The products remain in aqueous solution, so all phases in the reaction are aqueous.
What is aqueous solution?An aqueous solution is a solution in which the solvent is water. In it, the solutes are dissolved in the water and form a homogenous mixture. Many substances can dissolve in water, including salts, acids, bases, and other organic compounds. Aqueous solutions are used for many purposes in the natural world, including for metabolic processes, and for cleaning and sterilizing.
MnO4−(aq) + CH3OH(aq) → Mn2+(aq) + HCO2H(aq)
Phases:
MnO4−(aq): Aqueous
CH3OH(aq): Aqueous
Mn2+(aq): Aqueous
HCO2H(aq): Aqueous
The reaction is an acid-base neutralization reaction where the acidic oxyanion MnO4− reacts with the base CH3OH to form the acidic product HCO2H and the cation Mn2+. The products remain in aqueous solution, so all phases in the reaction are aqueous.
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the equilibrum constant Kp for teh reaction SO2 NO2 --> SO3 NO is 3 find the pressure of NO2 that must be added to 2.4 atm of SO2 in order to form 1.2 atm of SO3 at equilibrium
The equilibrium constant Kp for the reaction :
SO₂ + NO₂ ⇄ SO₃ + NO is 3. The pressure of the NO₂ is 0.18 atm.
The reaction is
SO₂ + NO₂ ⇄ SO₃ + NO
Kp = [ SO₃ ] [NO] / [SO₂ ] [ NO₂ ]
The equilibrium constant ,Kp = 3
P [ SO₂] = 2.4 atm
P [ SO₃ ] = 1.2 atm
P [NO] = 1.1 atm
Kp = [ SO₃ ] [NO] / [SO₂ ] [ NO₂ ]
3 = 1.2 × 1.1 / 2.4 [ NO₂ ]
3 = 1.32 / 2.4 [ NO₂ ]
[ NO₂ ] = 1.32 / 7.2
[ NO₂ ] = 0.18 atm
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when a thin uniform stick of mass M and length L is pivoted aboutits midpoint, its rotational inertia is ML2/12. When pivoted about a parallel axis through one end, it's rotationalinertia is??
a- ML^2/12
b- ML^2/6
c- ML^2/3
d- 7ML^2/12
e- 13ML^2/12
When a thin uniform stick of mass M and length L is pivoted aboutits midpoint, its rotational inertia is ML²/12. When pivoted about a parallel axis through one end, its rotational inertia is (C) ML²/3.
Using the parallel axes theorem
I = I cm + Mh²
where M is the total mass, Icm is the moment of inertia about a parallel axis through the center of a mass, and h is the distance between the two axes being compared.
I = 1/12 ML² + M (1/2)²
The distance from one endpoint to the halfway point is equal to the length multiplied by two.
Simplify
I = 1/2 ML² + ML² = 1/3 ML²
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A solution containing which one of the following pairs of substances will be a buffer solution? A solution containing which one of the following pairs of substances will be a buffer solution? AgBr, HBr CuCl, HCl CsI, HI KI, HI none of the above
Which of the halves that of compounds will make up the buffer solution in a solution Any of the halves that of substances, when present in a solution, will make it a buffer solution None of the above.
What exactly is a buffer solution?As a result, it's essential to have liquids whose pH doesn't really alter even when strong alkalies nor strong acids are added. These are referred to as buffer solutions. The ability of a buffer to withstand a change in pH is known as buffer capacity.
What makes it a buffer solution?it can neutralize a small amount of additional acid or base, the pH of the liquid is kept comparatively steady.
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Which element would mostly likely have an electron affinity measuring closest to zero
Noble gases in Group VIII have electron affinities that are close to zero because each atom has a stable octet and does not readily accept an electron.
Both electron affinity and electron negativity have a downward trend over time. The electron affinity is also 0 if the electron negativity is 0. Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and Oganesson are the elements with no affinity for electrons (Og). Affinities for electrons can be zero, negative, or positive. Noble gases in Group VIII have electron affinities that are close to zero because each atom has a stable octet and does not readily accept an electron. There is no tendency for noble or inert gases to gain an electron. Its electron affinity is therefore zero.
