The extinction coefficient for FD&C Blue Dye #1 is 138,500 cm-L/mol at 630 nm. A chemist collected the following data at 630 nm. She also found that the absorbance of an FD&C Blue Dye #1 solution of unknown concentration was 0.565. Use your graphing calculator to generate a standard curve from this data set, and use it to determine the concentration of the unknown solution. Concentration of Blue Dye (M) 6.35x10-7 1.23x10-6 3.84x10-6 5.68x10-6 Absorbance @ 630 nm 0.088 0.160 0.541 0.787

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