Question

If the number of molecules of h2 are double than that of o2, then ratio of kinetic energy of hydrogen and that of oxygen at 300 k is

Answer 1

So, at the same temperataure, hydrogen molecules must travel much faster in order to have the same kinetic energy, on average, per molecule. Higher speed of the molecules means it can transmit pressure waves that much more quickly. Oxygen is 16 times more dense than hydrogen.