In the first 13. 0 s of the reaction, 0. 018 mol of o2 is produced in a reaction vessel with a volume of 0. 380 l. What is the average rate of the reaction during this time interval?.

A) Incorrect. It is not guaranteed that adding gas particles to the container will decrease the kinetic energy, as we don't know what energy those particles have to begin with.

B) Incorrect. We are not given any information that reveals that the container will break.

C) Incorrect. Because there are more particles, more collisions will occur in the container, increasing the likelihood that bonds may form between particles. This deviates from ideal gas behaviour.

D) Correct. Adding particles will increase the number of collisions that occurs as well as the overall pressure.

Option D

The empirical formula of a compound can be determined from the results of a combustion analysis. The empirical formula represents the simplest whole-number ratio of atoms in the molecule.

Here's how you can determine the empirical formula of the hydrocarbon based on the given information:

Determine the number of moles of CO2 produced:

moles = mass / molar mass

moles = [tex]22.0 g / (44.0 g/mol) = 0.5 mol[/tex]

Determine the number of moles of carbon in the sample:

moles of carbon = moles of CO2 produced / ratio of C:CO2

moles of carbon = [tex]0.5 mol / 1 : 1 = 0.5 mol[/tex]

Determine the number of moles of hydrogen in the sample:

moles of hydrogen = moles of CO2 produced / ratio of H:CO2

moles of hydrogen = [tex]0.5 mol / 1 : 2 = 0.25 mol[/tex]

Express the number of moles of each element as a whole number ratio:

moles of carbon / smallest number of moles = [tex]0.5 mol / 0.5 mol = 1[/tex]

moles of hydrogen / smallest number of moles =[tex]0.25 mol / 0.25 mol = 1[/tex]

So, the empirical formula of the hydrocarbon is CH, indicating that for every one carbon atom, there is one hydrogen atom in the molecule.

To find the molecular formula, you can use the empirical formula and the molar mass of the compound. The molecular formula is a multiple of the empirical formula and can be determined by dividing the molar mass of the compound by the empirical formula weight:

Empirical formula weight =[tex]12.0 g/mol + 1.0 g/mol = 13.0 g/mol[/tex]

Molecular formula multiple = molar mass / empirical formula weight

Molecular formula multiple = [tex]70 g/mol / 13.0 g/mol = 5.3846[/tex]

The molecular formula multiple is not a whole number, so we round up to the nearest whole number, which is 6. The molecular formula of the hydrocarbon is therefore 6 times the empirical formula, or C6H6.

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The formula of the neutral compound is CaO and the name of the compound is Calcium Oxide.

A compound is a substance formed when two or more elements chemically combine in fixed proportions. Compounds can be either molecules or ionic, and have unique physical and chemical properties. Molecule compounds are composed of atoms covalently bonded, meaning the atoms share electrons. Ionic compounds are composed of ions with a positive or negative charge; these ions are attracted to each other in a crystalline lattice structure. Compounds can be broken down into their separate elements by chemical means, such as electrolysis.

This compound is formed when one Calcium cation (Ca^2+) bonds with one Oxygen anion (O^2-). The two ions have opposite charges, so they attract and form a neutral compound with a charge of 0.

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There are 15.6 moles of Li2SO4 in 9.40 x 10^24 formula units after dividing by Avogadro's number.

The given problem involves converting the number of formula units of Li2SO4 to the corresponding number of moles. This conversion requires the knowledge of Avogadro's number, which is the number of particles (atoms, molecules, or ions) in one mole of a substance.

To calculate the number of moles of Li2SO4, we first divide the given number of formula units (9.40 x 10^24) by Avogadro's number (6.022 x 10^23 formula units/mol) to get the number of moles (15.6 mol).

The mole is a unit of measurement used in chemistry to express amounts of a substance. One mole of any substance contains the same number of particles as there are atoms in 12 grams of carbon-12. So, the mass of one mole of a substance is equal to its molecular weight in grams.

