Question

A piece of copper of mass 106 g is dipped in a measuring cylinder containing water at 22 ml mark. The water rises to 35 ml mark. Find
a) volume of the copper piece.
b) density of copper.

Answer 1

Mass of copper, m =106 g
Initial volume of water in measuring cylinder, V = 22 ml
Volume of water in measuring cylinder containing the copper block, V' = 35 ml
(a) Volume of copper piece = V' - V = 35 - 22 = 13 ml = 13 cc
(b) Density of copper =$\frac{m}{V-V^{\prime }}=\frac{106}{13}=8.15g/cc$