Question

How many moles of argon are in `2.2xx10^20` molecules of argon?

Answer 1

0.00037

Explanation:

The relationship here is very simple to understand, I hope this helps!

A very useful constant known as Avogadro's number was created to demonstrate the relationship between molecules and moles.

It was found that for every 1 mole of a substance, `6.02*10^23` molecules were in that substance. In other words, There is `6.02*10^23` molecules/mole.

Therefore,

Looking at our amount of Argon, we see that we have `2.2*10^20` molecules. We can determine our amount of moles by dividing by Avogadro's number:

`(2.2*10^20 "molecules") /(6.02*10^23 "molecules/mole")`

which cancels out molecules and leaves:

`"0.00037 moles"`