Gas Laws

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm (make sure you use the correct R value).

• 7.18 L 
• 7.81 L
• 4.63 L
• 4.36 L

You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?

• 5 L
• 20 L
• It would stay at 10L
• 1 L

A sample of gas with a volume of 30.0 mL at 25.0^oC is heated to 50.0^oC.  What is the new volume of the gas?

• 60.0 mL
• 15.0 mL
• 27.5 mL
• 32.5 mL

A sample of gas was collected in a 2.5 L bulb at 295K and 99kPa. What volume would the gas occupy at 273 K and 101 kPa?

• 2.3 L

• 2.6 L

• 2.75 L

• 0.44 L

Answer the question below:

A rigid plastic container ( size does not change) holds 1.00L methane gas at 0.9 atm pressure when the temperature is 22.0°C. What is the new pressure if the temperature is raised to 44.6°C?

• 0.97 atm

• 1.82 atm

• .83 atm

• 3 atm

According to Charles Law, when the temperature of a gas is decreased _________.

• The pressure increases. 
• The volume increases. 
• The pressure decreases.
• The volume decreases. 

How are temperature and volume related?

• Directly

• Indirectly

• They aren't related

How are pressure and volume related?

• Directly
• Indirectly
• They aren't related

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

What is STP?

• 0 C and 2.00 atm
• 0 K and 2.00 atm
• 273 K and 1.00 atm
• 0 C and 720 torr