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Homework Help: What is the formula of the hydrate?

  1. Sep 30, 2008 #1
    1. The problem statement, all variables and given/known data
    A hydrate has the following percent composition: Pb=54.61%, C=12.66%, H=1.61%, O=16.88% and H2O=14.24%. What is the formula of the hydrate?

    2. Relevant equations

    3. The attempt at a solution

    i was told to divide the percentages by the total molecular mass... makes no sense, they are looking for the hydrate formula and don't know how to do this
  2. jcsd
  3. Oct 1, 2008 #2


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    Staff: Mentor

    Try to solve assuming it it just the elemental analysis with an "element" X of molar mass 18.02 and constituting 14.24% of the substance.
  4. Oct 4, 2008 #3
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