Gas Laws 2 DOL

A container is filled with H₂, and H₂O. What is the partial pressure of H₂ when the pressure of water is 17 kPa. The total pressure of the gases is 750 kPa.

• 767 kPa

• 733 kPa

• 740 kPa

• 633 kPa

When 0.250 moles of a gas is placed in a container at 25 °C, it exerts a pressure of 700 mm Hg. What is the volume of the container?

• 0.557 Liters

• 6.57 Liters

• 8.74 Liters

• 0.0087 Liters

A scientist records 8 moles of gas. The scientist does not check the pressure of this gas. At t later time the scientist measures the volume of gas to be 150 ml and the new number of moles of gas to be 48 what was the orginal volume of the gas

• 25 ml

• 0.39 ml

• 2.56 ml

• 2.5 ml

A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?

• 234 mmHg
• 1.37 mmHg
• 2.64 mmHg
• 1, 494 mmHg

A 1.25 L volume of gas contains 4.5 moles. How many moles will be in 0.75 L if temperature and pressure remain constant?

• 2.67 moles

• 4.80 moles

• 2.08 moles

• 2.70 moles

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 °K

• 579.4 °K

• 33.4 °K

• - 19.3 °K

A balloon of Argon gas has a volume of 150. mL when its pressure is 0.647 atm. What will the pressure of the gas be at a volume of 98.3 mL if the temperature remains constant?

• 0.987 atm
• 1.53 atm
• 2.36 atm
• 97.1 atm

How many moles of oxygen must be placed in a 10.00 liter container in order to exert a pressure of 1500 kPa at 298K?

• 2.47 moles

• 6.06 moles

• 1.50 moles

• 1.65 moles

A sample of hydrogen at 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its original volume?

• 245 ml

• 345 ml

• 123 ml

• 250.mL

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