chemistry chapter 6

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11 Terms

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molecular weight

average mass of a substances molecules

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formula weight

molecular weight for ionic compounds

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molecular formulas

sum of all the atomic weights for the atoms in a molecule

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the mole/ avogadros number

6.022 × 10²³

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molar mass

the mass in grams of one mole of a substance, numerically equal to molecular weight

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molar mass units

g/mol

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reaction coefficients tell us

the ratio of reactants to products made

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limiting reagent

the reactant that runs out first, thus limiting the reaction

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theoretical yield

amount of product formed assuming complete reaction of the limiting reagent

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actual yield

the amount of product actually formed in a reaction

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percent yield:

actual yield / theoretical yield x 100