Question

2. Density is a physical property of a molecule that's measured as mass per unit volume Given that deasity is
usually expressed in the units of g/cm, calculate the density of a cube of plastic that has a mass of 2.331 g and
an edge length of 1.500 cm (volume of a cube is V=b). Be sure to show all steps in the process and include
units throughout the problem.

Answer 1

Answer: 0.6906 g/cm^3

Explanation:

$We know that density =\frac{\text { mass }}{\text { volume }} \\\\Volume of the cube, V=l^{3}=(1.500 \mathrm{~cm})=3.375 \mathrm{~cm}^{3} \\\\Density of the cube =\frac{2.331 \mathrm{~g}}{3.375 \mathrm{~cm}^{3}}=0.6906 \mathrm{~g} / \mathrm{cm}^{3} \\\\ \therefore{\text{Density of the cube,} \ \rho_{\text {cube }}{=0.6906 \mathrm{~g} / \mathrm{cm}^{3}$