Answer
$1.62 \text{ cm}^{3}$
Work Step by Step
Density = Mass / Volume
Volume = Mass / Density
Put the given values in this formula and calculate volume
$\text{Volume}=\frac{31.1\text{ g}}{19.3\text{ g}\cdot\text{cm}^{-3}}=1.62\text{ cm}^{3}$