Question

Helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is.

• A. Two times that of a hydrogen molecule
• B. Same as that of a hydrogen molecule
• C. Four times that of a hydrogen molecule
• D. Half that of a hydrogen molecule

Answer 1

Answer: (B)

Same as that of a hydrogen molecule

Answer 2

$3$ so energies will be same for

$3$at same temperature.