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Chemical reactions and stoichiometry

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Chemical reactions introductionBalancing chemical equationsBalancing more complex chemical equationsVisually understanding balancing chemical equationsBalancing another combustion reactionBalancing chemical equation with substitution
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Balancing chemical equations 1Get 3 of 4 questions to level up!
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StoichiometryStoichiometryStoichiometry example problem 1Stoichiometry example problem 2
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Ideal stoichiometryGet 5 of 7 questions to level up!
Converting moles and massGet 3 of 4 questions to level up!
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Stoichiometry: Limiting reagentLimiting reactant example problem 1Limiting reagents and percent yieldIntroduction to gravimetric analysis: Volatilization gravimetryGravimetric analysis and precipitation gravimetry2015 AP Chemistry free response 2a (part 1 of 2)2015 AP Chemistry free response 2a (part 2/2) and b
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Limiting reagent stoichiometryGet 5 of 7 questions to level up!
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Empirical, molecular, and structural formulasMolecular mass percentageMolecular weight percentagesEmpirical formula from mass compositionAnother mass composition problem
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Introduction to redox reactionsOxidation numberOxidation-reduction (redox) reactionsDissolution and precipitationPrecipitation reactionsDouble replacement reactionsSingle replacement reactionsComplete ionic and net ionic equations2015 AP Chemistry free response 3aComplete ionic and net ionic equations

About this unit

We are now going to delve into the heart of chemistry. We learn ways of representing molecules and how molecules react. To do this, we'll even think about "how many" of a molecule we have using a quantity called a "mole".