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

1 Answer
McWilliams · Stefan V.
Feb 14, 2018

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"#

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