A. Percentage Composition from a Chemical Formula of a compound
x 100 %
% composition. Make of element in 1 mole
Molar mass of a compound
STEPS HOW TO SOLVE PERCENTAGE COMPOSITION:
1. Substitute the value of the given element or molecule divided by the molar mass of
formula mass.
2. The quotient will be multiplied by 100
3. The product will be the percentage composition of a given substance.
The following problems are given for you to practice.​