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Homework Help: Internal combustion engine problem.

  1. Feb 22, 2008 #1
    An internal combustion engine runs on octane, the enthalpy of combustion is -5512 kJ/mol. The mass of 1 gallon of fuel is 3 kg.
    The engine temperature is 2000 degrees C and the exit temperature is 800 degrees C. What is the work done?

    The total enthalpy is -145053 kJ. The total number of moles of octane is 26.3. The molar mass of octane is .1142 kg/mol

    I spent a good deal of time on this, and I am not sure how to conceptualize this problem.

    *I edited the problem so you don't have to read the poorly written original problem. *
    Last edited: Feb 22, 2008
  2. jcsd
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