In this problem, the mass of Li2SO4 is not given, so we cannot calculate the mass of 15.6 moles of Li2SO4. However, we can say that 15.6 moles of Li2SO4 contain 9.40 x 10^24 formula units.

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The right response is option B, which involves subtracting the total of the standard entropy changes of the reactants from the total of the standard entropy changes of the products.

Calculating the standard entropy change for a process requires subtracting the sum of the standard entropy changes of the reactants from the sum of the standard entropy changes of the products after the stoichiometric coefficients are taken into account in the balanced equation for the process.

The formula S° = S°(products) - S°(reactants), where S° is the sum of the standard entropy changes of the reactants and products, may be used to determine the standard entropy change for a process. The stoichiometric coefficients in the balanced equation are automatically taken into account throughout the computation since the standard entropy change of the reactants is subtracted from the standard entropy change of the products.

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Answer: Decomposition

Explanation:

The compound, (Aluminum Oxide), decomposes to form Aluminum and Oxygen.

The elements of 'd' block elements are called the transition elements. All the 'd' block elements are good conductors of heat and electricity.

The transition elements are defined as those elements which contain partially filled d-orbitals in their atoms in ground state or in their ions in common oxidation states.

But 'Zn', 'Cd' and 'Hg' of group 12 contain a (n-1)d¹⁰ configuration in their atoms and their most common divalent ions. Hence they cannot be considered strictly as transition metals. Because they contain completely filled 'd' orbitals.

Thus the group 12 elements are not strictly considered as transition metals.

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Answer:

In a weakly acidic medium, nitrobenzene on electrolytic reduction gives aniline but under strongly acidic medium it gives p-aminophenol. In the alkaline medium, various mono and di-nuclear reduction products such as Azoxybenzene, Azobenzene are obtained.

The work done on the gas during the compression process is 0.0418 kJ/K.

The work done on the gas during a compression process can be calculated using the equation:

w = -P * (Vf - Vi)

where P is the external pressure, Vf is the final volume, and Vi is the initial volume. The negative sign indicates that work is done on the gas.

Using the given values, we have:

w = -3.00 atm * (2.00 L - 6.00 L)

The volume units need to be converted to liters:

w = -3.00 atm * (2.00 L - 6.00 L) = -3.00 atm * (-4.00 L) = 12.00 L * atm

Next, the pressure unit must be converted to pascals:

w = 12.00 L * atm * (1.00 atm) = 12.00 L * 1.01325 * 10^5 Pa = 12.16 kJ

Finally, the work done must be divided by the temperature to get the work done per kelvin:

w / T = 12.16 kJ / (292.0 K) = 0.0418 kJ/K

So the work done on the gas during the compression process is 0.0418 kJ/K.

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(a) tetrahedral (b) tetrahedral (c) bent or V-shaped (d) trigonal planar (e) bent or V-shaped (f) bent or V-shaped (g) linear (h) tetrahedral (i) trigonal planar

(a) The molecular structure is tetrahedral around the sulfur atom, with the four oxygen atoms forming the vertices of the tetrahedron.

(b) The molecular structure is tetrahedral around the chlorine atom, with the three oxygen atoms and hydrogen atom.

(c) The molecular structure is bent or V-shaped around the oxygen atom, with the two hydrogen atoms at the bottom of the V.

(d) The molecular structure is trigonal planar around the nitrogen atom, with the three oxygen atoms and hydrogen atom.

(e) The molecular structure is bent or V-shaped around the oxygen atom, with the hydrogen atom and nitrogen atom.

(f) The molecular structure is bent or V-shaped around the central oxygen atom, with the two other oxygen atoms at the bottom of the V.

(g) The molecular structure around each carbon atom is linear, with the two other carbon atoms forming a straight line with the carbon atom at the center.

