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(NH4)2X2O7 = X2O3 + 2 NH4O2
H2S + SO2 = S + HO20 =>
H2S + 20 SO2 = 21 S + 2 HO20
Ba + H2O = Ba(OH)2 + H2 =>
Ba + 2 H2O = Ba(OH)2 + H2
Al(s) + KOH(aq) + H2SO4(aq) = K[Al(SO4)2]12H20(s) + H2(g) + H2O(l) =>
24 Al(s) + 2 KOH(aq) + 48 H2SO4(aq) = 2 K[Al(SO4)2]12H20(s) + 27 H2(g) + 2 H2O(l)
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
HI + CuCO3 = CuI2 + H2O + CO2 =>
2 HI + CuCO3 = CuI2 + H2O + CO2
C8H18 + O2 = CO2 + H2O =>
2 C8H18 + 25 O2 = 16 CO2 + 18 H2O
Na2SiO3 + HNo3 = NaNo3 + H2SiO3 =>
Na2SiO3 + 2 HNo3 = 2 NaNo3 + H2SiO3
NaOH + CS2 = H2O + Na2CO3 + Na2CS3 =>
6 NaOH + 3 CS2 = 3 H2O + Na2CO3 + 2 Na2CS3
HNO2(ag) = NO2 + H2 =>
2 HNO2(ag) = 2 NO2 + H2
BeI2 + KNO3 = Be(NO3)2 + KI =>
BeI2 + 2 KNO3 = Be(NO3)2 + 2 KI
CO2 + SO2 + H2O = H2SO4 + C =>
CO2 + 2 SO2 + 2 H2O = 2 H2SO4 + C
H2SO4 + H2O = SO4{+2} + H3O{-} =>
H2SO4 + 2 H2O = SO4{+2} + 2 H3O{-}
K2SO3 + MgCl2 = KCl + MgSO3 =>
K2SO3 + MgCl2 = 2 KCl + MgSO3
HCl + KClO3 = KCl + HClO3 =>
HCl + KClO3 = KCl + HClO3
Cr(ClO3)2 + KNO3 = Cr(NO3)2 + KClO3 =>
Cr(ClO3)2 + 2 KNO3 = Cr(NO3)2 + 2 KClO3
C + CuO = Cu + CO =>
C + CuO = Cu + CO
Cu2S + HNO3 = Cu(NO3)2 + CuSO4 + NO2 + H2O =>
Cu2S + 12 HNO3 = Cu(NO3)2 + CuSO4 + 10 NO2 + 6 H2O
Cu + AgNO3 = Cu(NO3)2 + Ag =>
Cu + 2 AgNO3 = Cu(NO3)2 + 2 Ag
SiC + HCl = SiCl + CH =>
SiC + HCl = SiCl + CH
MnO4{-} + I{-} + OH{-} = MnO4{2-} + IO4{-} + H2O =>
8 MnO4{-} + I{-} + 8 OH{-} = 8 MnO4{2-} + IO4{-} + 4 H2O
Cu + Cu2S = *Cu*Cu2S =>
Cu + Cu2S = *Cu*Cu2S
Me + O + S = Me2SO4 =>
2 Me + 4 O + S = Me2SO4
Zn + K3[Fe(CN)6] = Zn3[Fe(CN)6]2 + K =>
3 Zn + 2 K3[Fe(CN)6] = Zn3[Fe(CN)6]2 + 6 K
N2 + Na2O = N2O + Na2 =>
N2 + Na2O = N2O + Na2
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
Pb(OH)2 + HCl = H2O + PbCl2 =>
Pb(OH)2 + 2 HCl = 2 H2O + PbCl2
H3AsO4 = As2O5 + H2O =>
2 H3AsO4 = As2O5 + 3 H2O
K2Cr2O7 + HBr = CrBr3 + Br2 + KBr + H2O =>
K2Cr2O7 + 14 HBr = 2 CrBr3 + 3 Br2 + 2 KBr + 7 H2O
H2S + SO2 = S + H2O =>
2 H2S + SO2 = 3 S + 2 H2O
Zn + Sn(NO3)2 = Zn(NO3)2 + Sn =>
Zn + Sn(NO3)2 = Zn(NO3)2 + Sn
BeSO3 + Cl3GaO9 = Be(ClO3)2 + Ga2(SO3)3 =>
3 BeSO3 + 2 Cl3GaO9 = 3 Be(ClO3)2 + Ga2(SO3)3
CH3COOOCCH3 + H2O = CH3COOH =>
CH3COOOCCH3 + H2O = 2 CH3COOH
C12(g) + KBr(aq) = Br2(l) + KC1(aq) =>
C12(g) + 12 KBr(aq) = 6 Br2(l) + 12 KC1(aq)
ZnSO4K2S = ZnS + K2SO4 =>
ZnSO4K2S = ZnS + K2SO4
C2H6O(l) + O2(g) = C2H4O2(l) + H2O(g) =>
C2H6O(l) + O2(g) = C2H4O2(l) + H2O(g)
Pb(NO3)2 + K2CrO4 = KNO3 + PbCrO4 =>
Pb(NO3)2 + K2CrO4 = 2 KNO3 + PbCrO4
C + SO2 = CS2 + CO =>
5 C + 2 SO2 = CS2 + 4 CO
SNS2(s) + O2(g) = SNO2(s) + SO2(g) =>
SNS2(s) + 3 O2(g) = SNO2(s) + 2 SO2(g)
Ca(H)2 + H2O = Ca(OH)2 + H2 =>
Ca(H)2 + 2 H2O = Ca(OH)2 + 2 H2
HgNO3 + KSCN = HgSCN + KNO3 =>
HgNO3 + KSCN = HgSCN + KNO3
C3H6 + O2 = CO2 + H2O =>
2 C3H6 + 9 O2 = 6 CO2 + 6 H2O
NH4{+} + KBr = NH3 + HBr + K{+} =>
NH4{+} + KBr = NH3 + HBr + K{+}
C2H5OH + H2O = CO2 + H2 =>
C2H5OH + 3 H2O = 2 CO2 + 6 H2
Sr(OH)2 + HNO3 = (SrOH)NO3 + H2O =>
Sr(OH)2 + HNO3 = (SrOH)NO3 + H2O
(NH4)2CrO7 + H2O = NH4OH + H2CrO7 =>
(NH4)2CrO7 + 2 H2O = 2 NH4OH + H2CrO7
N3 + H2 = NH3 =>
2 N3 + 9 H2 = 6 NH3
KO + O2 = KO2 =>
2 KO + O2 = 2 KO2
FeCl3 + NaOH = Fe(OH)3 + NaCl =>
FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl
HMg + CK = HK + CMg =>
HMg + CK = HK + CMg
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