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the oxygen-to-hydrogen mass ratio of water is always 8.0 is an example of what fundamental law?
A) Law of Constant Composition
B) Law of Constant Mass Ratio
C) Law of Conservation of Mass
D) Law of Constant Whole Number Ratio
E) none of the above
The 8.0 oxygen-to-hydrogen mass ratio of water serves as an example of the law of conservation of mass.
In water, the mass ratio of hydrogen to oxygen is 1:8. Atomic weights for H and O are 1 g/mol and 16 g/mol, respectively. Mass is neither created nor destroyed during a chemical reaction, according to the conservation of mass principle. The carbon atom in coal, for instance, changes into carbon dioxide as it burns. The carbon atom's mass remains constant even as it transforms from a solid to a gas. That is to say, the mass of any one element at the start of a reaction will be equal to that element's mass at the conclusion of the reaction.
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Classify each of the following as a redox reaction or a non-redox reaction.
Zn + CuCl2 --> ZnCl2 + Cu
SO3 + H2O --> H2SO4
HCl + NaOH --> H2O + NaCl
2CO + O2 --> 2CO2
1.Redox; Cu reduced, Zn oxidised No change in oxidation states; non-redox 3. Non-redox; oxidation states remain unchanged 4.Redox; O reduced, C oxidised.
Describe redox in plain English.A chemical reaction that occurs when an oxidising substance and a reducing substance come into contact. In the reaction, the reducing substance obtains electrons while the oxidising substance loses electrons.
What is the purpose of redox?Any chemical process in which a molecule, atom, or ion suffers a change in its oxidation number as a result of acquiring or losing an electron is known as an oxidation-reduction reaction. Many fundamental processes of life, such as photosynthesis, respiration, combustion, and corrosion or rusting, depend on redox reactions.
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You received the instructions for this assignment in Lesson: Pericles' Funeral Oration. Here are those instructions again, as a reminder: Review the definition and examples of rhetorical devices from the Nonfiction: Introduction lesson. Create TWO Venn diagrams: one will be made up of circles labeled ethos, logos, and pathos and one will cover 2-3 other devices of your choice. Keep track of the rhetorical devices that you find in today's nonfiction selection by Pericles, as well as next week's selections from Hannah Moore, Empress Theodora, Mary Wollstonecraft, Augustine, and C.S. Lewis (6 texts in total). For each work of nonfiction, choose at least three examples of rhetorical devices. That means you will need 3 examples x 6 nonfiction texts
Make TWO Venn diagrams: one with circles labeled with the words ethos, logos, and pathos, and the other with 2-3 additional devices of your choice. Pericles extols Athens in order to keep the struggle going.
What is a good example of pathos?Even when emotion clashes with our sense of logic, it can still be incredibly compelling. In persuasive rhetoric or other types of writing, an appeal to emotion is referred to as using pathos.
Ethos vs. pathos: what are they?The writer's personality is drawn to ethos. Ethos can equally be seen as the author's posture inside the argument and indeed the strength of the reporter's evidence. In addition to beliefs, pathos appeals to the sympathetic imagination and emotions.
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if we react 30 grams of ethane (c2h6 ) with 320 grams of oxygen, how many grams of carbon dioxide would we make? 2 c2h6 (g) 7 o2 (g) 4 co2 (g) 6 h2o (g)
How much carbon dioxide would result from the reaction of 30 grams or ethane (c2h6) and 320 grams of oxygen Size of 2 moles 80 grams of CO2 are equal to one mole and one molar mass.
Exactly what does ethane look like?Natural gas called ethane is incredibly common in the world. In fossil fuels, a greenhouse gas is present. Natural gas contains a 5–10% percentage of it in its makeup. A key gaseous fuel with in petrochemical industry and a significant component of natural gas is ethane.
What state is ethane in?Ethane is just a colorless and odorless gas with no odor at standard pressure and temperature. The temperature at which it boils is 88.5 °C (127.3 °F), while the temperature at which it melts is 182.8 °C (297.0 °F). There are various variations of solid ethane.
