The burning of 18.0 g of carbon produces 55.0 g of carbon dioxide. What is the theoretical yield of CO2? Then, calculate the percent yield of CO2. C + O2 → CO2

Al atoms: 6, S atoms: 9, O atoms: 36, The total number of atoms is 51.

what is 3Al2(SO4)3 ?

3Al2(SO4)3 is a chemical formula that represents the compound aluminum sulfate. It is also sometimes written as Al2(SO4)3.

Aluminum sulfate is a white crystalline solid that is commonly used in water treatment, as a coagulating agent to remove impurities and suspended solids from water. It is also used in the paper industry, in the production of dyes and pigments, and as a food additive. Aluminum sulfate has a variety of other applications as well, such as in the production of aluminum and in the tanning of leather.

The formula 3Al2(SO4)3 indicates that the compound contains three molecules of aluminum sulfate, with a total of six aluminum atoms and nine sulfate ions. Each aluminum sulfate molecule consists of two aluminum atoms and three sulfate ions.

Al atoms: 6, S atoms: 9, O atoms: 36, The total number of atoms is 51.

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The cell would burst as water moved into the cell along a concentration gradient from high to low.

If a salt-filled cell is placed in fresh water, osmosis will occur. Osmosis is the diffusion of water molecules from an area of high concentration to an area of low concentration through a semi-permeable membrane. In this case, the semi-permeable membrane is the cell membrane that surrounds the salt-filled cell.

Since the concentration of salt inside the cell is higher than the concentration of salt in the fresh water, water molecules will move from the fresh water into the cell in an attempt to balance the concentration of salt on both sides of the membrane. This results in an increase in the volume of the cell, which can cause the cell to swell or even burst.

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The chemical equation given above is an example of double replacement reaction (option D).

Chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

A chemical reaction can be of various types as follows:

A double replacement reaction involves the substitution of two substances in the reaction. In the above equation, silver and sodium is replaced.

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The sugars we have been discussing are made directly through a series of reactions in the Calvin Cycle, which uses CO2 as a starting input.

Recall that under thermodynamic laws, building complex molecules requires the input of energy in the form of sunlight. That energy in photosynthesis comes from the Light Reaction. Through a series of reactions in the Light Reaction, light energy is transformed into energy that is in the form of ATP and high-energy electrons carried by NADPH. In the Light Reaction, H2O is used and outputs as O2. In the Calvin Cycle, ATP and NADPH enter and output as ADP and NADP. These processes work together to produce glucose and other sugars that are essential for life. The sugars we have been discussing are made directly through a series of reactions in the Calvin Cycle, which uses CO2 as a starting input.

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The difference in temperature causes the transfer of heat from one point to another. Energy is transferred when one molecule collides with another. The correct option is B.

The process of transmission of energy from the particles of one medium to another as a result of the collision between the particles is defined as the conduction. An area with higher kinetic energy transfers thermal energy towards the area of lower kinetic energy.

When a substance is heated particles will gain more energy and vibrate more. These molecules then bump into nearby particles and transfer some of their energy to them. This then continues and passes the energy from hot end to the cold end.

Thus the correct option is B.

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In order for 30mL of sodium hydroxide solution to completely react, 0.061 grams of potassium hydrogen phthalate are required.

A measurement of the amount of matter in an item, mass is a fundamental attribute of matter. It is a scalar quantity, usually expressed in grams (g) or kilograms (kg) (kg).

We must first develop and balance the chemical equation for the interaction between the two chemicals in order to determine the mass of potassium hydrogen phthalate needed to react with 30mL of sodium hydroxide at 0.01M. The correct answer is:

NaKC8H4O4 + H2O = KHC8H4O4 + NaOH

One mole of KHC8H4O4 combines with one mole of NaOH to create one mole of NaKC8H4O4 and one mole of water, as shown by the equation.

The number of moles of NaOH used in the reaction may then be calculated using the supplied NaOH concentration (0.01M) and the volume of NaOH used (30mL), using the formula:

volume x concentration equals moles of NaOH.

NaOH moles= 0.01 mol/L x 0.03 L x 0.0003 mol

We know that 0.0003 moles of KHC8H4O4 are required to thoroughly react with the NaOH utilized in the process because there is a 1:1 ratio in play.

