A 0.400-g sample of an unknown compound is dissolved in 20.0 mL of cyclohexane(density = 0.779g/mL),and the solution has a freezing point of 4.3oC. Pure cyclohexanehas a freezing point of 6.8oC and a freezing point depression constant, Kf= 20.5 oC·kg/mol. Calculate the molar mass of the compound.
A 0.400-g sample of an unknown compound is dissolved in 20.0 mL of cyclohexane(density = 0.779g/mL),and the solution has a freezing point of 4.3oC. Pure cyclohexanehas a freezing point of 6.8oC and a freezing point depression constant, Kf= 20.5 oC·kg/mol. Calculate the molar mass of the compound.
Chapter7: Solutions And Colloids
Section: Chapter Questions
Problem 7.87E
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A 0.400-g sample of an unknown compound is dissolved in 20.0 mL of cyclohexane(density = 0.779g/mL),and the solution has a freezing point of 4.3oC. Pure cyclohexanehas a freezing point of 6.8oC and a freezing point depression constant, Kf= 20.5 oC·kg/mol. Calculate the molar mass of the compound.
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