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 (O)2 at room temperature and pressure (RTP)?

Q2:

At room temperature and pressure (RTP), a sample of oxygen (O)2 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)?

  • A25C, 1 atm
  • B20C, 1 bar
  • C0C, 1 bar
  • D25C, 1 bar
  • E20C, 1 atm

Q4:

What is the volume of 4.50 mol of nitrogen (N)2 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 (CHOCH)33 through the dehydration of methanol represented by the following equation: 2CHOHCHOCH+HO3332

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: CH()+HO()CO()+3H()422gggg

What volume of H2, 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

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