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Quantitative Chemistry (Relative formula mass (Mr) (The mass of one…
Quantitative Chemistry
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The Mole
The amount of substance which contains the Avogadro Constant of a specified particle or formula unit.
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Empirical Formula
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Divide the mass/percentage of each element by the relative atomic mass of the element, to convert to moles
Simplify the mole ratio by dividing each number by the smallest. If this does not give a whole number, multiply each by an appropriate figure
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Molecular Formula
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Divide relative molecular mass of a molecule by the relative mass of the empirical formula and multiply each atom by that
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Gas Volumes
At room temperature, one mole of gas occupies 24dm^3
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