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Gases Kinetic Energy of Gases

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At what temperature will the total kinetic energy of 0.3 mol He equal that of 0.4 mol Ar at 400 K?

Verified Answer & Explanation⌄

Correct Answer: D) 533 K

Concept Explanation

Total translational kinetic energy: KE = 3/2 nRT Therefore: 0.3T = 0.4 × 400 T = 160/0.3 ≈ 533 K.

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