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Problem 1.4: A 13.50-mg sample of impure DPK was dissolved in 50.00mL acetonitrile and placed in a sample cell with a path length of 0.05cm.

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Problem 1.4: A 13.50-mg sample of impure DPK was dissolved in 50.00mL acetonitrile and placed in a sample cell with a path length of 0.05cm. The absorbance was found to be 0.513 at a wavelength of 272nm. What was the percent purity of the DPK sample? Hint: Use the molar absorptivity calculated in Problem 1.2

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