Question

What is C7H6O3 in empirical form and how do you get there?

Answer 1

The empirical formula is the simplest formula that can be written for a compound; in this case what you have written is already in the lowest form since 7 is a prime number and can't be divided by anything except 7.IF it were (and it isn't) C6H6O3 it could be divided by 3 and written as C2H2O as the empirical formula.