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Homework Help: Absolute humidity

  1. Feb 13, 2007 #1
    1. The problem statement, all variables and given/known data
    Estimate the mass of water vapor that is contained in [itex]1 m^3[/itex] of saturated air at a temperature of plus 20 degrees Celsius

    2. The attempt at a solution
    I looked up the saturation pressure for water vapor at the given temperature. Can I just use the ideal gas-law for the mass? i.e. is the solution as simple as
    [tex]m_{H_2O} = \frac{P_{sat, H_2O}}{R_{H_2O}T}[/tex]
    or do I have to make another approach?
  2. jcsd
  3. Feb 13, 2007 #2
    yes this looks right, but -as usual- be careful with the units
    Last edited: Feb 13, 2007
  4. Feb 13, 2007 #3
    Can you tell me why the phrasing of the problem is physically incorrect?
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