Finally, using the formula: we can utilize the molar mass of KHC8H4O4 (204.22 g/mol) to determine the mass of KHC8H4O4 required.

mass = moles X molar mass

mass = 0.0003 mol X 204.22 mol = 0.061 g

Therefore, 30mL of 0.01M sodium hydroxide requires 0.061 grams of potassium hydrogen phthalate to completely react.

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The osmotic pressure of a solution made by absorbing 0.822 g of it within 300 cm 3 of water is 149 mm Hg at 298 K. The solute has a molar mass of 342 g mol 1.

Calculate the molar mass of the solution using the depression at the freeing point (T f). Next, determine the moles of solute using the molality equation. To get the molar mass, divide the solute's mass in grams by the number of moles.

The percentage of a solute in the solvent is one way to express a concentration of a solution. The percentage can be determined further in one of two ways the quantity determined by dividing the amount of the solute by the concentration of the sample.

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283.875 mL of ethanol are in a 0.750gallon sample of the gasohol. Therefore, the correct option is option A.

Ethanol, sometimes known as ethyl alcohol, is a chemical liquid having the formula C2H5OH. Its primary application is as a solvent. To comprehend the chemical composition of ethanol, you must first grasp what alkenes are.

Alkenes are carbon and hydrogen molecules containing at at least one double bond between two carbons. Ethene is an example of an alkene.

1 gall = 3.785 L

0.750gallon =?

0.750gallon ×3.785 L / 1 gallon

= 2838.75 ml

10% of  2838.75 ml= 283.875 mL

Therefore, the correct option is option A.

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The volume of the oxygen cylinder at a pressure of 3.0 atm is 11.25 L. The closest answer choice to this value is option C. 11 L.

We can use the ideal gas law, PV = nRT, to solve this problem. Here, P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature (assumed to be constant). Rearranging the equation, we get:

V = nRT/P

The number of moles of gas, n, can be found using the ideal gas law:

n = PV/RT

Substituting this expression for n into the equation for V and rearranging, we get:

V = PV/P = 600.0 L

So, at a pressure of 160.0 atm, the volume of the oxygen cylinder is 600.0 L. To find the volume of the oxygen cylinder at a pressure of 3.0 atm, we need to use the relationship between pressure and volume for a gas:

V1/V2 = P2/P1

Rearranging, we get:

V2 = V1 * (P2/P1) = 600.0 L * (3.0 atm / 160.0 atm) = 11.25 L

So, the volume of the oxygen cylinder at a pressure of 3.0 atm is 11.25 L. The closest answer choice to this value is (c) 11 L.

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Combination reaction, decomposition reaction , single displacement reaction and double displacement reactions are taking place in picture .

Define combination reaction.

When two or more compounds combine to create a single new substance, this reaction is called a combination reaction. Synthesis reactions are another name for combination reactions. A+B⇒AB is the standard format for a combination reaction. Two components combining to create a compound is an example of a combination reaction.

When a less reactive element is pushed out of a compound that also contains a more reactive ingredient, the result is a displacement reaction. Decomposition reactions occur when complex chemical entities split apart into smaller components. Decomposition reactions often demand energy input. For instance, the thermal breakdown of potassium chlorate (KClO3) is a typical technique used in laboratories to generate oxygen gas.

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The term mole concept is used here to determine the moles of oxygen gas produced. When 6.50 moles of Calcium oxide decomposes, 3.25 moles of oxygen gas is produced.

One mole of a substance is that amount of it which contains as many particles or entities as there are atoms in exactly 12 g of carbon-12.

The given reaction is:

2 CaO → 2 Ca + O2

Here 2 moles of calcium oxide decomposes to give 2 moles of calcium and 1 mole of oxygen. So 6.50 moles CaO gives:

6.50 × 1 mol O₂ / 2 mol CaO = 3.25 mol O₂

Thus 3.25 mol O₂ is produced.

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Add together all the atomic masses of the individual atoms to determine the molarity of the a compound with numerous atoms. Ca(NO3)2 has a molar mass of 164.1 g/mol.

The density in grams with one molar (6.02 x 1023 molecules) of a metal is its molar mass. Therefore, in the majority of circumstances, all you need to do is look at an element's atomic mass (atoms) on the periodical table to determine its molar mass. Keep in mind that it is the number that is listed beneath the element's name and symbol.

The mass in kilograms of one mole of an substance is its molar mass. As this video demonstrates the computed molar mass can then be used to translate between mass and the quantity of moles in the substance.

