Q. A helium atoms is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is
A) Two times that of a hydrogen molecule
B) Four times that of a hydrogen molecule
C) Half that of a hydrogen molecule
D) Same as that of a hydrogen molecule
Explanation
(d)
Kinetic energy $\left( = \frac{3}{2}RT \right)$ does not depends upon the atomic mass of the gases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.