Gases

If the temperature of a gas remains constant, then the pressure of the gas will increase if the...

• a. mass of the gas molecules decreases.

• b. diffusion of the gas molecules increases.

• c. size of the container is decreased.

• d. number of gas molecules in the container is decreased.

Equal volumes of ideal gases at the same temperature and pressure contain equal numbers of

• a. protons.

• b. ions.

• c. particles.

• d. electrons.

At constant temperature and pressure, the volume of a gas is directly

proportional to its

• a. molar mass.

• b. number of moles.

• c. density at STP.

• d. rate of diffusion.

The pressure of a gas is directly proportional to the number of moles of the gas if both volume and _______________________ are constant.

• temperature

• pressure

• gas constant

• all of them

If a fixed quantity and volume of a gas undergoes a change in temperature, it will also experience a change in _______________________.

• Pressure

• Volume

• Temperature

• All of them

The pressure of a fixed mass of gas varies

directly with the kelvin temperature at

constant volume.

• Dalton’s law

• Charles’s law

• Gay-Lussac’s law

• Avogadro’s law

The volume of a fixed mass of gas varies

inversely with the pressure at constant

temperature.

• Dalton’s law

• Charles’s law

• Gay-Lussac’s law

• Avogadro’s law

• Boyle’s law

Equal volumes of gases at the same

temperature and pressure contain equal

numbers of molecules.

• Dalton’s law

• Charles’s law

• Gay-Lussac’s law

• Avogadro’s law

• Boyle’s law

The volume of a fixed mass of gas varies directly with the kelvin temperature at constant pressure.

• Dalton’s law

• Charles’s law

• Gay-Lussac’s law

• Avogadro’s law

• Boyle’s law

The volume of a gas at 7.00°C is 49.0 mL. If the

volume increases to 74.0 mL and the pressure is

constant, what will the temperature of the gas be?

• 150.°C

• 5.7 × 102 mm Hg

• 236 L

• 22.3 g