Pheromones are compounds secreted by female of many insect species to attract males. One of these compounds contains 80.785 C, 13.565 H, AND 5.66% O. A Solution of 1.69g of this compound in 9.23g of benzene freezes at 2.18 degree celsius. What are the molecular formula and molar mass of the compound? ( the normal freezing point of pure benzene is 5.50 degree celsius)