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Change of entropy

  1. Sep 17, 2009 #1
    I would like to find change of entropy of composite of two ideal gases which have sane tenperature and preasure and different volumes [tex]V_1[/tex] and [tex]V_2[/tex].

    I think about this and I have idea but I'm not sure am I right?

    Equation of state of ideal gas is


    And we have




    First term is equal to zero!


    I think now that change of entropy is


    This is change of entropy! Am I right?

    Can I use that

    [tex]V=V_1+V_2[/tex] ?
  2. jcsd
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