18. Solving a chemistry problem
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18. Solving a chemistry problem
5. The molar light absorption coefficient of copper (II) dithizonate in carbon tetrachloride at λeff = 550 nm is 4.52*10^4. From a sample of the alloy weighing 0.1000 g, 250 ml of a solution of dithizonate in CCl4 is obtained and the optical density of 0.435 is measured in a cuvette l = 5.0 cm. The mass fraction of copper (%) that can be determined with dithizone is
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