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Thermodynamics - Kinetic energy in a compound

  1. Sep 18, 2011 #1
    1. The problem statement, all variables and given/known data

    In a compound made up of 35% nitrogen, 60% oxygen and 5% water vapor, which of the components has the most kinetic energy in Joules? Assume room temperature (300K) and atmospheric pressure. Volume of room is 1000m^3

    2. Relevant equations

    vrms = root(3kT/m)
    PV = NkT

    3. The attempt at a solution

    My idea was to take just 1 moles worth of the compound and add 35% more to that number (for nitrogen, for example), but this doesn't seem correct. I'm not sure how to incorporate the percentages in with the kinetic energy of the compound. I'm not much of a chemist so this could be my problem. Any hints or tips would be very helpful. Thanks
  2. jcsd
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