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    Heating a Gas

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    Heat required to raise 1 kg carbon dioxide from -100 degrees C to -50 degrees C.

    I arrived at an answer of 654,657 Joules.

    I used the following: CO2-solid spec heat = 815 J/kgC
    CO2-vapor spec heat = 2 J/kgC
    sublimation point of 573,100 J/kgC
    Q=CmT

    CmT(at -100C) plus sublimation point plus CmT(with temp change of 28.5C)

    or 81,500 J + 573,100 J + 57 J = 654,657 J

    Please let me know if this is correct, and if not, what I need to do to find the correct answer.

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    https://brainmass.com/physics/heat-thermodynamics/heating-gas-79242

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    The sublimation point of carbon dioxide is -78 degrees ...

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    This solution provides a solution for finding heat required to raise 1 kg carbon dioxide from -100 degrees C to -50 degrees C.

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