(8) 4. Расставьте коэффициенты в уравнениях реакции и укажите тип реакц A) H2 + Fe2O3 Fe + H₂O Б) N2 H₂ → NH3 + B)Na + ZnO-Zn + Na2O Г) HCl + AgNO3 AgCl + HNO3 (8)​
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