Question:
A solid having density of $9 \times 10^{3} \mathrm{~kg} \mathrm{~m}^{-3}$ forms face centred cubic crystals of edge length $200 \sqrt{2} \mathrm{pm}$. What is the molar mass of the solid?
(Avogadro constant $\cong 6 \times 10^{23} \mathrm{~mol}^{-1}, \pi \cong 3$ )
Correct Option: , 2
Solution:
$0.0305 \mathrm{~kg} \mathrm{~mol}^{-1}$
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