You and a classmate were each given a yellow unknown with a, Chemistry

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You and a classmate were each given a yellow unknown with a

You and a classmate were each given a yellow unknown with a melting point of 110 degrees Celsius. You both ran a TLC on it using ethyl acetate solvent as the mobile phase. You both observed a single spot with an Rf value of 0.45. You think you might have the same unknown, but you want to make sure. What TWO relatively quick and easy lab procedures could you do to determine if you have the same unknown?

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