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23 June, 17:24

how much heat energy is needed to raise the temperature of 78.4g of aluminum from 19.4 degrees c to 98.6 degrees c.

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  1. 23 June, 17:40
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    The heat that is needed to raise the temperature of 78.4 g of aluminium from 19.4 °c to 98.6°c is 5600.77 j

    calculation

    Heat (Q) = mass (M) x specific heat capacity (C) x change in temperature (ΔT)

    where;

    Q=?

    M = 78. 4 g

    C=0.902 j/g/c

    ΔT=98.6°c - 19.4°c = 79.2°c

    Q is therefore = 78.4 g x 0.902 j/g/c x 79.2°c = 5600.77 j
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