Note to moderator: please read the answerline carefully. Some molecular dimers can display two values of this measured quantity due to Davydov splitting. When placed in solution, PIC (“P-I-C”) chloride experiences an increase in this quantity due to supramolecular self-aggregation, (-5[1])making a structure called (15[1])a J-aggregate. Shifts that increase or (15[1])decrease this non-dimensionless quantity are respectively named using the prefixes “batho” and “hypso.” By counting features like alkyl groups, (*) exocyclic double bonds, and bonds that extend conjugation, (-5[1])one (15[1])can estimate this quantity (15[1])with the Woodward-Fieser rules. (10[1]-5[1])When (10[2]-5[2])measuring concentration with Beer's law, (10[1])you (-5[1])should first find this (10[1])quantity to increase the measurement’s signal-to-noise ratio. For 10 points, name this quantity, the color of light (10[1])that produces the biggest signal in absorption spectra. ■END■ (10[3]0[1])