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although terry knew all of the elements of the periodic table last year in chemistry class he cannot answer a particular question on the act science section because he simply cannot think of the atomic number for iron. which of the three memory processes is failing terry?
A: Retrieval. Terry has the knowledge stored in his long-term memory, but he cannot retrieve it in time to answer the question on the ACT science section.
What is Retrieval?Retrieval is the process of retrieving information from a storage system. It is the process of locating data or information stored in a computer system, such as a database, and accessing it for use. Retrieval can involve searching for particular items or data, or it can refer to the process of retrieving a certain type of data from a larger collection. Retrieval is a fundamental component of information management and is used in a wide variety of contexts, from businesses to libraries and universities.
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A group of students is investigating whether aluminum is a better thermal conductor than steel. The students take an aluminum wire and a steel wire of the same length and diameter. They put equal lengths of wax on one end of each wire and dip the other end into a beaker of hot water. The length of wax left on the wires after 10 minutes is shown. Experimental Observations Aluminum Steel Original length of wax 2.5 cm 2.5 cm Length of wax after 10 minutes 1.2 cm 1.8 cm Which step should the students take next
The step that the students should take next is : B. Analyze the data.
What is analysis of data?Data Analysis is the process of applying statistical and/or logical techniques to describe and illustrate, condense and recap and then evaluate data.
Here in the given question, students have conducted an experiment to check their hypothesis on thermal conductivity of two metals; Aluminum and steel. The experimental observations have been noted. Next step based on the scientific procedure is to analyze the data.
Analysis of data suggests that; as the length of wax after 10 min is lower in Al than that of steel, hence aluminum is better thermal conductor.
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Which of the molecules below will be polar?
CS2, BF3, SO2, CH3Br
CH3Br only
CS2 only
Both BF3 and CH3Br
Both SO2 and CH3Br
Both SO2 and CH3Br are polar molecules from of the given molecules in the question.
A polar molecule is what?Negative and positive charge areas are found in polar compounds. An illustration of a polar substance is water. Due to its structure and the sort of bonds it contains, the molecule has a small amount of positive on one end and a small negative charge on the other.
Polar and nonpolar molecules: what are they?When something differs on either end, we say it is polar. These molecules are referred to as polar molecules since they have both positive and negative ends. In that case, we call them non-polar. Polar objects are capable of both attraction and repulsion.
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according to the data in model 3, how does the length of the bond between the hydrogen atom and the center atom of a binary acid affect the strength of the acid?
According to the data in model 3, the length of the bond between the hydrogen atom and the center atom of a binary acid has an inverse relationship with the strength of the acid.
That is, as the bond length increases, the acid strength decreases.
In a binary acid, the strength of the acid is determined by the strength of the bond between the hydrogen atom and the center atom. A stronger bond results in a stronger acid, and a weaker bond results in a weaker acid.
The strength of a chemical bond is determined by the distance between the two atoms in the bond. The shorter the distance, the stronger the bond.
Therefore, as the distance between the hydrogen atom and the central atom in a binary acid increases, the bond becomes weaker and the acid becomes weaker.
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which substance is the limiting reactant when 16.0 g of sulfur reacts with 10.0 g of oxygen and 12.0 g of sodium hydroxide according to the following chemical equation?
b) NaOH(aq) is the limiting reactant when 16.0 g of sulfur reacts with 10.0 g of oxygen and 12.0 g of sodium hydroxide.
How to find the limiting reactant of a given chemical reaction?Initial amount in the reaction:
sulfur S: 16 x 1/32 => 0.5 mol
oxygen O : 10 x 1/16 => 0.625 mol
NaOH : 12 x 1/40 => 0.3 mol
Amount used in the reaction:
0.5 mol of S
oxygen : 0.5 x 3 mol O/2 mol S => 0.75 mol
NaOH : 0.5 x 4 mol NaOH/ 2 mol S => 1 mol
Amount left in the reaction:
Sulfur : 0
Oxygen : 0.125 mol
NaOH : -0.7 mol
Since we cannot have a substance in a negative quantity, sodium hydroxide is the limiting reactant in this scenario (NaOH).
What does "limiting reactant" refer to?The reactant that is consumed first in a chemical reaction, also known as the limiting reactant (or limiting reagent), limits the amount of product that can be produced.
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which substance is the limiting reactant when 16.0 g of sulfur reacts with 10.0 g of oxygen and 12.0 g of sodium hydroxide according to the following chemical equation?
2 S(s) + 3 O2(g) + 4 NaOH(aq) → 2 Na2SO4(aq) + 2 H2O(l)
a)S(s)
b) NaOH(aq)
c) Na2SO4(aq)
d)O2(g)
- Mary went to Daytona Beach and found there was a bathroom scale in her hotel room. The first
morning her weight was 127 lbs. Mary concluded that the grapefruit diet does not work and went to the nearest McDonald's for a supersized Big Mac meal. What was wrong with Mary’s conclusion?
mary went to the bathroom and found the scale to weight out there so she weighed herself at the bathroom and found her weight was 127lbs
what was scale used for ?
What is the purpose of scales. Scales are weight-measurement devices. Balance scales are widely used to compare object weights or to weigh objects by balancing them against standard weights.
Gravity affects the outcomes of scales. Balances, perplexingly, employ a process known as a force restoration mechanism to generate a force that balances the unknown mass.
A scale factor is defined as the ratio of the scale of a given original item to the scale of a new object that is its representation but of a different size (bigger or smaller).
All of this is made feasible by the mathematical idea of scale factor. The scale factor is a quantity used to grow or decrease the size of forms in two-dimensional and three-dimensional geometry. It may be used to make figures that are similar yet have different proportions.
mary went to the bathroom and found the scale to weight out there so she weighed herself at the bathroom and found her weight was 127lbs
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a sample of a hydrocarbon contains 2.59x1023 atoms of hydrogen and is 17.3% hydrogen by mass. if the molar mass of the hydrocarbon is between 55 and 65 g/mol. what is the molecular formula of the compound?
The molecular formula of a compound containing 2.59 × 10²³ atms of hydrogen and 17.3% hydrogen by mass is C₄H₁₀.
Let us assume that we have 100g of the original sample.
The number of moles of C and H can be calculated as:
Number of moles of H
= 17.3g × 1 mol H/ 1.008g
=17.2 mol
Number of moles of C
=(100-17.3)g × 1 mol C / 12.01 g C
=6.89 mol C
The smallest atomic ratio for H is
=17.2/6.89
=2.50
The smallest atomic ratio for carbon is
=6.89/6.89
=1
To round off the smallest atomic ratio, we need to multiply both of them by 2
Thus, smallest atomic ratio for carbon= 1×2=2
smallest atomic ratio for hydrogen= 2.5×2 =5
Thus, the empirical formula is C₂H₅
let, (C₂H₅)n be the molecular formula
molecular mass of the compound C₂H₅= 58 g
⇒ (C₂H₅)n =58
⇒(2×12+15)n =58
⇒n= 58/29
⇒n=2
Thus molecular formula of the compound (C₂H₅)₂ is
=C₄H₁₀
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Which of the following elements can be prepared by electrolysis of their aqueous salts: fluorine, manganese, iron, cadmium?
Fluorine, Manganese, and Iron can be prepared by electrolysis of their aqueous salts, cadmium cannot.
The elements that can be prepared by electrolysis of their aqueous salts are:
Fluorine can be prepared by electrolysis of its aqueous salt, hydrogen fluoride (HF).Manganese can be prepared by electrolysis of its aqueous salt, manganese sulfate (MnSO4)Iron can be prepared by electrolysis of its aqueous salt, Iron (III) chloride (FeCl3)Cadmium cannot be prepared by electrolysis of its aqueous salt, cadmium chloride (CdCl2).It is important to note that the process of electrolysis requires a specific set of conditions such as suitable anodes and cathodes, appropriate temperature, and pressure, to efficiently produce these elements.
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Write the formula of
(a) manganese(III) sulfide.
(b) iron(II) cyanide.
(c) potassium sulfide.