(h) The molecular structure around the carbon atom is tetrahedral, with the two other carbon atoms and two fluorine atoms forming the vertices of the tetrahedron.

(i) The molecular structure around each carbon atom is trigonal planar, with the two other carbon atoms forming a straight line.

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--The complete question is, Describe the molecular structure around the indicated atom or atoms:

(a) the sulfur atom in sulfuric acid,

(b) the chlorine atom in chloric acid,

(c) the oxygen atom in hydrogen peroxide, HOOH

(d) the nitrogen atom in nitric acid,

(e) the oxygen atom in the OH group in nitric acid,

(f) the central oxygen atom in the ozone molecule,

(g) each of the carbon atoms in propyne,

(h) the carbon atom in Freon,

(i) each of the carbon atoms in allene--

With respect to the reaction shown, the type of compound that will form is a hemiketal, and the name of the reaction is "hemiketal formation.

A hemiketal is created when an alcohol reacts with a ketone, whereas a hemiacetal is created when an alcohol reacts with an aldehyde.

Organic substances called hemiacetal and hemiketal are hybrid molecules that have an ether group and a hydroxyl group in the same molecule.

The name of reaction that forms hemiketals and hemiacetals is called "hemiacetal formation" or "hemiketal formation," depending on the specific functional group involved.

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The reaction of AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) is an example of a double replacement reaction.

What happens in a double replacement reaction?

A double replacement reaction, also known as a double displacement reaction, is a type of chemical reaction in which two compounds react to form two new compounds by exchanging their positive ions. The reactants are typically in aqueous form, meaning they are dissolved in water, and the products can be solid, liquid, or aqueous.

In a double replacement reaction, the positive ions of two different compounds (in this case Ag+ and Na+) are exchanged, resulting in the formation of two new compounds (AgCl and NaNO3). The reactants are typically in aqueous form, meaning they are dissolved in water, and the products can be solid, liquid, or aqueous.

Therefore, The reaction of AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) is an example of a double replacement reaction.

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Answer:

0.0144 moles

Explanation:

To calculate the number of moles of gas in a volume of 4.5 liters, we use the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to convert the temperature to Kelvin:

37°C = 37 + 273.15 = 310.15 K

Next, we can plug in the known values into the ideal gas law and solve for n:

PV = nRT

(1.00 atm)(4.5 L) = (n)(0.0821 Latm/mol K)(310.15 K)

n = (1.00 atm)(4.5 L) / [(0.0821 Latm/mol K)(310.15 K)] = 0.0144 moles

So, it would take approximately 0.0144 moles of gas to fill an average man's lungs.


ALLLEN

Answer:

0.124 moles

Explanation:

PV = nRT, can be used, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature in Kelvin.

Converting the volume to liters and temperature to Kelvin:

V = 45 L

T = 37°C + 273.15 = 310.15 K

Plugging these values into the ideal gas law:

1.00 atm * 45 L = n * 0.0821 Latm/mol/K * 310.15 K

Solving for n:

n = (1.00 atm * 45 L) / (0.0821 Latm/mol/K * 310.15 K) = 0.124 mol

So, it would take about 0.124 moles of gas to fill an average man's lungs.

According to the stoichiometry of the mentioned chemical equation, 17.77 g of nitrogen gas is formed.

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

64 g of ammonium nitrite gives 36 g of nitrogen , thus, 32.5 g of ammonium nitrite will give 32.5 ×36/64=17.77 g.

Thus,17.77 g of nitrogen gas is formed.

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Explanation:

To calculate the volume of a gas mixture, you can use the Ideal Gas Law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to calculate the number of moles of Ne and Ar.

n(Ne) = 15.2 g / 20.18 g/mol = 0.755 mol

n(Ar) = 34.8 g / 39.95 g/mol = 0.871 mol

Next, we can use the total number of moles to find the volume of the mixture:

n(total) = n(Ne) + n(Ar) = 0.755 + 0.871 = 1.626 mol

V = nRT / P = (1.626 mol)(8.31 J/mol K)(26.7 + 273.15 K) / (7.24 bar) = 0.0254 m^3, or 25.4 liters.

