Question

a solid weighs 80 g in air, 64 g in water. calculate the relative density of solid.

Answer 1

$$\begin{gathered} \mathrm{Relative}\mathrm{density}=\frac{\mathrm{Weight}\mathrm{of}\mathrm{the}\mathrm{substance}\mathrm{in}\mathrm{air}}{\mathrm{Loss}\mathrm{of}\mathrm{weight}\mathrm{in}\mathrm{water}} \\ =\frac{80}{80-64} \\ =\frac{80}{16} \\ =5 \end{gathered}$$