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4 K + O2 = 2 K2O
Al2O3 + NaOH = NaAlO2 + H2O =>
Al2O3 + 2 NaOH = 2 NaAlO2 + H2O
H2S + NaOH = Na2S + H2O =>
H2S + 2 NaOH = Na2S + 2 H2O
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
NaOH + Al2O3 + HF = Na3AlF6 + H2O =>
6 NaOH + Al2O3 + 12 HF = 2 Na3AlF6 + 9 H2O
HClO4 + NaOH = NaClO4 + H2O =>
HClO4 + NaOH = NaClO4 + H2O
CaF2 + SiO2 + H2SO4 = CaSO4 + SiF4 + H2O =>
2 CaF2 + SiO2 + 2 H2SO4 = 2 CaSO4 + SiF4 + 2 H2O
Li + H3PO4 = Li3PO4 + H2 =>
6 Li + 2 H3PO4 = 2 Li3PO4 + 3 H2
Na2CO3 + HCl = NaCl + H2O + CO2 =>
Na2CO3 + 2 HCl = 2 NaCl + H2O + CO2
CH3(CH2)6CH3 + O2 = CO2 + H2O =>
2 CH3(CH2)6CH3 + 25 O2 = 16 CO2 + 18 H2O
C4H10 + O2 = CO2 + H2O =>
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
ZnO + CO2 = ZnCO3 =>
ZnO + CO2 = ZnCO3
Fe2O3 + H2 = Fe + H2O =>
Fe2O3 + 3 H2 = 2 Fe + 3 H2O
Mg + CuO = MgO + Cu =>
Mg + CuO = MgO + Cu
Na2O + H2O = NaOH =>
Na2O + H2O = 2 NaOH
H2SO4 + KOH = K2SO4 + H2O =>
H2SO4 + 2 KOH = K2SO4 + 2 H2O
Al + I2 = AlI3 =>
2 Al + 3 I2 = 2 AlI3
I2 + CuCl2 + H2O = CuCl + HIO3 + HCl =>
I2 + 10 CuCl2 + 6 H2O = 10 CuCl + 2 HIO3 + 10 HCl
Na2S + H2SO4 = Na2SO4 + H2S =>
Na2S + H2SO4 = Na2SO4 + H2S
Ag + S = Ag2S =>
2 Ag + S = Ag2S
As2O3 + HCl + KMnO4 = As2O5 + MnCl + KCl + H2O =>
3 As2O3 + 4 HCl + 2 KMnO4 = 3 As2O5 + 2 MnCl + 2 KCl + 2 H2O
MgO + HCl = MgCl2 + H2O =>
MgO + 2 HCl = MgCl2 + H2O
CH3POCl2 + C2H5OH + C8H19NS + (C2H5)3N = C8H18NS(CH3)P(O)(OC2H5)*HCl + (C2H5)3N*HCl =>
CH3POCl2 + C2H5OH + C8H19NS + (C2H5)3N = C8H18NS(CH3)P(O)(OC2H5)*HCl + (C2H5)3N*HCl
C6H12O6 + O2 = CO2 + H2O =>
C6H12O6 + 6 O2 = 6 CO2 + 6 H2O
Ba(HCO3)2 = BaCO3 + H2O + CO2 =>
Ba(HCO3)2 = BaCO3 + H2O + CO2
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
C5H10O2 + H2O = C4H4O2 + CH3CH2OH =>
2 C5H10O2 + H2O = C4H4O2 + 3 CH3CH2OH
Zn + HNO3 = Zn(NO3)2 + H2 =>
Zn + 2 HNO3 = Zn(NO3)2 + H2
BaCl2 + H2SO4 = BaSO4 + HCl =>
BaCl2 + H2SO4 = BaSO4 + 2 HCl
HBr + NaOH = NaBr + H2O =>
HBr + NaOH = NaBr + H2O
KPO3 = K2O + P2O5 =>
2 KPO3 = K2O + P2O5
N2O + H2 = N2H4 + H2O =>
N2O + 3 H2 = N2H4 + H2O
V + KOH + O2 = K3VO4 + H2O =>
4 V + 12 KOH + 5 O2 = 4 K3VO4 + 6 H2O
Zn + N2 = Zn3N2 =>
3 Zn + N2 = Zn3N2
Al2O3 + SO3 = Al2(SO4)3 =>
Al2O3 + 3 SO3 = Al2(SO4)3
P4 + Cl2 = PCl3 =>
P4 + 6 Cl2 = 4 PCl3
CaO + HCl = CaCl2 + H2O =>
CaO + 2 HCl = CaCl2 + H2O
S + O2 = SO3 =>
2 S + 3 O2 = 2 SO3
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
H3PO4 + Ba(OH)2 = Ba3(PO4)2 + H2O =>
2 H3PO4 + 3 Ba(OH)2 = Ba3(PO4)2 + 6 H2O
Al2O3 + SO3 = Al2(SO4)3 =>
Al2O3 + 3 SO3 = Al2(SO4)3
NaHCO3 = Na2CO3 + CO2 + H2O =>
2 NaHCO3 = Na2CO3 + CO2 + H2O
EDTA + Ca(OH)2 = Ca(EDTA) + (OH)2 =>
EDTA + Ca(OH)2 = Ca(EDTA) + (OH)2
H2SO4 + NaOH = Na2SO4 + H2O =>
H2SO4 + 2 NaOH = Na2SO4 + 2 H2O
NaHCO3 = Na2CO3 + CO2 + H2O =>
2 NaHCO3 = Na2CO3 + CO2 + H2O
Fe2O3 + CO = Fe3O4 + CO2 =>
3 Fe2O3 + CO = 2 Fe3O4 + CO2
K2O + H2O = KOH =>
K2O + H2O = 2 KOH
Zn + S = ZnS =>
Zn + S = ZnS
CaCO3 + HOOCCOOH = (C2O4)2Ca2 + H2CO3 =>
2 CaCO3 + 2 HOOCCOOH = (C2O4)2Ca2 + 2 H2CO3
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