Feb '11
24
MCAT Question of the Day | MCAT Course


  • Q:

    At 200 K, Substance X is in the liquid phase. Substance X vaporizes at 400 K and has a heat of vaporization of 49.1 kJ/kg. The heat capacity of Substance X is 640 J/kg*°C. What energy input is required to fully vaporize 1 g of Substance X if its initial temperature is 200 K?

     

    A

    49.1 J

    B

    128 J

    C

    177.1 J

    D

    49.23 kJ




    Tags: Thermochemistry | Quantitative Skills | Suggest a tag
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