Pheromones are compound secreted by the females of many insect species to attract males. one of these compounds contains 80.78 percent C, 13.56 percent H, 5.66 percent O. A solution of 1.19 g of this pheromone in 7.23 g of benzene freezes at 2.52 Celsius. What are the molecular formula and molar mass of the compound?
(The normal freezing point of pure benzene is 5.5 Celsius)