Gas Law Review C21

A 2.00-liter sample of nitrogen gas at 27° C and 600. millimeters of mercury is heated until it occupies a volume of 5.00 liters. If the pressure remains unchanged, the final temperature of the gas is

• 68^o C

• 120^o C

• 477^o C

• 677^o C

Tags

NGSS.HS-PS3-2

The system shown in the diagram is held at 28 °C. At this temperature, the vapor pressure of water is 28 millimeters of mercury. The partial pressure of O₂(g) in the system is

• 28 mm Hg

• 56 mm Hg

• 133 mm Hg

• 161 mm Hg

Hydrogen gas is collected over water at 24° C. The total pressure of the sample is 755 millimeters of mercury. At 24° C, the vapor pressure of water is 22 millimeters of mercury. What is the partial pressure of the hydrogen gas?

• 22 mm Hg

• 733 mm Hg

• 755 mm Hg

• 760 mm Hg

A balloon of Argon gas has a volume of 150. mL when its pressure is 0.647 atm. What will the pressure of the gas be at a volume of 98.3 mL if the temperature remains constant?

• 0.987 atm

• 1.53 atm

• 2.36 atm

• 97.1 atm

A balloon of helium gas occupies a volume of 1 L at 32°C. What volume will the gas occupy if we put it in a ice bath at a temperature of 0°C, assuming pressure remains constant? HINT: Temperature units MUST be in Kelvin!

• 0 L

• 1.11 L

• 895 mL

• 632 mL

At STP, 1 mole of hydrogen gas (or ANY other gas for that matter) has a volume of 22.4 L. What would be the volume of a balloon if we used 0.15 moles hydrogen gas to fill it up?

• 0.0067 L

• 149 L

• 0.0067 mL

• 3.36 L

If the pressure exerted by a gas at 25 degrees C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?

• .002766 mole

• .0069 mol

• 2.766 mol

• 9.887 mol

Gases have...

• A definite shape and volume

• A definite shape but no definite volume

• No definite shape but a definite volume

• No definite shape or volume

What happens to the average kinetic energy of matter when it is heated?

• It increases
• It decreases 
• It doesn't change
• It cannot be determined

Tags

NGSS.HS-PS3-2

If the temperature of a gas increase, the pressure...

• Decreases

• Increases

• Does not change