Solved: Finding percent by mass of palmatic acid, Chemistry

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Finding percent by mass of palmatic acid

Assignment:

Commercial steric acid (C₁₇H₃₅COOH) contains palmatic acid (C₁₅H₃₁COOH) as an impurity. If a 1.115 gram sample of commerical steric acid is dissolved inm 43.95 grams of benzene, the freezing point is found to be 5.072 degrees celcius. If the freezing point of pure benzene is 5.533 degrees celcius what is the percent by mass of palmatic acid in the sample?

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