Question

A compound containing the elements C, H, N, & O is analyzed. When a 1.2359 g sample is burned in excess oxygen, 2.241 g of CO2(g) is formed. The combustion Analysis also showed that the sample contained 0.0648 g of H.
(i) Determine the mass, in grams, of C in the 1.2359 g sample
(ii) When the compound is analyzed for N content only, the mass percent of N is found to be 28.84%.
(iii) Determine the mass, in grams, of O in the original 1.2359 g sample of the compound.
(iv) Determine the empirical formula of the compound.

Answer 1

I believe the answer is number three