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4 FeS + 7 O2 = 2 Fe2O3 + 4 SO2
Al2(SO4)3 + Ca(NO2)2 = Al(NO2)3 + CaSO4 =>
Al2(SO4)3 + 3 Ca(NO2)2 = 2 Al(NO2)3 + 3 CaSO4
NH3 + H2C2O4 = NH5 + C2O4 =>
NH3 + H2C2O4 = NH5 + C2O4
HCO3 + SO4 = HS + CO2 + O2 =>
2 HCO3 + 2 SO4 = 2 HS + 2 CO2 + 5 O2
K2O + MgCO3 = Mg2O + KCO3 =>
K2O + 2 MgCO3 = Mg2O + 2 KCO3
HCH3COO(aq) + NaHCO3(s) = CH3COONa(aq) + H2CO3(aq) =>
HCH3COO(aq) + NaHCO3(s) = CH3COONa(aq) + H2CO3(aq)
FO = F + O =>
FO = F + O
Fe(OH)2 + CO2 + H2O = Fe(OH)3 + C =>
4 Fe(OH)2 + CO2 + 2 H2O = 4 Fe(OH)3 + C
K4Fe(CN)6 + H2SO4 + H2O = K2SO4 + FeSO4 + (NH4)2SO4 + CO =>
K4Fe(CN)6 + 6 H2SO4 + 6 H2O = 2 K2SO4 + FeSO4 + 3(NH4)2SO4 + 6 CO
Br2O + H2O = HBr2O + BrO =>
3 Br2O + H2O = 2 HBr2O + 2 BrO
H3PO3 + Mg = H + Mg3PO3 =>
H3PO3 + 3 Mg = 3 H + Mg3PO3
Na2SO3(s) + HCl(aq) = NaCl + H2O + SO2(g) =>
Na2SO3(s) + 2 HCl(aq) = 2 NaCl + H2O + SO2(g)
K(OH) + Al2(SO3)3 = Al(OH)3 + K2(SO3) =>
6 K(OH) + Al2(SO3)3 = 2 Al(OH)3 + 3 K2(SO3)
AgNO3 = Ag2O + NO2 + O2 =>
4 AgNO3 = 2 Ag2O + 4 NO2 + O2
Al + Fe2O3 = Al2O3 + Fe =>
2 Al + Fe2O3 = Al2O3 + 2 Fe
CaBr2 + H3PO4 = Ca3(PO4)2 + HBr =>
3 CaBr2 + 2 H3PO4 = Ca3(PO4)2 + 6 HBr
Na2O + SO3 = Na2SO3 + O =>
Na2O + SO3 = Na2SO3 + O
Mg(NO3)2 + NH3 = MgNH3 + NO3 =>
Mg(NO3)2 + NH3 = MgNH3 + 2 NO3
H3SbO4 + Ti(OH)2 = Ti(H2SbO4)2 + H2O =>
2 H3SbO4 + Ti(OH)2 = Ti(H2SbO4)2 + 2 H2O
HNO2 + Ni(OH)2 = H(OH)2 + NiNO2 =>
HNO2 + Ni(OH)2 = H(OH)2 + NiNO2
Ba3P2 = Ba + P1 =>
Ba3P2 = 3 Ba + 2 P1
H2S + Na2Cr2O7 + H2SO4 = Cr2(SO4)3 + H2O + Na2SO4 =>
3 H2S + 4 Na2Cr2O7 + 13 H2SO4 = 4 Cr2(SO4)3 + 16 H2O + 4 Na2SO4
H2O + H2C2O4 = H3O{+} + C2O4{-2} =>
2 H2O + H2C2O4 = 2 H3O{+} + C2O4{-2}
H2SO4 + K(OH) = H2O + K2SO4 =>
H2SO4 + 2 K(OH) = 2 H2O + K2SO4
I2 + NaOH = NaI + NaOI3 + H2O =>
2 I2 + 2 NaOH = NaI + NaOI3 + H2O
SiO2 + Mg + H2SO4 = MgSO4 + H2O + Si =>
SiO2 + 2 Mg + 2 H2SO4 = 2 MgSO4 + 2 H2O + Si
CH3O{-} + H2O = CH3OH + OH{-} =>
CH3O{-} + H2O = CH3OH + OH{-}
H3PO4 = H4P2O7 + H2O =>
2 H3PO4 = H4P2O7 + H2O
(VO2)2(SO4) + H2SO4 + HCOOH = (VO)(SO4) + H2O + CO2 =>
(VO2)2(SO4) + H2SO4 + HCOOH = 2(VO)(SO4) + 2 H2O + CO2
F99S2 + O2 = F11O23 + S =>
2 F99S2 + 207 O2 = 18 F11O23 + 4 S
Al + HCI = AlHCI =>
Al + HCI = AlHCI
I2 + KOH = KI + KIO + H2O =>
I2 + 2 KOH = KI + KIO + H2O
Fe(OH)3 + P2O5 = Fe(PO3)3 + H2O =>
2 Fe(OH)3 + 3 P2O5 = 2 Fe(PO3)3 + 3 H2O
Bi2S3 + O2 = Bi2O3 + O2S =>
2 Bi2S3 + 9 O2 = 2 Bi2O3 + 6 O2S
BrO3{-} + Cl{-} + H{+} = Br2 + Cl2 + H2O =>
2 BrO3{-} + 10 Cl{-} + 12 H{+} = Br2 + 5 Cl2 + 6 H2O
NaC2H5O + O2 = NaO2 + CO2 + H2O =>
4 NaC2H5O + 15 O2 = 4 NaO2 + 8 CO2 + 10 H2O
Li + CuO = LiO + Cu =>
Li + CuO = LiO + Cu
[Cu(NH3)4]SO4Zn = Zn(NH3)4CuSO4 =>
[Cu(NH3)4]SO4Zn = Zn(NH3)4CuSO4
NaClO + Fe(NO3)3 + NaOH = Na2FeO4 + NaCl + NaNO3 + H2O =>
3 NaClO + 2 Fe(NO3)3 + 10 NaOH = 2 Na2FeO4 + 3 NaCl + 6 NaNO3 + 5 H2O
Mg(NO3)2 + NaOH = Mg(OH)2 + NaNO3 =>
Mg(NO3)2 + 2 NaOH = Mg(OH)2 + 2 NaNO3
NaCl = Na + Cl2 =>
2 NaCl = 2 Na + Cl2
BaSO4 + NaOH = Na2SO4 + Ba(OH)2 =>
BaSO4 + 2 NaOH = Na2SO4 + Ba(OH)2
NaNO3Na2O = Na3NO4 =>
NaNO3Na2O = Na3NO4
C7H8 + H2 = C7H14 =>
C7H8 + 3 H2 = C7H14
S + O2 = SO2 =>
S + O2 = SO2
NO3 + H2O = O2 + HNO3 =>
4 NO3 + 2 H2O = O2 + 4 HNO3
KMnO4 + C2H5OH = MnO2 + CH3CO + H2O + KOH =>
KMnO4 + C2H5OH = MnO2 + CH3CO + H2O + KOH
H{+} + CrO7{-2} + C2H5OH = Cr + C2H4O + H2O =>
2 H{+} + CrO7{-2} + 6 C2H5OH = Cr + 6 C2H4O + 7 H2O
At + O2 = At2O =>
4 At + O2 = 2 At2O
Hg(NO3)2Cu = HgCu(NO3)2 =>
Hg(NO3)2Cu = HgCu(NO3)2
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