Unit 8: Partial Pressure and Mole Fractions

A sealed, rigid container contains 3 gases: 28.0g of nitrogen, 40.0g of argon, and 36.0g of water vapor. If the total pressure exerted by the gases is 2.0 atm, what is the partial pressure of the nitrogen?

0.33 atm

0.40 atm

0.50 atm

2.0 atm

An evacuated rigid container is filled with exactly 2.00 g of hydrogen and 10.00g of neon. The temperature of the gases is held at 0 degrees Celsius and the pressure inside the container is a constant 1.0 atm. What is the mole fraction of neon in the container

0.17

0.33

0.67

0.83

A mixture of helium and neon gases has a total pressure of 1.2 atm. If the mixture contains twice as many moles of helium as neon, what is the partial pressure due to neon?

0.2 atm

0.3 atm

0.4 atm

0.8 atm

Nitrogen gas was collected over water at 25 degrees Celsius. If the vapor pressure of water at 25 degrees celsius is 23mmHg, and the total pressure in the container is measured at 781 mmHg, what is the partial pressure of the nitrogen gas?d

44 mmHg

551 mmHg

735 mmHg

758 mmHg

SO2 (5.0 g) and CO2 (5.0 g) are placed in a 750 mL container at 50 degrees Celsius. The partial pressure of SO2 in the container was __________ atm.

1.60

2.76

4.02

0.192

Unit 8: Partial Pressure and Mole Fractions

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