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2 FeS2 + 2 H2O = 2 FeO + 2 H2S + S2
NaH + BF3 = B2H6 + NaF =>
6 NaH + 2 BF3 = B2H6 + 6 NaF
CU + O = CUO =>
CU + O = CUO
Cu + HBr = CuBr + H2 =>
2 Cu + 2 HBr = 2 CuBr + H2
Cl2 + NaOH = NaCl + NaClO + H2O =>
Cl2 + 2 NaOH = NaCl + NaClO + H2O
NH3 + Cl2 = N2 + NH4Cl =>
8 NH3 + 3 Cl2 = N2 + 6 NH4Cl
K2Cr2O7 + HCl + C2H5OH = CrCl3 + KCl + C2H2OH + H2O =>
K2Cr2O7 + 8 HCl + 2 C2H5OH = 2 CrCl3 + 2 KCl + 2 C2H2OH + 7 H2O
Na2S2O3 + KMnO4 + H2SO4 = Na2SO4 + MnSO4 + K2SO4 + H2O =>
5 Na2S2O3 + 8 KMnO4 + 7 H2SO4 = 5 Na2SO4 + 8 MnSO4 + 4 K2SO4 + 7 H2O
CuCl2 + NH2S = CuS + NH2Cl2 =>
CuCl2 + NH2S = CuS + NH2Cl2
(a)Tl(s) + H2S(g) + O2(g) = Tl2S(s) + H2O(l) =>
4(a)Tl(s) + 2 H2S(g) + O2(g) = 2 Tl2S(s) + 2 H2O(l)
KMnO4 + NaOH + KNO2 = K2MnO4 + KNO3 + H2O + Na2MnO4 =>
2 KMnO4 + 2 NaOH + KNO2 = K2MnO4 + KNO3 + H2O + Na2MnO4
N2H4 + HBr = HN2H4 + Br =>
N2H4 + HBr = HN2H4 + Br
CuHPO4 + HCl = CuCl + H2PO4 =>
CuHPO4 + HCl = CuCl + H2PO4
NaI + H2O = HI + Na + O2 =>
4 NaI + 2 H2O = 4 HI + 4 Na + O2
Fe2O3*H2O + H2O = Fe(OH)3 =>
Fe2O3*H2O + 2 H2O = 2 Fe(OH)3
(NH4)2CO3 + Mg(SO) = NH4(SO) + Mg2CO3 =>
(NH4)2CO3 + 2 Mg(SO) = 2 NH4(SO) + Mg2CO3
Ag(NO3) + Co = Co(NO3) + Ag =>
Ag(NO3) + Co = Co(NO3) + Ag
H3AsO4 + SrS = S + H + Sr3(AsO4)2 =>
2 H3AsO4 + 3 SrS = 3 S + 6 H + Sr3(AsO4)2
Ca(OCl) + KI + HCl = I2 + CaCl + H2O + KCl =>
Ca(OCl) + 2 KI + 2 HCl = I2 + CaCl + H2O + 2 KCl
Co5 + Fe2 = CoFe7 =>
2 Co5 + 35 Fe2 = 10 CoFe7
Zn + Cr(OH)3 = Cr2(ZnO2)3 + H2 =>
3 Zn + 2 Cr(OH)3 = Cr2(ZnO2)3 + 3 H2
FeSO4 + CuSO4 = FeCu + SO4 =>
FeSO4 + CuSO4 = FeCu + 2 SO4
K2O + B2O3 = K3BO3 =>
3 K2O + B2O3 = 2 K3BO3
C2H6O + O2 = CO2 + H2O =>
C2H6O + 3 O2 = 2 CO2 + 3 H2O
C3H8NO5P + O2 = CO2 + N2 + H2O + H3PO4 =>
4 C3H8NO5P + 15 O2 = 12 CO2 + 2 N2 + 10 H2O + 4 H3PO4
Rb(OH)2 + HNO3 = Rb(NO3)2 + H2O =>
Rb(OH)2 + 2 HNO3 = Rb(NO3)2 + 2 H2O
H2SO4(ac) + NH4OH(ac) = (NH4)2SO4(ac) + H2O(l) =>
