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A nitrogen sample has volume 5 L at 300 K. At fixed pressure, what is its volume at 450 K?

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A) 7.5 L

B) 2.5 L

C) 10 L

D) 5 L

Answer: A

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 7.5 L.

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