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Homework Help: PV=nRT - gas laws

  1. May 28, 2010 #1
    1. The problem statement, all variables and given/known data
    8. A cylinder 1.00 m tall with an inside diameter of 0.120 m is used to hold propane gas (molar mass: 44.1 g.mol-1) for use in a barbeque. It is initially filled with a gas until the gauge pressure is 1.30 x 107 Pa and the temperature is 22.0⁰C. The temperature of the gas remains constant as it is partially emptied out of the tank, until the gauge pressure is 2.50 x 105 Pa. Calculate the mass of propane that has been used.


    2. Relevant equations
    Pv=nRT


    3. The attempt at a solution
    Found the mass of the used propane to be 2592grams... Can someone please take a look and see if this is right...... thanks
     
  2. jcsd
  3. May 29, 2010 #2

    Mapes

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    Looks good to me.
     
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