5. Determine the molar coefficient of light absorption of potassium chromate if the relative optical density of a 1.35*10-5 M potassium chromate solution, measured at a wavelength of 372.5 nm in a cuvette with a light-absorbing layer thickness of 2.3 cm in relation to a comparison solution containing 10-3 mol/l potassium chromate, was 1.38.

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