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2 Fe(OH)3 = Fe2O3 + 3 H2O
MgS + H2S = Mg(SH)2 =>
MgS + H2S = Mg(SH)2
Fe + Pb(NO3)2 = Fe(NO3)2 + Pb =>
Fe + Pb(NO3)2 = Fe(NO3)2 + Pb
Al + FeO = Al2O3 + Fe =>
2 Al + 3 FeO = Al2O3 + 3 Fe
S + O2 = SO2 =>
S + O2 = SO2
Cu + Hg(NO3)2 = CuNO3 + Hg =>
2 Cu + Hg(NO3)2 = 2 CuNO3 + Hg
ZnSO4BaS = ZnSBaSO4 =>
ZnSO4BaS = ZnSBaSO4
K + H2O = KOH + H2 =>
2 K + 2 H2O = 2 KOH + H2
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
Fe(NO3)2(aq) + NaI(aq) = FeI2(s) + NaNO3(aq) =>
Fe(NO3)2(aq) + 2 NaI(aq) = FeI2(s) + 2 NaNO3(aq)
S + KOH = K2S2O3 + K2S + H2O =>
4 S + 6 KOH = K2S2O3 + 2 K2S + 3 H2O
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
SIH4 + O2 = SIO2 + H2O =>
SIH4 + 2 O2 = SIO2 + 2 H2O
Au(NO3)3 + H2O = Au(OH)3 + HNO3 =>
Au(NO3)3 + 3 H2O = Au(OH)3 + 3 HNO3
Cr2(SO4)3 + KOH = K(SO4)3 + Cr2OH =>
Cr2(SO4)3 + KOH = K(SO4)3 + Cr2OH
NH4NO3 + KOH = KNO3 + NH3 + H2O =>
NH4NO3 + KOH = KNO3 + NH3 + H2O
C16H14O3 + NaOH = Na2C15H14O2 + Na2CO3 + H2O =>
C16H14O3 + 4 NaOH = Na2C15H14O2 + Na2CO3 + 2 H2O
Ca(NO3)2 + AgCl = CaCl2 + AgNO3 =>
Ca(NO3)2 + 2 AgCl = CaCl2 + 2 AgNO3
Zn + H2Cr2O7 = ZnCr2O7 + H2 =>
Zn + H2Cr2O7 = ZnCr2O7 + H2
Zn + Fe2O3 = Fe + ZnO =>
3 Zn + Fe2O3 = 2 Fe + 3 ZnO
(C2H5OH) + O2 = CO2 + H2O =>
(C2H5OH) + 3 O2 = 2 CO2 + 3 H2O
Al(s) + Fe3N2(s) = AlN(s) + Fe(s) =>
2 Al(s) + Fe3N2(s) = 2 AlN(s) + 3 Fe(s)
HNO2 + KOH = KNO2 + H2O =>
HNO2 + KOH = KNO2 + H2O
H2O = H + O =>
H2O = 2 H + O
HBr + NH3 = NH4Br =>
HBr + NH3 = NH4Br
Al + CuO = Al2O3 + Cu =>
2 Al + 3 CuO = Al2O3 + 3 Cu
CO + O2 = CO2 =>
2 CO + O2 = 2 CO2
Cu + Al2(SO4)3 = CuSO4 + Al =>
3 Cu + Al2(SO4)3 = 3 CuSO4 + 2 Al
Na(s) + Fe2O3(s) = Na2O(s) + Fe(s) =>
6 Na(s) + Fe2O3(s) = 3 Na2O(s) + 2 Fe(s)
HClO + OH2 = ClO + H3O =>
HClO + OH2 = ClO + H3O
NaNO3 + CH3COOH + KBr = NaNO2 + CH3COOK + H2O + Br2 =>
NaNO3 + 2 CH3COOH + 2 KBr = NaNO2 + 2 CH3COOK + H2O + Br2
Zn + OH{-} + H2O = Zn(OH)4{2-} + H2 =>
Zn + 2 OH{-} + 2 H2O = Zn(OH)4{2-} + H2
NaHS + HOH = NaOH + H2S =>
NaHS + HOH = NaOH + H2S
(Na) + S8 = (Na2S) =>
16(Na) + S8 = 8(Na2S)
Nb + P = Nb3P5 =>
3 Nb + 5 P = Nb3P5
Mg + O2 = MgO =>
2 Mg + O2 = 2 MgO
Al(OH)3 + HCl(aq) = AlCl3 + H2O =>
Al(OH)3 + 3 HCl(aq) = AlCl3 + 3 H2O
CrCl3 + KOH = Cr(OH)3 + KCl =>
CrCl3 + 3 KOH = Cr(OH)3 + 3 KCl
Zn(OH)2 + SO2 = ZnSO4 + H2 =>
Zn(OH)2 + SO2 = ZnSO4 + H2
C7H6O2 + O2 = CO2 + H2O =>
2 C7H6O2 + 15 O2 = 14 CO2 + 6 H2O
CO + NO = CO2 + N2 =>
2 CO + 2 NO = 2 CO2 + N2
Pb(OH)2 + HBr = PbBr2 + H2O =>
Pb(OH)2 + 2 HBr = PbBr2 + 2 H2O
Pb(NO3)2 + KI = PbI2 + KNO3 =>
Pb(NO3)2 + 2 KI = PbI2 + 2 KNO3
Fe2O3 + CO = Fe + CO2 =>
Fe2O3 + 3 CO = 2 Fe + 3 CO2
Mg + SO3 = Mg(SO3)2 =>
Mg + 2 SO3 = Mg(SO3)2
CN{-} + MnO4{-} + H{+} = MnO2 + CNO{-} + H2O =>
3 CN{-} + 2 MnO4{-} + 2 H{+} = 2 MnO2 + 3 CNO{-} + H2O
Pb(NO3)2 + KI = PbI2 + KNO3 =>
Pb(NO3)2 + 2 KI = PbI2 + 2 KNO3
O2 = O3 =>
3 O2 = 2 O3
CH3NH2 + CuO = NO + Cu + H2O + CO2 =>
2 CH3NH2 + 11 CuO = 2 NO + 11 Cu + 5 H2O + 2 CO2
NaHCO3 = Na2CO3 + CO2 + H2O =>
2 NaHCO3 = Na2CO3 + CO2 + H2O
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