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A 3.40-g sample of a mixture of naphthalene (CH) and pyrene (CH) is dissolved in 35.0 g benzene (CH). The freezing point of the solution

A 3.40-g sample of a mixture of naphthalene (CH) and pyrene (CH) is dissolved in 35.0 g benzene (CH). The freezing point of the solution is 2.23 C. What is the mass (in grams) of the naphthalene in the sample mixture? The freezing point of benzene is 5.51 C and Kf is 5.12 Ckg/mol.

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