Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a — States of Matter and Gaseous State Chemistry Question
Question
Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is
Answer: B
💡 Solution & Explanation
Average KE per molecule depends strictly on absolute T, not mass. Therefore, correct answer is B.
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