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3 Nb2O5 + 8 KOH = K8Nb6O19 + 4 H2O
Cr2(SO4)3 + (NH4)2CO3 = Cr2(CO3)3 + (NH4)2SO4 =>
Cr2(SO4)3 + 3(NH4)2CO3 = Cr2(CO3)3 + 3(NH4)2SO4
K2CrO7 + KI + H2SO4 = Cr2(SO4)3 + K2SO4 + I2 + H2O =>
2 K2CrO7 + 18 KI + 14 H2SO4 = Cr2(SO4)3 + 11 K2SO4 + 9 I2 + 14 H2O
CuO + Ca(OH)2 = Cu(OH)2 + CaO =>
CuO + Ca(OH)2 = Cu(OH)2 + CaO
Cr2(SO3)3 + H2SO4 = Cr2(SO4)3 + SO2 + H2O =>
Cr2(SO3)3 + 3 H2SO4 = Cr2(SO4)3 + 3 SO2 + 3 H2O
Ni(HCO3)2 + NH4Cl = NiCl2 + NH4(HCO3) =>
Ni(HCO3)2 + 2 NH4Cl = NiCl2 + 2 NH4(HCO3)
K2CO3 + Ag3PO4 = K3PO4 + Ag2CO3 =>
3 K2CO3 + 2 Ag3PO4 = 2 K3PO4 + 3 Ag2CO3
Mg + HCl = MgCl2 + H2 =>
Mg + 2 HCl = MgCl2 + H2
Cu + HBr = CuBr2 + H2 =>
Cu + 2 HBr = CuBr2 + H2
AgNO3 + S2 = AgS2 + NO3 =>
AgNO3 + S2 = AgS2 + NO3
CH3COCH3 + O2 = CO2 + H2O =>
CH3COCH3 + 4 O2 = 3 CO2 + 3 H2O
Sr(OH)2 + HI = SrI2 + H2O =>
Sr(OH)2 + 2 HI = SrI2 + 2 H2O
Hg2(NO3)2(aq) = Hg2 + (NO3)(aq) =>
Hg2(NO3)2(aq) = Hg2 + 2(NO3)(aq)
Hg{2+} + Cr{2+} = Hg + Cr{3+} =>
Hg{2+} + 2 Cr{2+} = Hg + 2 Cr{3+}
Fe + LiCl2 = Li + FeCl2 =>
Fe + LiCl2 = Li + FeCl2
(NH4)2CO3 + CaSO4 = (NH4)2SO4 + CaCO3 =>
(NH4)2CO3 + CaSO4 = (NH4)2SO4 + CaCO3
K2SO4 + Ba(NO3)2 = KNO3 + BaSO4 =>
K2SO4 + Ba(NO3)2 = 2 KNO3 + BaSO4
PbO + KOH = Pb(OH)2 + K2O =>
PbO + 2 KOH = Pb(OH)2 + K2O
Ni(OH)2 = H2O + NiO =>
Ni(OH)2 = H2O + NiO
(NH4)2S + Co(NO3)2 = CoS + (NH4)(NO3) =>
(NH4)2S + Co(NO3)2 = CoS + 2(NH4)(NO3)
N2 + H2O = O2 + N2H4 =>
N2 + 2 H2O = O2 + N2H4
Ni(s) + H2SO4(aq) = H2O + NiSO4 + SO2 =>
Ni(s) + 2 H2SO4(aq) = 2 H2O + NiSO4 + SO2
C4H10O + H2O = CO2 + H2 =>
C4H10O + 7 H2O = 4 CO2 + 12 H2
Ru + HNO3 + HCl = H2(RuCl6) + NO + H2O =>
3 Ru + 4 HNO3 + 18 HCl = 3 H2(RuCl6) + 4 NO + 8 H2O
Zn(s) + Al(NO3)3(aq) = Al(s) + Zn(NO3)3(aq) =>
Zn(s) + Al(NO3)3(aq) = Al(s) + Zn(NO3)3(aq)
FeS + HNO3 + FeS2 = Fe(NO3)3 + H2S =>
FeS + 6 HNO3 + FeS2 = 2 Fe(NO3)3 + 3 H2S
