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Homework Help: Chemistry - Molar Entropy Question

  1. Jan 24, 2009 #1
    Working this thing on Web Assign. I feel like I've been doing everything 100% correct, yet I keep getting the wrong answer.

    http://img510.imageshack.us/img510/4488/chemkp0.jpg [Broken]

    Basically, I need help on part B and C

    What I did for B, I tried to calculate Delta S by using the equation n Cv ln(T2/T1)
    I plugged in Cv given in the problem, used 341 for T2, and 298 for T1. n is One, since its for one mole. And I added the value I get to delta S to S that was given in the problem.

    What have I been doing wrong.
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Jan 25, 2009 #2
    Maybe you should be plugging in [tex]C_p[/tex]. The question says that the pressure is 1 atmosphere, even at the higher temperature. Therefore you must be operating at constant pressure and your volume must have increased.
  4. Jan 26, 2009 #3
    I've tried that multiple times. Thanks, though.
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