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8 August, 00:25

The specific heat capacity of solid copper metal is 0.385 J/gK. How many joules of heat are needed to raise the temperature of a 1.55-kg block of copper from 33.0°C to 77.5°C? The specific heat capacity of solid copper metal is 0.385 J/gK. How many joules of heat are needed to raise the temperature of a 1.55-kg block of copper from 33.0°C to 77.5°C? 5.58 * 10-6 J 1.79 * 105 J 0.00558 J 2.66 * 104 J 26.6 J

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  1. 8 August, 02:51
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    Answer: 26.6 J

    Explanation:

    The heat needed to raise the temperature of a solid body, using only a conductive process, has been empirically showed to be equal to the following expression:

    Q = c. m. (t2 - t1)

    where c = specific heat capacity (in J/gK), m = mass of the solid (in g),

    and (t2 - t1) = difference between final and initial temperatures.

    Replacing by the values, we get:

    Q = 0.385 J/gK. 1,550 g. (77.5ºC - 33.0ºC) = 26.6 J
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