chemistry

Cobalt(2) chloride is commonly obtained from chemical supply houses as a hydrate with the formula COCL2*6H2O an analysis showed that 25.0 g of this hydrate contains 11.3 g of water what is the percent water by weight in this hydrate?'

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asked by olia
  1. %H2O = (mass H2O/mass sample)*100 = ?

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  2. 45.2

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