These videos cover specification points 1.30-1.33 of the Edexcel IGCSE Chemistry 2017 specification.
1.30 calculate percentage yield
1.31 understand how the formulae of simple compounds can be obtained experimentally, including metal oxides, water and salts containing water of crystallisation
1.32 know what is meant by the terms empirical formula and molecular formula
1.33 calculate empirical and molecular formulae from experimental data
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