39. Solving a chemistry problem
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39. Solving a chemistry problem
9. Determine the concentration (mol / l and mg / l) of vitamin D3 in the solution, if the optical density of the analyzed solution was 0.5, and the standard 2 * 10-4 M solution was 0.376 at 265 nm. Determine the molar and specific light extinction coefficients of vitamin D3 at 265 nm in a cuvette with l = 2 cm. M (vitamin D3) = 384.7 g/mol.
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