# Mercury, which is often used in thermometers, has a density of 13.534 g/mL at room temperature. What volume of mercury contains 10.0 g?

##### 1 Answer

#### Explanation:

A substance's **density** basically tells you how much mass of said substance occupies **one unit of volume**.

In your case, the density of mercury is given in *Grams per milliliter*,

So, mercury is said to have a density of

You want to know the volume of mercury that will contain *lighter* than the mass associated with **smaller** than

You can use dimensional analysis using the density of mercury as a *conversion factor*

#10.0color(red)(cancel(color(black)("g"))) * overbrace("1 mL"/(13.534color(red)(cancel(color(black)("g")))))^(color(purple)("given density")) = color(green)(|bar(ul("0.739 mL"))|)#

The answer is rounded to three **sig figs, the number of sig figs you have for the mass of your sample.