В3.11-1 A sample of steel weighing 0.5000 g was dissolv

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Description

A sample of steel weighing 0.5000 g was dissolved in a flask with a capacity of 50.00 ml. Two samples of 20.00 ml were placed in flasks with a capacity of 50.00 ml. A solution containing 0.003000 g of vanadium was added to one flask. In both flasks, hydrogen peroxide was added and brought to the mark with water.
Calculate the mass fraction (%) of vanadium in the steel if the following optical densities were obtained by photometry of the solutions

Additional information

The task from the textbook on Analytical Chemistry, vol.2, Vasiliev

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