Calculate the empirical formula of a compound containing 77.7% Iron and 22.3% of oxygen.
An empirical formula is the simplest whole number ratio of atoms of each element present in the compound.1) Divide by atomic relative mass to find the number of moles. 2) Find a ratio between the moles. 3) Divide the ratios by smallest number. 4) Obtain the number of atoms.1:1 ratio, therefore FeO.
JS
Related Chemistry A Level answers
All answers ▸Why does the First Ionisation Energy decrease down a group in the Periodic Table?
Explain, in terms of atomic energy levels, how an atomic emission spectrum is formed
What is meant by 1st ionisation energy?
State and explain the trend in ionisation energies and its effect on the reactivity of groups containing metals.