Examples
•what is the mass, in amu, of 75 Al atoms?
(1 Al = 26.98 amu)
75 atoms
1 atom
26.98 amu
= 2024 amu
•what is the mass (in amu) of a C sample with 62 atoms? (1 C = 12.01 amu)
•744.6 amu
•what’s the amu mass of 15 iron atoms?
(1 Fe = 55.85 amu)
•837.8 amu