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Chemistry

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A solution contains 3.75g of nonvolatile pure hydrocarbon in 95g acetone. The boiling points of pure acetone and the solution are 55.95C and 56.50C, respectively. The molal boiling point constant of acetone is 1.71 C*kg/mol. What is the molar mass of the hydrocarbon?

  • Chemistry -

    delta t = Kb*molality
    Solve for molality

    molality = moles/kg solvent
    Solve for moles

    moles = grams/molar mass
    Solve for molar mass.

  • Chemistry -

    120g/mol

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