To make a plating solution with $30$ volume$\%NiS{O}_4*6*H_{2}O$ how much water $($in moles$)$

requires to be added to $1000ml$ of $NiS{O}_4*6*H_{2}O$ solution that contains

$70\%NiS{O}_4*6*H_{2}O$ by volume $($balance water$)?$ Room temperature

is used for the procedure. The partial molar volumes, $\frac{?}{\text{b}\text{a}\text{r}}(V{)}_i,$ of the components are provided in the

table given below: