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March 28, 2017

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hen 9.3 g of an unknown non-electrolyte is dissolved in 50.0 g of benzene, the boiling point the boiling point increased to 81.19 degrees C from 80.1 degrees C. If the Kbp of the solvent is 2.53 K/m, calculate the molar mass of the unknown solute.
The answer is 432. I don't know how

  • chemistry - ,

    delta T = Kb*molality
    Solve for molality

    molality = moles/kg solvent
    Solve for moles.

    moles = grams/molar mass
    solve for molar mass.

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