Helium atom is two times heavier than a hydrogen molecule. At , the average kinetic energy of helium — States of Matter and Gaseous State Chemistry Question
Question
Helium atom is two times heavier than a hydrogen molecule. At $298\text{ K}$, the average kinetic energy of helium is:
Answer: B
💡 Solution & Explanation
The average translational kinetic energy of any gas molecule is $(3/2)kT$, which depends exclusively on absolute temperature and is completely independent of the molar mass.
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