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-A student started the purification and recrystallization with a crude sample of adipic acid that weighed 20.421 g and obtained a yield of pure adipic acid of 73.5% How much pure adipic acid was recovered? (Please Explain)

-The melting point of Jonny's adipic acid was 15 degrees below the literature value. Was his adipic acid pure or impure?What do you think Jonny may have done wrong?

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