Molar absorptivity Molar absorptivity, e=A/cI A= absorbance, c= sample concentration in moles/liter 1=length of light path through the sample in cm 25,000 9 osk mux=222 nm 3 max 222 nm 20,000 15,000 Isoprene 0.4 10,000 C=4·105 moles/liter I= 1 cm 0 5,000 Isoprene in hexane soln 200220240260280300320340 200220240260280300320340 入(nm 入rMolar absorptivity Molar Absorptivity, e = A/ c l A= absorbance, c = sample concentration in moles/liter l = length of light path through the sample in cm