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30 August, 09:23

If 175 grams of liquid water is heated from 15 degrees C to 35 degrees C, how much energy is absorbed?

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  1. 30 August, 13:01
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    14,700 joules

    Explanation:

    We are given;

    Mass of water as 175 g Initial temperature of water as 15°C Final temperature of water as 35°C

    We are required to determine the amount of energy absorbed

    We need to know that;

    Heat energy absorbed is given by the formula;

    Heat = Mass * change in temperature * Specific heat

    In this case;

    Change in temperature = 35°C - 15°C

    = 20 °C

    Specific heat of water is 4.2 J/g°C

    Therefore;

    Heat = 175 g * 20°C * 4.2 J/g°C

    = 14,700 joules

    Therefore, the amount of heat absorbed is 14,700 joules
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