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10 May, 09:28

When a 0.740-g sample of trinitrotoluene (TNT), C7H5N2O6, is burned in a bomb calorimeter, the temperature increases from 23.4 °C to 26.9 °C. The heat capacity of the calorimeter is 534 J/°C, and it contains 675 mL of water. How much heat was produced by the combustion of the TNT sample?

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  1. 10 May, 09:36
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    The answer to your question is: Q = 1383.06 J

    Explanation:

    Data

    mass = 0.740 g

    Initial Temperature = 23.4°

    Final Temperature = 26.9°

    Cp = 534 J/°C

    mass of water = 675 ml

    Q = ?

    Formula

    Q = mCpΔT

    Process

    Q = (0.740) (534) (26.9 - 23.4)

    Q = (0.740) (534) (3.5)

    Q = 1383.06 J
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