You have discovered a new amino acid that you name in honor of your favorite course. Twofourteeninine has an alpha-amino and an alpha-carboxylic group, and an ionizable side chain that carries an amino group. A titration curve of twofourteeninine is shown below. Net charge a P CD e f g I I 0 1 2 4 5 6 7 pH 1 I 8 9 10 11 12 13 What are the approximate pKą values of twofourteeninine (to the nearest half-pH unit)? Check all that apply.

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