H3PO4 + NH4OHO = NH4PO4 + H2O =>
H3PO4 + NH4OHO = NH4PO4 + 2 H2O
Al2O3 + HBr = AlBr3 + H2O =>
Al2O3 + 6 HBr = 2 AlBr3 + 3 H2O
Cu + H2S = CuS + H =>
Cu + H2S = CuS + 2 H
S + HNO3 = SO2 + NO2 + H2O =>
S + 4 HNO3 = SO2 + 4 NO2 + 2 H2O
Cu(BrO3)2 = CuBr2 + O =>
Cu(BrO3)2 = CuBr2 + 6 O
C56H92O2 + O2 = CO2 + H2O =>
C56H92O2 + 78 O2 = 56 CO2 + 46 H2O
(NH4)3PO4(aq) + Ba(OH)2(aq) = Ba3(PO4)2(s) + NH3(g) + H2O(l) =>
2(NH4)3PO4(aq) + 3 Ba(OH)2(aq) = Ba3(PO4)2(s) + 6 NH3(g) + 6 H2O(l)
Ag + Fe2(CO3)3 = Fe3 + AgCO3 =>
9 Ag + 3 Fe2(CO3)3 = 2 Fe3 + 9 AgCO3
MnS + HNO3 = MnSO4 + NO + H2O =>
3 MnS + 8 HNO3 = 3 MnSO4 + 8 NO + 4 H2O
MgCl2 + H2O + Na2CO3 = NaCl + Mg(OH)2 + H2CO3 =>
MgCl2 + 2 H2O + Na2CO3 = 2 NaCl + Mg(OH)2 + H2CO3
K2Cr2O7 + K2S + CH3COOH = S + (CH3COO)3Cr + CH3COOK + H2O =>
K2Cr2O7 + 3 K2S + 14 CH3COOH = 3 S + 2(CH3COO)3Cr + 8 CH3COOK + 7 H2O
PBO + NaOH = Na2PBO2 + H2O =>
PBO + 2 NaOH = Na2PBO2 + H2O
HClO4 + Na3PO4 = NaClO4 + H3PO4 =>
3 HClO4 + Na3PO4 = 3 NaClO4 + H3PO4
CrCl2 + H2SO4 = Cr2(SO4)3 + HCl + S + H2O =>
6 CrCl2 + 10 H2SO4 = 3 Cr2(SO4)3 + 12 HCl + S + 4 H2O
NaBr + H2SO4 + C2H5OH = C2H5Br + H2O + Na2SO4 =>
2 NaBr + H2SO4 + 2 C2H5OH = 2 C2H5Br + 2 H2O + Na2SO4
CoS + HNO3 = Co(NO3)2 + N2O4 + S + H2O =>
CoS + 4 HNO3 = Co(NO3)2 + N2O4 + S + 2 H2O
CO + O2 = CO2 =>
2 CO + O2 = 2 CO2
C2(OH)2 + HCl = C2Cl2 + H2O =>
C2(OH)2 + 2 HCl = C2Cl2 + 2 H2O
O3 + OH{-} = O2{-} + HO2 =>
O3 + OH{-} = O2{-} + HO2
Na2S(aq) + HCl(aq) = H2S(g) + NaCl(aq) =>
Na2S(aq) + 2 HCl(aq) = H2S(g) + 2 NaCl(aq)
CaPO4 + HSO4 = CaSO4 + HPO4 =>
CaPO4 + HSO4 = CaSO4 + HPO4
C5H11Br + KOH = C5H10 + KBr + H2O =>
C5H11Br + KOH = C5H10 + KBr + H2O
C4H6CuO4 + Na2CrO4 = CuCrO4 + Na + CH3CO2 =>
C4H6CuO4 + Na2CrO4 = CuCrO4 + 2 Na + 2 CH3CO2
PbO + O3 = PbO2 =>
3 PbO + O3 = 3 PbO2
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