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4 Na + O2 = 2 Na2O
NaI + NaIO3 + H2SO4 = I + Na2SO4 + H2O =>
5 NaI + NaIO3 + 3 H2SO4 = 6 I + 3 Na2SO4 + 3 H2O
C3H8 + O2 = C3H6O2 + H2O =>
2 C3H8 + 3 O2 = 2 C3H6O2 + 2 H2O
CoCl2 + KCNS = K2[Co(CNS)4] + KCl =>
CoCl2 + 4 KCNS = K2[Co(CNS)4] + 2 KCl
Cu + H2SO4 = CuSO4 + H2O + SO2 =>
Cu + 2 H2SO4 = CuSO4 + 2 H2O + SO2
carbondioxide + potassiumhydroxide = potassiumcarbonate + water =>
CO2 + 2 KOH = K2CO3 + H2O
[Cu(NH3)2]Cl + K2S = Cu2S + KCl + NH3 =>
2[Cu(NH3)2]Cl + K2S = Cu2S + 2 KCl + 4 NH3
Zn + Pb3N2 = Zn3N2 + Pb =>
3 Zn + Pb3N2 = Zn3N2 + 3 Pb
H2SO4 + Ag = Ag2SO4 + SO2 + H2O =>
2 H2SO4 + 2 Ag = Ag2SO4 + SO2 + 2 H2O
Fe(III)CO3 = Fe(III)O + CO2 =>
Fe(III)CO3 = Fe(III)O + CO2
H2SO4 + Pb(OH)4 = H2O + Pb(SO4)2 =>
2 H2SO4 + Pb(OH)4 = 4 H2O + Pb(SO4)2
(O2N)3C6H2OH = N2(g) + H2O(g) + CO2(g) + C(s) =>
4(O2N)3C6H2OH = 6 N2(g) + 6 H2O(g) + 11 CO2(g) + 13 C(s)
C3H8 + S8 = CS2 + H2S =>
4 C3H8 + 5 S8 = 12 CS2 + 16 H2S
H + O2 = H2O =>
4 H + O2 = 2 H2O
H + OH = H2O =>
H + OH = H2O
C2H2(g) + O2(g) = CO2(g) + H20(g) =>
10 C2H2(g) + 20 O2(g) = 20 CO2(g) + H20(g)
AlBr3 + K2SO4 = KBr + Al2(SO4)3 =>
2 AlBr3 + 3 K2SO4 = 6 KBr + Al2(SO4)3
Ba(OH)2 + KH2PO4 = BaPO4 + KH2(OH)2 =>
Ba(OH)2 + KH2PO4 = BaPO4 + KH2(OH)2
Cr(OH)3 + HCl + H2O = Cr(H2O)6Cl3 =>
Cr(OH)3 + 3 HCl + 3 H2O = Cr(H2O)6Cl3
Zn3N2 + Ca = Ca3N2 + Zn =>
Zn3N2 + 3 Ca = Ca3N2 + 3 Zn
CaO + H2CO3 = CaCO3 + H2O =>
CaO + H2CO3 = CaCO3 + H2O
H3BO3 + K = B + KOH =>
H3BO3 + 3 K = B + 3 KOH
CaCO3(ac) + HCl(ac) = CaCl2(ac) + H2O(l) + CO2(g) =>
CaCO3(ac) + 2 HCl(ac) = CaCl2(ac) + H2O(l) + CO2(g)
NaOH(aq) + Al(s) + H2O = NaAl(OH)4(aq) + H2(g) =>
2 NaOH(aq) + 2 Al(s) + 6 H2O = 2 NaAl(OH)4(aq) + 3 H2(g)
Al + O2 = Al2O3 =>
4 Al + 3 O2 = 2 Al2O3
Ba(OH)2 + NH4NO3 = Ba(NO3)2 + NH3 + H2O =>
Ba(OH)2 + 2 NH4NO3 = Ba(NO3)2 + 2 NH3 + 2 H2O
NH4NO3 + HClO4 = NH4ClO4 + HNO3 =>
NH4NO3 + HClO4 = NH4ClO4 + HNO3
H2S + SO2 = S + H2O =>
2 H2S + SO2 = 3 S + 2 H2O
SnF4 + K2S = SnS2 + KF =>
SnF4 + 2 K2S = SnS2 + 4 KF
C3H6SO + O2 = SO2 + CO2 + H2O =>
C3H6SO + 5 O2 = SO2 + 3 CO2 + 3 H2O
BF3 + AlCl3 = BCl3 + AlF3 =>
BF3 + AlCl3 = BCl3 + AlF3
H + OH = H2O =>
H + OH = H2O
RhCl3 + H2 = HCl + Rh =>
2 RhCl3 + 3 H2 = 6 HCl + 2 Rh
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
Mg + HNO3 = Mg(NO3)2 + H2 =>
Mg + 2 HNO3 = Mg(NO3)2 + H2
Pb3O4(s) + H2(g) = Pb(s) + H2O(l) =>
Pb3O4(s) + 4 H2(g) = 3 Pb(s) + 4 H2O(l)
AlBr3 + K2SO4 = KBr + Al2(SO4)3 =>
2 AlBr3 + 3 K2SO4 = 6 KBr + Al2(SO4)3
BaCl2 + NaOH = NaCl + Ba(OH)2 =>
BaCl2 + 2 NaOH = 2 NaCl + Ba(OH)2
H2 + Cl2 = HCl =>
H2 + Cl2 = 2 HCl
Na + OH = NaOH =>
Na + OH = NaOH
KClO3(heat) = KCl + O2 =>
2 KClO3(heat) = 2 KCl + 3 O2
N2 + O2 = N2O5 =>
2 N2 + 5 O2 = 2 N2O5
KMnO4 + K2SO3 + NaOH = K2MnO4 + K2SO4 + Na2MnO4 + H2O =>
2 KMnO4 + K2SO3 + 2 NaOH = K2MnO4 + K2SO4 + Na2MnO4 + H2O
KMnO4 + K2SO3 + NaOH = K2MnO4 + Na2SO4 + H2O =>
2 KMnO4 + K2SO3 + 2 NaOH = 2 K2MnO4 + Na2SO4 + H2O
C7H5N3O6 + O2 = CO2 + H2O + N2 = =>
4 C7H5N3O6 + 21 O2 = 28 CO2 + 10 H2O + 6 N2
Pb(OH)2 + NaOH = H2O + Na2PbO2 =>
Pb(OH)2 + 2 NaOH = 2 H2O + Na2PbO2
CrOH3 + OH = CrO4 + H2O =>
CrOH3 + 9 OH = CrO4 + 6 H2O
Na2O2 + H2SO4 = Na2SO4 + H2O2 =>
Na2O2 + H2SO4 = Na2SO4 + H2O2
CH3CH2OH + H2SO4 = CH3CH2OSO3H + H2O =>
CH3CH2OH + H2SO4 = CH3CH2OSO3H + H2O
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
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