Gas Law and Moles

Determine the Celsius temperature of 2.49 moles of gas contained in a 1.00-L vessel at a pressure of 143 kPa. 

• -266 degrees C
• -622 degrees C
• 622 degrees C 
• 266 degrees C

In the ideal gas law, which variable represents the gas constant?

• n
• R
• T
• V

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

What about gasses can be measured?

• Pressure and Volume
• Temperature, Volume, and Pressure
• Volume and Temperature
• Pressure, Temperature, Volume, and Moles

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

In order to solve gas law calculations, temperature must be measured in:

• Fahrenheit
• Celsius
• Kelvin
• It doesn't matter 

As number of moles goes up, volume 

• goes down.
• goes up.
• stays the same

At STP, what is pressure in atmospheres?

• 1 atm
• 10 atm
• 0 atm
• 100 atm

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