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3. A solution is made of 9.85g of t-butanol and 0.25g of ethylene glycol freezes at 20.7C. The freezing point of pure t-butanol is 25.5C.

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3. A solution is made of 9.85g of t-butanol and 0.25g of ethylene glycol freezes at 20.7C. The freezing point of pure t-butanol is 25.5C. The Kf value for t-butanol is 11.8C/m (a) Calculate the molality of this solution. (b) Calculate the molar mass of ethylene glycol

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