Chapter 13 Gas Quiz Practice

A gas occupies 2.0 L at STP. What volume will the gas occupy if the pressure is increased to 2.0 atm, and the temperature is kept constant?

• 4.0 L

• 1.0 L

• 0.50 L

• 2.0 L

When will the molecules of all samples of ideal gases have the same average kinetic energies?

• at constant volume

• at constant temperature

• at constant amount

• at constant pressure

A sample of gas is held in a 10.0-L volume at 175 kPa. The temperature is kept constant while the volume is decreased until the pressure is 350 kPa. What is the new volume of the gas?

• 1.0 L

• 5.0 L

• 10.0 L

• 175 L

At constant pressure, a sample of 1 liter of gas is heated from 27 degrees Celsius to 127 degrees Celsius. What is the final volume?

• 0.75 L

• 0.21 L

• 4.7 L

• 1.3 L

A sample of gas starts at 1.00 atm, 0.00 degrees Celsius, and 30.0 mL. What is the volume if the temperature increases to 127 degrees Celsius and the pressure decreases to 0.500 atm?

• 0.0113 mL

• 87.9 mL

• 22.0 mL

• 41.0 mL

How can the molar volume of gas be defined?

• the volume that one mole occupies at STP

• the volume that one gram occupies at STP

• the volume that one mole occupies at 100°C and 1 atm pressure

• the volume that one gram occupies at 100°C and 1 atm pressure

What will happen to a real gas when the temperature is lowered and the pressure is raised?

• The gas eventually condenses to become a liquid.

• The gas does not change.

• The gas expands.

• The number of gas particles doubles.

What is the molar mass of a gas if 0.104 g of the gas occupies 48.7 mL at STP?

• 28.2 g/mol

• 34.5 g/mol

• 40.0 g/mol

• 47.9 g/mol

In the Ideal Gas Law equation, the units of R will commonly change based on different units of ________.

• pressure

• volume

• temperature

• moles

Which of the following gases will behave most like an ideal gas?

PV = nRT

• H2O

• He

• C4H10

• NH3