δt = Δ[N2]/Δt = 1/3Δ[H2]/Δt.

In the given expression 2NH3 → N2 + 3H2, we can determine the rate equation by comparing the stoichiometric coefficients of the reactants and products.

The rate equation expresses the rate of change of concentration of a reactant or product with respect to time. In this case, we need to consider the change in concentration of NH3, N2, and H2 over time (Δ[NH3]/Δt, Δ[N2]/Δt, Δ[H2]/Δt) to determine the correct rate equation.

From the balanced equation, we see that the coefficients in front of NH3, N2, and H2 are 2, 1, and 3, respectively. The rate equation should reflect the stoichiometry of the reaction.

The correct rate equation is:

Rate = −1/2Δ[NH3]/Δt = Δ[N2]/Δt = 1/3Δ[H2]/Δt

This means that the rate of the reaction is proportional to the rate of change of NH3 concentration with a coefficient of -1/2, the rate of change of N2 concentration with a coefficient of 1, and the rate of change of H2 concentration with a coefficient of 1/3.

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Legumes, such as clover and acacias, "fixx" nitrogen with the aid of bacteria. Only bacteria have this capability, which requires the presence of a nitrogenase enzyme to catalyse the energy-consuming

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Legumes, which are a group of plants that include clover and acacias, "fix" nitrogen through a process known as nitrogen fixation. Nitrogen fixation is the process of converting nitrogen gas (N2) into a form that can be utilized by plants and other living organisms.

Nitrogen gas makes up about 78% of the earth's atmosphere, but it is relatively unreactive and cannot be utilized by most living organisms directly.


Nitrogen fixation is a critical process because nitrogen is an essential component of many important biological molecules such as proteins, nucleic acids, and chlorophyll. Without nitrogen fixation, most plants would not be able to grow and survive.


Legumes and other nitrogen-fixing plants are able to "fix" nitrogen with the aid of bacteria. The bacteria responsible for nitrogen fixation live in specialized structures called nodules that form on the roots of legumes and other nitrogen-fixing plants.

The bacteria enter the plant root and form a symbiotic relationship with the plant, where the plant provides the bacteria with a source of energy (in the form of carbohydrates) and the bacteria provide the plant with fixed nitrogen.


The process of nitrogen fixation requires the presence of a nitrogenase enzyme, which is produced by the bacteria. Nitrogenase is an energy-intensive enzyme that requires a lot of energy to function, and it is only present in bacteria that are capable of nitrogen fixation.

Because of this, only bacteria have the capability to fix nitrogen, and legumes and other nitrogen-fixing plants rely on these bacteria to provide them with the nitrogen they need to grow and thrive.

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organic chemistry. please help
Propose an efficient synthesis for the following transformation: The transformation above can be performed with some reagent or combination of the reagents listed below. Glve the necessary reagent(s)

Answers

To propose an efficient synthesis for the given transformation, we would need more specific information about the starting material and desired product.

Without this information, it is difficult to provide a tailored answer. However, some commonly used reagents in organic chemistry that can be considered for various transformations include:

Grignard reagents: These are organomagnesium compounds that can be used to form carbon-carbon bonds by reacting with carbonyl compounds.

Nucleophiles: Such as alkoxides (RO⁻) or amines (NH₂⁻), which can react with alkyl halides to form carbon-nitrogen or carbon-oxygen bonds, respectively.

Reducing agents: Examples include lithium aluminum hydride (LiAlH₄) or sodium borohydride (NaBH₄), which can reduce carbonyl compounds to alcohols.

Acidic or basic conditions: Utilizing acids or bases can catalyze various reactions, such as acid-catalyzed esterification or base-catalyzed elimination reactions.

It is important to consider the specific functional groups involved in the transformation and the desired reaction pathway to select the appropriate reagent(s) for an efficient synthesis.

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How many electrons are transferred in the reaction equation for
the combustion of acetone (C3H6O)? You will need to first write a
balanced combustion equation.

Answers

The 4 electrons are transferred in the reaction equation for the combustion of acetone (C3H6O).

The balanced chemical equation for the combustion of acetone is as follows:2C3H6O + 9O2 → 6CO2 + 6H2OThe balanced combustion equation is used to determine the number of electrons transferred in the reaction equation. Since this is a redox reaction, the transfer of electrons is important. Acetone (C3H6O) is oxidized to form carbon dioxide and water in the combustion process.

