A Fixed Container Holds Oxygen and Helium Gases at the Same

Multiple Choice

A fixed container holds oxygen and helium gases at the same temperature. Which of the following statements are correct? (There could be more than one correct choice.)

A) The oxygen molecules have the greater average kinetic energy.
B) The oxygen molecules have the greater speed.
C) The helium molecules have the greater average kinetic energy.
D) The helium molecules have the greater speed.
E) The helium molecules have the same average kinetic as the oxygen molecules.