# Mercury has a density of 13.6 g/mL. If I want to gather 175 g of the metal, what volume of mercury would I need?

Sep 29, 2016

Approx. $13 \cdot m L$ of metal. Be careful with it!

#### Explanation:

By definition, $\rho , \text{density}$ $=$ $\text{Mass of stuff"/"Volume of stuff}$.

We want to find a volume, so:

$\text{Volume}$ $=$ $\frac{\text{Mass}}{\rho}$ $=$ $\frac{175 \cdot \cancel{g}}{13.6 \cdot \cancel{g} \cdot m {L}^{-} 1}$.

Note that this calculation is dimensionally consistent. We want a volume, and $\frac{1}{m {L}^{-} 1}$ $=$ $m L$.

Mercury metal is seldom seen in A level or undergraduate laboratories anymore. It is fairly poisonous, but still absolutely fascinating. You can float metal coins on it! Of course, if you have a spill, it is big clean up job becasue the metal occupies every nook and crack.