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Chromium (III) forms a complex with diphenylcarbazide whose molar absorptivity is 4.17x10^4 at 540 nm. Calculate the path length (in cm) needed to cause a 2.56×10^-6 M solution of the complex to have the same absorbance as a 7.68×10^-6 M solution measured in a 1.00-cm cell.