The oxidation state of oxygen remains the same throughout the reaction because it is the most electronegative element and it is bonded to itself. Each carbon atom in acetone (C3H6O) has an oxidation state of +2. In carbon dioxide, each carbon atom has an oxidation state of +4. This indicates that each carbon atom has lost two electrons. There are two carbon atoms in the reactant, which means a total of four electrons have been transferred.

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If Kc = 0.0026 for the reaction below at 298.0 K, then what is the value of Kp? (R = 0.0821 L-atm/mol.K.) 3 A (g) + B (g) C (g) + D (g)

Answers

The value of Kp for the reaction 3A (g) + B (g) ↔ C (g) + D (g) at 298.0 K can be determined using the ideal gas law and the relationship between Kc and Kp. The value of Kp is approximately 0.0303 atm⁻³.

The relationship between Kc and Kp for a gaseous reaction is given by the equation: Kp = Kc * (RT)Δn, where R is the gas constant (0.0821 L-atm/(mol·K)), T is the temperature in Kelvin, and Δn is the difference in the number of moles of gaseous products and reactants.

Kc = 0.0026

R = 0.0821 L-atm/(mol·K)

Temperature, T = 298.0 K

Coefficients of reactants and products:

A (g) has a coefficient of 3, B (g) has a coefficient of 1, and C (g) and D (g) have coefficients of 1 each.

From the stoichiometry of the balanced equation, Δn = (1 + 1) - (3 + 1) = -2

Plugging in the values into the equation for Kp, we have:

Kp = Kc * (RT)Δn

Kp = 0.0026 * (0.0821 L-atm/(mol·K) * 298.0 K)(-2)

Kp ≈ 0.0303 atm⁻³

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Write equations for the nuclear decay reactions:
a) beta decay of Bromine-84
b) alpha and gamma emission of Gd-152
3. What would the missing nuclide be for the following nuclear bombardment reaction?
147N + 42He  _____ + 11H
4. What amount and type of material would be required to stop a) alpha b) beta and c) gamma radiation?
5. The half life of carbon-14 is 5,730 years. If an artifact is found to have 6.25% of its original carbon-14
present, how many years old is the artifact?

Answers

a) Beta decay of Bromine-84:

Br-84 → Kr-84 + e- + νe

b) Alpha and gamma emission of Gd-152:

Gd-152 → Eu-148 + He-4 + γ

3. The missing nuclide for the nuclear bombardment reaction:

147N + 42He → 177Lu + 11H

4. a) Alpha radiation: Alpha particles are positively charged and heavy, so they have low penetration power.

b) Beta radiation: Beta particles can penetrate further than alpha particles.

c) Gamma radiation: Gamma rays have high energy and can penetrate most materials.

5. The artifact is approximately 22,920 years old.

a) Beta decay of Bromine-84:

Br-84 → Kr-84 + e⁻ + νe

b) Alpha and gamma emission of Gd-152:

Gd-152 → Eu-148 + He-4 + γ

3. The missing nuclide for the nuclear bombardment reaction:

147N + 42He → 177Lu + 11H

4. To stop radiation, different materials are used depending on the type of radiation:

a) Alpha radiation: Alpha particles are positively charged and heavy, so they have low penetration power. They can be stopped by a sheet of paper, clothing, or a few centimeters of air.

b) Beta radiation: Beta particles can penetrate further than alpha particles. They can be stopped by a thin sheet of aluminum or plastic, or a few millimeters of wood.

c) Gamma radiation: Gamma rays have high energy and can penetrate most materials. They require denser materials such as lead, concrete, or several centimeters of thick metal (depending on the energy of the gamma rays) to provide effective shielding.

5. The half-life of carbon-14 is 5,730 years. To determine the age of the artifact, we can use the concept of half-life.

Given that the artifact has 6.25% of its original carbon-14 present, we can calculate the number of half-lives that have passed:

Remaining fraction of carbon-14 = (Final amount / Initial amount) = 6.25% = 0.0625

Number of half-lives = log(remaining fraction) / log(0.5)

Number of half-lives = log(0.0625) / log(0.5) ≈ 4

Since each half-life is 5,730 years, we can calculate the age of the artifact:

Age = Number of half-lives × half-life time

Age = 4 × 5,730 years = 22,920 years

Therefore, the artifact is approximately 22,920 years old.

