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2 Cu2O + O2 = 4 CuO
H2S + HNO3 = S + NO + H2O =>
3 H2S + 2 HNO3 = 3 S + 2 NO + 4 H2O
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
SO2 + O2 = SO3 =>
2 SO2 + O2 = 2 SO3
PbI2 + Mg = MgI2 + Pb =>
PbI2 + Mg = MgI2 + Pb
Mg + Br2 = MgBr =>
2 Mg + Br2 = 2 MgBr
C9H6O4 + O2 = CO2 + H2O =>
2 C9H6O4 + 17 O2 = 18 CO2 + 6 H2O
NiCl2 + (NH4)2S = NiS + NH4Cl =>
NiCl2 + (NH4)2S = NiS + 2 NH4Cl
Fe + O2 = Fe2O3 =>
4 Fe + 3 O2 = 2 Fe2O3
Mg + Cl2 = MgCl2 =>
Mg + Cl2 = MgCl2
Na3PO4 + KOH = NaOH + K3PO4 =>
Na3PO4 + 3 KOH = 3 NaOH + K3PO4
Ba3N2 + H2O = Ba(OH)2 + NH3 =>
Ba3N2 + 6 H2O = 3 Ba(OH)2 + 2 NH3
H2 + Cl2 = HCl =>
H2 + Cl2 = 2 HCl
Fe2O3(s) + C(s) = Fe(s) + CO(g) =>
Fe2O3(s) + 3 C(s) = 2 Fe(s) + 3 CO(g)
Zn + HCl = ZnCl2 + H2 =>
Zn + 2 HCl = ZnCl2 + H2
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
H2 + Cl2 = HCl =>
H2 + Cl2 = 2 HCl
Al + H2SO4 = Al2(SO4)3 + H2 =>
2 Al + 3 H2SO4 = Al2(SO4)3 + 3 H2
Zn + MnO4{-} + H{+} = Zn2{+} + Mn2{+} + H2O =>
26 Zn + 2 MnO4{-} + 16 H{+} = 13 Zn2{+} + Mn2{+} + 8 H2O
Ho2O3 + HNO3 = Ho(NO3)3*6H2O + N2 + O2 =>
2 Ho2O3 + 48 HNO3 = 4 Ho(NO3)3*6H2O + 18 N2 + 45 O2
C4H10 + O2 = CO2 + H2O =>
2 C4H10 + 13 O2 = 8 CO2 + 10 H2O
P + O2 = P4O6 =>
4 P + 3 O2 = P4O6
Na2O + H2O = NaOH =>
Na2O + H2O = 2 NaOH
CaCO3 = CaO + CO2 =>
CaCO3 = CaO + CO2
ZnCl2 + (NH4)2S = ZnS + NH4Cl =>
ZnCl2 + (NH4)2S = ZnS + 2 NH4Cl
Na + O2 = Na2O =>
4 Na + O2 = 2 Na2O
K3PO4 + BaCl2 = KCl + Ba3(PO4)2 =>
2 K3PO4 + 3 BaCl2 = 6 KCl + Ba3(PO4)2
PbO2 + H2 = Pb + H2O =>
PbO2 + 2 H2 = Pb + 2 H2O
Zn + CdCl2 = ZnCl2 + Cd =>
Zn + CdCl2 = ZnCl2 + Cd
Mg + O2 = MgO =>
2 Mg + O2 = 2 MgO
HCl + NaOH = NaCl + H2O =>
HCl + NaOH = NaCl + H2O
Al + O2 = Al2O3 =>
4 Al + 3 O2 = 2 Al2O3
Na2O + H2O = NaOH =>
Na2O + H2O = 2 NaOH
Pb(C2H3O2)2 + (NH4)2SO4 = Pb2(SO4)2 + (NH4)C2H3O2 =>
2 Pb(C2H3O2)2 + 2(NH4)2SO4 = Pb2(SO4)2 + 4(NH4)C2H3O2
CuCO3(s) = CuO(s) + CO2(g) =>
CuCO3(s) = CuO(s) + CO2(g)
Na2O + H2O = NaOH =>
Na2O + H2O = 2 NaOH
Pb(C2H3O2)2 + (NH4)2SO4 = Pb2(SO4)2 + (NH4)C2H3O2 =>
2 Pb(C2H3O2)2 + 2(NH4)2SO4 = Pb2(SO4)2 + 4(NH4)C2H3O2
FeCl3(aq) + NH4OH(aq) = Fe(OH)3 + NH4Cl =>
FeCl3(aq) + 3 NH4OH(aq) = Fe(OH)3 + 3 NH4Cl
Cu(NO3)2 + KOH = Cu(OH)2 + KNO3 =>
Cu(NO3)2 + 2 KOH = Cu(OH)2 + 2 KNO3
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
P + O2 = P2O5 =>
4 P + 5 O2 = 2 P2O5
Cu + HNO3 = Cu(NO3)2 + NO + H2O =>
3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O
K2SO4 + BaCl2 = BaSO4 + KCl =>
K2SO4 + BaCl2 = BaSO4 + 2 KCl
Na3PO4 + AgNO3 = NaNO3 + Ag3PO4 =>
Na3PO4 + 3 AgNO3 = 3 NaNO3 + Ag3PO4
KOH + NH4Cl = KCl + NH4OH =>
KOH + NH4Cl = KCl + NH4OH
Na2CO3 + HCl = NaCl + H2O + CO2 =>
Na2CO3 + 2 HCl = 2 NaCl + H2O + CO2
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
NH3 + H2O = NH4OH =>
NH3 + H2O = NH4OH
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