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Ideal gas container problem

  1. Sep 12, 2013 #1
    1. The problem statement, all variables and given/known data
    A container of gas at 3.90atm pressure and 136 ∘C is compressed at constant temperature until the volume is halved. It is then further compressed at constant pressure until the volume is halved again.
    What is the final temperature of the gas?

    2. Relevant equations
    PV=nRT


    3. The attempt at a solution
    seems like a very easy question, but I'm doing Mastering Physics and it is saying I am wrong.
    the volume is being halved and the pressure remains constant, so shouldn't the temperature just be halved also?
    I got 68 degrees celsius as my answer, but Mastering Physics says it is wrong and I should check my signs but that shouldn't be an issue.
     
  2. jcsd
  3. Sep 12, 2013 #2

    collinsmark

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    Homework Helper
    Gold Member

    Don't forget to convert the temperature to an absolute scale (such as Kelvin) before you start the calculations. Then remember to convert it back to deg C when you're finished. :wink:
     
  4. Sep 12, 2013 #3
    thanks collinsmark! totally forgot about that :p
     
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