Gas Laws

A sample of oxygen gas has a volume of 150.0 mL when its pressure is .947 atm. What will the volume of the gas be if it is lowered to a pressure of 0.658 atm and the temperature remains constant?

• 72 mL
• 144 mL
• 216 mL
• 288 mL

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

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 

Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L. 

• 0.029 K
• 0.021 K
• 227.76 K
• 34 K

Determine the number of moles in a container of gas at STP with a volume of 99.2 L. 

• 2222.08 moles
• 4.43 moles
• 22.4 moles 
• 76.8 moles

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

Convert 315.026 mmHg to kPa.

What is the mass of 2L of N₂O₅ gas if the temperature of the sample is 298 K and it exerts a pressure of 100 kPa?

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

100 degrees Celsius is equal to _______ Kelvin. 

• 0 K
• 273 K
• 173 K
• 373 K