# How many moles of water are there in hydrated copper sulfate?

i.e. $C u S {O}_{4} \cdot 5 {H}_{2} O$, so called $\text{blue vitriol...}$
${\underbrace{C u S {O}_{4} \cdot 5 {H}_{2} O}}_{\text{deep blue}} + \Delta$ $\rightarrow$ ${\underbrace{C u S {O}_{4}}}_{\text{white salt}} + 5 {H}_{2} O \uparrow$