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23 August, 11:10

Given 16.2 grams of substance Y, if the substance absorbs 2722 joules of energy and the specific heat of the substance is 9.22 J/g·°C, what is the final temperature of the substance if the initial was 26 degrees Celsius?

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  1. 23 August, 11:20
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    Since the substance absorbs heat, it is expected that the temperature will rise. The formula for the internal energy of a substance is given by the equation:

    ΔU = mCpΔT

    where:

    ΔU = internal energy

    m = mass of substance

    Cp = specific heat capacity of substance

    ΔT = change in temperature

    ΔU = 2722 Joules = 16.2 grams (9.22 J/g-°C) (Tf - 26°C)

    This gives a final temperature of Tf = 44.22 °C
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