September 2021 0 3 Report
укажите какие реакции являются окислительно-восстановительными,УКАЖИТЕСТЕПЕНЬ ОКИСЛЕНИЯ...Zn+H2So4=ZnSO4+H2; CaO+HNO3=CANO3+H2O; P+O2=P2O5; Li+O2+Li2O;  Li+H2=LiH; пожалуйста
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