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Homework Help: Small question about molar concentrations.

  1. Nov 2, 2006 #1
    Hello, on one of my thermo problems, it says, "a molar concentration of .5 parts per million." what does this mean? .5 moles in a million?
     
  2. jcsd
  3. Nov 3, 2006 #2

    berkeman

    User Avatar

    Staff: Mentor

    No. 0.5 ppm concentration.
     
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