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Floating and Sinking

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Question

Let the pressure P and volume V for a certain gas. If the pressure is increased by 25% at a constant temperature, then what would be the volume of the gas?

A

0.85V

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B

0.6V

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C

0.8V

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D

0.75V

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Solution

The correct option is C 0.8V
According to Boyle's law:
$P_{1} V_{1} = P_{2} V_{2} P V = 1.25 P \times V_{2} V_{2} = 0.8 V$

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