Question

1. a rock occupies a volume of 20 cm³ and has a mass of 54 g. find the density of the rock.

answer: 2.7 g/cm³
this rock has a density of 2.7 g/cm³

Explanation:

Step1: Recall density formula

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

Step2: Substitute given values

Given $m = 54\ g$ and $V=20\ cm^{3}$, we substitute into the formula: $
ho=\frac{54\ g}{20\ cm^{3}}$.

Step3: Calculate density

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

Answer:

$2.7\ g/cm^{3}$