124. Задачка по химии №012 467

12. A 1.0 g sample of alloy steel contains manganese. After manganese was oxidized to manganese acid and the resulting solution was diluted to 500 ml, the absorption at a wavelength of 540 nm in a cuvette with a layer thickness of 2.0 cm was found to be 0.68. What is the percentage of manganese in steel, if at λ=540 nm ελMn=3000.

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