General Knowledge History Objective
Apr 02, 2013

A sealed, rigid container is filled with three ideal gases: A, B, and C. The partial pressure of each gas is known. The temperature and volume of the system are known. What additional information is needed to determine the masses of the gases in the container?

Choose the correct answer:
A) the average distance traveled between molecular collisions
B) the intermolecular forces
C) the volume of the gas molecules
D) the total pressure
Detailed Explanation

This problem depends on the ideal gas equation: PV = nRT. R, V, and T are known, and by using the partial pressure for a gas, the number of moles of that gas may be determined. To convert from moles to mass, the molar mass of the gas is needed.

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