A 1505 g sample of unknown was dissolved in 50 ml of, Ask an Expert

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A 1.505 g sample of unknown was dissolved in 50 mL of benzene(density = 0.879 g/mL) Solution had melting point of 4.70 degree C.The freezing point of pure benzene is 5.53 degree C and the freezing point depression constant, Kf , is 5.12 degreeC/m. Calculate the molecular weight of the unknown.

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