So the volume occupied by the mixture of 15.2g Ne(g) and 34.8g Ar(g) at 7.24 bar pressure and 26.7°C is approximately 25.4 liters.

Answer:

20 hours

Explanation:

The time it takes for the truck to travel 2,200 km at a speed of 110 km/hr is calculated by dividing the total distance by the speed:

Time = Distance / Speed

Time = 2,200 km / 110 km/hr

Time = 20 hours

So it takes the truck 20 hours to cover the 2,200 km trip at a speed of 110 km/hr.

Aɳʂɯҽɾҽԃ Ⴆყ ɠσԃKEY ꦿ

Answer:

89.17 u.

Explanation:

he average atomic mass of funnium can be calculated as follows:

Atomic mass = (Relative abundance of first isotope * atomic mass of first isotope) + (Relative abundance of second isotope * atomic mass of second isotope)

Atomic mass = (50.69% * 78.92 u) + (100% - 50.69% * 80.92 u)

Atomic mass = 39.86 u + (49.31 u)

Atomic mass = 89.17 u

So, the average atomic mass of funnium is 89.17 u.

The water is colder than the sand because it requires more to change temperature. This is because the Specific heat of water is more than sand.

Specific heat capacity is the amount of thermal energy required to raise the temperature of a substance. Water has a very high specific heat capacity. On the other hand, sand and asphalt have a low specific heat capacity. This means the temperature changes faster.

Sand should heat up and cool faster than water.

This is because water has a higher specific heat than sand, so it takes a lot of heat or energy to raise the temperature of water by 1 degree, whereas it takes relatively little energy to raise the temperature of sand by 1 degree.

And also,

When Brad was swimming in the ocean, he noticed that the sand was hotter than the water in the ocean.

Water is colder than sand because it takes more energy to change its temperature than sand.

This is because the specific heat of water is greater than that of sand. Due to this, sand cools and heats up faster than water.

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The final answer is: T = 401 K

Celsius temperature scale is a metric temperature scale that is commonly used in most countries around the world. It is based on the Celsius temperature scale, which is defined by the melting and boiling points of water at standard atmospheric pressure.

How to convert the temperature from Celsius to Kelvin (the SI unit of temperature)

First we simply add 273.15 to the Celsius temperature:

T(K) = T(°C) + 273.15

In this case, T = 128. °C. Substituting this into the above equation, we get:

T(K) = 128. °C + 273.15 = 401.15 K

Therefore, the temperature in SI units is 401.15 K.

Since the given temperature has three significant digits, the converted temperature should also have three significant digits.

Therefore, the final answer is: T = 401 K

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Lightning is actually an enormous display of the concept of Electro hydrodynamics.

Lightning is a sudden electrostatic discharge that occurs within a thunderstorm, creating a flash of light and a loud thunderclap. It is caused by the buildup and release of electrical energy in the atmosphere, typically between clouds, or between a cloud and the ground.

It is a natural electrostatic discharge called lightning occurs when two electrically charged regions, one in the atmosphere and one on the ground, momentarily neutralize one another. This results in the instantaneous release or discharge of an energy equivalent to one gigajoule.

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If the initial pressure was 400 torrs,  the pressure when this reaction is complete​ is  1000 torrs.

The given equation is 2NOBr(g) -> 2NO(g) + Br2(g)

This is a decomposition reaction, which means that the total number of moles of gas will increase.

From the balanced chemical equation, we can see that 2 moles of gas are produced for every 2 moles of NOBr consumed. Therefore, the number of moles of gas will double when the reaction is complete.

Let x be the final pressure of the gas mixture in torrs.

Initially, the pressure of NOBr is 400 torrs, and the initial pressure of NO and Br2 is 0 torrs.

