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2 H2 + O2 = 2 H2O
Pb(NO3)2 = PbO + NO2 + O2 =>
2 Pb(NO3)2 = 2 PbO + 4 NO2 + O2
HCN + Ca(OH)2 = Ca(CN)2 + H2O =>
2 HCN + Ca(OH)2 = Ca(CN)2 + 2 H2O
NaHCO3 = Na2CO3 + CO2 + H2O =>
2 NaHCO3 = Na2CO3 + CO2 + H2O
SiCl4(aq) + H2O(l) = SiO2(s) + HCl(aq) =>
SiCl4(aq) + 2 H2O(l) = SiO2(s) + 4 HCl(aq)
(MgFe)2Si2O6 + H2O + SiO2 = (MgFe)7Si8O22(OH)2 =>
7(MgFe)2Si2O6 + 2 H2O + 2 SiO2 = 2(MgFe)7Si8O22(OH)2
Pb + O2 + CO2 = Pb2OCO3 =>
2 Pb + O2 + CO2 = Pb2OCO3
Pb(MnO4)2 + Y2(CrO4)3 = Y(MnO4)3 + Pb2(CrO4)2 =>
6 Pb(MnO4)2 + 2 Y2(CrO4)3 = 4 Y(MnO4)3 + 3 Pb2(CrO4)2
HF + NaOH = NaF + H2O =>
HF + NaOH = NaF + H2O
H3PO2 + Na2SO3 = Na3PO2 + H2SO3 =>
2 H3PO2 + 3 Na2SO3 = 2 Na3PO2 + 3 H2SO3
Al2S3 + Cl2 = AlCl3 + S2 =>
2 Al2S3 + 6 Cl2 = 4 AlCl3 + 3 S2
SO2 + HNO3 + H2 = NO + H2SO4 =>
2 SO2 + 2 HNO3 + H2 = 2 NO + 2 H2SO4
Li(NO3) = Li20 + NO2 + O2 =>
20 Li(NO3) = Li20 + 20 NO2 + 10 O2
H2S + (Fe(OH)3) = Fe2S3 + H2O =>
3 H2S + 2(Fe(OH)3) = Fe2S3 + 6 H2O
KMnO4 + Al + S = K2S + Al2O3 + Mn =>
6 KMnO4 + 16 Al + 3 S = 3 K2S + 8 Al2O3 + 6 Mn
CuSO4 + ZnBr2 = CuBr2 + ZnSO4 =>
CuSO4 + ZnBr2 = CuBr2 + ZnSO4
HCN + Ba(OH)2 = H2O + Ba(CN)2 =>
2 HCN + Ba(OH)2 = 2 H2O + Ba(CN)2
HBr + NaCl = HCl + BrNa =>
HBr + NaCl = HCl + BrNa
CuS + CN{-} + O2 + H2O = Cu(CN)3{-2} + SCN{-} + OH{-} =>
4 CuS + 16 CN{-} + O2 + 2 H2O = 4 Cu(CN)3{-2} + 4 SCN{-} + 4 OH{-}
Mn + H2S = Mn2S + H2 =>
2 Mn + H2S = Mn2S + H2
K2CO3(aq) + Sr(NO3)2(aq) = SrCO3(s) + KNO3(aq) =>
K2CO3(aq) + Sr(NO3)2(aq) = SrCO3(s) + 2 KNO3(aq)
NaCl(aq) + Ba(NO3)2(aq) = Na(NO3)(aq) + BaCl2(aq) =>
2 NaCl(aq) + Ba(NO3)2(aq) = 2 Na(NO3)(aq) + BaCl2(aq)
KOH + CO2 = KHCO3 =>
KOH + CO2 = KHCO3
H2SO4(aq) + ZnCO3(s) = H2O(l) + CO2(g) + ZnSO4(aq) =>
H2SO4(aq) + ZnCO3(s) = H2O(l) + CO2(g) + ZnSO4(aq)
Ra + Na = RaNa =>
Ra + Na = RaNa
