Hydrogen and oxygen molecules in a gas sample have the same temperature. This means the hydrogen molecules, on the average, have the same
A) kinetic energy, but more speed.
B) speed, but more kinetic energy.
C) speed, but less kinetic energy.
D) speed and the same kinetic energy.
E) kinetic energy, but less speed.

Question

Quizplus · Accepted Answer

At the same temperature, all molecules, regardless of their mass, have the same average kinetic energy. However, because hydrogen molecules are lighter than oxygen molecules, they will have a higher average speed to maintain the same kinetic energy.

Hydrogen and Oxygen Molecules in a Gas Sample Have the Same