2Zn + O2 = 2ZnO

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2Zn + O2 = 2ZnO
2Fe + 3Сl2 = 2FeCl3
2Al + 3S = Al2S3
2H2 + O2 = 2H2O
2Al(OH)3 = Al2O3 + 3H2O
2NH3 = N2 + 3H2
CaCO3 = CaO + CO2
C + H2O =CO + H2
Zn + H2O = ZnO + H2
Mg + H2SO4 = MgSO4 + H2
Fe + CuSO4= Cu + FeSO4
2Na + 2HCl = 2NaCl + H2
HCl + NaOH = NaCl + H2O
H2SO4 + 2LiOH = Li2SO4 + 2H2O
AgNO3 + HCl = AgCl + HNO3
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