Essential Chemistry for IGCSE - Chemical Calculations (Section 7 - No. 6)
What are the main steps to finding the empirical formula?
Find the mass of each element, divide by their relative atomic mass, and find the simplest ratio.
Find the mass of each element and divide by their relative atomic mass.
Find the number of atoms of each element and divide by their relative atomic mass.
Calculate the mass of each element present, and add up the masses to find the total mass.
Explanation
Convert the mass percentages to moles, by dividing by relative atomic mass, and then find the simplest ratio by dividing by the smallest number of moles.
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