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In: Chemistry

A student loaded a mixture onto a small flash chromatography column in 1 mL of ethyl...

A student loaded a mixture onto a small flash chromatography column in 1 mL of ethyl
acetate, then proceeded to elute with hexanes/ethyl acetate 10:1. He/she found that all of the mixture came off in the first 3 fractions, with no separation. What technical mistake did the student make?

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