Each copper(II) sulfate unit is associated with five water molecules in crystalline copper(II) sulfate pentahydrate
(CuSO4 â‹… 5H2O). When this compound is heated in air above 100oC, it loses the water molecules and also its blue color:
CuSO4 ⋅ 5H2O → CuSO4 + 5H2O
If 9.60 g of CuSO4 are left after heating 15.01 g of the blue compound, calculate the number of moles of water originally
present in the compound.
