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2 ZnS + 3 O2 = 2 ZnO + 2 SO2
NH4OH + Mg = NH4Mg + OH =>
NH4OH + Mg = NH4Mg + OH
N2 + O2 = N2O5 =>
2 N2 + 5 O2 = 2 N2O5
CH3CHO + KMnO4 = CH3COOH + CH3COOK + MnO2 + KOH =>
3 CH3CHO + 2 KMnO4 = 2 CH3COOH + CH3COOK + 2 MnO2 + KOH
NH4OH + Mg = NH4Mg + OH =>
NH4OH + Mg = NH4Mg + OH
Fe + HNO3 = Fe(NO3)3 + H2O + NO2 =>
Fe + 6 HNO3 = Fe(NO3)3 + 3 H2O + 3 NO2
Ca(OH)2 + HNO3 = Ca(NO3)2 + H2O =>
Ca(OH)2 + 2 HNO3 = Ca(NO3)2 + 2 H2O
CaCl2 + H2SO4 = CaSO4 + HCl =>
CaCl2 + H2SO4 = CaSO4 + 2 HCl
Cu + O = CuO =>
Cu + O = CuO
SnI4 + H2O = SnO2 + HI =>
SnI4 + 2 H2O = SnO2 + 4 HI
CuO + Fe = FeO + Cu =>
CuO + Fe = FeO + Cu
Al + MgCl2 = AlCl3 + Mg =>
2 Al + 3 MgCl2 = 2 AlCl3 + 3 Mg
C6H5CH3 + CL2 = C6H5CH2CL + HCL =>
4 C6H5CH3 + 7 CL2 = 3 C6H5CH2CL + 11 HCL
NH4OH + Mg = MgOH + NH4 =>
NH4OH + Mg = MgOH + NH4
NH3 + H2SO4 = (NH4)2SO4 =>
2 NH3 + H2SO4 = (NH4)2SO4
C6H12O + Na2Cr2O72H2O + H2SO4 = C6H10O + Cr2(SO4)3 + H2O + Na2SO4 =>
68 C6H12O + Na2Cr2O72H2O + 4 H2SO4 = 68 C6H10O + Cr2(SO4)3 + 73 H2O + Na2SO4
CuO + Al = Al2O3 + Cu =>
3 CuO + 2 Al = Al2O3 + 3 Cu
CuSO4 + Na2SO3 + KI = CuI + K2SO4 + Na2S4O6 + NaI =>
6 CuSO4 + 10 Na2SO3 + 24 KI = 6 CuI + 12 K2SO4 + Na2S4O6 + 18 NaI
Na + HCl = H2 + NaCl =>
2 Na + 2 HCl = H2 + 2 NaCl
FeO + O2 = FeO3 =>
FeO + O2 = FeO3
H3BO3 + NaOH = Na3BO3 + H2O =>
H3BO3 + 3 NaOH = Na3BO3 + 3 H2O
Fe + HSO4 = Fe2(SO4)2 + H2O + SO2 =>
6 Fe + 8 HSO4 = 3 Fe2(SO4)2 + 4 H2O + 2 SO2
KNO3 + Na2CO3 = K2CO3 + NaNO3 =>
2 KNO3 + Na2CO3 = K2CO3 + 2 NaNO3
Zn + CuSO4 = ZnSO4 + Cu =>
Zn + CuSO4 = ZnSO4 + Cu
Cu + HNO3 = Cu(NO3)2 + NO + H2O =>
3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O
FeCl3 + NaOH = Fe(OH)3 + NaCl =>
FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl
NO2 + O2 + H2O = HNO3 =>
4 NO2 + O2 + 2 H2O = 4 HNO3
SiF4(s) + H2O(l) = H2SiF6(s) + SiO2(s) =>
3 SiF4(s) + 2 H2O(l) = 2 H2SiF6(s) + SiO2(s)
A2 + B2 = AB3 =>
A2 + 3 B2 = 2 AB3
Al + Fe2O3 = Al2O3 + Fe =>
2 Al + Fe2O3 = Al2O3 + 2 Fe
Fe + H2SO4 = Fe2(SO4)2 + H2O + SO2 =>
2 Fe + 4 H2SO4 = Fe2(SO4)2 + 4 H2O + 2 SO2
Fe2O3 + O2 = Fe2O5 =>
Fe2O3 + O2 = Fe2O5
C12H22O11 + O2 = CO2 + H2O =>
C12H22O11 + 12 O2 = 12 CO2 + 11 H2O
BaCl2(aq) + H2SO4(aq) = BaSO4(s) + HCl(aq) =>
BaCl2(aq) + H2SO4(aq) = BaSO4(s) + 2 HCl(aq)
Zn + CO2 = ZnO + CO =>
Zn + CO2 = ZnO + CO
H2O2 = H2O + O2 =>
2 H2O2 = 2 H2O + O2
Fe(OH)3 + H2SO4 = Fe2(SO4)3 + H2O =>
2 Fe(OH)3 + 3 H2SO4 = Fe2(SO4)3 + 6 H2O
NH3 + O = NO + H2O =>
2 NH3 + 5 O = 2 NO + 3 H2O
CoS + HCl + KClO3 = CoCl2 + KCl + S + H2O =>
3 CoS + 6 HCl + KClO3 = 3 CoCl2 + KCl + 3 S + 3 H2O
BaCl2 + AgNO3 = Ba(NO3)2 + AgCl =>
BaCl2 + 2 AgNO3 = Ba(NO3)2 + 2 AgCl
Al + H2SO4 = Al2(SO4)3 + H2 =>
2 Al + 3 H2SO4 = Al2(SO4)3 + 3 H2
Cr2(SO4)3 + KOH = K2SO4 + Cr(OH)3 =>
Cr2(SO4)3 + 6 KOH = 3 K2SO4 + 2 Cr(OH)3
NiCl2 + O2 = NiO + Cl2O5 =>
NiCl2 + 3 O2 = NiO + Cl2O5
HCLO3 + H2C2O4 = CLO2 + CO2 + H2O =>
2 HCLO3 + H2C2O4 = 2 CLO2 + 2 CO2 + 2 H2O
H2SO4 + KMnO4 + H2O2 = HMnO4 + KSO4 + H2O =>
2 H2SO4 + 2 KMnO4 + H2O2 = 2 HMnO4 + 2 KSO4 + 2 H2O
KClO4 = KCl + O2 =>
KClO4 = KCl + 2 O2
FeS2 + HNO3 = Fe(NO3)3 + H2SO4 + NO + H2O =>
FeS2 + 8 HNO3 = Fe(NO3)3 + 2 H2SO4 + 5 NO + 2 H2O
NaCl + AgNO3 = AgCl + NaNO3 =>
NaCl + AgNO3 = AgCl + NaNO3
Co(NO3)3 + (NH4)2S = Co2S3 + NH4NO3 =>
2 Co(NO3)3 + 3(NH4)2S = Co2S3 + 6 NH4NO3
Al(s) + KOH(aq) + H2O(aq) = K[Al(OH)4](aq) + H2(g) =>
2 Al(s) + 2 KOH(aq) + 6 H2O(aq) = 2 K[Al(OH)4](aq) + 3 H2(g)
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