Molarity (M) of an aqueous solution containing x g of anhyd. CuSO_4 in 500 mL solution at 32°C is 2 × 10^-1 M. Its molality will be ____ × 10^-3 m.…

Molarity (M) of an aqueous solution containing $\displaystyle x$ g of anhyd. $\displaystyle \mathrm{CuSO}_4$ in $\displaystyle 500$ mL solution at $\displaystyle 32$°C is $\displaystyle 2 \times 10^{-1} \mathrm{M}$. Its molality will be $\displaystyle \_\_\_\_$ $\displaystyle \times 10^{-3} \mathrm{~m}$. (nearest integer). [Given density of the solution $\displaystyle =1.25 \mathrm{~g} / \mathrm{mL}$ ]