Question

an aluminum block has a volume of 30.0 cm³ and a mass of 81 grams. what is the density of aluminum?

Explanation:

Step1: Recall density formula

The formula for density $
ho$ is $
ho=\frac{m}{V}$, where $m$ is mass and $V$ is volume.

Step2: Identify given values

We are given $m = 81\ g$ and $V=30.0\ cm^{3}$.

Step3: Substitute values into formula

$
ho=\frac{81\ g}{30.0\ cm^{3}}$

Step4: Calculate density

$
ho = 2.7\ g/cm^{3}$

Answer:

$2.7\ g/cm^{3}$