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The total mass of sugar that is available in 12000 kg is given as 2400

The equation is y = 0.004256x + 0.9857

sugar solution has a density of 1.07

The concentration (X axis) is 20%  at 1.07.

We are aware that the solution weighs 12000 kg.

So, the mass of sugar makes up 20% of the 12000 kg.

20 / 100 x 12000 = 2400

I have the answer: 2400 Kg.

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Answer:

172 ml

Explanation:

To determine the volume to which you should dilute 133 ml of a 7.95 M CuCl2 solution so that 52.0 mL of the diluted solution contains 4.20 g of CuCl2, you need to use the equation for molarity:

M = moles of solute / liters of solution

We know the moles of solute, which can be calculated from the mass of CuCl2 using the molar mass:

4.20 g CuCl2 / (1 mole CuCl2 / 134.45 g CuCl2) = 0.0311 moles CuCl2

And we know the volume of the diluted solution, which is 52.0 mL or 0.052 L. Plugging in these values, we can solve for the molarity of the diluted solution:

M = 0.0311 moles CuCl2 / 0.052 L = 0.596 M

Now that we know the molarity of the diluted solution, we can use the equation for dilution to determine the volume to which we should dilute the original solution:

C1V1 = C2V2

Where C1 and V1 are the concentration and volume of the original solution and C2 and V2 are the concentration and volume of the diluted solution. Plugging in the values, we have:

7.95 M * V1 = 0.596 M * 0.133 L

Solving for V1, we get:

V1 = 0.133 L * 0.596 M / 7.95 M = 0.0172 L = 172 mL

So, to achieve the desired concentration in 52.0 mL of the diluted solution, you should dilute 133 mL of the 7.95 M CuCl2 solution to a volume of 172 mL

Answer:

The coefficient of oxygen in the balanced equation is 2.

Explanation:

Answer:

Explanation:

According to the activity series of metals, the reaction that would not be expected to occur is:

Al3+(aq) + Cr(s) → Cr3+(aq) + Al(s)

This is because aluminum (Al) is higher on the activity series and is less likely to be oxidized (lose electrons), while chromium (Cr) is lower on the activity series and is more likely to be oxidized. In this reaction, aluminum would have to be oxidized, which is not consistent with its position on the activity series.

All of the other reactions listed are expected to occur because they involve the transfer of electrons from a metal that is lower on the activity series to a metal that is higher on the series.

The type of reaction that would most likely occur when magnesium reacts with bromine is synthesis.

The correct option is B.

Synthesis reactions are a particular kind of reaction in which several reactants combine to create a single product. It is a sort of chemical reaction in which two or more straightforward chemicals combine to create a more complicated end result. elements or compounds could be the reactants.

The reaction between magnesium and bromine is an example of a synthesis reaction and is shown below:

Mg + Br₂ ---> MgBr₂

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13.8 kJ [tex]mol-1\\[/tex] is  strain energy for the conformer pictured below, using strain energy increments from the table.

The problem is based on the concept of used strain energy  in the conformers.

When two non bonded groups approach each other, it results in repulsion and causes steric strain in the molecule.

Structure of conformer in eclipsed form in Newman projection is as follows:

4.0 kJ mo is energy of eclipsed H-H bond

Energy of eclipsedН-СH, 3 bond is 5.8 kJ mol

Total strain energy of conformer (S,)

E 2x eclipsed (H-H)+ eclipsed (H-CH,)

Replace eclipsed (H-H) with 4.0 kJ mol and eclipsed (H-CH) with 5.8 kJ mol to get

E 2x4.0 kJ mol +5.8 kJ mol =13.8 kJ mol

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It has a metallic sheen that denotes the presence of lead sulphide and gold (Au). However the fact that it is unaffected by a hammer shows that quartz may also be present.

As sample W is an excellent electrical conductor and does not melt when heated with a Bunsen burner, the presented findings of the research indicate that it is gold (Au). When Sample X breaks into several pieces when struck with a hammer and dissolves in 6 MHNO3, it is lead sulphide (PbS). Since Sample Z is unaffected by hammer blows and does not melt when heated with a Bunsen burner, yet does not dissolve in 6 MHNO3, it is a combination of gold (Au), lead sulphide (PbS), and quartz (SiO2). It also exhibits a metallic shine, which denotes the presence of lead sulphide and gold. Nonetheless, the fact that a hammer has no effect on it shows that quartz may also be present.

