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thermodynamics?

when the temperature of 0.0788 moles of a diatomic gas drops, its internal energy drops by -50.7 J. What was the temperature change?

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  • NCS
    Lv 7
    8 months ago
    Favorite Answer

    ΔE = n * Cv * ΔT

    You have n and ΔE.

    For a diatomic gas, Cv = (5/2)R

    and R = 8.314 J/mol·K

    So you can compute the temperature change in K (which is the same as the temperature change in ºC, since for CHANGES, 1 K = 1 ºC).

    I get ΔT = -31.0 ºC

    Hope this helps!

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