Empirical Formula & Molecular Formula Determination From Percent Composition

This chemistry video tutorial explains how to find the empirical formula given the mass in grams or from the percent composition of each element in a compound. If you're given the mass percent, you can simply treat it as if you were given the mass in grams. This video explains how to find the molecular formula given the molar mass of the compound. You can do this once you have the empirical formula. This video explains all of it. It has plenty of practice problems and examples for you to master this lesson.

Stoichiometry - Free Formula Sheet:

Chemistry 1 Final Exam Review:

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Introduction to Moles:

How To Calculate The Molar Mass:

How To Convert Grams to Moles:

How To Convert Moles to Grams:

Moles to Atoms Conversion:

Grams to Molecules Conversion:

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Grams to Atoms:

Moles, Atoms, & Grams Conversions:

How To Balance Chemical Equations:

Stoichiometry - Basic Introduction:

Avogadro's Number:

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Limiting Reactant Problems:

Excess Reactant Problems:

Theoretical & Percent Yield:

Percent Yield - More Examples:

Percent Error:

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Percent Composition By Mass:

Empirical Formula Problems:

Empirical Formula - Hydrated Compounds:

Combustion Analysis:

Stoichiometry Practice Test:

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Final Exams and Video Playlists:

Full-Length Math & Science Videos:

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