Percent Composition Calculator
Calculate the percent composition by mass of each element in a chemical compound.
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Calculate element masses for a specific sample size
Compound Analysis
C6H12O6
Molar Mass
180.156 g/mol
Total Atoms
24
Percent Composition
OOxygen
53.28%6 atoms x 15.999 g/mol = 95.994 g/mol
CCarbon
40.00%6 atoms x 12.011 g/mol = 72.066 g/mol
HHydrogen
6.71%12 atoms x 1.008 g/mol = 12.096 g/mol
Mass in 100g Sample
Oxygen (O)53.2838 g
Carbon (C)40.0020 g
Hydrogen (H)6.7142 g
Total100.0000 g
Formula Summary
Molecular Formula
C6H12O6
Empirical Formula
OCH2