79 Решение задачки по химии №07 909

1. Calculate the mass fraction of Al2O3 in silicate, if a sample of 1.022 g of it was transferred into a solution, 25.0 ml of a 0.2151 M solution of Trilon B was added, and 9.85 ml of a 0.1015 M solution of zinc sulfate was used to titrate the excess of the latter.

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