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17 April, 12:08

The volume of a sample of hydrogen gas was decreased from 11.63 L to 4.92 L at constant temperature. If the final pressure exerted by the hydrogen gas sample was 7.20 atm, what pressure did the hydrogen gas exert before its volume was decreased

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  1. 17 April, 12:31
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    3.05 atm

    Explanation:

    According to Boyle's law, the pressure exerted by a gas at constant temperature is inversely proportional to the volume of the gas.

    Mathematically, the law can be expressed as:

    P1V1 = P2V2

    In this case, P1 = ?, V1 = 11.63 L, P2 = 7.20, V2 = 4.92 L

    P1 = P2V2/V1

    = 7.20 x 4.92/11.63

    = 3.05 atm

    The pressure the hydrogen gas exerted before its volume decreased is 3.05 atm.
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