Gas Laws

A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?

• 2.1 L

• 5.0 L

• 8.2 L

• 3.9 L

A scientist needs to store 28.0 moles of xenon gas at STP in the lab. What size gas tank will he need?

• 628 L

• 473 L

• 219 L

• 376 L

A sample of gas containing 8.1 moles at STP would fill a container of what volume?

• 342 L

• 703 L

• 475 L

• 182 L

A water bottle at STP is cooled to -155°C. What is the new pressure?

• 3.2 atm

• 0.43 atm

• 1.8 atm

• 0.27 atm

A student inflates a balloon with helium then places it in the freezer. The student should expect

• the balloon's volume to increase

• the balloon's volume to decrease

• the balloon's moles to increase

• the balloon's moles to decrease

The pressure of a 6.5 L sample of oxygen gas is measured to be 3.8 atm. If the gas is transferred into a 12 L tank, what is the new pressure?

• 6.6 atm

• 3.9 atm

• 4.5 atm

• 2.1 atm

A student transfers a gas at STP from a 11.0 L tank to a 25.0 L tank. If the pressure remains constant, what is the new temperature?

• 120 K

• 393 K

• 254 K

• 530 K

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?

• 0.9 atm

• 2.1 atm

• 1.6 atm

• 3.4 atm

A sample of gas containing 9.2 moles is transferred from an 13 L tank to a 23 L tank. What is the new number of moles that can be stored in the tank?

• 10.2 mol

• 13.7 mol

• 19.1 mol

• 16.3 mol

Three gases are mixed together in a container with a total pressure of 4.8 atm. If two of the gases have pressures of 1.2 atm and 1.5 atm, what is the pressure of the third gas?

• 2.5 atm

• 1.8 atm

• 2.1 atm

• 1.3 atm