1. Tardigrade
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  3. Chemistry
  4. Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is

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

Solution:

The average kinetic energy of an atom is given as $\frac{3}{2} kT$
It does not depend on mass of the atom.