2. The molar absorption coefficients of quinoline complexes of cobalt and nickel are equal: λ= 365 nm ελ Co=3529 and ελ Ni=3228; A=0.724;
λ= 700 nm ελ Co=428.9 and ελ Ni=0.0; A=0.0710. Calculate the concentration of cobalt and nickel in the solution. Cuvette l=1.0 cm.

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