Question

You have a rock with a volume of $15c{m}^3$ and a mass of 45 g. What is its density?

• A. 0.33 $\frac{g}{c{m}^3}$
• B. 3$\frac{g}{c{m}^3}$
• C. 2$\frac{g}{c{m}^3}$
• D. 30 $\frac{g}{c{m}^3}$

Answer 1

The correct option is B 3$\frac{g}{c{m}^3}$

Density is mass divided by volume, so the density is 45 g divided by $15c{m}^3$.
$Density=\frac{Mass}{Volume}$
$Density=\frac{45g}{15c{m}^3}=3.0\frac{g}{c{m}^3}$.