(d) mercury(II) chloride.
The formulas are as follows-
(a) MnS (b) Fe(CN)2 (c)K2S (d)HgCl2 (Here, the no's are representing in subscript)
Which definition of "formula" is the best?A formula is typically a predetermined pattern used to produce repeatable outcomes. It may consist of a combination of words, figures, or concepts that explain the steps to be taken in order to achieve the intended result. Everywhere we go, formulas—the patterns we adhere to in life—are employed.
What is the definition of a formula in science?In science, a formula, such as a mathematical formula or a chemical formula, is a brief way to convey information symbolically. The basic concept of a relationship between specified quantities is referred to as a formula in informal science usage.
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Propose a plausible two-step mechanism for the reaction given below with the steps provided. A+2B → C + E (slow) D + B → E (fast) 2B → C + E (slow) A + E → D (fast) A+B→C+D(slow) A+B→C+E(slow) A+B→C+E(fast) A+B→C+D(fast) D→C+E(fast) Overall Reaction: A+2B → C + E Experimentally Determined Rate Law rate = MA][B] Two-Step Mechanism: Step 1: _______
Step 2: _______
Rate determining step must have A and B in reactant.
Step 1: A + B —> C + D (slow)
Step 2: D + B —> E (fast)
What exactly is a reactant?Reactants are the chemicals that take part in a chemical reaction. The process through which atoms, the fundamental constituents of matter, rearrange themselves to create novel combinations is known as a chemical reaction. Raw materials are reactants because they interact with one another.
What makes water a reactant?In a particular process known as hydrolysis, water serves as a reactant. Water serves as the reaction's molecule capable of dissolving the bonds holding the larger molecules together. By causing the links between the molecules to dissolve during hydrolysis, simpler molecules are created.
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A vitamin tablet has a mass of 330 milligrams. What is the mass of the tablet in grams?
In cumulene, what are the c-c-c and h-c-h bond angles, respectively?
In cumulene, the C=C=C bond angle is 180°, and the H-C-H bond angle is 120°.
Bond angle is known as the angle present between the two bonds i.e. angle between the two orbitals containing bonding electron pairs around the central atom in a complex molecule as well as ion.
C=C=C bond angles are the internal carbon atoms are each directly bonded to two other carbon atoms, so they are each AX₂ systems. According to VSEPR theory, the bond angle in an AX₂ system is 180 °.
H-C-H bond angles: Each carbon atom will be directly bonded to the other three carbon atoms (C, H, and H), so they are each AX₃ systems. According to VSEPR theory, the bond angle in an AX₃ system is 120 °
-- The given question is incorrect, the correct question is
" In cumulene, what are the C=C=C and H-C-H bond angles, respectively"--
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in which of the following aqueous solutions would you expect agcl to have the lowest solubility? Choose one answer. a. 0.020 M KCl b. pure water c. 0.015 M NaCl d. 0.020 M BaCl2 e. 0.020 M AgNO3
AgCl would have the lowest solubility in 0.020 M BaCl2. The maximum amount of a chemical that will dissolve in a given amount of solvent at a given temperature is referred to as its solubility.
There is a wide range in the solubilities of different substances, and this characteristic of a specific solute-solvent pair is obvious. The equilibrium constant for a solid material dissolving in an aqueous solution is the solubility product constant. Ksp. It refers to how much a solute dissolves in a solution. The Ksp value of a substance rises as its solubility does. The least soluble substance is BaCl2, which also has the lowest Ksp of 0.020 M.
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a catalyst will decrease the activation energy by roughly 12 kj/mol at room temperature (25 c). it will likely increase the reaction rate by
The exact effect of a catalyst on a reaction rate depends on the specific reaction.
What is reaction rate?Reaction rate is a measure of how quickly a chemical reaction proceeds. It is usually expressed as the amount of a substance that is converted or produced over a given period of time. Reaction rate is an important factor in many areas of chemistry including chemical engineering, biochemistry, and pharmacology. It is also a key parameter in the study of catalysts and enzyme kinetics. Reaction rates are affected by a variety of factors, such as reactant concentration, temperature, and the presence of a catalyst.
