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Percent Composition

  1. Dec 24, 2010 #1
    1. The problem statement, all variables and given/known data

    What is the percentage of carbon in dimethylsulfoxide, C2 H6 SO4?

    2. Relevant equations

    mass of C / total mass x 100 = percentage of carbon

    3. The attempt at a solution

    The total mass = 126

    total mass of C = 24

    Wouldn't it be 24 / 126 x 100 = 19 %

    But somehow I got this wrong, it's 30.7 %

    Any help will be appreciated, thanks a lot
     
  2. jcsd
  3. Dec 24, 2010 #2
    Are you sure of your formula for dimethyl sulfoxide?
     
  4. Dec 24, 2010 #3
    Yes, but I think somehow it's the formula that's wrong.
     
  5. Dec 24, 2010 #4
  6. Dec 24, 2010 #5
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