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A helium sample has volume 2 L at 240 K. At fixed pressure, what is its volume at 360 K?

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A) 1 L

B) 4 L

C) 2 L

D) 3 L

Answer: D

Explanation: Charles’s law states that V/T remains constant at fixed pressure and amount. Absolute temperature is multiplied by 1.5, so volume becomes 3 L.

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