Empirical and Molecular Formula Calculator
ChemistryAtomic Structure & Periodic TableCommunity
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Determine empirical and molecular formulas step-by-step from percentage composition and experimental molar mass. Visualise the resulting chemical structure in interactive 3D ball-and-stick view.
Lesson: Combustion analysis gives element mass percentages. Divide grams by atomic mass to find moles, normalise by the lowest mole count to find integer ratios, and scale the empirical unit to match the molecular molar mass.
Created by a teacher with Simulic AI and reviewed by the Simulic team.
How to use
Parameters you can change
- Preset Substance Glucose (C₆H₁₂O₆), Acetic acid (C₂H₄O₂), Benzene (C₆H₆), Ethane (C₂H₆), Caffeine (C₈H₁₀N₄O₂), Custom Mixture
- Carbon (C) 0–100 %
- Hydrogen (H) 0–100 %
- Oxygen (O) 0–100 %
- Molar Mass 10–500 g/mol
