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Problem- Pure benzophenone freezes at 48.1degee c. A solution of 1.25g of biphenyl c12h10 molar mass=154.2g/mol) plus 25.38g of benzophenone froze at 16.8degree c. Calculate de Kf of benzophenone.

Knowing that Kf= delta Temp/mass

Please show how you obtained the answer

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