2 the density of zinc is 7.1 grams per cubic centimeter. the table shows the mass (in grams) and the volume…

Explanation:

Step1: Recall density formula

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

Step2: Calculate density of Substance 1

$\rho_1=\frac{m_1}{V_1}=\frac{3.0}{21.3}\approx0.14$ g/cm³

Step3: Calculate density of Substance 2

$\rho_2=\frac{m_2}{V_2}=\frac{7.1}{0.5} = 14.2$ g/cm³

Step4: Calculate density of Substance 3

$\rho_3=\frac{m_3}{V_3}=\frac{14.2}{2.0}=7.1$ g/cm³

Step5: Calculate density of Substance 4

$\rho_4=\frac{m_4}{V_4}=\frac{2.2}{4.9}\approx0.45$ g/cm³

Answer:

Substance 3