# Copper has a density of 8.920 g/cm^3. What mass of copper will occupy 45 cm^3? What volume of copper will have a mass of 1.0 kg?

Feb 17, 2016

$\rho = \left(\text{Mass")/("Volume}\right)$ Simply use this relationship to get the masses.

#### Explanation:

From above, $\text{Volume}$ $=$ $\frac{\text{Mass}}{\rho}$, for a copper volume of $45$ $c {m}^{3}$, we simply multiply by $\rho$ to get mass:

$\text{Mass}$ $=$ $\rho \times \text{volume}$ $=$ $8.920 \cdot g \cdot \cancel{c {m}^{-} 3} \times 45 \cdot \cancel{c {m}^{3}}$ $=$ ??g

For the volume with a mass of $1$ $k g$, divide mass by density:

$\frac{1000 \cdot \cancel{g}}{8.920 \cdot \cancel{g} \cdot c {m}^{-} 3}$ $=$ ?? $c {m}^{3}$.