When 5.71g of naphthalene is added to 152g of benzene the solution freezes at 3.98 degrees Celsius.  What is the molar mass of naphthalene ? ( Freezing Point of pure benzene = 5.46 degrees Celsius and Kf of naphthalene = 5.07 degrees Celsius/ molal )

Chemistry: Principles and Practice
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Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
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When 5.71g of naphthalene is added to 152g of benzene the solution freezes at 3.98 degrees Celsius.  What is the molar mass of naphthalene ?

( Freezing Point of pure benzene = 5.46 degrees Celsius and Kf of naphthalene = 5.07 degrees Celsius/ molal )

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