40. Решение задачки по химии №22

5. What quantity of zinc ore containing 4.5% zinc sulfide must be processed to obtain 10,000 tons of zinc if, as a result of ore flotation, a concentrate containing 40% zinc is obtained with a degree of extraction of 85%, and the yield of zinc in the process of processing the concentrate into zinc oxide, its reduction and distillation of the metal is 92%.

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