Question: how many moles of water are in 2 moles of copper(ii) sulfate pentahydrate?
Answer: So for 0.019945 moles of copper (II) sulfate pentahydrate we lost 0.0799298 moles of water or (0.07992980.019945)=4.00 moles of water per mole of copper (II) sulfate pentahydrate.