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Homework Help: Isobaric expansion

  1. Mar 13, 2006 #1
    I have a Pressure vs Volume Graph and A -> B.
    It's just an isobaric expansion, the work done by the gas is -3600 J.
    The gas is monatomic ideal (2.0moles).
    If I used it correctly, PV=nRT, I found the change in temperature to be 216.6K.

    My question is: How do I find the change in internal energy and heat? I don't have any info about the gas except that it's ideal and 2.0 moles worth.
  2. jcsd
  3. Mar 13, 2006 #2

    Chi Meson

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    Use the equation for the amount of heat required to change the temperature of that gas (at constant pressure). You will have W and Q, then find delta U using the First Law.
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