Conversions: Atoms to Moles
 
Example: Convert 5.00 x 1020 atoms of cobalt to moles.
 
We know that there are 6.022 x 1023 (Avagadro's number) atoms in one mole. In order to find out how many moles are in the amount of atoms we were given, you can divide. It will look like this:
 
5.00 x 1020 atoms Co x 1 mol Co/ 6.022 x 1023 atoms Co= 8.30 x 10-4 mol Co
 
This is what it looks like on paper.
 
Example: Convert 125 atoms of neon to moles.
 
We go about doing this problem the same way we did the one above.
125 atoms Ne * 1 mol/ 6.022 x 1023 atoms Ne
 
This is what it would look like on paper.


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