Empirical Formulae - the simplest whole number ratio of atoms of each element present in a compound
To work out the Empirical formulae split the answer up into 4 parts:
Mass/percentage composition(%)
Mr
Moles
Ratio
First work out the moles, by doing Mass(or %)/Mr.
Then work out the ratio, by dividing all of the ratios by the smallest ratios. You then need to make all the ratios integers if they are not already, by timesing or dividing.
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