When the reaction is complete, 2 moles of gas will be present for every 1 mole of NOBr initially present. Therefore, the final pressure of the gas mixture is:

x = (2 moles of NO + 1 mole of Br2) / (2 moles of NOBr) x 400 torrs

x = (2 + 1/2) x 400 torrs

x = 1000 torrs

Therefore, the pressure of the gas mixture when the reaction is complete is 1000 torrs.

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217.8 mL volume of 0.685 M HCl are required to react completely with 7.47 g of CaCO3.

How to calculate the volume of HCl needed?

The balanced chemical equation for the reaction between HCl and CaCO3 is:

2HCl + CaCO3 → CaCl2 + CO2 + H2O

From the equation, we can see that 2 moles of HCl are required to react with 1 mole of CaCO3. We can use this stoichiometric ratio to calculate the amount of HCl required to react with 7.47 g of CaCO3.

Step 1: Calculate the number of moles of CaCO3.

molar mass of CaCO3 = 40.08 g/mol (Ca) + 12.01 g/mol (C) + 3(16.00 g/mol) (O) = 100.09 g/mol

moles of CaCO3 = mass / molar mass = 7.47 g / 100.09 g/mol = 0.0746 mol

Step 2: Calculate the number of moles of HCl required.

From the balanced equation, we need 2 moles of HCl for every 1 mole of CaCO3.

moles of HCl = 2 x moles of CaCO3 = 2 x 0.0746 mol = 0.1492 mol

Step 3: Calculate the volume of HCl required.

We are given the concentration of HCl as 0.685 M, which means there are 0.685 moles of HCl per liter of solution.

volume of HCl = moles of HCl / concentration of HCl

volume of HCl = 0.1492 mol / 0.685 mol/L = 0.2178 L

To convert the volume to milliliters, we multiply by 1000:

volume of HCl = 0.2178 L x 1000 mL/L = 217.8 mL

Therefore, 217.8 mL volume of 0.685 M HCl are required to react completely with 7.47 g of CaCO3.

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The new volume of the gas is 25.0 mL, which is half of the original volume of 50.0 mL.

Gas is a state of matter that is composed of particles with no definite shape or volume. It is composed of molecules that are in constant motion, colliding with each other and the walls of the container in which they reside. Gas can exist in either a gaseous or liquid state, depending on the temperature and pressure.

The change in volume of a gas is directly proportional to the change in pressure if the temperature is kept constant. This means that if the pressure is doubled, the volume of the gas is halved.
This means that if the pressure of the gas is increased from 20.0 atm to 40.0 atm, the volume of the gas is halved.
This means that the new volume of the gas is 25.0 mL, which is half of the original volume of 50.0 mL.

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Answer:

25.0 mL

Explanation:

we will use Boyle's law for this example. P1V1 = P2V2

p1 = 20.0

v1 = 50.0

p2 = 40.0

we are solving for V2

[tex]v2 = \frac{50 x 20}{40}[/tex]

= 25

The rank of the solutions from lowest to highest freezing point is: 0.10 m NH4NO3 < 0.15 m MgBr2 < 0.30 m C6H6O2.

1. 0.30 m C6H6O2: Freezing Point Depression = -iKf m, where i is the van't Hoff factor (2 for a nonelectrolyte) and Kf is the cryoscopic constant. The van't Hoff factor for C6H6O2 is 1, so Freezing Point Depression = -Kf m.

2. 0.15 m MgBr2: Freezing Point Depression = -2Kf m, where 2 is the van't Hoff factor and Kf is the cryoscopic constant.

3. 0.10 m NH4NO3: Freezing Point Depression = -3Kf m, where 3 is the van't Hoff factor and Kf is the cryoscopic constant.

Therefore, the rank of the solutions from lowest to highest freezing point is: 0.10 m NH4NO3 < 0.15 m MgBr2 < 0.30 m C6H6O2

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48 gm is the minimum amount of ammonium carbonate that reacts to produce 1.0 mole of ammonia.

