Percent composition — Science definition
Elemental mass divided by total mass, expressed as a percent.
Where it is taught
- Percent Composition, Empirical & Molecular Formulas — Reactions, Moles & Composition, Physical Science: Chemistry, Grade 11
In use
Percent composition describes mass contribution: percent of an element = mass of that element in one mole of compound divided by the compound molar mass ×100%.
Percent Composition, Empirical & Molecular Formulas