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AlSI 304 steel bar, 5 m long with square section ( 2×6 mm ), is stretched by effect of a applied mass up to 5.002 m. Determine the deformation and the value of the applied mass. The modulus of elasticity E (Young's modulus) is 196000MPa while the vielding stress σ y

=450MPa.

Answers

The deformation and the value of the applied mass for AlSI 304 steel bar is calculated as follows:The Young's modulus is given by,E = 196,000 MPaThe bar has a square cross-section of size 2 x 6 mm.

The original length of the bar is L = 5m

= 5000mm.The change in length of the bar is ΔL

= 5.002m - 5m = 2mm.The deformation is given by,δ

= ΔL / L δ

= 2mm / 5000mm δ

= 0.0004 or 0.04%The yield stress is given by,σ_y

= 450 MPaThe cross-sectional area of the bar is,A

= (2mm) × (6mm) A = 12 mm²The stress is given by,σ

= F / Awhere F is the applied force.The deformation is within the elastic limit and therefore the stress is proportional to strain. Therefore,σ / E = δ / L σ

= E × δ / L σ

= (196,000 MPa) × (0.0004) / (5000mm)σ

= 1.568 MPaThe applied force is given by,F

= σ × A F

= (1.568 MPa) × (12 mm²) F

= 18.82 N

Therefore, the deformation is 0.0004 and the value of the applied mass is 1.92 kg (18.82 N/9.81 m/s²).

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A student was given a \( 3.598-g \) sample of a mixture of potassium nitrate and potassium chloride and was asked to find the percentage of each compound in the mixture. He dissolved the sample and ad

Answers

The percentage of potassium nitrate in the mixture and the percentage of potassium chloride in the mixture are 68.16% and 31.84%.

Mass of sample = 3.598 g.

Let the mass of potassium nitrate be x gm in the mixture.

Thus, the mass of potassium chloride will be (3.598 - x) gm.

Molar mass of KNO₃ = 101 g/mol.

Molar mass of KCl = 74.5 g/mol.

In a 100 gm mixture, the mass of KNO₃ is (x / 3.598) × 100%, and the mass of KCl is ((3.598 - x) / 3.598) × 100%.

According to the question, the student dissolved the sample and added silver nitrate to precipitate KCl. The precipitated KCl was then separated from the mixture, dried, and weighed.

The mass of the KCl was 1.15 g.

Therefore, the mass of KNO₃ in the mixture will be 3.598 - 1.15 = 2.448 g.

The fraction of KNO₃ in the mixture is (2.448 / 3.598) = 0.6816 or 68.16%.

The fraction of KCl in the mixture is 1 - 0.6816 = 0.3184 or 31.84%.

Therefore, the percentage of potassium nitrate in the mixture is 68.16%, and the percentage of potassium chloride in the mixture is 31.84%.

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Choose the formula of the compound made of manganese (II) ion and permanganate ion. a) Mn(MnO 4

)2 b). mn(mno4)2 c). Mn2MnO4 d). Mn308 No answer text provided. b) No answer text provided.

Answers

The correct formula for the compound made of manganese (II) ion and permanganate ion is b) Mn(MnO4)2. This compound is formed by combining one manganese (II) ion (Mn2+) with two permanganate ions (MnO4-).

In the compound, the manganese (II) ion carries a 2+ charge, denoted by the Roman numeral II in parentheses after "manganese." The permanganate ion, on the other hand, has a 1- charge, indicated by the subscript 4 and the negative sign in the formula MnO4-. To achieve overall electrical neutrality in the compound, two permanganate ions are required to balance the charge of one manganese (II) ion.

The formula Mn(MnO4)2 represents this combination, with the manganese (II) ion enclosed in parentheses followed by the subscript 2 outside the parentheses indicating the presence of two permanganate ions.

It's important to note that the other options presented (a) Mn(MnO4)2, c) Mn2MnO4, and d) Mn308) do not correctly represent the compound formed by the combination of manganese (II) ion and permanganate ion.

