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Homework Help: Determining certain mass of a Hydrate

  1. Mar 14, 2008 #1
    5.82g of a Hydrate is taken. If 62.9% of H2O is contained in the Hydrate what is the mass of the anhydrous salt?

    so far i got 62.9% and 37.1% and i was thinking about getting H2O in grams but i dont know how
  2. jcsd
  3. Mar 14, 2008 #2
    Well, if you multiply 0.371 by 5.82, I believe that would give you the mass of the anhydrous salt since 0.629 x 5.82 is the mass of the water contained in the hydrate.
  4. Mar 14, 2008 #3
    O right i got it now thnx alot
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