37. Solving a chemistry problem

37. Solving a chemistry problem

194. The intensity of the luminescence of a solution of 0.15 g of selenium was 0.25 conventional units. After adding a standard solution containing 50 μg of gallium, the luminescence intensity increased to 0.75 conventional units. Determine the gallium content in selenium (in%) if the luminescence intensity of the blank solution is 0.05 conventional units.

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