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STP question

  1. Oct 16, 2008 #1
    1. The problem statement, all variables and given/known data

    At STP, 2.75 L of a gas weighed 5.39 g. The gas could be

    a) N2
    b) N2O
    c) NO
    d) F2
    e) NF3

    2. Relevant equations

    I was thinking PV=nRT but it might not be.

    3. The attempt at a solution

    Nothing really.

  2. jcsd
  3. Oct 17, 2008 #2


    User Avatar

    Staff: Mentor

    That's the right one, although not sufficient one.

    Get back once you try.
  4. Oct 17, 2008 #3

    Do I need to use the fact that 1mol = 22.4L at STP?
  5. Oct 18, 2008 #4


    User Avatar

    Staff: Mentor

    You may, although that's equivalent of using PV=nRT and entering standard TP (whatever that means).
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