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Section 2: Formula
MassChapter 7: Chemical Composition
Learning Goals0Calculate formula mass.
Formula Mass0For any compound, the formula mass is the sum of the atomic masses of all the atoms in its chemical formula:
Formula Mass0Like the atomic mass for atoms,
formula mass characterizes the average mass of a molecule or formula unit.
0H2O:0Formula mass = 2(1.01 amu) + 16.00 amu
= 18.02 amu
Formula Mass0What is the formula mass of carbon tetrachloride?
0What is the formula mass of dinitrogen monoxide?
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