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27 November, 19:00

What mass of carbon can 3000 J of energy raise from 12°C to 40°C?

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  1. 27 November, 22:16
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    The answer to your question is mass = 0.824 kg or mass = 82.4 g

    Explanation:

    Data

    Mass = m

    Energy = E = 3000 J

    Temperature 1 = T1 = 12°C

    Temperature 2 = T2 = 40°C

    Specific heat of C = 1300 kJ/kg°K

    Process

    1. - Convert temperature to Kelvin

    T1 = 273 + 12 = 285°K

    T2 = 273 + 40 = 313°K

    2. - Substitution

    Energy = m C (T2 - T1)

    - Solve for m

    mass = Energy / C (T2 - T1)

    mass = 3000 / 1300 (313 - 285)

    mass = 3000 / 1300 (28)

    mass = 3000 / 36400

    mass = 0.082 kg

    or mass = 82.4 g
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