21. Решение задачи по химии №002 287
2. What is the composition of brass containing only copper, lead and zinc, if 0.5 g of its sample gives 0.0023 g of lead sulfate PbSO4 and 0.4108 g of ZnNH4PO4?
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Оплата и выдача товара осуществляются через партнёрскую платформу.