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25 March, 17:32

How many joules of heat are given off when 10 g of water cool from 100 C to 25 C?

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  1. 25 March, 18:41
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    3138 joules

    Explanation:

    Heat flow equation = > q = m·c·ΔT

    m = mass of substance = 10 grams

    c = specific heat = 4.184 j/g·°C

    ΔT = 100°C - 25°C = 75°C

    q = m·c·ΔT = (10g) (4.184 j/g·°C) (75°C) = 3138 joules
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