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Draw the possible products of the diazo coupling of benzenediazonium chloride with each of the following: a. methoxybenzene b. 1-chloro-3-methoxybenzene

Answers

(a) The possible product of the diazo coupling of benzenediazonium chloride with methoxybenzene is N₂⁺Cl⁻-substituted methoxybenzene. (b) The possible product of the diazo coupling of benzenediazonium chloride with 1-chloro-3-methoxybenzene is N₂⁺Cl⁻-substituted 1-chloro-3-methoxybenzene.

a. Possible products of the diazo coupling of benzenediazonium chloride with methoxybenzene:

Benzenediazonium chloride:          N₂⁺ Cl⁻

Methoxybenzene:                           OCH₃-C₆H₅

In the diazo coupling reaction, the diazonium salt (benzenediazonium chloride) reacts with an aromatic compound (methoxybenzene) to form a new product. In this case, the possible product that can be formed is:

N₂⁺ Cl⁻ + OCH₃-C₆H₅  →  N₂ + Cl⁻ + OCH₃-C₆H₄-N₂⁺Cl⁻

The product is a diazonium salt derivative of methoxybenzene, where the diazonium group (-N₂⁺) is attached to the benzene ring.

b. Possible products of the diazo coupling of benzenediazonium chloride with 1-chloro-3-methoxybenzene:

Benzenediazonium chloride:       N₂⁺ Cl⁻

1-chloro-3-methoxybenzene:     Cl-C₆H₄-OCH₃

In the diazo coupling reaction, the diazonium salt (benzenediazonium chloride) reacts with an aromatic compound (1-chloro-3-methoxybenzene) to form a new product. In this case, the possible product that can be formed is:

N₂⁺ Cl⁻ + Cl-C₆H₄-OCH₃  →  N₂ + Cl⁻ + Cl-C₆H₄-N₂⁺Cl⁻ + OCH₃

The product is a diazonium salt derivative of 1-chloro-3-methoxybenzene, where the diazonium group (-N₂⁺) is attached to the benzene ring and the methoxy group (-OCH₃) remains intact.

Please note that these reactions represent possible products, and the actual product formed may depend on the reaction conditions and factors such as steric hindrance and electronic effects.

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Which example is an exothermic reaction?

Answers

Answer:

the first one

Explanation:

Answer:

B

Explanation:

Which one of these following complexes [Cr(NH 3

) 6

] 3+
or [Cr(NH 3

) 5

Cl] 2+
exhibit metal to ligand π-bonding ? show the molecular orbital approach and eloborate your answer.

Answers

[Cr(NH₃)₆]³⁺ exhibits a stronger metal to ligand π-bonding due to the absence of a π-acceptor ligand, while [Cr(NH₃)₅Cl]²⁺ has a weaker interaction due to the presence of the π-acceptor chloride ligand.

In [Cr(NH₃)₆]³⁺ : The central chromium ion (Cr³⁺) has six ammonia ligands (NH₃) surrounding it. Each ammonia ligand donates a pair of electrons to the chromium ion, resulting in a d²sp³ hybridization of the chromium ion. The d orbitals of the chromium ion can interact with the π* orbitals of the ammonia ligands through a π-bonding interaction.

In [Cr(NH₃)₅Cl]²⁺ : The central chromium ion (Cr³⁺) has five ammonia ligands (NH₃) and one chloride ligand (Cl) surrounding it. The chloride ligand is a stronger π-acceptor than the ammonia ligands. As a result, the chloride ligand can accept electron density from the chromium ion, resulting in a weaker interaction between the d orbitals of the metal and the π* orbitals of the ligands.

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Give the condensed structural diagram for each structure below: butane 3-ethyl-2-methyloctane 4-isopropylnonane 2-iodo-2,4,4-trimethylpentan 1,2-dibromocyclohexane 1,2-dimethylcycloproparie 3,3-dimethyl-1-butene cis-diiodoethene 3,3,4-trimethyl-1-pentene 3,5-dimethylcyclopentene 3-bromo-1-pentyne chlorobenzene propylbenzene p-dinitrobenzene 2-phenyloctane ​

Answers

The condensed structural formula is used in chemistry to depict the structure of the organic molecules with respect to its composition and bonding.

The condensed structural formula of the given compounds is as follows:

1. Butane: CH₃-CH₂-CH₂-CH₃

2. 3-Ethyl-2-methyloctane: CH₃-CH₂-CH(CH₃)-CH(CH₂CH₂CH₂CH₃)-CH₂-CH₃

3. 4-Isopropylnonane: CH₃-CH(CH₃)-CH₂-CH(CH₃)-CH₂-CH₂-CH₂-CH₂-CH₃

4. 2-Iodo-2,4,4-trimethylpentane: CH₃-C(CH₃)(CH₃)-CH₂-C(I)(CH₃)-CH3

5. 1,2-Dibromocyclohexane: Br-CH₂-CH₂-CH₂-CH₂-CH₂-CH₂-Br

6. 1,2-Dimethylcyclopropane: CH₃-C(CH₃)-CH₂

7. 3,3-Dimethyl-1-butene: H₂C=CH-CH(CH₃)₂-CH3

8. cis-Diiodoethene: I-CH=CH-I

9. 3,3,4-Trimethyl-1-pentene: CH₃-C(CH₃)=C(CH₃)-CH₂-CH₃

10. 3,5-Dimethylcyclopentene: CH₃-C(CH₃)=CH-CH₂-CH₃

11. 3-Bromo-1-pentyne: CH≡CH-CH₂(Br)-CH₂-CH₃

12. Chlorobenzene: Cl-C₆H₅

13. Propylbenzene: CH₃-CH₂-CH₂-C₆H₅

14. p-Dinitrobenzene: NO₂-C₆H₄-NO₂

15. 2-Phenyloctane: CH₃(CH₂)₇-C₆H₅

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Answer each of the following questions about the molecular orbital model of cyclopentadienyl cation. How many pi electrons are there in total? In the ground state. how manv ni-molecular orbitals are there in total? In the ground state, how manv ni-molecular orbitals are occupied? Is this ion aromatic, antiaromatic, or nonaromatic (assuming that the molecule is flat)?

Answers

In the molecular orbital model of the cyclopentadienyl cation, there are 6 pi electrons in total. There are 5 molecular orbitals in the ground state, and all of them are occupied. The cyclopentadienyl cation is aromatic assuming that the molecule is flat.

The cyclopentadienyl cation (C₅H₅⁺) consists of a cyclic arrangement of five carbon atoms, with each carbon atom having a hydrogen atom attached to it. In the molecular orbital model, the pi electrons are considered for analysis.

To determine the number of pi electrons, we count the number of electrons contributed by the carbon atoms in the cyclic ring. Each carbon atom contributes one electron from its 2p orbital to the pi system. Since there are 5 carbon atoms in the ring, the total number of pi electrons is 5.

In the ground state, the cyclopentadienyl cation has a total of 5 molecular orbitals. These orbitals result from the interaction of the p orbitals on each carbon atom in the ring. Each molecular orbital can accommodate two electrons due to the Pauli exclusion principle and Hund's rule.

Since there are 5 pi electrons in total, all 5 molecular orbitals will be occupied, with each orbital containing one electron. This results in a fully occupied pi system in the ground state.

The cyclopentadienyl cation is classified as aromatic. Aromaticity is determined by meeting certain criteria, including having a planar structure, a fully conjugated pi system, and a closed-shell configuration with 4n + 2 pi electrons (where n is an integer).

In this case, the cyclopentadienyl cation fulfills these criteria and possesses 5 pi electrons, which satisfies the 4n + 2 rule (n = 1). Therefore, the cyclopentadienyl cation is aromatic.

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• What will be the equilibrium molarity of the sulfate ion if
the
prepared concentration of sulfuric acid was 0.015 M instead of
0.031
M. (Hint: You will have to use the quadratic formula. Also,
use

Answers

If the prepared concentration of sulfuric acid was changed from 0.031 M to 0.015 M, the equilibrium molarity of the sulfate ion would also be 0.015 M.

What will be the equilibrium molarity of the sulfate ion?

To determine the equilibrium molarity of the sulfate ion (SO₄²⁻) if the concentration of sulfuric acid was changed, we need to consider the balanced chemical equation for the dissociation of sulfuric acid:

H₂SO₄ (aq) ⇌ 2H⁺ (aq) + SO₄²⁻ (aq)

According to the equation, one mole of sulfuric acid produces one mole of sulfate ions.

