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3 January, 06:26

The specific heat of a certain type of cooking oil is 1.75 J / (g⋅°C).1.75 J / (g⋅°C). How much heat energy is needed to raise the temperature of 2.34 kg2.34 kg of this oil from 23 °C23 °C to 191 °C?191 °C?

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  1. 3 January, 08:43
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    Heat energy required = 687.96 kJ

    Explanation:

    Heat energy required, H = mCΔT.

    Mass of cooking oil, m = 2.34 kg = 2340 g

    Specific heat of cooking oil, C = 1.75 J / (g⋅°C)

    Initial temperature = 23 °C

    Final temperature = 191 °C

    Change in temperature, ΔT = 191 - 23 = 168 °C

    Substituting values

    H = mCΔT

    H = 2340 x 1.75 x 168 = 687960 J = 687.96 kJ

    Heat energy required = 687.96 kJ
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