A Mole of Diatomic Oxygen Molecules and a Mole of Diatomic

Multiple Choice

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 molecular speeds.
B) Both gases have the same number of molecules.
C) Both gases have the same average kinetic energy per molecule.
D) Both gases have the same average momentum per molecule.