H2SO4(ac) + 2 NH4OH(ac) = (NH4)2SO4(ac) + 2 H2O(l)
C2H6O + O2 = CO2 + H2O =>
C2H6O + 3 O2 = 2 CO2 + 3 H2O
Li2S + P2S5 + LiCl = Li55P10S45Cl15 =>
20 Li2S + 5 P2S5 + 15 LiCl = Li55P10S45Cl15
Fe{2} + S{-2) = FeS =>
Fe{2} + S{-2) = FeS
Pb(CH3COO)2 + K2SO4 = PbSO4 + KCH3COO =>
Pb(CH3COO)2 + K2SO4 = PbSO4 + 2 KCH3COO
[Cu(H2O)4]SO4*H2O + NH3 = [Cu(NH3)]SO4*H2O + H2O =>
[Cu(H2O)4]SO4*H2O + NH3 = [Cu(NH3)]SO4*H2O + 4 H2O
CH3CH2OH + O2 = CO2 + H2O =>
CH3CH2OH + 3 O2 = 2 CO2 + 3 H2O
K2Cr2O7 + H2SO4 + Ba(NO2)2 = CrSO4 + K2SO4 + H2O + Ba(NO3)2 =>
K2Cr2O7 + 3 H2SO4 + 2 Ba(NO2)2 = 2 CrSO4 + K2SO4 + 3 H2O + 2 Ba(NO3)2
Cr2O7{-2} + H{+} + SO3{-2} = SO4{-2} + H2O + Cr{+3} =>
Cr2O7{-2} + 8 H{+} + 3 SO3{-2} = 3 SO4{-2} + 4 H2O + 2 Cr{+3}
Ca(H2PO4)2 + Ca(OH)2 = Ca5(OH)(PO4)3 + H2O =>
3 Ca(H2PO4)2 + 7 Ca(OH)2 = 2 Ca5(OH)(PO4)3 + 12 H2O
Fe{2} + S{-2) = FeS =>
Fe{2} + S{-2) = FeS
Fe3Cl + NaCO2 = NaCl + Fe3CO2 =>
Fe3Cl + NaCO2 = NaCl + Fe3CO2
CO2 + CH3OH = (CH3O)2CO + H2O =>
CO2 + 2 CH3OH = (CH3O)2CO + H2O
CaCO3 + K2Cr2O7 = CaCr2O7 + K2CO3 =>
CaCO3 + K2Cr2O7 = CaCr2O7 + K2CO3
Ca(CH3COO)2 + (NH4)3PO4 = (NH4)CH3COO + Ca3(PO4)2 =>
3 Ca(CH3COO)2 + 2(NH4)3PO4 = 6(NH4)CH3COO + Ca3(PO4)2
NaI + MnO2 + H2SO4 = MnSO4 + NaHSO4 + H2O + I2 =>
2 NaI + MnO2 + 3 H2SO4 = MnSO4 + 2 NaHSO4 + 2 H2O + I2
(NH4)2C2O4 + BaSO4 = (NH4)2SO4 + BaC2O4 =>
(NH4)2C2O4 + BaSO4 = (NH4)2SO4 + BaC2O4
AgNO3 + HCl = AgCl + HNO3 =>
AgNO3 + HCl = AgCl + HNO3
NiS + O2 = Ni2O3 + SO2 =>
4 NiS + 7 O2 = 2 Ni2O3 + 4 SO2
KNO3Mg = MgNO3K =>
KNO3Mg = MgNO3K
(a)Tl(s) + H2S(g) + O2(g) = Tl2S(s) + H2O(l) =>
4(a)Tl(s) + 2 H2S(g) + O2(g) = 2 Tl2S(s) + 2 H2O(l)
Mg(NO3)2 + Na(OH)2 = Mg(OH)2 + Na(NO3)2 =>
Mg(NO3)2 + Na(OH)2 = Mg(OH)2 + Na(NO3)2
CH2CHCH3 + HBr = CH2CH2CH3Br =>
CH2CHCH3 + HBr = CH2CH2CH3Br
BaS + CuSO4 = BaSO4 + CuS =>
BaS + CuSO4 = BaSO4 + CuS
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