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Fe2O3 + 3 H2O = 2 Fe(OH)3
H2SO4 + KOH = K2SO4 + H2O =>
H2SO4 + 2 KOH = K2SO4 + 2 H2O
H2SO4 + NaHCO3 = Na2SO4 + CO2 + H2O =>
H2SO4 + 2 NaHCO3 = Na2SO4 + 2 CO2 + 2 H2O
Pb(NO3)2 = PbO + NO2 + O2 =>
2 Pb(NO3)2 = 2 PbO + 4 NO2 + O2
SO2 + NaOH = Na2SO3 + H2O =>
SO2 + 2 NaOH = Na2SO3 + H2O
AgI + Na2S = Ag2S + NaI =>
2 AgI + Na2S = Ag2S + 2 NaI
Ca + S = CaS =>
Ca + S = CaS
Fe + H2SO4 = Fe2(SO4) + H2 =>
2 Fe + H2SO4 = Fe2(SO4) + H2
CUSO4 + Fe = CU + Fe2(SO4)3 =>
3 CUSO4 + 2 Fe = 3 CU + Fe2(SO4)3
Na + Cl2 = NaCl =>
2 Na + Cl2 = 2 NaCl
Ca10F2(PO4)6 + H2SO4 = Ca(H2PO4)2 + CaSO4 + HF =>
Ca10F2(PO4)6 + 7 H2SO4 = 3 Ca(H2PO4)2 + 7 CaSO4 + 2 HF
CUSO4 + Fe = CU + FeSO4 =>
CUSO4 + Fe = CU + FeSO4
NH3 + O2 = NO2 + H2O =>
4 NH3 + 7 O2 = 4 NO2 + 6 H2O
Al + Cl = AlCl =>
Al + Cl = AlCl
H2S + O2 = S + H2O =>
2 H2S + O2 = 2 S + 2 H2O
Zn + HCl = ZnHCl2 + H2 =>
2 Zn + 4 HCl = 2 ZnHCl2 + H2
BeO + HCl = BeCl + HO =>
BeO + HCl = BeCl + HO
C2H4(g) + O2(g) = CO2(g) + H2O(g) =>
C2H4(g) + 3 O2(g) = 2 CO2(g) + 2 H2O(g)
Ca3(PO4)2 + H2SO4 = CaSO4 + Ca(H2PO4)2 =>
Ca3(PO4)2 + 2 H2SO4 = 2 CaSO4 + Ca(H2PO4)2
CaCl2 + Hg(NO3)2 = Ca(NO3)2 + HgCl2 =>
CaCl2 + Hg(NO3)2 = Ca(NO3)2 + HgCl2
AlCl3 + OH = Al(OH)4 + Cl =>
AlCl3 + 4 OH = Al(OH)4 + 3 Cl
Al + HCl = AlCl + H =>
Al + HCl = AlCl + H
SO2 + NO2 = SO3 + NO =>
SO2 + NO2 = SO3 + NO
NH4 + O2 = NO + H2O =>
2 NH4 + 3 O2 = 2 NO + 4 H2O
AG + Cl3 = AGCl =>
3 AG + Cl3 = 3 AGCl
Li(s) + N2(g) = Li3N(s) =>
6 Li(s) + N2(g) = 2 Li3N(s)
AG + Cl = AGCl =>
AG + Cl = AGCl
ZnO + HCl = ZnCl2 + H2O =>
ZnO + 2 HCl = ZnCl2 + H2O
Al + O2 = Al2O3 =>
4 Al + 3 O2 = 2 Al2O3
Al(OH)4 + So4 = So4(OH) + Al3 =>
3 Al(OH)4 + 12 So4 = 12 So4(OH) + Al3
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
Al + HCl = AlCl + H2 =>
2 Al + 2 HCl = 2 AlCl + H2
Al(OH)4 + SO4 = SO4(OH) + Al3 =>
3 Al(OH)4 + 12 SO4 = 12 SO4(OH) + Al3
K + H2O = KOH + H2 =>
2 K + 2 H2O = 2 KOH + H2
H2SO4 + NaOH = (Na)2SO4 + H2O =>
H2SO4 + 2 NaOH = (Na)2SO4 + 2 H2O
C + H2 = CH4 =>
C + 2 H2 = CH4
Al(OH)4 + SO4 = SO4(OH) + Al3 =>
3 Al(OH)4 + 12 SO4 = 12 SO4(OH) + Al3
PbCO3(s) = PbO(s) + CO2(g) =>
PbCO3(s) = PbO(s) + CO2(g)
C2H4 + O2 = C + H2O =>
C2H4 + O2 = 2 C + 2 H2O
Cu + H2SO4 = CuSO4 + SO2 + H2O =>
Cu + 2 H2SO4 = CuSO4 + SO2 + 2 H2O
N + H2 = NH3 =>
2 N + 3 H2 = 2 NH3
Zn + HNO3 = Zn(NO3)2 + NH4NO3 + H2O =>
4 Zn + 10 HNO3 = 4 Zn(NO3)2 + NH4NO3 + 3 H2O
H2S + SO2 = H2O + S =>
2 H2S + SO2 = 2 H2O + 3 S
C2H4 + O2 = CO2 + H2O =>
C2H4 + 3 O2 = 2 CO2 + 2 H2O
C2H4 + O2 = CO + H2O =>
C2H4 + 2 O2 = 2 CO + 2 H2O
H2SO4 + NaOH = (Na)2SO4 + H2O =>
H2SO4 + 2 NaOH = (Na)2SO4 + 2 H2O
Bi2S3 + HCl = BiCl3 + H2S =>
Bi2S3 + 6 HCl = 2 BiCl3 + 3 H2S
NH3 + O2 = N2 + H2O =>
4 NH3 + 3 O2 = 2 N2 + 6 H2O
C7H8O2(l) + O2(g) = CO2(g) + H2O(g) =>
C7H8O2(l) + 8 O2(g) = 7 CO2(g) + 4 H2O(g)
SeCl6 + O2 = SeO2 + Cl2 =>
SeCl6 + O2 = SeO2 + 3 Cl2
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