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26 March, 10:12

A gas mixture contained in a cylinder and piston assembly. The gas mixture released 903 kJ in form of heat into its surroundings. The internal energy during this process decreased by 450 kJ. Calculate the work involved during this process.

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  1. 26 March, 10:16
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    453 kJ

    Explanation:

    A gas mixture is contained in a cylinder and piston assembly.

    The gas mixture released 903 kJ in form of heat into its surroundings, that is, q = - 903 kJ.

    The internal energy during this process decreased by 450 kJ, that is, ΔU = - 450 kJ.

    We know that,

    ΔU = q + w

    w = ΔU - q = - 450 kJ - ( - 903 kJ) = 453 kJ

    The gas is compressed, that is, work is done by the surroundings on the gas, and the work involved is 453 kJ.
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