The weight of $1 imes 10^{22}$ molecules of $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$

Question

The weight of $1 	imes 10^{22}$ molecules of $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$ is  -.\

Professor PC Thomas Classes · Answer

4.14 g ; Weight of $6.023 	imes 10^{23}$ molecules of $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}=249 \mathrm{~g}$\ $	herefore$ Weight of $1 	imes 10^{22}$ molecules of $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$\ $=\frac{249}{6.023} 	imes \frac{10^{22}}{10^{23}}=4.14 \mathrm{~g}$\