Therefore, the equilibrium molarity of the sulfate ion will be equal to the initial concentration of sulfuric acid.

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a.) Calculate the wavelength of radiation emitted when an electron in a hydrogen atom moves from the n = 4 to the n = 1 energy level. b.) Is the radiation visible? Wavelength = nm.

Answers

The calculated wavelength of the emitted radiation is 478 nm, which falls within this range, it is visible to the human eye. Therefore, the radiation is visible.

a.) To calculate the wavelength of radiation emitted when an electron in a hydrogen atom moves from the n = 4 to the n = 1 energy level, we need to use the Rydberg formula. The Rydberg formula is given as:   1/λ = R [1/n₁² - 1/n₂²]Where,λ = wavelength of radiation emittedR = Rydberg constant, 1.097 × 10⁷ m⁻¹n₁

= initial energy leveln₂

= final energy levelFor hydrogen atom, the value of R is 1.097 × 10⁷ m⁻¹n₁

= 4, n₂

= 1.

Substituting these values in the Rydberg formula:1/λ = 1.097 × 10⁷ [1/4² - 1/1²]1/λ

= 1.097 × 10⁷ [3/16]λ

= 4.78 × 10⁻⁷ m

= 478 nm Therefore, the wavelength of radiation emitted is 478 nm.b.) To determine if the radiation is visible or not, we need to compare its wavelength to the range of wavelengths that are visible to the human eye, which is roughly from 400 nm (violet) to 700 nm (red).Since the calculated wavelength of the emitted radiation is 478 nm, which falls within this range, it is visible to the human eye. Therefore, the radiation is visible.

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The generall expression for hoos in 2 prior equilibrium scheme with back reachion in the second step is under "approximation": 1+K[L]
h 1

K[L]

+h −1

⟶h 1

K[L]+k −1

What are the "cerrain approximstions"?

Answers

These approximations are made to simplify the expression and make it easier to analyze. However, it is important to note that these approximations may not hold true under all conditions and should be used with caution.

The certain approximations for the given expression are as follows:

1. The equilibrium constant (K) for the second step is much larger compared to the first step, which implies that the forward reaction in the second step is favored.

2. The concentration of the reactant (L) in the second step is relatively small compared to the concentration of the product (h1), indicating that the forward reaction is predominant.

3. The rate constant (k-1) for the reverse reaction in the second step is much smaller compared to the rate constant (h-1) for the reverse reaction in the first step. This suggests that the reverse reaction in the second step is less likely to occur.

4. The concentration of the reactant (L) in the second step does not significantly affect the rate of the forward reaction.

These approximations are made to simplify the expression and make it easier to analyze. However, it is important to note that these approximations may not hold true under all conditions and should be used with caution.

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2. A compound is found by analysis to be by mass \( 79.85 \% \) carbon and \( 20.15 \% \) hydrogen. What is its empirical formula?

Answers

The empirical formula of the compound with 79.85% carbon and 20.15% hydrogen is CH4.

What is the empirical formula?

The empirical formula of the compound gives the simplest whole-number ratio of atoms in a compound. It is determined based on the mass of each element present in a compound. If we're given the percentage of each element present, we can easily determine the empirical formula for a compound.

The steps to determine the empirical formula of a compound:

1. Assume a certain mass (in grams) for the compound.

2. Determine the number of moles of each element in the compound.

3. Find the smallest ratio between the moles of the elements.

4. Write the empirical formula using the smallest mole ratio determined in step 3.

Given the mass percent of carbon and hydrogen in the compound as  79.85% and 20.15%), respectively,

we can assume 100 g of the compound. This would give us 79.85 g of carbon and 20.15 g of hydrogen.

Number of moles of carbon in the compound:

{Moles of carbon = [tex]\frac{79.85 \;g \;C}{12.01 \;g/mol}[/tex]

                            = 6.64\;mol\;C\]

Number of moles of hydrogen in the compound:

Moles of hydrogen = [tex]\frac{20.15 \;g \;H}{1.01 \;g/mol}[/tex]

                               = 19.96\;mol\;H\]

Dividing both by the smaller value, we get:

[tex]\[\frac{6.64\;mol\;C}{6.64\;mol}[/tex]= 1.00[tex]\[\frac{19.96\;mol\;H}{6.64\;mol}[/tex]= 3.00\]

Rounding to the nearest whole number, the mole ratio of carbon to hydrogen in the compound is 1:3.

