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4 Fe + 3 O2 = 2 Fe2O3
Ca3(PO4)2(s) + H2SO4(aq) = CaSO4(s) + H3PO4(aq) =>
Ca3(PO4)2(s) + 3 H2SO4(aq) = 3 CaSO4(s) + 2 H3PO4(aq)
Fe + S = FeS2 =>
Fe + 2 S = FeS2
C3H8(g) + O2(g) = CO2(g) + H2O(g) =>
C3H8(g) + 5 O2(g) = 3 CO2(g) + 4 H2O(g)
FeCl3 + NaOH = Fe(OH)3 + NaCl =>
FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
FeCl3 + NaOH = Fe(OH)3 + NaCl =>
FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl
Pb + ZnCl2 = PbCl2 + Zn =>
Pb + ZnCl2 = PbCl2 + Zn
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
C3H7OH + O2 = CO2 + H2O =>
2 C3H7OH + 9 O2 = 6 CO2 + 8 H2O
Cd + AgNO3 = Cd(NO3)2 + Ag =>
Cd + 2 AgNO3 = Cd(NO3)2 + 2 Ag
HCOOH + Zn(OH)2 = Zn(COOH)2 + H2O =>
2 HCOOH + Zn(OH)2 = Zn(COOH)2 + 2 H2O
P4{-} + OH{-} + H2O = PH3 + H3PO2{-} =>
3 P4{-} + 8 OH{-} + 14 H2O = PH3 + 11 H3PO2{-}
NaHSO3 + KOH = KHSO3 + NaOH =>
NaHSO3 + KOH = KHSO3 + NaOH
Al(NO3)3 + HCl = AlH3 + NO3Cl =>
Al(NO3)3 + 3 HCl = AlH3 + 3 NO3Cl
KMnO4 + KOH = K2MnO4 + H2O + O =>
2 KMnO4 + 2 KOH = 2 K2MnO4 + H2O + O
Al + HNO3 = Al(NO3)3 + H2 =>
2 Al + 6 HNO3 = 2 Al(NO3)3 + 3 H2
ZnI2 + Ag = Zn + AgI =>
ZnI2 + 2 Ag = Zn + 2 AgI
C4H9OH + K = C4H9OK + H2 =>
2 C4H9OH + 2 K = 2 C4H9OK + H2
Al(OH)3 + H(C2H3O2) = Al(C2H3O2)3 + (HOH) =>
Al(OH)3 + 3 H(C2H3O2) = Al(C2H3O2)3 + 3(HOH)
Mg + Cl2 = MgCl2 =>
Mg + Cl2 = MgCl2
PO4 + AlCl3 = AlPO4 + Cl =>
PO4 + AlCl3 = AlPO4 + 3 Cl
Al + O2 = Al2O3 =>
4 Al + 3 O2 = 2 Al2O3
(CH3COO)2Pb + Al2(SO4)3 = PbSO4 + Al(CH3COO)3 =>
3(CH3COO)2Pb + Al2(SO4)3 = 3 PbSO4 + 2 Al(CH3COO)3
AgClO3 = AgCl + O2 =>
2 AgClO3 = 2 AgCl + 3 O2
Li2S + AgNO3 = LiNO3 + Ag2S =>
Li2S + 2 AgNO3 = 2 LiNO3 + Ag2S
CO2 + H2O = C2H2 + O2 =>
4 CO2 + 2 H2O = 2 C2H2 + 5 O2
Na + O2 = Na2O =>
4 Na + O2 = 2 Na2O
FeCl3 + NaOH = Fe(OH)3 + NaCl =>
FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl
Zn(OH)2 + H = Zn + H2O =>
Zn(OH)2 + 2 H = Zn + 2 H2O
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
FeI2 + NaOH = Fe(OH)2 + NaI =>
FeI2 + 2 NaOH = Fe(OH)2 + 2 NaI
N2 + O2 = N2O =>
2 N2 + O2 = 2 N2O
NH3 + CuO = Cu + N2 + H2O =>
2 NH3 + 3 CuO = 3 Cu + N2 + 3 H2O
Fe(s) + CuCl2(aq) = FeCl2(aq) + Cu(s) =>
Fe(s) + CuCl2(aq) = FeCl2(aq) + Cu(s)
Al + HCl = AlCl3 + H2 =>
2 Al + 6 HCl = 2 AlCl3 + 3 H2
MnO2 + Sn(OH)4 = Mn(OH)2 + Sn(O2)2 =>
2 MnO2 + Sn(OH)4 = 2 Mn(OH)2 + Sn(O2)2
Fl + H2O = HFl + O3 =>
6 Fl + 3 H2O = 6 HFl + O3
Fe{2+} + Ce{4+} = Fe{3+} + Ce{3+} =>
Fe{2+} + Ce{4+} = Fe{3+} + Ce{3+}
P4 + H2 = PH3 =>
P4 + 6 H2 = 4 PH3
Na2B4O7 + HCl + H2O = H3BO3 + NaCl =>
Na2B4O7 + 2 HCl + 5 H2O = 4 H3BO3 + 2 NaCl
HOCl + KI = I2 + HCl + K2O =>
HOCl + 2 KI = I2 + HCl + K2O
Fe + HNO3 = Fe(NO3)2 + NO + H2O =>
3 Fe + 8 HNO3 = 3 Fe(NO3)2 + 2 NO + 4 H2O
Zn + HNO3 = Zn(NO3)2 + H2O + NH4NO3 =>
4 Zn + 10 HNO3 = 4 Zn(NO3)2 + 3 H2O + NH4NO3
CuSO4 + NaOH = Cu(OH)2 + Na2SO4 =>
CuSO4 + 2 NaOH = Cu(OH)2 + Na2SO4
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
KMnO4 + H2S + H2O = MnO2 + H2SO3 + KOH =>
2 KMnO4 + H2S + H2O = 2 MnO2 + H2SO3 + 2 KOH
S8(s) + O2(g) = SO2(g) =>
S8(s) + 8 O2(g) = 8 SO2(g)
C2H5OH + O2 = CO2 + H2O =>
C2H5OH + 3 O2 = 2 CO2 + 3 H2O
BiCl3 + HNO3 = Bi(NO3)5 + NO + HCl + H2O =>
3 BiCl3 + 17 HNO3 = 3 Bi(NO3)5 + 2 NO + 9 HCl + 4 H2O
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