•how many atoms are in 1172.49 amu of Na atoms? (1 Na = 22.99 amu)
More Examples
1172.49 amu
22.99 amu
1 Na atom
= 51.00 Na atoms
•How many Cu atoms are in a 1779.4 amu sample? (1 Cu = 63.55 amu)
•28.00 atoms
•How many Ar atoms in 3755.3 amu?
(1 Ar = 39.95 amu)
•94.00 atoms