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Created by: JackKnight03
Created on: 26-10-19 16:27

SC9a - What is the difference between emirical and molecular forumla?

Molecular formula is the actual amount of atoms of each element in a compound Empirical formula is the simplest whole number ration of atoms of each element in a compound

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How do you work out the empirical formula of a compound from the masses of each element?

Find the moles by doing mass/Mr Divide both of the molar values by the smalles of the two e.g: 10g of Ca and 17.8g of Cl 10/40 = 0.25 17.8/35.5 = 0.5 0.25/0.25 = 1 0.5/0.25 = 2 1:2 ratio

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How do you work out the empirical formula of a compound from the masses of each element?

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Find the moles by doing mass/Mr Divide both of the molar values by the smalles of the two e.g: 10g of Ca and 17.8g of Cl 10/40 = 0.25 17.8/35.5 = 0.5 0.25/0.25 = 1 0.5/0.25 = 2 1:2 ratio