Ideal Gas Law and Combined Gas Law Practice

If the pressure exerted by a gas at 25 ^oC 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

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

What is the pressure in atmospheres of a 0.108-mol sample of helium gas at a temperature of 20.0 ^oC if its volume is 0.505 L?

• 90.7 atm

• 22.4 atm

• 29.3 atm

• 5.14 atm

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 

What is the temperature of natural gas in an oil pipeline if we know there are 0.91 moles of the gas in the pipeline and the volume of the pipeline is 5.43 L and the gas is exerting a pressure of 4.21 atm?

• 306 °C

• 225 K

• 306 K

• 712K

When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the

• air molecules hit the walls of the tire less frequently
• rubber in the tires reacts with oxygen in the atmosphere
• air molecules speed up and collide with the tire walls more often
• air molecules diffuse rapidly through the walls of the tire.

Tags

NGSS.HS-PS3-2

Higher pressure means ______________ collisions between gas particles and the walls of their container.

• more
• less
• faster
• harder

What is the approximate volume of a 0.600 mole sample of gas at 15°C and a pressure of 1.10atm?

• 12.9 L
• 22.4 L
• 24.6 L
• 129 L

A gas is heated from 263K to 298K. The volume is increased from 24.0L to 35.0L. If the original pressure was 1.00 atm, what is the new pressure?

• 0.78 atm

• 1.65 atm

• 1.28 atm

• 0.61 atm

A gas at a volume of 4 liters is at a pressure of 8 Pa. The volume is changed to 16 Liters, what must the new pressure be?

• 1 Pa
• 12 Pa
• 10 Pa
• 2 Pa