# Question #a0043

##### 1 Answer

#### Explanation:

Your goal here is to use a *conversion factor* that can take you from **moles** of zinc to **atoms** of zinc.

The idea is that if you know how many atoms you get in **one mole** of zinc, you can cause this to calculate how many atoms you'd get in **moles** of zinc.

Now, **one mole** of any element is said to contain **Avogadro's number**.

You can use Avogadro's number as a way to go from moles to atoms or vice versa.

#color(blue)(|bar(ul(color(white)(a/a)"1 mole" = 6.022 * 10^(23)"atoms"color(white)(a/a)|)))#

So, if one mole of zinc contains

#1.4 color(red)(cancel(color(black)("moles Zn"))) * overbrace((6.022 * 10^(23)"atoms")/(1color(red)(cancel(color(black)("mole Zn")))))^(color(purple)("Avogadro's number")) = color(green)(|bar(ul(color(white)(a/a)8.4 * 10^(23)"atoms"color(white)(a/a)|)))#

The answer is rounded to two **sig figs**, the number of sig figs you have for the number of moles of zinc.