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A crystalline hydrated zinc sulfate salt has the chemical formula ZnSO4•xH2O, where x is the number of water molecules attached. 8.2 grams of this salt was heated to evaporate the water until 4.6 grams remained. (a) Work out the mass of water evaporated. (b) Work out the value of x in the formula ZnSO4•xH2O.... show more A crystalline hydrated zinc sulfate salt has the chemical formula ZnSO4•xH2O, where x is the number of water molecules attached. 8.2 grams of this salt was heated to evaporate the water until 4.6 grams remained.

(a) Work out the mass of water evaporated.
(b) Work out the value of x in the formula ZnSO4•xH2O.
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