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Answer:

10 moles of NaClO3 were needed to produce 30 moles of O2

Explanation:

From the equation, we know that 2 moles of NaClO3 produce 3 moles of O2. To find out how many moles of NaClO3 are needed to produce 30 moles of O2, we divide the number of moles of O2 by the mole ratio:

30 moles O2 / 3 moles O2 per 2 moles NaClO3 = 10 moles NaClO3

So, 10 moles of NaClO3 were needed to produce 30 moles of O2.

Explanation:

The main function of the mitochondria in a plant cell is to generate energy for the cell through the process of cellular respiration. The mitochondria convert the energy stored in food into a form that the cell can use through the oxidation of glucose and other organic molecules, which produces ATP (adenosine triphosphate) - the energy currency of the cell. Additionally, the mitochondria play a role in regulating the cell's metabolic processes and also in controlling cell death (apoptosis).

Group 1 (Alkali Metals)

Group 2 (Alkaline Earth Metals) 

Group I: Lithium and sodium make up the elements.

Chlorine and bromine are the elements in Group I7.

Neon and argon are the elements in Group I8.

What are halogens?

The only periodic table group with elements in all three of the primary states of matter at standard pressure and temperature—though not much above room temperature—is the group of halogens. In groups 1 and 15, the same holds true if white phosphorus is assumed to be the standard state.

All of the halogens react with hydrogen to create acids.

Minerals or salts are often used to manufacture the majority of halogens.

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Consider 1.00 mole of hydrogen gas, H₂. The number of molecules in  H₂ is12.044 × 10²³  molecules. The number of hydrogen atoms is 12.044 × 10²³  molecules and the mass of the sample is 2 g.

The moles of the hydrogen = 1 mol

The one mole of the substance = 6.022 × 10²³ atoms / molecules

The number of the hydrogen atoms in H₂ = 2 × 6.022 × 10²³ atoms

The number of the hydrogen atoms in H₂ = 12.044 × 10²³  atoms

The number of the hydrogen molecules in H₂ = 12.044 × 10²³  molecules

The molar mass of the  H₂ = 2 g/mol

The moles of the  H₂  = mass / molar mass

The mass of the  H₂  = moles × molar mass

The mass of the  H₂  = 1 ×2

The mass of the  H₂  = 2 g

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Ml without changing the temperature,The pressure of the gas is [tex]16.8atm[/tex]

The pressure of a gas is related to its volume and temperature by the ideal gas law:

PV = nRT

n is the number of moles of gas, P is the pressure, V is the volume, R is the ideal gas constant, and T is the temperature.

Since we know the initial pressure, volume, and temperature, we can rearrange the equation to solve for n:

[tex]n =\frac{ PV}{RT}[/tex]

Now that we know the amount of gas, we can use the same equation to calculate the pressure when the gas is compressed to 10. Ml without changing the temperature:

[tex]P = \frac{nRT}{V}\\\\P = (\frac{PV}{RT}) * (\frac{RT}{V})\\\\P = (2.0 atm * 200. Ml) / (0.08206 L atm K ^{-1} mol^{-1} * 298.15 K) \\\\P = 16.8 atm[/tex]

Therefore the pressure of the gas is [tex]16.8atm[/tex]

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The new temperature of the gas can be calculated using the ideal gas law: PV = nRT. Rearranging the equation to solve for temperature, we get: T = (PV)/(nR). With a volume of 400 ml, a pressure of 1 atm, and a constant R of 0.08206 L·atm/K·mol, the new temperature of the gas is 59.95°C.

Answer:

88.42°C

Explanation:

The temperature change of a gas can be calculated using Gay-Lussac's law, which states that the pressure-volume ratio of a gas is directly proportional to its temperature. The equation is:

P1/V1 = P2/V2 = (nRT)/V = constant

where P1 and V1 are the initial pressure and volume, P2 and V2 are the final pressure and volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

Given the initial volume and temperature, we can rearrange the equation to solve for the final temperature:

T2 = (P1V1)/(nR) * (V2/P1)

Since the pressure is constant, we can simplify the equation to:

T2 = T1 * (V2/V1)

We can convert the temperature to Kelvin:

T1(K) = 45 + 273.15 = 318.15 K

T2(K) = T1 * (400/350) = 318.15 * (400/350) = 361.57 K

Finally, we can convert back to Celsius:

T2(°C) = 361.57 - 273.15 = 88.42 °C

The new temperature is 88.42°C.


