86. Решение задачки по химии №19

2. Calculate the mass concentration in terms of P2O5 of a mixture of 51.5 g of unevaporated and 10.5 g of evaporated extraction phosphoric acid. The concentration of unevaporated is 37.03% by mass (in terms of P2O5), the concentration of evaporated is 54.51% by mass (in terms of P2O5).

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