Percent Composition Calculator
Calculate Percent Composition
About Percent Composition
Percent composition is the percentage by mass of each element in a compound. It's calculated by dividing the mass of each element by the total mass of the compound.
% Element = (Mass of Element / Total Mass) × 100
Applications:
- Determining empirical and molecular formulas
- Quality control in manufacturing
- Nutritional analysis
- Environmental monitoring
Example - Water (H₂O):
% H = (2 × 1.008) / 18.015 × 100 = 11.19%% O = (1 × 15.999) / 18.015 × 100 = 88.81%
Percent composition is fundamental in analytical chemistry, materials science, and chemical analysis.