Generally speaking, catalysts can increase the reaction rate by several orders of magnitude (e.g., from seconds to nanoseconds). In some cases, it may even be possible for a catalyst to increase the reaction rate by a factor of over a million.
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combustion can occur within a range of concentration of fuel vapor and air; this range is referred to as the:
There is a range of fuel vapor and air concentrations where combustion can occur; this range is known as the below explained.
The range of concentration of fuel vapor and air within which combustion can occur is referred to as the "flammable range" or "explosive range." This range is different for different fuels, but typically it is between the lower explosive limit (LEL) and the upper explosive limit (UEL). The LEL is the minimum concentration of fuel vapor in air at which combustion can occur, while the UEL is the maximum concentration above which combustion cannot occur. It is important to note that Combustion also depends on other factors such as temperature, pressure and the presence of ignition sources.
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A saturated AgCl solution was analyzed and found to contain 1.25 x 10-5 M Ag ions. Use this value to calculate the K, of AgCl
The Ksp of AgCl can be calculated using the formula Ksp = [Ag+]2[Cl-]. Since the AgCl solution is saturated, the concentration of both Ag+ and Cl- ions are equal to the initial concentration of Ag+, which is 1.25×[tex]10^{-5}[/tex]M. Thus, the Ksp of AgCl is equal to 1.5625×[tex]10^{-10}[/tex]:
Ksp = [Ag+]2[Cl-]
= (1.25×[tex]10^{-5}[/tex])2
= 1.5625×[tex]10^{-10}[/tex]
This value of Ksp indicates that the solubility of AgCl in the solution is very low, which means that the solution is saturated with AgCl and no more AgCl can be dissolved in the solution. This also implies that the solution is at equilibrium, with the concentration of all the species in the solution being constant.
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from the data below element first ionization energy 1 1310 kj/mol 2 1011 kj/mol 3 418 kj/mol 4 2080 kj/mol 5 947 kj/mol which element is likely to be a metal? select all that apply
Ionizing radiation, The energy needed to separate an electrons from its neutral gaseous ion or atom is what is meant by this term. Element 3 is probably a metal, hence choice C is the correct one.
What is an electron example?
The smallest elemental component of an atom, the electron has a negative charge. In a neutral atom, there are an equal amount of protons and electrons. One electron one and proton are all that the hydrogen atom has. On the contrary hand, the uranium atom possesses 92 protons, which means 92 electrons.
What do you call an electron?
The collection of subatomic particles known as leptons, which are thought to be basic or elementary particles, includes electrons in its description of particle physics.
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In a certain gaseous reaction , 2 mol NO react with 1 mol O 2 :; 2 NO(g)+O 2 (g) longrightarrow2 NO 2 (g) a Given the same conditions of temperature and pressure , what volume of O_{2}(g) would react with 4 L NO gas ? b. How might chemists use their knowledge of molar volumes to monitor the progress of this reaction ?
The chemical reaction of metallic compound vapors is utilized in the gaseous reaction method.
This H2 O2 --> H2O reaction is what kind of reaction?When two or more reactants come together to create one product, the reaction is called a "synthesis reaction."Here, the 4 hydrogen atoms from the two molecules of hydrogen gas (H2) and the two oxygen atoms from the single molecule of oxygen gas unite (O2 ).The only product produced in this process is water, sometimes known as H2O H 2 O.Combination reactions are those that take place when two or more reactants combine to create a single product.Synthesis reactions, or combination reactions, are another name for them.In the equation below, for instance, hydrogen and oxygen can combine to make water.2H2 + O2 → 2H2OFor the sake of this activity, you can ignore the numbers in the equations.To learn more about reaction refer
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which component of the glycolytic pathway undergoes an oxidative decarboxylation, with the resulting product being fed into the citric acid cycle?
