139. Задачка по химии №013 912

12. Two weighed portions of SiHCl3 weighing 10.00 g, one of which was injected with 0.01 μg of Ta205, decomposed with hydrofluoric acid, added a solution of rhodamine 6G and benzene. The fluorescence intensity of benzene extracts was measured relative to a zero solution containing all components except tantalum.
Calculate the mass fraction (%) of tantalum in SiHCb according to the following data:
Option 1
Iх -Iо 12
I * + l - Iо 18
THERE IS A TYPE TYPE IN THE CONDITION OF THE PROBLEM. THE SOLUTION SPECIFIED AND EXPLAINED THIS TYPOGRAPH.

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