Question

Given maas of solid is 72 gm and volume is 24 ml. Final volume of water when solid is completely immersed in water = 42 ml

Answer 1

Mass of solid $\left(M\right)=72g$

Intial volume of water $V_1=24ml$

Final volume of water $V_2=42ml$

Volume of solid $\left(V\right)=V_2-V_1=42-24=18c{m}^3$

Density of solid (D) =

$D=\frac{M}{V}=\frac{72}{18}=4.0gc{m}^{-3}$