Question

The density of an object is its mass per unit volume. An object has a mass of 4.2 grams and a volume of 2 cm3. What is the density of the object?

A. 8.4 g/cm^3
B. 0.5 g/cm^3
C. 2.1 g/cm^3
D. 2.2 g/cm^3

Answer 1

2.1 g/cm^3 so its c

Answer 2

C. 2.1 g/cm^3

Explanation:

The density of an object is its mass per unit volume.

The formula for density is:

`D=(M)/(V)`

The object has a mass of 4.2 grams.

`\implies M=4.2g`

and a volume of 2 cubic centimeters

`\implies V=2cm^3`

We substitute the known values into the formula to get:

`D=(4.2)/(2)gcm^(-3)`

We simplify to obtain:

`D=2.1gcm^(-3)`