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24 January, 07:07

The SHC of water is 4200j/kg°how much energy will it take to raise 1kg of water from 20°c to 100°c?

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  1. 24 January, 08:46
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    Q = 336000 j

    Explanation:

    Specific heat capacity:

    It is the amount of heat required to raise the temperature of one gram of substance by one degree.

    Formula:

    Q = m. c. ΔT

    Q = amount of heat absorbed or released

    m = mass of given substance

    c = specific heat capacity of substance

    ΔT = change in temperature

    Given dа ta:

    Specific heat capacity = 4200 j/Kg °C

    Mass of water = 1 Kg

    Initial temperature = 20°C

    Final temperature = 100°C

    Heat required = ?

    Solution:

    ΔT = T2 - T1

    ΔT = 100°C - 20°C

    ΔT = 80 °C

    Q = m. c. ΔT

    Q = 1 kg * 4200 j/Kg °C * 80 °C

    Q = 336000 j
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