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2 PbO + 2 SO2 = 2 PbS + 3 O2
Fe + H2O = Fe3O4 + H2 =>
3 Fe + 4 H2O = Fe3O4 + 4 H2
Fe(NO3)3 + (NH4)2CO3 = Fe2(CO3)3 + NH4NO3 =>
2 Fe(NO3)3 + 3(NH4)2CO3 = Fe2(CO3)3 + 6 NH4NO3
CaCl2 + Na2CO3 = CaCO3 + NaCl =>
CaCl2 + Na2CO3 = CaCO3 + 2 NaCl
CO + H2O + SO3 = C6H6S2 + O2 =>
12 CO + 6 H2O + 4 SO3 = 2 C6H6S2 + 15 O2
K3[Fe(C2O4)3] + NaOH = Fe(OH)3 + Na2C2O4 + K2C2O4 =>
2 K3[Fe(C2O4)3] + 6 NaOH = 2 Fe(OH)3 + 3 Na2C2O4 + 3 K2C2O4
Ag2O3 + CO = Ag + CO2 =>
Ag2O3 + 3 CO = 2 Ag + 3 CO2
H2SO4 + NaCl = HCl + Na2SO4 =>
H2SO4 + 2 NaCl = 2 HCl + Na2SO4
C9H11NO2 + H2 = C9H13N + O2 =>
C9H11NO2 + H2 = C9H13N + O2
C8CH18 + O2 = CO2 + H2O =>
2 C8CH18 + 27 O2 = 18 CO2 + 18 H2O
C7H13NO2 + ClH4NO + HKO = C7H14N2O2 + KCl + H2O =>
C7H13NO2 + ClH4NO + HKO = C7H14N2O2 + KCl + 2 H2O
Na2O + C = Na + CO =>
Na2O + C = 2 Na + CO
BaSO3 + H{+} = Ba{2+} + SO2 + H2O =>
BaSO3 + 2 H{+} = Ba{2+} + SO2 + H2O
Mg(ClO3)2 + K2SO4 = MgSO4 + KClO3 =>
Mg(ClO3)2 + K2SO4 = MgSO4 + 2 KClO3
FeCl3 + NH3 + H2O = Fe(OH)3 + (NH4)3Cl3 =>
FeCl3 + 3 NH3 + 3 H2O = Fe(OH)3 + (NH4)3Cl3
Al + V2O5 = Al2O3 + V =>
10 Al + 3 V2O5 = 5 Al2O3 + 6 V
Na2O + Mg = MgO + Na =>
Na2O + Mg = MgO + 2 Na
PbBr2 = Pb + Br2 =>
PbBr2 = Pb + Br2
CaCl2 + Na2CO3 = CaCO3 + NaCl =>
CaCl2 + Na2CO3 = CaCO3 + 2 NaCl
BaCl2(l) + NaSO4(l) = BaSO4(s) + NaCl2(l) =>
BaCl2(l) + NaSO4(l) = BaSO4(s) + NaCl2(l)
KF + FeCl3 = F2 + FeCl2 + KCl =>
2 KF + 2 FeCl3 = F2 + 2 FeCl2 + 2 KCl
K2CO3 + HNO3 = KNO3 + H2O + CO2 =>
K2CO3 + 2 HNO3 = 2 KNO3 + H2O + CO2
KMnO4 + H2O + NaHSO3 = MnO2 + NaHSO4 + KOH =>
2 KMnO4 + H2O + 3 NaHSO3 = 2 MnO2 + 3 NaHSO4 + 2 KOH
NaCl + (NH4)(NO3) = NaNO3 + NH4Cl =>
NaCl + (NH4)(NO3) = NaNO3 + NH4Cl
CH4 + CCl4 = C2H4Cl4 =>
CH4 + CCl4 = C2H4Cl4
Rb + H2O = RbOH + H2 =>
2 Rb + 2 H2O = 2 RbOH + H2
KClO3(c) = KCl(aq) + O2(g) =>
2 KClO3(c) = 2 KCl(aq) + 3 O2(g)
NiSO4 + Cu(NO3)2 = Ni(NO3)2 + CuSO4 =>
NiSO4 + Cu(NO3)2 = Ni(NO3)2 + CuSO4
Cd + I2 = Cd2I =>
4 Cd + I2 = 2 Cd2I
CH26 + O2 = CO2 + H2O =>
2 CH26 + 15 O2 = 2 CO2 + 26 H2O
Na2SO4*10H2O = Na2SO4 + H2O =>
Na2SO4*10H2O = Na2SO4 + 10 H2O
H + Br + O = HBrO =>
H + Br + O = HBrO
Zn + S = ZnS =>
Zn + S = ZnS
Al(OH)3 + Ca3(PO4)2 = Al(PO4)2 + Ca3(OH)3 =>
Al(OH)3 + Ca3(PO4)2 = Al(PO4)2 + Ca3(OH)3
Al2(CO3)3(s) = Al2O3(s) + CO2(g) =>
Al2(CO3)3(s) = Al2O3(s) + 3 CO2(g)
H2AsO4 + H2S = S + As2S3 + H2O =>
2 H2AsO4 + 6 H2S = 3 S + As2S3 + 8 H2O
Cl2(s) + NaBr(aq) = NaCl(aq) + Br2(g) =>
Cl2(s) + 2 NaBr(aq) = 2 NaCl(aq) + Br2(g)
Fe(NO3)3 + (NH4)2CO3 = Fe2(CO3)3 + NH4NO3 =>
2 Fe(NO3)3 + 3(NH4)2CO3 = Fe2(CO3)3 + 6 NH4NO3
CrO2 + NH3 = Cr2O3 + N2 + H2O =>
6 CrO2 + 2 NH3 = 3 Cr2O3 + N2 + 3 H2O
Cu(OH)2 + NH4OH = [Cu(NH3)4](OH)2 + H2O =>
Cu(OH)2 + 4 NH4OH = [Cu(NH3)4](OH)2 + 4 H2O
HCH3COO + H2O = H3O{+} + CH3COO{-} =>
HCH3COO + H2O = H3O{+} + CH3COO{-}
Fe(s) + H2SO4(aq) = Fe(SO4)2(aq) + H2(g) =>
Fe(s) + 2 H2SO4(aq) = Fe(SO4)2(aq) + 2 H2(g)
Na + I2 = NaI =>
2 Na + I2 = 2 NaI
Fe(HO)2 = FeO + H2O =>
Fe(HO)2 = FeO + H2O
FeOHCl2 + NaOH = Fe(OH)3 + NaCl =>
FeOHCl2 + 2 NaOH = Fe(OH)3 + 2 NaCl
C + O = C2O4 =>
2 C + 4 O = C2O4
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
VSO4 + KMnO4 + H2O = HVO3 + MnSO4 + K2SO4 + H2SO4 =>
10 VSO4 + 6 KMnO4 + 6 H2O = 10 HVO3 + 6 MnSO4 + 3 K2SO4 + H2SO4
SO2 + Na2O = Na2SO3 =>
SO2 + Na2O = Na2SO3
CHO + OH = COO + H2O =>
CHO + 3 OH = COO + 2 H2O
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