Empirical
and Molecular
Formulae
This AQA 3.1.2 section explains how formulas show chemical composition. Students learn the difference between empirical formula and molecular formula, how to calculate empirical formula from mass or percentage composition, and how to use relative molecular mass to find the molecular formula.
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Empirical and Molecular Formulae Map
AQA A-level Chemistry · 3.1.2 Amount of substance: empirical and molecular formulae
Empirical formulae from masses and percentages, awkward ratios, molecular formulae and combustion analysis on one A4 page.
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3.1.2.4
- i
know that empirical formula is the simplest whole number ratio of atoms of each element in a compound
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