Question

a pair of students obtained the following data:

• mass of sample: 8.64 g
• volume of water displaced: 3.2 ml

material	density
concrete	2.3 g/ml
wood (oak)	0.60 g/ml
cork	0.12 g/ml
aluminum	2.7 g/ml

select an answer and submit. for keyboard navigation, use the up/down arrow keys to select an answer.

Explanation:

Step1: Recall density formula

Density is calculated as $
ho = \frac{m}{V}$, where $m$ is mass and $V$ is volume.

Step2: Substitute values

Given $m = 8.64\ \text{g}$ and $V = 3.2\ \text{mL}$, substitute into the formula: $
ho = \frac{8.64}{3.2}$.

Step3: Calculate density

$\frac{8.64}{3.2} = 2.7\ \text{g/mL}$.

Answer:

The material with density $2.7\ \text{g/mL}$ is aluminum, so the sample is aluminum.