The following data were obtained from experiments to find the molecular formula of procaine, a local anesthetic, which contains only carbon, hydrogen, nitrogen, and oxygen. complete combustion of a 3.54g sample of procaine with excess o2 formed 8.58 g of co2 and 2.70 g h2o. another sample of mass 2.35 g was found to contain 0.279 g of n. the molar mass of procaine was found to be 236.find the molar formula of procaine