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4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
Zn(OH)2 + H2SO4 = H2O + ZnSO4 =>
Zn(OH)2 + H2SO4 = 2 H2O + ZnSO4
C5H12 + O2 = H2O + CO2 =>
C5H12 + 8 O2 = 6 H2O + 5 CO2
MnCl2 + PbO2 + HNO3 = HMnO4 + Cl2 + Pb(NO3)2 + H2O =>
2 MnCl2 + 7 PbO2 + 14 HNO3 = 2 HMnO4 + 2 Cl2 + 7 Pb(NO3)2 + 6 H2O
Pb(NO3)2(aq) + KI(aq) = PbI2(s) + KNO3(aq) =>
Pb(NO3)2(aq) + 2 KI(aq) = PbI2(s) + 2 KNO3(aq)
PH3 + O2 = H2O + P4O10 =>
4 PH3 + 8 O2 = 6 H2O + P4O10
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
Al(OH)3 + H2SO4 = Al2(SO4)3 + H2O =>
2 Al(OH)3 + 3 H2SO4 = Al2(SO4)3 + 6 H2O
C + O2 = CO2 =>
C + O2 = CO2
BrF3 + H2O = HBrO3 + HF + HBr =>
3 BrF3 + 6 H2O = 2 HBrO3 + 9 HF + HBr
C + O2 = CO =>
2 C + O2 = 2 CO
Zn + HBr = H2 + ZnBr2 =>
Zn + 2 HBr = H2 + ZnBr2
As2O3 + NO3{-} + H20 + H{+} = H3AsO4{-} + N2O3 =>
30 As2O3 + 100 NO3{-} + 7 H20 + 40 H{+} = 60 H3AsO4{-} + 50 N2O3
CH4(g) + O2(g) = CO2(g) + H2O(l) =>
CH4(g) + 2 O2(g) = CO2(g) + 2 H2O(l)
NO + CO = N2 + CO2 =>
2 NO + 2 CO = N2 + 2 CO2
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
PbO2 = PbO + O2 =>
2 PbO2 = 2 PbO + O2
I2 + HNO3 = HIO3 + NO + H2O =>
3 I2 + 10 HNO3 = 6 HIO3 + 10 NO + 2 H2O
Fe + O2 = Fe2O3 =>
4 Fe + 3 O2 = 2 Fe2O3
PCl3 + KOH = K2HPO3 + KCl + H2O =>
PCl3 + 5 KOH = K2HPO3 + 3 KCl + 2 H2O
K2Cr2O7(aq) + Na2S(aq) = K2S(aq) + Na2Cr2O7(aq) =>
K2Cr2O7(aq) + Na2S(aq) = K2S(aq) + Na2Cr2O7(aq)
I + NaF = NaI + F =>
I + NaF = NaI + F
K2HPO3 + Ca(OH)2 = KOH + CaHPO3 =>
K2HPO3 + Ca(OH)2 = 2 KOH + CaHPO3
H3PO4 + NH3 = (NH4)3PO4 =>
H3PO4 + 3 NH3 = (NH4)3PO4
MnO2 + CO = Mn2O3 + CO2 =>
2 MnO2 + CO = Mn2O3 + CO2
CH3COH + H2 = C2H5OH =>
CH3COH + H2 = C2H5OH
Ca(NO3)2(aq) + Na3PO4(aq) = Ca3(PO4)2(s) + NaNO3(aq) =>
3 Ca(NO3)2(aq) + 2 Na3PO4(aq) = Ca3(PO4)2(s) + 6 NaNO3(aq)
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
C2H5OH + O2 = CO2 + H2O =>
C2H5OH + 3 O2 = 2 CO2 + 3 H2O
Cr(NO3)3 + Na2S + H2O = Cr(OH)3 + H2S + NaNO3 =>
2 Cr(NO3)3 + 3 Na2S + 6 H2O = 2 Cr(OH)3 + 3 H2S + 6 NaNO3
FeCl3 + NaOH = Fe(OH)3 + NaCl =>
FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl
KClO3 + K2S2O8 = K2SO4 + O2 + ClO2 =>
2 KClO3 + K2S2O8 = 2 K2SO4 + O2 + 2 ClO2
Al2(SO4)3 + NaOH = Al(OH)3 + Na2SO4 =>
Al2(SO4)3 + 6 NaOH = 2 Al(OH)3 + 3 Na2SO4
CaO + H2O = Ca(OH)2 =>
CaO + H2O = Ca(OH)2
Fe(OH)2 + H3PO4 = Fe3(PO4)2 + H2O =>
3 Fe(OH)2 + 2 H3PO4 = Fe3(PO4)2 + 6 H2O
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
CO2 + H2O = C6H12O6 + O2 =>
6 CO2 + 6 H2O = C6H12O6 + 6 O2
CuF2(aq) + H2SO4(aq) = CuSO4(aq) + HF(g) =>
CuF2(aq) + H2SO4(aq) = CuSO4(aq) + 2 HF(g)
Hg(NO3)2 = HgO + NO2 + O2 =>
2 Hg(NO3)2 = 2 HgO + 4 NO2 + O2
H + O = H2O =>
2 H + O = H2O
KClO3 + MnSO4 + KOH = K2MnO4 + KCl + H2SO4 =>
2 KClO3 + 3 MnSO4 + 6 KOH = 3 K2MnO4 + 2 KCl + 3 H2SO4
NH3(g) + O2(g) = NO(g) + H2O =>
4 NH3(g) + 5 O2(g) = 4 NO(g) + 6 H2O
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
KI + HNO3 = I2 + H2O + NO + KNO3 =>
6 KI + 8 HNO3 = 3 I2 + 4 H2O + 2 NO + 6 KNO3
NO2 + H2O = NO + HNO3 =>
3 NO2 + H2O = NO + 2 HNO3
HCl + K2CrO7 + C2H5OH = CrCl3 + CO2 + KCl + H2O =>
20 HCl + 4 K2CrO7 + 3 C2H5OH = 4 CrCl3 + 6 CO2 + 8 KCl + 19 H2O
MnO2(s) + HCl(aq) = MnCl2(aq) + H2O(l) + Cl2(g) =>
MnO2(s) + 4 HCl(aq) = MnCl2(aq) + 2 H2O(l) + Cl2(g)
H + O = H2O =>
2 H + O = H2O
CH3COONa + AlCl3 + H2O = CH3COOH + Al(OH)3 + NaCl =>
3 CH3COONa + AlCl3 + 3 H2O = 3 CH3COOH + Al(OH)3 + 3 NaCl
KClO3 + C6H12O6 = CO2 + H2O + KCl =>
4 KClO3 + C6H12O6 = 6 CO2 + 6 H2O + 4 KCl
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