Choose the one alternative that best completes the statement or answers the question. -A mole of diatomic oxygen molecules and a mole of diatomic nitrogen molecules are at STP. Which statements

Choose the one alternative that best completes the statement or answers the question.
-A mole of diatomic oxygen molecules and a mole of diatomic nitrogen molecules are at STP. Which statements are true about these molecules? (There could be more than one correct choice.)
A) Both gases have the same average momentum per molecule.
B) Both gases have the same average kinetic energy per molecule.
C) Both gases have the same average molecular speeds.
D) Both gases have the same number of molecules.

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