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Fe(OH)2 + 2 H2CO3 = Fe(HCO3)2 + 2 H2O
H2S + Fe2O3 = FeS + S + H2O =>
3 H2S + Fe2O3 = 2 FeS + S + 3 H2O
CaCO3 + Zn(HCO3)2 = Ca(HCO3)2 + ZnCO3 =>
CaCO3 + Zn(HCO3)2 = Ca(HCO3)2 + ZnCO3
MgCl2(aq) + KNO3(aq) = Mg(NO3)2(aq) + KCl(s) =>
MgCl2(aq) + 2 KNO3(aq) = Mg(NO3)2(aq) + 2 KCl(s)
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
C57H104O6 + NaOH = C18H33NaO2 + C3H8O3 =>
C57H104O6 + 3 NaOH = 3 C18H33NaO2 + C3H8O3
Pb + Na = PbNa =>
Pb + Na = PbNa
PF5 = P4 + F2 =>
4 PF5 = P4 + 10 F2
HClO + Ca = Ca(ClO)2 + H =>
2 HClO + Ca = Ca(ClO)2 + 2 H
Br + H2SO4 = HBr + SO4 =>
2 Br + H2SO4 = 2 HBr + SO4
Al2(SO4)3 + Ca(OH)2 = Al(OH)3 + CaSO4 =>
Al2(SO4)3 + 3 Ca(OH)2 = 2 Al(OH)3 + 3 CaSO4
CuO + Fe = Fe2O3 + Cu =>
3 CuO + 2 Fe = Fe2O3 + 3 Cu
H2SO4(aq) + NaNO2(aq) = HNO2(aq) + Na2SO4(aq) =>
H2SO4(aq) + 2 NaNO2(aq) = 2 HNO2(aq) + Na2SO4(aq)
Pb + PbO2 + H2SO4 = PbSO4 + H2O =>
Pb + PbO2 + 2 H2SO4 = 2 PbSO4 + 2 H2O
Si + HCl = SiCl4 + H2 =>
Si + 4 HCl = SiCl4 + 2 H2
K(OH) + H2SO3 = K2(SO3) + H2O =>
2 K(OH) + H2SO3 = K2(SO3) + 2 H2O
NaHCO3(s) + H2SO4(aq) = Na2SO4(aq) + H2O(l) + CO2(g) =>
2 NaHCO3(s) + H2SO4(aq) = Na2SO4(aq) + 2 H2O(l) + 2 CO2(g)
BaO + Fe2O3 = BaFe12O19 =>
BaO + 6 Fe2O3 = BaFe12O19
Na2SO3 + H2O = NaHSO3 + NaOH =>
Na2SO3 + H2O = NaHSO3 + NaOH
(NH4)3PO4(aq) + NaOH(aq) = Na3PO4(aq) + NH4OH(aq) =>
(NH4)3PO4(aq) + 3 NaOH(aq) = Na3PO4(aq) + 3 NH4OH(aq)
Cu + H(SO4) = Cu(SO4) + H2O + SO2 =>
3 Cu + 4 H(SO4) = 3 Cu(SO4) + 2 H2O + SO2
C2H5OH + Br2 = C2H5OBr + HBr =>
C2H5OH + Br2 = C2H5OBr + HBr
CO + NaOH = CO2 + NaH =>
CO + NaOH = CO2 + NaH
Fe{3+} + Br{-} = Fe + Br =>
Fe{3+} + 3 Br{-} = Fe + 3 Br
Li + H2SO4 = LiH2SO4 =>
Li + H2SO4 = LiH2SO4
Fe + Sn = Fe2Sn3 =>
2 Fe + 3 Sn = Fe2Sn3
PbI2 + H2O = PbO + HI =>
PbI2 + H2O = PbO + 2 HI
CH3CHO = CH4 + CO =>
CH3CHO = CH4 + CO
Br + NaOH = NaBr + NaOBr + H2O =>
2 Br + 2 NaOH = NaBr + NaOBr + H2O
K2S + O2 = K2SO4 =>
K2S + 2 O2 = K2SO4
H3PO4 + Ba(OH)2 = Ba3(PO4)2 + H2O =>
2 H3PO4 + 3 Ba(OH)2 = Ba3(PO4)2 + 6 H2O
Pb + NH4OH = PbNH4 + OH =>
Pb + NH4OH = PbNH4 + OH
K2(SO4) + Fe2(SO4)3 = K(SO4) + Fe(SO4) =>
K2(SO4) + Fe2(SO4)3 = 2 K(SO4) + 2 Fe(SO4)
C7H14O2(l) + O2(g) = CO2(g) + H2O(g) =>
2 C7H14O2(l) + 19 O2(g) = 14 CO2(g) + 14 H2O(g)
Zn(NO3)2 + KMnO4 = Zn(MnO4)2 + KNO3 =>
Zn(NO3)2 + 2 KMnO4 = Zn(MnO4)2 + 2 KNO3
Fe + NaOCl + H2O = Fe2O3 + Na2O + HCl =>
4 Fe + 6 NaOCl + 3 H2O = 2 Fe2O3 + 3 Na2O + 6 HCl
SnCl4 + O2 = SnO2 + Cl2 =>
SnCl4 + O2 = SnO2 + 2 Cl2
C6H12O6 + NO3{-} = HCO3{-} + N2 + H{+} + H2O =>
5 C6H12O6 + 24 NO3{-} = 30 HCO3{-} + 12 N2 + 6 H{+} + 12 H2O
NiCl2 + Na2(CO3) = NiCO3 + NaCl =>
NiCl2 + Na2(CO3) = NiCO3 + 2 NaCl
MgCl2 + Na(MnO4) = NaCl + Mg(MnO4)2 =>
MgCl2 + 2 Na(MnO4) = 2 NaCl + Mg(MnO4)2
NH4(OH)2 + H3PO4 = (NH4)3(PO4)2 + H2O =>
3 NH4(OH)2 + 2 H3PO4 = (NH4)3(PO4)2 + 6 H2O
CuCl2H2S = CuS + HCl =>
CuCl2H2S = CuS + 2 HCl
Mg(NO3)2 + KNO3 = MgK + NO3 =>
Mg(NO3)2 + KNO3 = MgK + 3 NO3
NaHSO4 + CaCO3 = Na2CO3 + Ca(HSO4)2 =>
2 NaHSO4 + CaCO3 = Na2CO3 + Ca(HSO4)2
HONH2 + HCl = HONH3 + Cl =>
HONH2 + HCl = HONH3 + Cl
BaSO4 = BaO + SO2 + O2 =>
2 BaSO4 = 2 BaO + 2 SO2 + O2
S + HNO3 = H2SO4 + NO2 + H2 =>
S + 4 HNO3 = H2SO4 + 4 NO2 + H2
H(g) + O(g) = H2O(l) =>
2 H(g) + O(g) = H2O(l)
Li2 + SO3 = Li2SO3 =>
Li2 + SO3 = Li2SO3
NaOH(aq) + H2S(aq) = Na2S(s) + H2O(l) =>
2 NaOH(aq) + H2S(aq) = Na2S(s) + 2 H2O(l)
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