Therefore, the empirical formula for the compound is CH3, which is the simplest whole-number ratio of atoms.

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12. What is the volume in L of 30.5 g of oxygen gas if its density is 0.00143 g/mL a. 2.13×10 4
b. 21.3 c. 46.9 d. 213

Answers

The volume of 30.5 g of oxygen gas, with a density of 0.00143 g/mL, is 21.3 L.

To calculate the volume of a substance, we can use the formula:

Volume = Mass / Density

Mass of oxygen gas = 30.5 g

Density of oxygen gas = 0.00143 g/mL

To find the volume in liters, we need to convert the given density from grams per milliliter (g/mL) to grams per liter (g/L).

Density (g/L) = Density (g/mL) × 1000

Density (g/L) = 0.00143 g/mL × 1000 = 1.43 g/L

Now we can use the formula to calculate the volume:

Volume = Mass / Density

Volume = 30.5 g / 1.43 g/L

Volume = 21.3 L

Therefore, the volume of 30.5 g of oxygen gas, with a density of 0.00143 g/mL, is 21.3 L.

The correct answer is option b. 21.3.


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Predict which set(s) of molecules will be miscible:
A) C6H12 and CH3OH
B) CH3CH2OCH2CH3 and
CCl4
C) CH3COCH3 and CH3CN
D) CH3CO2H and
C5H12

Answers

The sets of molecules that are predicted to be miscible are:

B) CH₃CH₂OCH₂CH₃ (diethyl ether) and CCl₄ (carbon tetrachloride)

C) CH₃COCH₃ (acetone) and CH₃CN (acetonitrile)

A) C₆H₁₂ (cyclohexane) and CH₃OH (methanol):

Cyclohexane is a nonpolar molecule, while methanol is a polar molecule. Generally, polar solvents tend to dissolve polar solutes better than nonpolar solvents. Therefore, these two molecules are unlikely to be miscible.

B) CH₃CH₂OCH₂CH₃  (diethyl ether) and CCl₄ (carbon tetrachloride):

Both diethyl ether and carbon tetrachloride are nonpolar molecules. Nonpolar solvents tend to be miscible with other nonpolar solvents. Therefore, these two molecules are likely to be miscible.

C) CH₃COCH₃ (acetone) and CH₃CN (acetonitrile):

Both acetone and acetonitrile are polar molecules. Since they both have a similar polarity, they are likely to be miscible with each other.

D) CH₃CO₂H (acetic acid) and C₅H₁₂ (pentane):

Acetic acid is a polar molecule due to the presence of the carboxylic acid group, while pentane is a nonpolar molecule. Polar solvents tend to have stronger intermolecular interactions compared to nonpolar solvents. Hence, acetic acid is likely to be miscible with other polar solvents but not with nonpolar solvents like pentane.

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How does the body metabolize amino acids which are not needed for the synthesis of proteins and other biological molecules? A. Storage as amino fatty acids B. There is no excess of nitrogen C. Excretion in form of (H2​ N)2​C=O D. Excretion in form of NH3​ E. Catabolism as acetyl-CoA

Answers

The body metabolizes amino acids which are not needed for the synthesis of proteins and other biological molecules through "excretion in form of NH3​". The correct option is D).

Excess amino acids that are not required for protein synthesis or other biological molecules are typically catabolized in a process called deamination. During deamination, the amino group (-NH2) is removed from the amino acid, resulting in the formation of ammonia (NH3) and a keto acid.

The ammonia is then converted into a less toxic compound called urea in the liver through a series of reactions known as the urea cycle. Urea is eventually excreted in the urine, allowing for the elimination of excess nitrogen from the body.

Therefore, the correct option is D).

