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2 H2 + O2 = 2 H2O
ZnCl2 + NaOH = Zn(OH)2 + NaCl =>
ZnCl2 + 2 NaOH = Zn(OH)2 + 2 NaCl
CaCO3(s) + HCl(aq) = H2O(l) + CO2(g) + CaCl2(aq) =>
CaCO3(s) + 2 HCl(aq) = H2O(l) + CO2(g) + CaCl2(aq)
ZnH2 = Zn + H2 =>
ZnH2 = Zn + H2
NaI + NaNO2 + H2SO4 = I2 + NO + Na2SO4 + H2O =>
2 NaI + 2 NaNO2 + 2 H2SO4 = I2 + 2 NO + 2 Na2SO4 + 2 H2O
(NH4)2CO3 + Na = NH4 + NaCO3 =>
(NH4)2CO3 + Na = 2 NH4 + NaCO3
CuCl2 + NaNO3 = Cu(NO3)2 + NaCl =>
CuCl2 + 2 NaNO3 = Cu(NO3)2 + 2 NaCl
KNO3 + KOH + Al + H2O = K[Al(OH)4] + NH3 =>
3 KNO3 + 5 KOH + 8 Al + 18 H2O = 8 K[Al(OH)4] + 3 NH3
KOH + CuSO4 = Cu(OH)2 + K2SO4 =>
2 KOH + CuSO4 = Cu(OH)2 + K2SO4
KMnO4 + NaOH = MnO2 + O2 + KOH + Na2O =>
4 KMnO4 + 4 NaOH = 4 MnO2 + 3 O2 + 4 KOH + 2 Na2O
CuO + HCl = CuCl2 + H2O =>
CuO + 2 HCl = CuCl2 + H2O
CaO + HNO3 = Ca(NO3)2 + H2O =>
CaO + 2 HNO3 = Ca(NO3)2 + H2O
C3H7OH + Li = C3H7OLi + H2 =>
2 C3H7OH + 2 Li = 2 C3H7OLi + H2
Cu + NaCl2 = CuCl2 + Na =>
Cu + NaCl2 = CuCl2 + Na
CrO3 + KOH = K2CrO4 + H2O =>
CrO3 + 2 KOH = K2CrO4 + H2O
H2SO4 = H + HSO4 =>
H2SO4 = H + HSO4
FEO + H2 = FE + H2O =>
FEO + H2 = FE + H2O
HgCl2 + SnCl2 = Hg2Cl2 + SnCl4 =>
2 HgCl2 + SnCl2 = Hg2Cl2 + SnCl4
FeBr3 + H2SO4 = Fe2(SO4)3 + HBr =>
2 FeBr3 + 3 H2SO4 = Fe2(SO4)3 + 6 HBr
HI + HClO3 = HCl + I2 + H2O =>
6 HI + HClO3 = HCl + 3 I2 + 3 H2O
H2SO4 + Cu = CuSO4 + SO2 + H2O =>
2 H2SO4 + Cu = CuSO4 + SO2 + 2 H2O
C8H18 + O2 = CO2 + H2O =>
2 C8H18 + 25 O2 = 16 CO2 + 18 H2O
Zn + MgSO4 = Mg + ZnSO4 =>
Zn + MgSO4 = Mg + ZnSO4
KMnO4 + NaOH = MnO2 + O2 + KOH + Na2O =>
4 KMnO4 + 4 NaOH = 4 MnO2 + 3 O2 + 4 KOH + 2 Na2O
HI + Ca(OH)2 = H2O + CaI2 =>
2 HI + Ca(OH)2 = 2 H2O + CaI2
Al + O2 = AlO3 =>
2 Al + 3 O2 = 2 AlO3
NbSn2 + SnO2 = NbO2 + Sn =>
NbSn2 + SnO2 = NbO2 + 3 Sn
Fe2(SO4)3 = Fe{3+} + SO4{2-} =>
Fe2(SO4)3 = 2 Fe{3+} + 3 SO4{2-}
Sn + O2 = SnO2 =>
Sn + O2 = SnO2
KNo2 + KMnO4 + H2O = KNo3 + MnO2 + KOH =>
9 KNo2 + KMnO4 + 2 H2O = 6 KNo3 + MnO2 + 4 KOH
C3H8 + O2 = CO2 + H2O =>
C3H8 + 5 O2 = 3 CO2 + 4 H2O
C2H4 + O2 = CO2 + H2O =>
C2H4 + 3 O2 = 2 CO2 + 2 H2O
NaOH + H2O = NaH + OH =>
NaOH + H2O = NaH + 2 OH
FeO + H2 = Fe + H2O =>
FeO + H2 = Fe + H2O
C2H8O7P2 + NaOH = C2H5Na3O7P2 + H2O =>
C2H8O7P2 + 3 NaOH = C2H5Na3O7P2 + 3 H2O
NaHCO3 + CH3COOH = H2CO3 + NaCH3COO =>
NaHCO3 + CH3COOH = H2CO3 + NaCH3COO
K2CrO4 + H2SO4 = K2Cr2O7 + K2SO4 + H2O =>
2 K2CrO4 + H2SO4 = K2Cr2O7 + K2SO4 + H2O
Fe3 + O2 = Fe3O4 =>
Fe3 + 2 O2 = Fe3O4
PB(NO3)2 = PBO + NO2 + O2 =>
2 PB(NO3)2 = 2 PBO + 4 NO2 + O2
Cu + AgNO3 = Cu(NO3)2 + Ag =>
Cu + 2 AgNO3 = Cu(NO3)2 + 2 Ag
HCOOH + NAOH = HCOONA + H2O =>
HCOOH + NAOH = HCOONA + H2O
KCO3 + HCl = KCl2 + H2O + CO2 =>
KCO3 + 2 HCl = KCl2 + H2O + CO2
C2H8O7P2 + NaOH = C2H4O7P2Na4 + H2O =>
C2H8O7P2 + 4 NaOH = C2H4O7P2Na4 + 4 H2O
K2Cr2O7 + HBr = CrBr3 + KBr + Br2 + H2O =>
K2Cr2O7 + 14 HBr = 2 CrBr3 + 2 KBr + 3 Br2 + 7 H2O
CH3CH2CH2SH + O2 = CH3CH2CH2OH + SO2 =>
2 CH3CH2CH2SH + 3 O2 = 2 CH3CH2CH2OH + 2 SO2
C7H16 + O2 = CO2 + H2O =>
C7H16 + 11 O2 = 7 CO2 + 8 H2O
Pb(NO3)2 + AlCl3 = PbCl2 + Al(NO3)3 =>
3 Pb(NO3)2 + 2 AlCl3 = 3 PbCl2 + 2 Al(NO3)3
O + F2 = FO =>
2 O + F2 = 2 FO
Al + O2 = Al2O3 =>
4 Al + 3 O2 = 2 Al2O3
K2O + HNO3 = KNO3 + H2O =>
K2O + 2 HNO3 = 2 KNO3 + H2O
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