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4 K + O2 = 2 K2O
H2SO4 + Pb(NO3)4 = HNO3 + Pb(SO4)2 =>
2 H2SO4 + Pb(NO3)4 = 4 HNO3 + Pb(SO4)2
K(ClO3) = KCl + O =>
K(ClO3) = KCl + 3 O
Na2SO3 + NaOH = NaSO3 + Na2OH =>
Na2SO3 + NaOH = NaSO3 + Na2OH
NaOH + K = KOH + Na =>
NaOH + K = KOH + Na
C2H6O + Cr2O72{-} + H{+} = C2H4O + H2O + Cr3{+} =>
427 C2H6O + 6 Cr2O72{-} + 10 H{+} = 427 C2H4O + 432 H2O + 4 Cr3{+}
K(ClO3) = KCl + O2 =>
2 K(ClO3) = 2 KCl + 3 O2
K2CO3 + CaCl2 = KCl + CaCO3 =>
K2CO3 + CaCl2 = 2 KCl + CaCO3
H2 + (O2) = H2O =>
2 H2 + (O2) = 2 H2O
KMnO4 = K2MnO4 + MnO2 + O2 =>
2 KMnO4 = K2MnO4 + MnO2 + O2
PbCl2 + Na2S = PbS + Cl2Na2 =>
PbCl2 + Na2S = PbS + Cl2Na2
KOH + H2SO4 = H2O + KSO3 + OH =>
KOH + H2SO4 = H2O + KSO3 + OH
Y2O3 + BaCO3 + Fe2O3 + CuO = YBaCuFeO5 + CO2 =>
Y2O3 + 2 BaCO3 + Fe2O3 + 2 CuO = 2 YBaCuFeO5 + 2 CO2
Mn(OH)5 + CaSO4 = Mn2(SO4)5 + Ca(OH)2 =>
2 Mn(OH)5 + 5 CaSO4 = Mn2(SO4)5 + 5 Ca(OH)2
Pb3(PO4)2 + NH4MnO4 = Pb(MnO4)2 + (NH4)3PO4 =>
Pb3(PO4)2 + 6 NH4MnO4 = 3 Pb(MnO4)2 + 2(NH4)3PO4
KOH + H2SO4 = KSO4 + H2O + H2 =>
2 KOH + 2 H2SO4 = 2 KSO4 + 2 H2O + H2
KOH + H3AsO4 = K2HAsO4 + H2O =>
2 KOH + H3AsO4 = K2HAsO4 + 2 H2O
Na2CO3 + HNO3 = NaNO3 + H2O + CO2 =>
Na2CO3 + 2 HNO3 = 2 NaNO3 + H2O + CO2
CaSO4 + NaOH = Ca(OH)2 + Na2 + SO4 =>
CaSO4 + 2 NaOH = Ca(OH)2 + Na2 + SO4
NaAlO2 + H2S = NaAlS2 + H2O =>
NaAlO2 + 2 H2S = NaAlS2 + 2 H2O
KOH + NH4Cl = KCl + NH4OH =>
KOH + NH4Cl = KCl + NH4OH
As4O6 + H2O = H3AsO4 + H2 =>
As4O6 + 10 H2O = 4 H3AsO4 + 4 H2
Ca(OH)2(aq) + CH3CO2H(aq) = Ca(CH3CO2)2(aq) + H2O(l) =>
Ca(OH)2(aq) + 2 CH3CO2H(aq) = Ca(CH3CO2)2(aq) + 2 H2O(l)
Li + H2O = Li2O + H2 =>
2 Li + H2O = Li2O + H2
Cl3 = Cl0 =>
Cl3 = 3 Cl0
Li + N2 = Li3N =>
6 Li + N2 = 2 Li3N
Li + O2 = Li2O =>
4 Li + O2 = 2 Li2O
Fe + KClO3 + KOH = K2FeO4 + HCl =>
Fe + KClO3 + KOH = K2FeO4 + HCl
Mg + ZnCl2 = MgCl + Zn =>
2 Mg + ZnCl2 = 2 MgCl + Zn
MnO2 + HCl = MnCl2 + Cl2 + H2O =>
MnO2 + 4 HCl = MnCl2 + Cl2 + 2 H2O
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
PbO(l) + C(s) = Pb(l) + CO(g) =>
PbO(l) + C(s) = Pb(l) + CO(g)
S + HNO3 = H2SO4 + H2O + NO2 =>
S + 6 HNO3 = H2SO4 + 2 H2O + 6 NO2
K2CO3 + HCl = CO2 + H2O + KCl =>
K2CO3 + 2 HCl = CO2 + H2O + 2 KCl
FeCl3 + Na2SO4 = Fe(SO4)3 + Na2Cl =>
FeCl3 + 3 Na2SO4 = Fe(SO4)3 + 3 Na2Cl
NaNO3 + Zn + NaOH = NH3 + Na2ZnO2 + H2O =>
NaNO3 + 4 Zn + 7 NaOH = NH3 + 4 Na2ZnO2 + 2 H2O
Ag2C2 + HCl = C2H2 + AgCl =>
Ag2C2 + 2 HCl = C2H2 + 2 AgCl
FeSO4*7H2O + H2SO4 + O2 = Fe2(SO4)3 + H2O =>
4 FeSO4*7H2O + 2 H2SO4 + O2 = 2 Fe2(SO4)3 + 30 H2O
S + O2 = SO2 =>
S + O2 = SO2
Fe(OH)3 + HI = I2 + H2O + Fe =>
2 Fe(OH)3 + 6 HI = 3 I2 + 6 H2O + 2 Fe
S + O2 = SO3 =>
2 S + 3 O2 = 2 SO3
SiO + Mg = MgO + Si =>
SiO + Mg = MgO + Si
C16H33 + O2 = CO2 + H2O =>
4 C16H33 + 97 O2 = 64 CO2 + 66 H2O
SiO2 + Ca3(PO4)2 = P2O5 + CaSiO3 =>
3 SiO2 + Ca3(PO4)2 = P2O5 + 3 CaSiO3
[Ag(NH3)2] + Cl(aq) + HNO3(aq) = NH4NO3(aq) + AgCl(s) =>
[Ag(NH3)2] + Cl(aq) + 2 HNO3(aq) = 2 NH4NO3(aq) + AgCl(s)
SiO2 + HF = SiF4 + H2O =>
SiO2 + 4 HF = SiF4 + 2 H2O
HNO3 + ZnS = H2O + NO + S8 + Zn(NO3)2 =>
64 HNO3 + 24 ZnS = 32 H2O + 16 NO + 3 S8 + 24 Zn(NO3)2
Sn + KOH = K2SnO2 + H2 =>
Sn + 2 KOH = K2SnO2 + H2
HCl(ac) + Mg(OH)2 = MgCl2 + H2O =>
2 HCl(ac) + Mg(OH)2 = MgCl2 + 2 H2O
S{-2} + I2 = I{-} + S =>
S{-2} + I2 = 2 I{-} + S
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