Unit 9 Gas Law Quiz

According to Charles's Law, if the temperature of a container of gas increases, what happens to the volume of the gas?

• Volume depends on type of gas.

• Volume does not change.

• Volume decreases.

• Volume increases.

According to Gay-Lussac's Law, what happens to the pressure of a gas if the temperature decreases?

• Pressure does not change.

• Pressure increases.

• Pressure decreases.

• Pressure cannot be predicted.

A sample of gas contains He, H₂, and O₂. Their partial pressures are as given: PHe=2.5 atm, PH₂=3.5 atm, PO₂=1.5 atm. What is the total pressure?

• 15.0 atm

• 7.5 atm

• 8.5 atm

• 10.5 atm

What is the volume of 3.0 moles of gas at 1 atm and 273 K?

• 0.66 L

• 67.2 L

• 84.0 L

• 504 L

A balloon filled with He has a volume of 25.0 L, pressure of 130 kPa, and temperature of 300 K. What will the new volume if the temperature increases to 470 K and the pressure increases to 160 kPa?

• 31.8 L

• 300 L

• 18.0 L

• 2.50 L

A sample of gas has a volume of 20.0 L and a pressure of 300 kPa. What is the new volume when pressure is increased to 900 kPa?

• 6,000 L

• 10.0 L

• 66.7 L

• 6.67 L

Which of the following units can be used to describe temperature?

• All of the Above

• Celsius

• Kelvin

• Fahrenheit

A mixture of gas contains He, O₂, and CO₂. If the total pressure is 120.0 kPa, what is the partial pressure of O₂ if PHe=90.0 kPa and PCO2=0.05 kPa?

• 101.0 kPa

• 29.95 kPa

• 90.05 kPa

• 210.0 kPa

If an inflated balloon at room temperature is placed in a freezer, the balloon will most likely _________.

• increase in size

• remain the same size

• decrease in size

• pop

Tags

NGSS.HS-PS3-4

What is the volume of 3.00 moles of N₂ gas at STP?

• 67.2 L

• 33.6 L

• 16.8 L

• 50.4 L