Gas Laws ll

A sample of oxygen gas occupies a volume of 436.2 mL at 1.02 atm. If the temperature is held constant, what would the pressure of this gas be when the gas is compressed to 231.6 mL?

• 3.23 atm

• 194 kPa

• 1.92 atm

• 423 torr

A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.00 C. By noon the temperature has risen to 45.00 C. What is the new volume of the balloon?

• 68 L

• 87 L

• 17 L

• 38 L

CaCO3 decomposes at 1200 C to form CO2 gas and CaO. If 25 L of CO2 are collected at 1200 C, what will the volume of this gas be after it cools to 25 C?

• 10.4 L

• 5.1 L

• 1.7 L

• 0,11 L

The initial volume of a gas at a pressure of 3.2 atm is 2.9 L. What will the volume be if the pressure is increased to 4.0 atm?

• 2.3 L

• 8.9 L

• 5.8 L

• 6.3 L

Convert the pressure 1.30 atm to kPa.

• 18 kPa

• 414 kPa

• 725 kPa

• 132 kPa

A pressure of 1.00 atm is the same as a pressure of __________ of mm Hg.

• 101.3

• 760

• 1

• 22.4

A pressure of 745 mm Hg equals

• 745 torr

• 68 kPa

• 1.7 atm

• 16.9 psi

On a cold winter morning when the temperature is –13ºC, the air pressure in an automobile tire is 1.5 atm. If the volume does not change, what is the pressure after the tire has warmed to 15ºC?

• 2.2 atm

• -5.6 atm

• 1.7 atm

• 3.7 atm