Gas Laws Practice

A gas with a volume of 4.0 L at a pressure of 205 kPa is allowed to expand to a volume of 12.0 L. What is the pressure in the container if the temperature remains constant?

• 68.3

• 0.0146

• 615

• 0.00163

Calculate the new temperature when 6.00 L at 20.0 °C is compressed to 4.00 L.

• 195

• 0.00512

• 440

• 0.00228

A sealed container has a pressure of 1.5 atm at 25°C. If the temperature is raised to 125°C, what will be the new pressure?

• 2

• 1.12

• 7.5

• 0.3

A gas balloon has a volume of 106.0 liters when the temperature is 45.0°C and the pressure is 740.0 mm of mercury. What will its volume be at 20.0°C and 780.0 mm of mercury pressure?

• 92.7

• 44.7

• 103

• 109

A gas is heated from 263.0 K to 298.0 K and the volume is increased from 24.0 liters to 35.0 liters by moving a large piston within a cylinder. If the original pressure was 1.00 atm, what would the final pressure be?

• 0.777

• 0.605

• 1.65

• 0.73

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.

• 7.18 L 
• 7.81 L
• 4.63 L
• 4.36 L

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure. 

• 0 K 
• 107 K 
• 207 K 
• 307 K 

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

We use two R values: 0.0821 and 8.314. How do you know which to use for a problem?

• The units for pressure

• The units for temperature

• The units of volume

• The amount of moles

What is STP?

• 1 Degrees Celsius and 0 ATM

• 0 Degrees Celsius and 1 ATM

• 0 Kevin and 10 ATM

• 273 Celsius and 273 ATM