Vocabulary Flashcards: Stoichiometry

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Mole

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Unit of measurement for the amount of a substance

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Avogadro’s number

Back

6.022 x 10^23; the number of particles in 1 mole of a substance

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Molar mass

Back

The mass of one mole of pure substance (measured in g/mol)

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Conversion factor

Back

Ratio of equivalent values (that equal 1)

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Formula mass

Back

The sum of the average atomic masses of a compound’s elements (measured in amu)

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Percent composition

Back

Percentage (based on mass) of each element in a compound

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Stoichiometry

Back

A way to describe quantities in chemical reactions

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Mole ratio

Back

Ratio of substances in a chemical reaction that can be used as a conversion factor

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Limiting reactant

Back

The reactant that limits the amount of product that can be made

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Excess reactant

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The reactant that isn’t completely used up in the reaction