October 2021 0 25 Report
Нужна срочно помощь, расставьте коэффициенты в следующих уравнениях, посчитайте сумму коэффициентов. 1) Введите сумму коэффициентов уравнения:серная кислота + гидроксид натрия= сульфат натрия + вода.
2) Fe2O3+ Al= Al2O3+ Fe
3)Mg+ H3PO4=Mg3(PO4)2 + H2
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