Last updated on Sep 22, 2026

Empirical formula example (Edexcel GCSE Chemistry Combined Science): Flashcards

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Empirical formula example

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Mass of $Mg$ in the example (g)

1.92

Mass of $Cl$ in the example (g)

5.68

Ar of $Mg$

24

Ar of $Cl$

35.5

Formula to calculate moles

$\frac{mass}{Ar}$

Moles of $Mg$ in the example

0.08

Moles of $Cl$ in the example

0.16

How to simplify the mole ratio

Divide each by smallest no. of moles

Simplified ratio of $Mg$ : $Cl$

1:2

Empirical formula of $Mg$ and $Cl$

$MgCl_2$

Explore Edexcel GCSE Chemistry Combined Science Revision Notes by Topics

The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

Explore Edexcel GCSE Chemistry Combined Science Model Answers by Topics

The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

Explore Edexcel GCSE Chemistry Combined Science Quizzes by Topics

The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

Explore Edexcel GCSE Chemistry Combined Science Exam Questions by Topics

The mole

Relative atomic mass

Relative formula Mass

Percentage composition example

Empirical formula example

Molecular formula example

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