Gas Laws Test Review

Charles' Law: A sample of nitrogen occupies a volume of 250 mL at 25 °C. What volume will it occupy at 95 °C. Round to the nearest whole number.

• 203 mL

• 309 mL

• 204 mL

• 308 mL

Determine the pressure change when a constant volume of gas at 1.00 atm is heated from 20 °C to 30 °C. Round to two decimal places.

• 1.03 atm

• 1.10 atm

• 1.02 atm

• 1.04 atm

Boyles Law: If a gas at 25.0 °C occupies 3.60 L at a pressure of 1.00 atm. What will be its volume at a pressure of 2.50 atm? Round to two decimal places.

• 1.44 L

• 9.00 L

• 1.45 L

• 9.44 L

Air contains O2, N2, CO2, & trace amounts of other gases. What is the total pressure in an automobile tire that is filled with air if the partial pressures of O2 51.3 kPa, N2 191.3 kPa, CO2 0.10 kPa, and other gases at a pressure 2.3 kPa. Round to one decimal place.

• 245.0 kPa

• 247.7 kPa

• 248.3 kPa

• 246.0 kPa

A gas is collected at 22.0 °C and 745.0 mm Hg. When the temperature is changed to 0 °C, what is the resulting pressure. Round to one decimal place.

• 695.3 mm Hg

• 690.0 mm Hg

• 689.4 mm Hg

• 688.5 mm Hg

Fluorine gas at 300 K occupies a volume of 500 mL. To what temperature should it be lowered to bring the volume to 300 mL? Round to the nearest whole number.

• 180 K

• 500 K

• 90 K

• 450 K

A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures of the three gases in the tank are 35 atm of O2, 5 atm of N2, and 25 atm of He, what is the total pressure inside of the tank? Round to nearest whole number.

• 55 atm

• 60 atm

• 65 atm

• 70 atm

A 40.0 L tank of ammonia has a pressure of 12.7 kPa. Calculate the volume of the ammonia if its pressure is changed to 8.4 kPa. Round to one decimal place.

• 26.5 L

• 50.2 L

• 60.5 L

• 76.2 L

According to Boyle's Law, as the pressure of a gas increases…

• The volume of the gas will increase

• The volume of the gas will decrease

• The temperature of the gas will decrease

• The number of particles of gas will decrease

When a person inhales, the volume of their lungs increases. According to Boyle's Law, what else will happen to the lungs?

• The temperature inside the lungs will decrease

• The pressure inside the lungs will increase

• The pressure inside the lungs will decrease

• The particles inside the lungs will decrease