Ответ:
4Na + O2 → 2Na2O
4 P + 5 O2 → 2 P2O5
Zn + P = Zn3P2
2 Cr + 3 Cl2 → 2 CrCl3
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Ответ:
4Na + O2 → 2Na2O
4 P + 5 O2 → 2 P2O5
Zn + P = Zn3P2
2 Cr + 3 Cl2 → 2 CrCl3