# Lesson Worksheet: Molar Gas Volume Chemistry

In this worksheet, we will practice using molar gas volume, under standard conditions, to calculate the volume and number of moles of a gas.

Q1:

What is the equation relating the volume of a gas, , to the number of moles of the gas, , and its molar volume, ?

• A
• B
• C
• D
• E

Q2:

Which of the following statements best describes molar volume?

• AThe volume that 1 gram of gas takes up
• BThe volume that 1 atm of gas takes up
• CThe volume that 1 liter of gas takes up
• DThe volume that 1 mole of gas takes up

Q3:

Which of the following is the correct definition of the standard molar gas volume?

• AIt is the volume occupied by one gram of any gas at a given temperature and pressure.
• BIt is the volume occupied by one gram of any gas divided by temperature and pressure.
• CIt is the volume occupied by one mole of any gas divided by temperature and pressure.
• DIt is the volume occupied by one mole of any gas at a given temperature and pressure.

Q4:

What volume would 8.5 g of gas occupy at standard temperature and pressure (STP) taking the molar gas volume to be 22.4 L/mol? Give your answer in liters to one decimal place. [, ]

Q5:

What is the volume of 0.2 mol of at standard temperature and pressure (STP), taking the molar gas volume to be 22.4 L/mol? Give your answer to 1 decimal place and in cubic decimeters.

Q6:

At standard temperature and pressure (STP), a sample of occupies a volume of 2.5 L. How many moles of are present in this sample? Take the molar gas volume to be 22.4 L/mol and give your answer to 2 decimal places.

Q7:

A 50 L tank contains 153 moles of natural gas. Another tank contains 63 moles of the same gas at the same conditions of temperature and pressure.

What is the volume of the second tank?

• A41.2 L
• B20.6 L
• C121.4 L
• D192.8 L

Q8:

At STP, calculate, to the nearest whole number, the volume of gas produced by mixing 20 g of gas with an excess amount of oxygen gas according to the following equation:

[, ]

• A45 L
• B8 L
• C23 L
• D16 L

Q9:

Which of the following is the best description of standard temperature and pressure?

• A0 atm,
• B25 atm,
• C1 atm,
• D1 atm,
• E2 atm,

Q10:

According to Avogadro’s law, what happens to the volume a gas occupies if the number of moles increases?

• AIt stays the same.
• BIt increases.
• CIt decreases.