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The Curie Notes

Curie Notes 08: Stoichiometry: Limiting Reagents and Yield

How much should you obtain, and how much did you really obtain? I teach you to answer both, from a bicycle workshop to my radium chloride.

Learn mole ratios, grams-to-grams calculations, limiting and excess reagents, and theoretical, actual, percent and multi-step yield, worked step by step.

Marie Curie November 8, 2026 26 min

#Marie Curie #Curie Notes #Chemistry #Stoichiometry #Limiting reagent #Percent yield #General chemistry

The Curie Notes

Curie Notes 06: Chemical Formulas, Percent Composition and Empirical Formulas

A handful of weighings becomes a formula. I show you how to read one, how to find it from the balance, and how a decigram of radium chloride gave radium its atomic weight.

Read chemical formulas, calculate percent composition, find empirical and molecular formulas in four steps, and work out the water in a hydrate.

Marie Curie November 8, 2026 32 min

#Marie Curie #Curie Notes #Chemistry #Empirical formula #Percent composition #Hydrates #Stoichiometry