At what temperature will the total Kinetic Energy of of be the same as the total Kinetic Energy of o — States of Matter and Gaseous State Chemistry Question
Question
At what temperature will the total Kinetic Energy of $0.3\text{ mol}$ of $He$ be the same as the total Kinetic Energy of $0.40\text{ mol}$ of $Ar$ at $400\text{ K}$?
Answer: A
💡 Solution & Explanation
Total $KE = (3/2)nRT$. Equating them: $0.3 \times T = 0.4 \times 400 \implies 0.3T = 160 \implies T = 160 / 0.3 = 533.3\text{ K}$.
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