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You are asked to rapidly assay the purity of a sample, but do not have access to instrumentation. You decide to use TLC and melting point to check its purity. With 10:1 hexane:ethyl acetate solvent, the sample gives one spot by TLC (Rf = 0.15) and has a melting point range of 115 - 125 °C.

(a) Do you think the sample is pure? Why or why not?
(b) Using the tools you have at hand (a melting point apparatus and TLC setup), what other data could you collect to test your hypothesis from part a? Give two possibilities.

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