Empirical formulae - PowerPoint PPT Presentation

Empirical Formulae

Empirical Formulae. “The Empirical Formula Strikes Back”. Type 1: Determining the empirical formula of a compound from mass. Ex. 1. What is the empirical formula for a compound if an 8.1 g sample contains 4.9 g of magnesium and 3.2 g of oxygen?

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Empirical formulae

Empirical formulae. An empirical formula is the smallest whole number ratio of atoms in a compound. Eg; Hexane has a molecular formula of C 6 H 14 . This gives a C : H ratio of 6 : 14 , which can be simplified to; 3 : 7 This cannot be further simplified whilst remaining whole numbers.

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