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Solution: An unknown compound shows an elemental analysis of 40% C, 6....

Question

An unknown compound shows an elemental analysis of 40% C, 6.7% H and 53.3% O. When 289.418 g of the unknown compound is dissolved in 1.8 L of water, the freezing point of the solution is lowered by 3.32oC. Assuming that the compound is a nonvolatile, calculate its molar mass and its molecular formula. The freezing point constant, Kf, of water is 1.86 oC/m.