Chemistry Topic 3 – The Mathematics of Formulas and Equations

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Formula mass
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The mass of the smallest unit of a compound; the sum of the atomic masses of all the atoms present.
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Gram formula mass
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The formula mass expressed in grams instead of atomic mass units.
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Mole
Mole
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The number of atoms of carbon present in 12.000 grams of C-12.
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Percentage composition
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Represents the composition as a percentage of each element compared with the total mass of the compound.

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