Расставьте коэффициенты, определите тип реакции: 1. Fe3O4 + H2  Fe + H2O
2. MnO2 + Al  Mn + Al2O3
3. Ca + HCl  CaCl2 + H2
4. NO + O2  NO2
5. H2S + O2  S + H2O
6. P + S → P2S3
7. Al + HCl → H2 + AlCl3
8. KMnO4 → K2MnO4 + O2 + MnO2
9. Zn + FeCl3 → Zn Cl2 + Fe
10. SO3 + NaOH → Na2SO4 + H2O
11. SO2 + O2 → SO3
12. HgO → Hg + O2
13. Na + H2O → NaOH + H2
14. LiOH + H3PO4 → Li3PO4 + H2O
15. K + H2O → KOH + H2
16. MgO + HCl → MgCl2 + H2O
17. KClO3 → KCl + O2
18. Fe + O2 → Fe2O3
19. Sn + HCl → SnCl2 + H2
20. PH3 → P + H2​
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