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7 June, 06:44

How much energy is needed to raise the temperature of a 55g sample of aluminum from 22.4 to 94.6?

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  1. 7 June, 08:49
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    The heat needed is given by Mcθ, where m is the mass in Kg, c is the heat capacity of aluminium, and θ is the change in temperature.

    Specific heat capacity of aluminium is 0.9 j/g°c

    thus; Heat = 55 * 0.9 * 72.2

    = 3573.9 Joules or 3.574 kJ
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