What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N by weight? Chemistry What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N by weight? a.C3HN2 b.C4H14N2 c.C2H8N d. CH4N7 Answer: C Share this Share on FacebookTweet on TwitterPlus on Google+