K(s) + S(s) + O2(g) = K2SO3 =>
4 K(s) + 2 S(s) + 3 O2(g) = 2 K2SO3
H2SO3K = KSO3H2 =>
H2SO3K = KSO3H2
Mg2O22{2-} + H{+} + e = Mg{2+} + H2O =>
Mg2O22{2-} + 44 H{+} + 38e = 2 Mg{2+} + 22 H2O
KHP + NaOH = KHPNaOH =>
KHP + NaOH = KHPNaOH
HCl(aq) + Mg(aq) = MgCl2(s) + H2(g) =>
2 HCl(aq) + Mg(aq) = MgCl2(s) + H2(g)
HN3 + KMnO4 + H2SO4 = MnSO4 + KNO2 + N2 + H2O =>
4 HN3 + 2 KMnO4 + 2 H2SO4 = 2 MnSO4 + 2 KNO2 + 5 N2 + 4 H2O
HCl(aq) + K2SO3(aq) = H2O(l) + KCl(aq) + SO2 =>
2 HCl(aq) + K2SO3(aq) = H2O(l) + 2 KCl(aq) + SO2
NaCl(aq) + Ba(NO3)2(aq) = Na(NO3)(aq) + BaCl2(aq) =>
2 NaCl(aq) + Ba(NO3)2(aq) = 2 Na(NO3)(aq) + BaCl2(aq)
(NH4)2CO3 + KBr = (NH4)Br + K2CO3 =>
(NH4)2CO3 + 2 KBr = 2(NH4)Br + K2CO3
Cu(s) + O2 = Cu2O2(s) =>
2 Cu(s) + O2 = Cu2O2(s)
AgHCO3(s) = Ag2CO3(s) + CO2(g) + H2O(g) =>
2 AgHCO3(s) = Ag2CO3(s) + CO2(g) + H2O(g)
C8H10 + O2(g) = CO2 + H2O =>
2 C8H10 + 21 O2(g) = 16 CO2 + 10 H2O
HCl + AlNO3 = HNO3 + AlCl =>
HCl + AlNO3 = HNO3 + AlCl
LiOH + Cl2O7 = LiCl + H2O + O2 =>
2 LiOH + Cl2O7 = 2 LiCl + H2O + 4 O2
H{+} + CrO72{-} + C2H5OH = Cr{3+} + CO2 + H2O =>
12 H{+} + 3 CrO72{-} + 35 C2H5OH = 3 Cr{3+} + 70 CO2 + 111 H2O
K3P + H2SO4 = K3PO4 + SO2 + H2O =>
K3P + 4 H2SO4 = K3PO4 + 4 SO2 + 4 H2O
C5H11Cl + KCN = C6H11N + KCl =>
C5H11Cl + KCN = C6H11N + KCl
S02 = S04 =>
2 S02 = S04
C5H11Cl + KCN = C6H11N + KCl =>
C5H11Cl + KCN = C6H11N + KCl
HNO3 + HF = NOF + F2 + H2O =>
HNO3 + 3 HF = NOF + F2 + 2 H2O
Fe(s) + CuO(s) = FeO(s) + Cu(s) =>
Fe(s) + CuO(s) = FeO(s) + Cu(s)
Al(OH)3 + HCl = AlCl3 + H2O =>
Al(OH)3 + 3 HCl = AlCl3 + 3 H2O
Na2O2(s) + H2O(l) = NaOH(aq) + O2(g) =>
2 Na2O2(s) + 2 H2O(l) = 4 NaOH(aq) + O2(g)
Al(OH)3 + HCl = AlCl3 + H2O =>
Al(OH)3 + 3 HCl = AlCl3 + 3 H2O
Ta + HNO3 + HF = H3[TaF7] + NO + H2O =>
3 Ta + 4 HNO3 + 21 HF = 3 H3[TaF7] + 4 NO + 8 H2O
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