08. Solving a chemistry problem
172. A sample of steel m = 0.1 g was dissolved in the appropriate acid, and the volume was brought to 100 ml. For the photometric reaction to nickel, 15 ml of solution was taken. The photometric reaction was carried out in a flask and the volume was adjusted to 50 ml. According to the calibration graph, it was found that the content of the component being determined in 50 ml is equal to 0.123 mg. Calculate the percentage of nickel in steel.
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