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15 June, 13:52

How many joules of heat energy are released when 50.0g of water are cooled from 70.0C to 60.0C

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  1. 15 June, 15:53
    0
    2090 Joules

    Explanation:

    Heat energy is calculated by multiplying the mass of a substance by its specific heat capacity and by change in temperature.

    That is;

    Quantity of heat = Mass * specific heat capacity * change in temperature

    Q = m*c * ΔT

    In this case; we need to calculate the heat energy released by water

    Mass of water = 50.0 g

    Specific heat capacity of water = 4.18 J/g°C

    Change in temperature = 10 °C (70°C - 60°C)

    therefore;

    Heat released = 50 g * 4.18 J/g°C * 10 °C

    = 2090 Joules

    Thus, the heat energy released when 50 g of water is cooled from 70°C to 60°C is 2090 Joules
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