At Room Temperature,which of the Following Diatomic Molecules Has the Greater

Multiple Choice

At room temperature,which of the following diatomic molecules has the greater average kinetic energy: carbon monoxide (molar mass = 28 g/mol) ,nitrogen (molar mass = 28 g/mol) ,or oxygen (molar mass = 32 g/mol) ?

A) carbon monoxide
B) nitrogen
C) oxygen
D) Both a and b are correct.
E) All three have the same average kinetic energy.