ALLEN

The circumstances listed below would accelerate diffusion within cells: 1. Boost the temperature. b. High concentration gradient e.

The spontaneous movement of particles from a high concentration area to a low concentration area is known as diffusion. In gases, liquids, and solids, it happens spontaneously as a passive transport mechanism. Temperature, concentration gradient, particle size, and the existence of barriers or impediments are some of the variables that affect the rate of diffusion. Several biological activities, such as the flow of gases into and out of cells, the transportation of nutrients and waste products across cell membranes, and the control of ion concentrations in cells, all depend on diffusion. Diffusion theory is fundamental to many disciplines, including chemistry, biology, physics, and engineering.

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One mole of a substance is equal to 6.022 × 10²³ units of that substance The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.

Hence, the first conversion is the number fundamentally which is 6.022x1023 particles 1 mole to convert an integer of moles to particles and the other one is the reciprocal of Avogadro's number which is 1 mole 6.022x1023 particles to convert a number of specks to a number of moles.

The word mole mentions Avogadro's number of a substance. For example, a mole of carbon-12 atoms happens to be 12 grams. Moreover, a mole of hydrogen particles is 2 grams while a mole of hydrogen conversion atoms occurs to be 1 gram.

So we can conclude that conversion allying Avogadro's Number of Atoms to Moles and Vice Versa

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The two possible conversion factors using Avogadro's number are:

1 mole = Avogadro's number of particles

So, the conversion factor is Avogadro's number of particles/mole.

1 mole = Avogadro's number of particles

So, the conversion factor is 1 mole/Avogadro's number of particles.

Avogadro's number is described as the number of atoms, ions, or molecules in one mole of a substance.

The Avogadro constant has defining constant with an exact value of 6.02214076×10²³ reciprocal moles.

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The total pressure of the mixture is 356585 Pa.

First  we can use the formula:

partial pressure = mole fraction * total pressure

where the mole fraction is the number of moles of a gas divided by the total number of moles in the mixture.

The total number of moles in the mixture is:

n_total = n_He + n_Ne + n_Ar = 0.765 mol + 0.330 mol + 0.110 mol = 1.205 mol

The mole fraction of each gas in the mixture is:

X_He = n_He / n_total = 0.765 mol / 1.205 mol = 0.6357

X_Ne = n_Ne / n_total = 0.330 mol / 1.205 mol = 0.2743

X_Ar = n_Ar / n_total = 0.110 mol / 1.205 mol = 0.0909

The total pressure of the mixture is equal to the sum of the partial pressures of each gas:

P_total = P_He + P_Ne + P_Ar

To calculate each partial pressure, we can use the formula:

partial pressure = mole fraction * total pressure

P_He = X_He * P_total = 0.6357 * P_total

P_Ne = X_Ne * P_total = 0.2743 * P_total

P_Ar = X_Ar * P_total = 0.0909 * P_total

We can now use the ideal gas law to calculate the total pressure of the mixture. The ideal gas law is:

PV = nRT

where

Converting the volume and temperature to the appropriate units, we get:

V = 10.00 L = 0.01 m³

T = 25 °C = 298 K

Substituting the given values and solving for P, we get:

P_total = n_total * R * T / V = 1.205 mol * 8.314 J/(mol·K) * 298 K / 0.01 m³ = 356585 Pa

Therefore, the partial pressure of each gas in the mixture is:

P_He = 0.6357 * 356585 Pa = 226789 Pa

P_Ne = 0.2743 * 356585 Pa = 97782 Pa

P_Ar = 0.0909 * 356585 Pa = 32414 Pa

And the total pressure of the mixture is:

P_total = P_He + P_Ne + P_Ar = 356585 Pa

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Answer:

Chromium(III) phosphate trihydrate

Explanation:

The correct IUPAC name for CrPO4 · 3H2O is Chromium(III) phosphate trihydrate.

The three oxygen atoms can occupy three distinct positions in space. These positions can be identified by their coordinates in three-dimensional space.

The space is an area or volume that exists between two or more objects, areas, or surfaces. In scientific terms, it is the distance between two points in three-dimensional space. It can also refer to a gap between two events, feelings, or other entities. In mathematics, space is a measure of the dimensionality of a given set, which can be described as the number of degrees of freedom within a given set. In physics, space is the physical realm of existence that encompasses all matter and energy. It is a fundamental component of reality and the universe.

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