19. Solving a chemistry problem

6. Calculate the content of uranium in the solution (µg/cm3) according to the data of its determination by the luminescence method: 0.05 cm3 of the solution is evaporated and fused with 100 mg of a mixture of NaF and NaKCO3; the relative luminescence of the alloy was 38% of the luminescence of 16 standard sample prepared in the same way and containing 0.50 µg of uranium.