Three spheres having the same volume are filled with gases at the same temperature and pressure. The gas in sphere A is pure hydrogen, the gas in sphere B is pure carbon monoxide, but the gas in sphere C is a mixture of hydrogen and carbon monoxide. Based on the gas laws and molecular formulas, all three spheres contain the same number of atoms.

Question

Quizplus · Accepted Answer

The number of atoms in a gas is directly proportional to the volume of the gas at constant temperature and pressure. Since the three spheres have the same volume and are at the same temperature and pressure, they must contain the same number of atoms.

Three Spheres Having the Same Volume Are Filled with Gases