Question
Dieldrin, an insecticide, contains C, H, Cl and O. Combustion of 29.72 mg of Dieldrin gave 41.21 mg CO2 and 5.63 mg of H2O. In a separate analysis 25.31 mg of Dieldrin was converted into 57.13 mg AgCl.
What is the empirical formula of Dieldrin?