# At 20 C the density of mercury is 13.6 g/cm^3. What is the mass of 16.8 cm^3 of mercury at 20 C?

Jan 4, 2018

Approx. $230 \cdot g$....

#### Explanation:

By definition, $\text{density,}$ $\rho = \text{mass"/"volume}$...

..and thus to get the $\text{mass}$ we take the product....

$\text{mass"=rhoxx"volume}$...and here are quoted both $\rho$ and $\text{volume}$. And so.....

$\text{mass"=underbrace(13.6*g*cancel(cm^-3))_"density"xxunderbrace(16.8*cancel(cm^3))_"volume"=underbrace(??*g)_"mass}$.

Often, in the lab you can pick up a container of mercury, and be surprised by its mass....mercury is dense stuff....