Chapter 3 Notes

Chapter 3 Notes - Avogadros number and the Mole 1 mole =...

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Chemical equations Reactants and products Equations must be balanced Aqueous, liquid, solid, gas Some Simple Patterns of Chemical reactivity Combination and decomposition reactions Combustion reactions Hydrocarbons react with oxygen to form carbon dioxide and water Formula Weights Formula weight is the sum of the atomic weights of each atom in formula Molecular weight: NaCl Percent composition from formulas (# of atoms of element)(atomic weight of element)/formula weight of compound
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Unformatted text preview: Avogadros number and the Mole 1 mole = 6.022 x 10 23 atoms/molecules Molar mass: mass in grams of one mole of a substance Molar mass is always numeribally equal to its formula weight Empirical formulas from Analyses Divide the numbers of moles of each ion by the smallest number in that group Whole number multiple=molecular weight/emipirical formula weight Limiting Reactants Percent yield = actual/theoretical...
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This note was uploaded on 03/27/2008 for the course CHEM 177 taught by Professor Greenbowe during the Spring '06 term at Iowa State.

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Chapter 3 Notes - Avogadros number and the Mole 1 mole =...

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