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Chemistry Gas problem

  1. Sep 30, 2007 #1
    1. The problem statement, all variables and given/known data


    The apparatus shown consists of three bulbs connected by stopcocks. What is the pressure inside the system when the stopcocks are opened? Assume that the lines connnecting the bulbs have zero volume and that the termperature remains constant.

    [​IMG]

    CO_2 - Pressure : 2.13 atm , Volume = 1.5 L
    H_2 : Pressure = 0.861 atm, Volume = 1.00 L
    Ar : Pressure = 1.15 atm , volume = 2.00 L

    2. Relevant equations

    The equation i used was Daltons partial gas equation

    P1 + p2 + p3 = ptotal

    3. The attempt at a solution

    so i just did 2.13 + 0.861 + 1.15

    But the answer is 1.414 atm.

    i dont' know what to do
     
  2. jcsd
  3. Sep 30, 2007 #2
    that would be too easy of course

    hint: P1V1 = P2V2

    what is V2 or V(total)?
     
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