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

Question

Quizplus · Accepted Answer

At the same temperature, all gas molecules have the same average kinetic energy. However, because hydrogen molecules are lighter than oxygen molecules, they must move faster to have the same kinetic energy.

Hydrogen and Oxygen Molecules in a Gas Sample Have the Same