18.72 g of a substance ' $X$ ' occupies $1.81 \mathrm{~cm}^{3}$. What will be its density measured i

Question

18.72 g of a substance ' $X$ ' occupies $1.81 \mathrm{~cm}^{3}$. What will be its density measured in correct significant figures?\

Professor PC Thomas Classes · Answer

(a) : Density $=\frac{	ext { Mass }}{	ext { Volume }}=\frac{18.72}{1.81}=10.34 \mathrm{~g} \mathrm{~cm}^{-3}$\ Since, volume contains 3 significant figures. Hence, answer will be $10.3 \mathrm{~g} \mathrm{~cm}^{-3}$.\