Pyruvate is the he component of the glycolytic pathway that undergoes an oxidative decarboxylation and feeds into the citric acid cycle.
what is the product obtained in decarboxylation process of pyruvate?Pyruvate decarboxylation is the process that converts pyruvate, the end product of glycolysis, into acetyl-CoA, which is then fed into the citric acid cycle for further oxidation and energy production. This process involves the loss of a carbon dioxide molecule and an oxidation reaction. During pyruvate decarboxylation, pyruvate loses a molecule of carbon dioxide (CO2) and is oxidized to form acetyl-CoA. The carbon dioxide is released as a waste product, while the remaining two-carbon molecule (acetyl) is fed into the citric acid cycle. In the citric acid cycle, the acetyl group is further oxidized and broken down, releasing more energy in the form of ATP. The citric acid cycle also produces carbon dioxide and water as waste products.
What is pyruvate in glycolysis process?Pyruvate is the end product of glycolysis, a metabolic pathway that breaks down glucose to produce energy. In the next step, pyruvate is transported into the mitochondria where it undergoes a process called pyruvate decarboxylation. In this process, pyruvate is converted into acetyl-CoA by a series of enzyme-catalyzed reactions.
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a solution of ammonia has a ph of 11.8. what is the concentration of oh– ions in the solution?
useful formulas include [H3O^+] = 10^-pH, [OH^-] = 10^-pOH, pH + pOH =14, and [H3O^+][OH^-] = 10^-14
o 1.58 x 10^-12M
o 6.31 x 10^-3M
o 2.20 M
o 158 M
The concentration of OH⁻ ions in the solution is 6.309 x 10^-3 m.
Concentration is termed as the abundance of a constituent divided by the total volume of a mixture.
Ammonia is a colorless irritating gas with sharp suffocating odor. It will dissolve easily in water to form ammonium hydroxide solution which causes irritation and burns. Ammonia gas is easily compressed and it forms a clear as well as colorless liquid under pressure.
pH and pOH are related by an equation:
pH + pOH = 14
11.8 + pOH = 14
pOH = 14 - 11.8
pOH = 2.2
Concentration of OH- ions is given by -
pOH = -log[OH-]
[OH-] = antilog(-2.2)
[OH-] = 6.309×10^-3 m
Hence, concentration of [OH-] is 6.309×10^-3 .
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how many molecules are in 4.62 moles of nitric acid
The number of molecules in 4.62 moles nitric acid has been 27.82 × 10²³.
It's likely that the common person has had no notion how many molecules make up 4.62 milligrams of hydrogen peroxide, but that's good! By the end of this article, you will be able to confidently respond to that question since you will having studied everything you needed concerning moles and molecules.
The moles have been described as the mass of the compound with respect to the molar mass. According to the Avogadro law, the number of molecules present in a mole of sample has been equivalent to the Avogadro number.
Therefore,
The Avogadro number has been a constant quantity with the value of .
6.023 × 10²³
The Avogadro law has been given as:
1 mole = 6.023 × 10²³ moles
Calculating for 4.62 moles nitric acid as:
4.60 moles = 6.023 × 10²³ × 4.62 molecules
⇒ 4.60 moles = 27.82 × 10²³ molecules.
The number of molecules in 4.62 moles nitric acid has been 27.82 × 10²³
Consequently, there are 27.828 x 10′′23 nitric acid molecules in 4.62 moles of nitric acid. This article is not simply concerning Avogadro's number. It turns out that these mass of the particles impacts how many particles are present in a mole of a substance So.
Complete Question:
How many molecules are in 4.62 moles of nitric acid (HNO3)?
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If the products formed from the burning candle are mostly carbon (c), carbon dioxide (co2), and water (h2o), what elements are the reactants, how do you know?
The reactants in candle burning would be carbon, hydrogen, and oxygen.
Fuel (the candlewick and wax) and oxygen are the reactants in the burning of a candle (in the air). Carbon dioxide gas and water vapour are the end results. The substances were hydrogen, oxygen, and carbon. Since nothing is formed or destroyed during a chemical reaction, we can conclude that the element present in the products was also present in the reactants. The law of conservation of energy in physics and chemistry asserts that an isolated system's total energy remains constant. It is the underlying principle of the first law of thermodynamics, which is most frequently stated as "energy cannot be generated or destroyed."
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