24. Solving a chemistry problem

3. The optical density of aluminum with chromasurol measured at λ=545 nm in a cuvette with a layer thickness of 1 mm is 0.75. For the reaction, 4.0 cm3 of 5*10-5 mol/dm3 solution of chromasurol was taken and brought to 50.0 cm3. Calculate the value of the molar absorption coefficient of the resulting solution at λ=545 nm.