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Conversion approach ?

  1. May 19, 2005 #1
    I need to convert mol/cm3 into ppmv

    how would i go about that if i know pressure and temperature ?

    any leads ?
     
  2. jcsd
  3. May 19, 2005 #2

    dextercioby

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    What's "ppmv"? I have a hunch it comes from "parts per million",bt what does "v" stand for ?

    1 mol/cm^3 is the cgs unit for concentration.

    Daniel.
     
  4. May 19, 2005 #3
    parts per milion per volume , you just multiply ppm by 1.0e6
     
  5. May 19, 2005 #4

    pervect

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  6. May 19, 2005 #5
    I think i can work with that. Thanx a much
     
  7. May 19, 2005 #6

    dextercioby

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    I hope u realize you can't make that conversion

    dim (mol/cm^3)= S V^{-1}

    dim (ppmv)=V^{-1}

    Daniel.
     
  8. May 20, 2005 #7
    yeah i had to convert everything into SI units.

    ppmv=[(Gas rho) /(air rho) ] * 1.0e6

    Gas rho = P/(kT) from P=nkT

    thanx very much guys
     
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