Ethylene dibromide was banned as a grain pesticide in 1983 because it was found to accumulate in groundwater. Laboratory tests showed EDB to be a carcinogen that causes reproductive disorders in test animals. Calculate

(a) The empirical formula and

(b) The molecular formula for ethylene dibromide given its approximate molar mass of 190 g/mol and its percent composition:12.7% C, 2.1% H, and 85.1% Br.