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12 January, 16:13

Complete combustion of a 0.350 g sample of a compound in a bomb calorimeter releases 14.0 kJ of heat. The bomb calorimeter has a mass of 1.20 kg and a specific heat of 3.55 J / (gi°C). If the initial temperature of the calorimeter is 22.5°C, what is its final temperature?

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  1. 12 January, 19:10
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    The amount of heat released by the compound in a bomb calorimeter is 14.0kJ,

    But heat released by the compound will be equal to the heat gained by the calorimeter.

    Heat energy = mass * specific heat * change in temperature.

    Therefore;

    14000 J = 1200 g * 3.55 * (x-22.5)

    14000 = 4260 (x-22.5)

    x-22.5 = 3.286

    x = 25.786

    ≈ 25.9

    Therefore, the final temperature is 25.8 °c
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