Ответ:
Объяснение:
1) 4
2) Na2O, Cl2O7, CaO, P2O5, H2O
3) 2Mg + O2 = 2MgO
2Zn + O2 = 2ZnO
N2 + O2 = 2NO
4P + 5O2 =2 P2O5
4) 3
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Verified answer
Ответ:
Объяснение:
1) 4
2) Na2O, Cl2O7, CaO, P2O5, H2O
3) 2Mg + O2 = 2MgO
2Zn + O2 = 2ZnO
N2 + O2 = 2NO
4P + 5O2 =2 P2O5
4) 3