7.1 Calculation of Formula Mass 7.2 Mole Concept 7.3 Atomic Mass Revisited 7.4 Calculation of Molar Mass 7.5 Calculations involving Avogadro # 7.6 Molar Volume of a Gas 7.7 Percent Composition 7.8 Empirical Formula 7.9 Empirical Mass to Molecular Formula

CALCULATIONS BASED ON FORMULAE 7.7 - Percent Composition of Compounds

The proportion by mass of each element in a compound is called percent composition.

To minimize errors due to rounding off numbers, keep as many significant figures in the calculations as possible.

Section 8.4 Calculation of Percent Composition of Compounds ..p198