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Homework Help: Total heat flow question

  1. Sep 26, 2016 #1
    1. The problem statement, all variables and given/known data

    n = 3.8-mol of diatomic gas is allowed to expand isothermally from Vini = 1.9-m3 to Vfin = 10.5-m3. The initial pressure is Pini = 1.38-atm. After this the gas is raised at a constant volume by a temperature ΔT = 35-K. Calculate the total heat flow into the gas.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Sep 26, 2016 #2


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    Please show your attempt at a solution (forum rules).
  4. Sep 27, 2016 #3
    I tried to use the Q=-W formula for isothermal. But I dont know how to find the W. Other than that, I also tried to use the graph and find the integral, but in using the graph some of the information given is not used(temperature)
  5. Sep 27, 2016 #4
    Assuming that the expansion is carried out reversibly, what is your algebraic result for the amount of work that is done?
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