Question

What is the density of an object with a mass of 150.0 g and a volume of 20.0 mL?

Answer 1

Density = M÷V

D = $\frac{150}{20}$

D= 7.5 g/m³

Answer 2

Given,

Mass of the object = 150 grams

Volume of the object = 20 ml

To find,

The density of the given object.

Solution,

To solve this mathematical problem, we have to first know about the mathematical relationship between mass, density and volume of an object.

Mathematical relationship :

Density = Mass / Volume

Density = 150/20

Density = 7.5 g/ml (By putting the given values.)

[ The ratio of the mass to volume is the density, that's why the unit of the density is also the ratio of the unit of mass to the unit of volume. ]

Hence, the density of the object is 7.5 grams per millilitre.