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HCHO + I2 + 3 NaOH = HCOONa + 2 NaI + 2 H2O
Ca + O2 = CaO =>
2 Ca + O2 = 2 CaO
Sn + HNO3 = Sn(NO3)2 + N2 + H2O =>
5 Sn + 12 HNO3 = 5 Sn(NO3)2 + N2 + 6 H2O
NH3(g) + O2(g) = NO(g) + H2O(g) =>
4 NH3(g) + 5 O2(g) = 4 NO(g) + 6 H2O(g)
C7H5(NO2) + C5H8O3 + NH3 = C17H18O4N(NO2) + H2O =>
17 C7H5(NO2) + 17 C5H8O3 + 7 NH3 = 12 C17H18O4N(NO2) + 13 H2O
Al + Hg(NO3)2 = Hg3Al2 + Al(NO3)3 =>
4 Al + 3 Hg(NO3)2 = Hg3Al2 + 2 Al(NO3)3
NH3 + O2 = N2 + H2O =>
4 NH3 + 3 O2 = 2 N2 + 6 H2O
Cu(s) + HNO3(aq) = Cu(NO3)2(aq) + NO(g) + H2O(l) =>
3 Cu(s) + 8 HNO3(aq) = 3 Cu(NO3)2(aq) + 2 NO(g) + 4 H2O(l)
Zn + AsO3 + H2SO4 = AsH3 + ZnSO4 + H2O =>
9 Zn + 2 AsO3 + 9 H2SO4 = 2 AsH3 + 9 ZnSO4 + 6 H2O
Ba + O = BaO =>
Ba + O = BaO
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
Fe + NiSO4 = Ni + FeSO4 =>
Fe + NiSO4 = Ni + FeSO4
CaCl2 + AgNO3 = Ca(NO3)2 + AgCl =>
CaCl2 + 2 AgNO3 = Ca(NO3)2 + 2 AgCl
K + H2O = KOH + H2 =>
2 K + 2 H2O = 2 KOH + H2
AGO2 = AG + O2 =>
AGO2 = AG + O2
NH4OH + H2O2 = H2O + NHO3 =>
NH4OH + 4 H2O2 = 6 H2O + NHO3
Mg + H2SO4 = MgSO4 + H2 =>
Mg + H2SO4 = MgSO4 + H2
Ag(NO3) + NaBr = Na(NO3) + AgBr =>
Ag(NO3) + NaBr = Na(NO3) + AgBr
NH4OH + H2O2 = H2O + NHO3 =>
NH4OH + 4 H2O2 = 6 H2O + NHO3
KI + HNO3 = KNO3 + HIO3 + NO2 + H2O =>
KI + 7 HNO3 = KNO3 + HIO3 + 6 NO2 + 3 H2O
K4[Fe(CN)6] + Br2 = K3[Fe(CN)6] + KBr =>
2 K4[Fe(CN)6] + Br2 = 2 K3[Fe(CN)6] + 2 KBr
C6H12O6 = CO2 + CH3CH2OH =>
C6H12O6 = 2 CO2 + 2 CH3CH2OH
Zn + Cu2(SO4) = Cu + Zn(SO4) =>
Zn + Cu2(SO4) = 2 Cu + Zn(SO4)
Na + H2O = Na2O + H2 =>
2 Na + H2O = Na2O + H2
Fe + Pb(NO3)2 = FeNO3 + Pb =>
2 Fe + Pb(NO3)2 = 2 FeNO3 + Pb
K2SnO2 + Bi(OH)3 = K2SnO3 + Bi + H2O =>
3 K2SnO2 + 2 Bi(OH)3 = 3 K2SnO3 + 2 Bi + 3 H2O
Ca + H2O = CaO + H2 =>
Ca + H2O = CaO + H2
S + O2 = SO3 =>
2 S + 3 O2 = 2 SO3
Zn + H2O = H2 + ZnO =>
Zn + H2O = H2 + ZnO
MnO4{-} + ClO2{-} + H2O = MnO2 + ClO4{-} + OH{-} =>
4 MnO4{-} + 3 ClO2{-} + 2 H2O = 4 MnO2 + 3 ClO4{-} + 4 OH{-}
Na2S2O3 + Cl2 + H2O = NaHSO4 + HCl =>
Na2S2O3 + 4 Cl2 + 5 H2O = 2 NaHSO4 + 8 HCl
(NH4)2CO3 + HNO3 = NH4(NO3) + H2CO3 =>
(NH4)2CO3 + 2 HNO3 = 2 NH4(NO3) + H2CO3
KIO3 + KI + H2SO4 = I2 + K2SO4 + H2O =>
KIO3 + 5 KI + 3 H2SO4 = 3 I2 + 3 K2SO4 + 3 H2O
NO2 + H2O = HNO3 + NO =>
3 NO2 + H2O = 2 HNO3 + NO
Cu + H2O = H2 + CuO =>
Cu + H2O = H2 + CuO
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
NA + CL = NACL =>
NA + CL = NACL
K2CO3 + NiBr2 = KBr + Ni2(CO3)2 =>
2 K2CO3 + 2 NiBr2 = 4 KBr + Ni2(CO3)2
CuCl2 + NaSH + H2O = Cu2S + NaCl + HCl + SO2 =>
6 CuCl2 + 4 NaSH + 2 H2O = 3 Cu2S + 4 NaCl + 8 HCl + SO2
K(ClO4) = KCl + O2 =>
K(ClO4) = KCl + 2 O2
KNO2 + Al2(SO4)3 = K2SO4 + Al(NO2)3 =>
6 KNO2 + Al2(SO4)3 = 3 K2SO4 + 2 Al(NO2)3
CaCO3 = CaO + CO2 =>
CaCO3 = CaO + CO2
Cr2O3 + CO = Cr + CO2 =>
Cr2O3 + 3 CO = 2 Cr + 3 CO2
Zn + Fe(NO3)2 = ZnNO3 + Fe =>
2 Zn + Fe(NO3)2 = 2 ZnNO3 + Fe
Ca + H2O = Ca(OH)2 + H2 =>
Ca + 2 H2O = Ca(OH)2 + H2
PbO2 + HCl = H2O + PbCl2 + Cl2 =>
PbO2 + 4 HCl = 2 H2O + PbCl2 + Cl2
HOCCH(NH)CH + O2 = CO2 + H2O + N2 =>
2 HOCCH(NH)CH + 7 O2 = 6 CO2 + 4 H2O + N2
AsF3 + C2Cl6 = AsCl3 + C2Cl2F4 =>
4 AsF3 + 3 C2Cl6 = 4 AsCl3 + 3 C2Cl2F4
NA + CL = NACL =>
NA + CL = NACL
Cl2O7 + H2O = HClO4 =>
Cl2O7 + H2O = 2 HClO4
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