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# Addition of 0.40 g of a compound to 45.5 m L of benzene (density $0.879 g mL^{−1}$) lowers the freezing point from 5.51$^{\large\circ}$C to 4.998$^{\large\circ}$C. If $K_f$ for benzene is 5.12 K $Kg mol^{−1}$, calculate the molar mass of the compound.

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## 1 Answer

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400
Hence (A) is the correct answer.
answered Jun 13, 2014