Gas Laws R

A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL?

• 57.5⁰C
• 57.5 K
• 330.5 K
• 330.5⁰C

If 200 mL of a gas at 27°C is cooled to -33°C at a constant pressure, the volume will be

• 250 mL
• 204 mL
• 196 mL
• 160 mL

A gas occupies 4.31 liters at a pressure of 0.755 atm. Determine the volume if the pressure is increased to 1.25 atm.

• 2.6L

• 2.6mL

• 2.6kL

• 260L

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

A sample of gas has a volume of 0.600 L at 30°C and a pressure of 0.8 atm. What is the number of moles in this sample?

• 0.2 mol

• 0.02 mol

• 14.4 mol

• 145.4 mol

Three gases, Ar, N2 and H2 are mixed in a 500L container. Ar has a pressure of 255 torr, N2 has a pressure of 228torr and H2 has pressure of 752torr. What is the total pressure in the container?

• 483torr
• 270torr
• 1235torr

Calculate the partial pressure of H₂ at 20^oC when the vapor pressure of water is 17.5torr. The total pressure of the gases is 750torr.

• 767.5torr

• 732torr

• 42.86torr

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

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 volume of a container holding a gas is reduced, what will happen to the pressure within the container?

• Temperature goes up

• Pressure will stay the same

• Pressure goes up

• Pressure goes down