Ответ:
2Zn + O2 = 2ZnO
4Na + O2 = 2Na2O
4Al + 3O2 = 2Al2O3
2Ca + O2 = 2CaO
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Ответ:
2Zn + O2 = 2ZnO
4Na + O2 = 2Na2O
4Al + 3O2 = 2Al2O3
2Ca + O2 = 2CaO