Khan Academy on a Stick : Chemical reactions (stoichiometry)

Khan Academy on a Stick

Chemistry

Molecular and Empirical Formulas
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Introduction to molecular and empirical formulas. Calculating molecular mass.
The Mole and Avogadro's Number
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Introduction to the idea of a mole as a number (vs. an animal)
Formula from Mass Composition
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Figuring out the empirical formula from a molecules mass composition
Another mass composition problem
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Another exercise converting a mass composition to an empirical formula.
Balancing Chemical Equations
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The art of balancing equations in chemistry!
Stoichiometry
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Introduction to stoichiometry
Stoichiometry: Limiting Reagent
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Stoichiometry problem where we have a limiting reagent!
Spectrophotometry Introduction
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Spectrophotometry, Transmittance, Absorbance and the Beer-Lambert Law
Spectrophotometry Example
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Spectrophotometry Example - Determining concentration based on absorbance