Unit 9 chem 100

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7 Terms

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1 mole anything =

6.022×10²³

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Atomic mass of an element

The unit factor that converts between mass and moles

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Formula Mass

The sum of the atomic weight for all of the atoms in the formula of a compound

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Percent of composition

% element= g element in FW/ formula weight Ă—100

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Empirical Formula

the lowest whole number ratio of atoms

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Molecular formula

the actual number of atoms in a molecule