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9 December, 19:22

Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C. heat = Kcal

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  1. 9 December, 22:23
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    18.4 kcal

    Explanation:

    ΔQ = m c Δ t

    where ΔQ is heat energy supplied in kcal, m is mass in kg, c is specific heat capacity which is 0.092 kcal / (kg C°), Δ t = 110-10 = 100C°

    ΔQ = 2*0.092*100 = 18.4 kcal
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