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 is the first ionisation energy of barium larger than the first ionsiation energy of caesium?
In the presence of ultraviolet light, ethane and chlorine react to give a mixture of products. What are the products of this reaction?
Describe briefly how you would show that manganese(II) ions catalyse the reaction between manganate(VII) ions and ethanedioate ions, in dilute sulphuric acid.
How might you distinguish between a primary and secondary alcohol?