What is the empirical formula of caffeine?

##"C"_4"H"_5"N"_2"O"##

To find the empirical formula for caffeine we begin with the Molecular (true) Formula

##C_8H_10N_4O_2##

We can then reduce the Molecular Formula to the Empirical (simple) Formula by dividing each of the subscripts by the greatest common factor. In this case we divide by 2.

##C_4H_5N_2O##

This is the Empirical Formula.

I hope this was beneficial. SMARTERTEACHER