Calculate the freezing- and boiling-point changes for a solution containing 12.0 g of naphthalene (C10H8) in 50.0 g of benzene.

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  1. moles naphthalene = 12.0/molar mass.
    molality = moles naphthalene/kg solvent
    delta T = Kf*molality
    delta T = Kb*molality

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