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Cakulate the entropy change of the following reaction as written at 25 ∘
C from standard entropy data. Use the attached table of thermodynamic properties to find the relevant data. 2C 2

H 6

( g)+7O 2

( g)→2CO 2

( s)+6H 2

O(g);ΔS=…/K ΔS= J/K 4: Calculate the Gibbs energy of the following reaction as written at 25 ∘
C from Gibbs energy of formation data. Use the attached table of thermodynamic properties to find the relevant data. Is the reaction spontaneous or nonspontaneous at 25 ∘
C ? 2C 2

H 4

( g)+7O 2

( s)→2CO 2

( s)+6H 2

O(s):ΔG= - ΔG= k 3 (spontaneous, nonspontaneous) at 25 ∘
C - The reaction is

Answers

1. The entropy change (ΔS) of the reaction 2C2H6(g) + 7O2(g) → 2CO2(s) + 6H2O(g) at 25°C can be calculated using standard entropy data from the table of thermodynamic properties.

2. The Gibbs energy change (ΔG) of the reaction 2C2H4(g) + 7O2(s) → 2CO2(s) + 6H2O(s) at 25°C can be calculated using Gibbs energy of formation data from the table of thermodynamic properties. Based on the calculated ΔG value, the spontaneity of the reaction can be determined.

1. To calculate the entropy change (ΔS) of the reaction, you need to subtract the sum of the standard entropies of the reactants from the sum of the standard entropies of the products. The values for ΔS can be obtained from the attached table of thermodynamic properties.

2. To calculate the Gibbs energy change (ΔG) of the reaction, you need to subtract the sum of the Gibbs energy of formation of the reactants from the sum of the Gibbs energy of formation of the products. The values for ΔG can be obtained from the attached table of thermodynamic properties. If the calculated ΔG value is negative, the reaction is spontaneous at 25°C; if it is positive, the reaction is nonspontaneous.

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When you use a proper Brønsted acid to treat the compound above, which of the following statements is applicable to describe the major species? A. Species A is the major species obtained. B. Species A and B are obtained A. Species A is the major species obtained. B. Species A and B are obtained equally. C. Species B is the major species obtained due to the presence of oxygen atom which stabilizes the adjacent charge. D. Species A is the major species obtained due to the presence of oxygen atom which stabilizes the charge.

Answers

Treating cis-Δ9-hexadecenoic acid with a Brønsted acid results in the formation of the carboxylate ion (species A) as the major species obtained, while species B is not formed.

To determine the major species obtained when treating cis-Δ9-hexadecenoic acid (palmitoleic acid) with a proper Brønsted acid, we need to consider the reaction and the properties of the compound.

When a Brønsted acid is used to treat a carboxylic acid like palmitoleic acid, it typically reacts by donating a proton (H+) to the carboxyl group, resulting in the formation of the corresponding carboxylate ion. In this case, the carboxyl group is the acidic functional group in palmitoleic acid.

The reaction can be represented as follows:

H3C - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH=CH - CH2 - CH2 - CH2 - CH2 - CH3

                    ||

                    COOH

+ Brønsted Acid → H3C - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH=CH - CH2 - CH2 - CH2 - CH2 - CH3

                                                    ||

                                                    COO-

In this reaction, the carboxyl group (-COOH) is converted into its conjugate base form (-COO-), which is referred to as the carboxylate ion. The major species obtained after the reaction is the carboxylate ion (species A, COO-).

Therefore, the correct statement is:

A. Species A is the major species obtained.

Option B is incorrect because it suggests that species B is obtained equally, which is not the case. Option C is incorrect because it implies that species B is the major species, which is not supported by the reaction. Option D is incorrect because it refers to the oxygen atom stabilizing the charge, which is not the determining factor in this specific reaction.

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Aceable Inc. and Exela Inc. both seek funding at the lowest possible cost. Aceable would prefer the flexibility of floating rate borrowing while Exela wants the security of fixed rate borrowing. Aceable is the more credit-worthy company and, with the better credit rating, has lower financing costs in both debt markets. They each face the following rate structure:Floating interest Fixed interestAceable LIBOR + 0.5% 2%Exela LIBOR + 1.5% 4%Aceable wants floating rate debt - it could borrow from the floating market directly or borrow at the fixed rate and swap for floating rate debt. On the other hand, Exela wantsfixed rate debt - it could borrow at the fixed rate directly or borrow floating and swap for fixed rate debt.Required:a) Describe and calculate the funding cost advantage enjoyed by Aceable, which represents the opportunity set for improvement in funding costs to be distributed between both parties. 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