# Lesson Worksheet: Standard Molar Gas Volumes Chemistry • 10th Grade

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

Q1:

What is the volume of 2.0 mol of oxygen at room temperature and pressure (RTP)?

Q2:

At room temperature and pressure (RTP), a sample of oxygen occupies a volume of 10.0 L. How many moles of gas molecules are present, to 3 decimal places?

Q3:

Which of the following is the correct definition of room temperature and pressure (RTP)?

• A, 1 atm
• B, 1 bar
• C, 1 bar
• D, 1 bar
• E, 1 atm

Q4:

What is the volume of 4.50 mol of nitrogen at room temperature and pressure (RTP)?

• A108 L
• B0.188 L
• C5.33 L
• D24.1 L
• E101 L

Q5:

What volume would 56.0 g of nitrogen trifluoride occupy at room temperature and pressure (RTP), to 1 decimal place?

Q6:

What is the molar volume of a gas at room temperature and pressure, to the nearest whole number?

Q7:

Sulfur hexafluoride is a relatively dense gas. What volume would 100 g of sulfur hexafluoride occupy at room temperature and pressure (RTP), to 3 significant figures? The molar mass of sulfur hexafluoride is 146 g/mol.

Q8:

An industrial company wants to produce dimethyl ether through the dehydration of methanol represented by the following equation:

What mass of methanol would the company need to use to produce 1,200 dm3 of dimethyl ether at room temperature and pressure? Give your answer in units of kilograms.

Q9:

Methane reacts with steam to produce carbon monoxide and hydrogen, according to the following chemical equation:

What volume of , at room temperature and pressure (RTP), would 6 g of methane produce?

Q10:

A small balloon requires 9.3 litres of helium gas, at room temperature and pressure, to lift a 10 g object. Would 0.4 moles of helium gas be enough to lift the object?

• AYes
• BNo