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4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
Pb(NO3)2 + K2SO4 = PbSO4 + KNO3 =>
Pb(NO3)2 + K2SO4 = PbSO4 + 2 KNO3
C5H9O + O2 = CO2 + H2O =>
4 C5H9O + 27 O2 = 20 CO2 + 18 H2O
CO + Fe2O3 = CO2 + Fe =>
3 CO + Fe2O3 = 3 CO2 + 2 Fe
S2{-} + NO3{-} + H{+} = SO42{-} + NO + H2O =>
3 S2{-} + 167 NO3{-} + 164 H{+} = 6 SO42{-} + 167 NO + 82 H2O
Fe + H2SO4 = Fe2(SO4)3 + H2 =>
2 Fe + 3 H2SO4 = Fe2(SO4)3 + 3 H2
H2SO4 + KI = KHSO4 + I2 + H2O + H2S =>
9 H2SO4 + 8 KI = 8 KHSO4 + 4 I2 + 4 H2O + H2S
LiOH + NH3 = Li3N + H2O =>
3 LiOH + NH3 = Li3N + 3 H2O
As4 + O2 = As4O10 =>
As4 + 5 O2 = As4O10
Na2S + HNO3 = NaNO3 + H2S =>
Na2S + 2 HNO3 = 2 NaNO3 + H2S
KCl + H2SO4 = KHSO4 + HCl =>
KCl + H2SO4 = KHSO4 + HCl
HClO3 + SO2 = HCl + SO3 =>
HClO3 + 3 SO2 = HCl + 3 SO3
K + H2O = KOH + H2 =>
2 K + 2 H2O = 2 KOH + H2
AgNO3 + NaOH = AgOH + NaNO3 =>
AgNO3 + NaOH = AgOH + NaNO3
I2 + KNO3 + HCl = KIO3 + NO + KCl + H2O =>
3 I2 + 10 KNO3 + 4 HCl = 6 KIO3 + 10 NO + 4 KCl + 2 H2O
NH3 + H2SO4 = (NH4)2SO4 =>
2 NH3 + H2SO4 = (NH4)2SO4
Cu(OH)2(s) + HNO3 = Cu(NO3)2 + H2O =>
Cu(OH)2(s) + 2 HNO3 = Cu(NO3)2 + 2 H2O
NH4Cl + Na2SiO3 = NH3 + NaCl + H2SiO3 =>
2 NH4Cl + Na2SiO3 = 2 NH3 + 2 NaCl + H2SiO3
C2H5OH + HCl = C3H7Cl + H2O =>
3 C2H5OH + 2 HCl = 2 C3H7Cl + 3 H2O
Ba(aq) + NaCl(aq) = BaCl2(aq) + Na(aq) =>
Ba(aq) + 2 NaCl(aq) = BaCl2(aq) + 2 Na(aq)
AlBr3 + K2SO4 = KBr + Al2(SO4)3 =>
2 AlBr3 + 3 K2SO4 = 6 KBr + Al2(SO4)3
Al2O3 + SO2 = Al + SO3 =>
Al2O3 + 3 SO2 = 2 Al + 3 SO3
CH3COOC2H5 + H2O = CH3COOH + H2 =>
CH3COOC2H5 + 2 H2O = 2 CH3COOH + 2 H2
CoCl2(H2O)6 = CoCl2 + H2O =>
CoCl2(H2O)6 = CoCl2 + 6 H2O
Mg3P2 + KMnO4 + H2SO4 = Mg3(PO4)2 + MnSO4 + KHSO4 + H2O =>
5 Mg3P2 + 16 KMnO4 + 32 H2SO4 = 5 Mg3(PO4)2 + 16 MnSO4 + 16 KHSO4 + 24 H2O
Mg = Mg{2+} + e =>
Mg = Mg{2+} + 2e
HNCO + NO2 = CO2 + N2 + H2O =>
8 HNCO + 6 NO2 = 8 CO2 + 7 N2 + 4 H2O
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
KNO3 + H2CO3 = K2CO3 + HNO3 =>
2 KNO3 + H2CO3 = K2CO3 + 2 HNO3
H + O4 = H2O =>
8 H + O4 = 4 H2O
Zn = Zn{+2} + {-} =>
Zn = Zn{+2} + 2e
KNO3 + HCN = KCN + HNO3 =>
KNO3 + HCN = KCN + HNO3
K2S + AlP = K3P + Al2S3 =>
3 K2S + 2 AlP = 2 K3P + Al2S3
Mg(s) + HNO3(aq) = Mg(NO3)2(aq) + H2(g) =>
Mg(s) + 2 HNO3(aq) = Mg(NO3)2(aq) + H2(g)
CI + NaI = NaCI + I =>
CI + NaI = NaCI + I
KNO3 + HCN = KCN + HNO3 =>
KNO3 + HCN = KCN + HNO3
Na2C2O4 + CaCl2 = Na2Cl2 + CaC2O4 =>
Na2C2O4 + CaCl2 = Na2Cl2 + CaC2O4
Zn + HCl = ZnCl2 + H2 =>
Zn + 2 HCl = ZnCl2 + H2
C6H5CH2NH3Cl + NaNO2 + HCl = C6H5CH2NH4 + NaCl + NO2 =>
C6H5CH2NH3Cl + 2 NaNO2 + HCl = C6H5CH2NH4 + 2 NaCl + 2 NO2
C4H10 + O2 = CO2 + H2O =>
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
H3C6H3O7 + NaHCO3 = CO2 + H2O + Na3C6H3O7 =>
H3C6H3O7 + 3 NaHCO3 = 3 CO2 + 3 H2O + Na3C6H3O7
KOH + H2SO4 = OH2 + K2SO4 =>
2 KOH + H2SO4 = 2 OH2 + K2SO4
C6H12O6 + Cu(OH)2 = CuOH + C6H12O7 + H2O =>
C6H12O6 + 2 Cu(OH)2 = 2 CuOH + C6H12O7 + H2O
C4H8 + O2 = CO2 + H2O =>
C4H8 + 6 O2 = 4 CO2 + 4 H2O
NH4Cl + NaOH = H2O + NH3 + NaCl =>
NH4Cl + NaOH = H2O + NH3 + NaCl
Zn + HCl = ZnCl2 + H2 =>
Zn + 2 HCl = ZnCl2 + H2
FeS + O2 = Fe2O3 + SO2 =>
4 FeS + 7 O2 = 2 Fe2O3 + 4 SO2
K + I2 = KI =>
2 K + I2 = 2 KI
(NH4)2S2O3 + KClO3 = K2S2O3 + NH4ClO3 =>
(NH4)2S2O3 + 2 KClO3 = K2S2O3 + 2 NH4ClO3
NH3 + O2 = N2 + H2O =>
4 NH3 + 3 O2 = 2 N2 + 6 H2O
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