Question

A substance of density 4gcm causes 60g of turpentine (density 0.80) to overflow froma displacement vessel. What is the mass of the substance ?

Answer 1

First, find the volume of turpentine:

$$V=\frac{m}{\rho}=\frac{60}{0.8}=75\text{ cm}^3.$$

Thus, the mass of the substance was

$$M=V\rho_s=75\cdot4=300\text{ g}.$$