Mole to Atom/Molecule conversions

Today we learned how to convert, for example 2 moles of Iron into atoms.
To do this we cross multiply using avagadros number:

2 mol Fe x 6.02*1023    = 1.2*10 24 atoms of Iron
                      1 mol
This is just one of the many conversions we can do with avagadros number. Here are some more:


How many moles are present in 3.9*10 25 Nitrogen atoms?

3.9*10 25 Nitrogen atoms x 1 mol            = 64.8 moles
                                          6.02*10 23
or How many hydrogen atoms are there in 5.2 molecules of H2O?

5.2*10 13 molecules H2O x 2 Hydrogen atoms  = 2.6*10 13
                                          1 molecule H2O

These are just some of the different conversions we can do with moles!!!



Happy Calculating!!!!