5.2 Mass Percents and Empirical and Molecular Weights | High School Chemistry

Chad begins this lesson by showing how to calculate mass percents from a molecular formula. He then shows the relationship between molecular formulas and empirical formulas. Finally, Chad concludes the lesson by showing how to determine a compound’s empirical formula from its mass percents. He further shows that if you’re given the molecular weight then you can also determine the molecular formula.

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00:00 Lesson Introduction
00:33 How to Calculate Mass Percent
03:30 Empirical vs Molecular Formulas
04:52 How to Determine Empirical Formulas from Mass Percents

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