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Homework Help: Thermodynamic Problems: Work and Heat in a Thermodynamic Process

  1. Dec 2, 2007 #1
    1. The problem statement, all variables and given/known data
    Initially, 0.745 moles of an ideal gas in a container occupies a volume of 3.55 L at a pressure of 3.82 atm with an internal energy of 1705 J. The gas is then cooled at a constant volume until its pressure is 2.06 atm. Then the gas is allowed to expand at a constant pressure until its volume is 6.65 L. The final internal energy is 2098 J. Consider the processes to be quasi-static. What is the work associated with this entire process?
    2. Relevant equations
    W=-P*deltaV
    deltaU=Q + W

    3. The attempt at a solution
    Is it correct that you take the 2.06, multiply it by 1E5, and multiply the answer by the change in volume in m^3 to find -638.60 J
     
  2. jcsd
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