copper ii sulfate pentahydrate, with the formula CuSO4x5H2O, has a deep blue color. when heated to remove water, the crystals crumble and turn white. What is the percentage, by mass, of water in copper II sulfate pentahydrate crystals?
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Answer:
36.05% water
Explanation:
Mass of Copper (II) sulfate pentahydrate: 249.68g/mol
Mass of water molecule 18 g/mol
There are 5 water molecules in Copper (II) sulfate pentahydrate
18 g/mol times 5 = 90g/mol
The formula for percent:
(90/249.68) x 100 =
36.05% water
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