4. Calculate the determined minimum for the photoelectrocolorimetric analysis of iron (in mg/cm3) with sulfosalicylic acid in ammonia medium. The thickness of the absorbing layer is l= 1 cm, the minimum volume of the colored solution in the flask is 15.00 cm3. The average value of the molar coefficient of light absorption of the complex is 5500. The minimum optical density measured by the device Amine=0.01.

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