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31 July, 16:31

How many joules are produced when 45 gram of copper is placed into water that releases them temperature from 12c to 71c (c) = 0.75j/g*c

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  1. 31 July, 18:09
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    Heat energy (Q) = 1.9925 KJ = 2 KJ (Approx)

    Explanation:

    Given:

    Mass of copper (M) = 45 gram

    Change in temperature (ΔT) = 71°C - 12°C = 59°C

    Specific heat (c) = 0.75 j / g*c

    Find:

    Heat energy (Q) = ?

    Computation:

    Heat energy (Q) = Mass (M) * Change in temperature (ΔT) * Specific heat (c)

    Heat energy (Q) = 45 gram * 59°C * 0.75 j / g*c

    Heat energy (Q) = 1991.25 J

    Heat energy (Q) = 1.9925 KJ = 2 KJ (Approx)
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