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Cocaine is a non-electrolyte that has a molecular weight of 303.4 g/mole. How many grams must be dissolved in 25.0 mL of Chloroform (density = 1.484 g/mL) to raise its boiling point to 65.5 Celsius? The boiling point of pure Chloroform is 61.2 Celsius.
Kb Chloroform = 3.62 Celsius/m

  • chemistry -

    Calculate delta T for CH3Cl3.
    delta T = Kb*m
    Solve for m

    m = moles/kg solvent
    Solve for moles.

    moles cocaine = grams/molar mass
    Solve for grams.

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