The chemical formula for ammonium carbonate is (NH₄)[tex]_2[/tex]CO₃. It is employed as a souring agent as well as smelling salt because it easily degrades to gaseous carbon dioxide and ammonia when heated.

It is also called as cook's ammonia and was the forerunner of the contemporary leavening ingredients baking soda as well as baking powder. It is a constituent of what was previously known called sal volatile as well as salt of hartshorn, and when cooked, it has a strong odor.

(NH₄)[tex]_2[/tex]CO₃ → 2 NH₃ + CO₂ + H₂0

2 moles of ammonia are produced from 1 mole of ammonium carbonate. 0.5 moles of ammonium carbonate will be needed to produce 1 mole of ammonia.

Mass = moles × molar mass

       = 0.1 mol × 96.09 g/mol

       = 48 gm

Therefore, 48 gm is the minimum amount of ammonium carbonate that reacts to produce 1.0 mole of ammonia.

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The mass percent of water in IrBr₃･4 H₂O is  14.4%.

To find the mass percent of water in  IrBr₃･4 H₂O, first determine the mass of water present in the compound and then divide it by the total mass of the compound and multiply by 100 to express the answer as a percentage.

Let's assume that the molecular weight of IrBr3•4 H2O is 500 g/mol. In that case, the mass of water present in the compound would be 4 x 18 g/mol (the molecular weight of water) = 72 g. The total mass of the compound is 500 g, so the mass percent of water in  IrBr₃･4 H₂O can be calculated as follows:

(72 g / 500 g) x 100 = 14.4%

So, the mass percent of water in IrBr₃･4 H₂O is 14.4%.

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Answer:

one atom of sodium has a mass of approximately 37.9968 x 10^-24 grams.

Explanation:

The atomic mass of sodium is approximately 22.99 atomic mass units. To convert from atomic mass units to grams, we multiply by the conversion factor of 1.6605 x 10^-24 g/atomic mass unit:

mass (g) = 22.99 atomic mass units * (1.6605 x 10^-24 g/atomic mass unit) = 37.9968 x 10^-24 g

So one atom of sodium has a mass of approximately 37.9968 x 10^-24 grams.

In the electromagnetic spectrum,  the energy of a photon of wavelength X₂ = 0.152 nm is 3.021×10[tex]^-35[/tex] m.

The electromagnetic  radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all  electromagnetic waves travel at  same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.These are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.

Where energy is given by equation  as ,E= hc/λ= 6.626×10[tex]^-34[/tex]×3×10⁸/0.152×10[tex]^-9[/tex]=130.77×10[tex]^-17[/tex] J.

Thus, the energy of a photon of wavelength X₂ = 0.152 nm is 3.021×10[tex]^-35[/tex] m.

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Answer:

Explanation:

The balanced chemical equation for the reaction between calcium oxide (CaO) and carbon dioxide (CO2) to form calcium carbonate (CaCO3) is:

CaO + CO2 -> CaCO3

From the equation, we can see that for every 1 mole of CaO, 1 mole of CO2 is needed to form 1 mole of CaCO3. If we have 5 grams of CaO, we can calculate the number of moles as follows:

5 g CaO / 56 g CaO/mol = 0.089 mol CaO

Since we need an equal number of moles of CO2, we can calculate the mass of CO2 needed as follows:

0.089 mol CO2 * 44 g CO2/mol = 3.9 g CO2

To calculate the volume of CO2 at standard temperature and pressure (STP), we need to know its molar volume, which is 24.45 L/mol. Using this, we can calculate the volume of CO2 as follows:

0.089 mol CO2 * 24.45 L CO2/mol = 2.16 L CO2

So, 5 grams of CaO will result in the formation of 5 grams of CaCO3, and the volume of CO2 produced will be 2.16 liters.