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Cylinder A contains $0.6\text{ mole}$ of ${O}_{2}$ atoms at room temperature. Cylinder B contains $1.4\text{ moles}$ of ${H}_{2}$ atoms at room temperature. Both cylinders have an absolute pressure that is higher than atmospheric pressure. The cylinders are opened up in a room and the molecules are allowed to mix together.

Which of the following statements are true concerning the rms speed of the molecules in this experiment?

Select TWO answers.

A

The ${O}_{2}$ molecules have a slower rms speed after mixing in the room than they had in Container A.

B

When both gases are in their containers, the ${H}_{2}$ molecules have a faster rms speed than the ${O}_{2}$ molecules.

C

The rms speed of the molecules does not change after the containers are opened and the molecules are allowed to mix together.

D

In the mixing process, the ${O}_{2}$ molecules will give kinetic energy to the ${O}_{2}$ molecules as they collide together.

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