How many moles of argon are in #2.2xx10^20# molecules of argon?
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,
Looking at our amount of Argon, we see that we have
which cancels out molecules and leaves: