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S + 2 H2SO4 = 3 SO2 + 2 H2O
Ca3 = Ca4 =>
4 Ca3 = 3 Ca4
H2SO4 + P2O5 = H3PO4 + SO3 =>
3 H2SO4 + P2O5 = 2 H3PO4 + 3 SO3
MgO + HCl = MgCl2 + H2O =>
MgO + 2 HCl = MgCl2 + H2O
NaNO3 = NaNO2 + O2 =>
2 NaNO3 = 2 NaNO2 + O2
H + O = HO =>
H + O = HO
(NH4)2CO3H2O + HCl = NH4Cl + CO2 + H2O =>
(NH4)2CO3H2O + 2 HCl = 2 NH4Cl + CO2 + 2 H2O
CaCO3 + HNO3 = Ca(NO3)2 + CO2 + H2O =>
CaCO3 + 2 HNO3 = Ca(NO3)2 + CO2 + H2O
PbS + HCl = PbCl2 + H2S =>
PbS + 2 HCl = PbCl2 + H2S
Fe(s) + H{+}(aq) + O2(aq) = Fe{2+}(aq) + H2O(l) =>
2 Fe(s) + 4 H{+}(aq) + O2(aq) = 2 Fe{2+}(aq) + 2 H2O(l)
HClO4 + Ba(OH)2 = Ba + ClO4 + H2O =>
2 HClO4 + Ba(OH)2 = Ba + 2 ClO4 + 2 H2O
C6H8Cl2O2 + H2O = C6H10O4 + HCl =>
C6H8Cl2O2 + 2 H2O = C6H10O4 + 2 HCl
H3COH + HCl = CH3Cl + H2O =>
H3COH + HCl = CH3Cl + H2O
PbS + HCl = PbCl2 + H2S =>
PbS + 2 HCl = PbCl2 + H2S
Ca + H2O = Ca(OH)2 + H2 =>
Ca + 2 H2O = Ca(OH)2 + H2
(CH3CO)2OH2O = CH3COOH =>
(CH3CO)2OH2O = 2 CH3COOH
KMnO4 + NaHSO3 = MnO2 + H2O + Na2SO4 + K2SO4 + NaHSO4 =>
2 KMnO4 + 3 NaHSO3 = 2 MnO2 + H2O + Na2SO4 + K2SO4 + NaHSO4
H2O + O2 = H2O2 =>
2 H2O + O2 = 2 H2O2
KOH(s) + HNO3(aq) = H2O + KNO3(aq) =>
KOH(s) + HNO3(aq) = H2O + KNO3(aq)
(CH3)2 + O2 = C02 + H2O =>
2(CH3)2 + 3 O2 = 2 C02 + 6 H2O
Ca(OH)2 + H3PO4 = Ca5(PO4)3OH + H2O =>
5 Ca(OH)2 + 3 H3PO4 = Ca5(PO4)3OH + 9 H2O
C6H6Cl6 + NaOH = C6C6 + NaCl + H2O =>
2 C6H6Cl6 + 12 NaOH = C6C6 + 12 NaCl + 12 H2O
NH4 + H2O = HNO2 + H2 =>
2 NH4 + 4 H2O = 2 HNO2 + 7 H2
CH3COONa + NaOH = CH4 + Na2CO3 =>
CH3COONa + NaOH = CH4 + Na2CO3
CaCl2 + NH4OH = Ca(OH)2 + NH4Cl =>
CaCl2 + 2 NH4OH = Ca(OH)2 + 2 NH4Cl
BaSO4(s) + C6H8O7(aq) = C6H6O7Ba(s) + H2SO4(aq) =>
BaSO4(s) + C6H8O7(aq) = C6H6O7Ba(s) + H2SO4(aq)
Fe + H3PO4 = Fe3(PO4)2 + H2 =>
3 Fe + 2 H3PO4 = Fe3(PO4)2 + 3 H2
Mg(s) + Cl2(g) = MgCl2 =>
Mg(s) + Cl2(g) = MgCl2
KMnO4 + C3H8O2 = K2CO3 + Mn2O3 + CO2 + H2O =>
4 KMnO4 + C3H8O2 = 2 K2CO3 + 2 Mn2O3 + CO2 + 4 H2O
NaCN + CuCO3 = Na2CO3 + Cu(CN)2 =>
2 NaCN + CuCO3 = Na2CO3 + Cu(CN)2
CuCl2 + NH4NO3 = NH4Cl + Cu(NO3)2 =>
CuCl2 + 2 NH4NO3 = 2 NH4Cl + Cu(NO3)2
NiCO3 + Al(OH)3 = Ni(OH)2 + Al2(CO3)3 =>
3 NiCO3 + 2 Al(OH)3 = 3 Ni(OH)2 + Al2(CO3)3
SeCl6 + O2 = SeO2 + Cl2 =>
SeCl6 + O2 = SeO2 + 3 Cl2
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
Cu + AgNO3 = Cu(NO3)2 + Ag =>
Cu + 2 AgNO3 = Cu(NO3)2 + 2 Ag
CuH + O2 = CuO2 + H2O =>
4 CuH + 5 O2 = 4 CuO2 + 2 H2O
S + H2SO4 = SO2 + H2O =>
S + 2 H2SO4 = 3 SO2 + 2 H2O
Cl2 + Na2S + H2O = Na2SO3 + HCl =>
3 Cl2 + Na2S + 3 H2O = Na2SO3 + 6 HCl
FeSO4 + Hg = Hg2SO4 + Fe =>
FeSO4 + 2 Hg = Hg2SO4 + Fe
NaNO3 = NaNO2 + O2 =>
2 NaNO3 = 2 NaNO2 + O2
CH3COONa + CuSO4 = Cu2(O2CCH3)4 + Na2SO4 =>
4 CH3COONa + 2 CuSO4 = Cu2(O2CCH3)4 + 2 Na2SO4
K2S + H3PO4 = K3PO4 + H2S =>
3 K2S + 2 H3PO4 = 2 K3PO4 + 3 H2S
Al2O3 + NaOH = H2O + NaAlO2 =>
Al2O3 + 2 NaOH = H2O + 2 NaAlO2
I2 + CaBr2 = Br + CaI =>
I2 + 2 CaBr2 = 4 Br + 2 CaI
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
Ga2S3 + H2O = Ga2O3 + H2S =>
Ga2S3 + 3 H2O = Ga2O3 + 3 H2S
AgClO3 + Na3PO4 = NaClO3 + Ag3PO4 =>
3 AgClO3 + Na3PO4 = 3 NaClO3 + Ag3PO4
Mg3Si2O5(OH)4 + CO2 = Mg3Si4O10(OH)2 + MgCO3 + H2O =>
2 Mg3Si2O5(OH)4 + 3 CO2 = Mg3Si4O10(OH)2 + 3 MgCO3 + 3 H2O
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
C12H26 + O2 = CO2 + H2O =>
2 C12H26 + 37 O2 = 24 CO2 + 26 H2O
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