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

Answer:

2.1 g/cm^3 so its c

Answer 2

Answer:

C. 2.1 g/cm^3

Step-by-step explanation:

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

The formula for density is:

$D=\frac{M}{V}$

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:

$D=\frac{4.2}{2}gcm^{-3}$

We simplify to obtain:

$D=2.1gcm^{-3}$