34. Solving a chemistry problem

34. Solving a chemistry problem

5. The copper content in the semiconductor material is 1*10-6%. What minimum molar absorption coefficient should a copper complex compound have, in the form of which it is determined spectrophotometrically, if the sample weight should not exceed 1.0 g, the final volume of the measured solution should not be less than 5 cm3, the cuvette has l = 5 cm, the minimum optical value density. at which an accuracy of at least 10% is possible is 0.02?

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