Odpowiedź:
C + O₂ --> CO₂
4Na + C --> Na₄C
2Fe + 3S --> Fe₂S₃
2Zn + O₂ --> 2ZnO
2Fe + 3F₂ --> 2FeF₃
2B + 3S --> B₂S₃
Ca + S --> CaS
4Al + 3O₂ --> 2Al₂O₃
4Mn + 7O₂ --> 2Mn₂O₇
2K + Cl₂ --> 2KCl
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Odpowiedź:
C + O₂ --> CO₂
4Na + C --> Na₄C
2Fe + 3S --> Fe₂S₃
2Zn + O₂ --> 2ZnO
2Fe + 3F₂ --> 2FeF₃
2B + 3S --> B₂S₃
Ca + S --> CaS
4Al + 3O₂ --> 2Al₂O₃
4Mn + 7O₂ --> 2Mn₂O₇
2K + Cl₂ --> 2KCl