3.05 g of hydrated copper sulphate produces 1.94g of anhydrous salt.assuming complete removal of all water of crystallization,determine the formula of hydrated copper sulfate

Answer 1

3.05 g CuSO4.XH20
1.95 g CuSO4
moles CuSO4=1.95/159.6=1.22E-2
grams water=difference above or
2.10 g, or moles water=2.10/18=.117

ratio moles water/salt=.117/.0122=9.6

well, X is not going to be 9.6, so round to 10.
Copper (II) sulfate decahydrate

Answer 2

It was good