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2 Cu2S1 + 3 O2 = 2 Cu2O1 + 2 SO2
Au2O3 = Au + O2 =>
2 Au2O3 = 4 Au + 3 O2
Li + CO2 = Li2O + CO =>
2 Li + CO2 = Li2O + CO
MnO2 + NaCl + H2SO4 = Na2SO4 + MnSO4 + H2O + Cl2 =>
MnO2 + 2 NaCl + 2 H2SO4 = Na2SO4 + MnSO4 + 2 H2O + Cl2
CF4 + H2O = CO2 + HF =>
CF4 + 2 H2O = CO2 + 4 HF
Mg + H2CO3 = MgCO3 + H =>
Mg + H2CO3 = MgCO3 + 2 H
HCOHCuO = HCOOHCu =>
HCOHCuO = HCOOHCu
Zn + HNO3 = Zn(NO3)2 + NH4(NO3) + H2O =>
4 Zn + 10 HNO3 = 4 Zn(NO3)2 + NH4(NO3) + 3 H2O
NaH + H2O = NaHO + H2 =>
NaH + H2O = NaHO + H2
Al2(SO4)3(aq) + (NH4)2Cr2O7(aq) = Al2(Cr2O7)3(s) + (NH4)2SO4(aq) =>
Al2(SO4)3(aq) + 3(NH4)2Cr2O7(aq) = Al2(Cr2O7)3(s) + 3(NH4)2SO4(aq)
Ag2O = Ag + O2 =>
2 Ag2O = 4 Ag + O2
C3H6 + Na = C3H6Na2 =>
C3H6 + 2 Na = C3H6Na2
Cu(NO3)2 + Mg = Mg(NO3)2 + CuMg =>
Cu(NO3)2 + 2 Mg = Mg(NO3)2 + CuMg
KIO3 = KIO4 + KI =>
4 KIO3 = 3 KIO4 + KI
AgOH + Zn = Zn(OH)2 + Ag =>
2 AgOH + Zn = Zn(OH)2 + 2 Ag
AgNO3 + KBr = KNO3 + AgBr =>
AgNO3 + KBr = KNO3 + AgBr
CaCO3 + C2H5OH = Ca(OH)2 + C2H6 + CO2 =>
3 CaCO3 + 7 C2H5OH = 3 Ca(OH)2 + 6 C2H6 + 5 CO2
SO3{2-} + H2O + AgNO3 = SO4{2-} + HNO3 + Ag =>
SO3{2-} + H2O + 2 AgNO3 = SO4{2-} + 2 HNO3 + 2 Ag
Ag = Ag2 =>
2 Ag = Ag2
C2H3Cl3 + O2 = Cl2 + CO2 + H2O =>
4 C2H3Cl3 + 11 O2 = 6 Cl2 + 8 CO2 + 6 H2O
NaNO3 = NaNO2 + O2 =>
2 NaNO3 = 2 NaNO2 + O2
HOCl + Fe2O3 = FeCl2 + O2 + H4 =>
8 HOCl + 2 Fe2O3 = 4 FeCl2 + 7 O2 + 2 H4
Fe2O3(s) + Al(s) = Fe(l) + AlO3(s) =>
Fe2O3(s) + Al(s) = 2 Fe(l) + AlO3(s)
Na2O2 = Na + O2 =>
Na2O2 = 2 Na + O2
Mg + H2CO3 = MgCO3 + H2 =>
Mg + H2CO3 = MgCO3 + H2
Ca(aq) + C2O2(aq) = CaC2O2(s) =>
Ca(aq) + C2O2(aq) = CaC2O2(s)
NaHCO3 + C6H5O7H3 = H2O + CO2 + Na =>
18 NaHCO3 + C6H5O7H3 = 13 H2O + 24 CO2 + 18 Na
Al3 + Na2O = O + Na3Al =>
2 Al3 + 9 Na2O = 9 O + 6 Na3Al
KHC8H4O4 + CaOH = H2O + KCaC8H4O4 =>
KHC8H4O4 + CaOH = H2O + KCaC8H4O4
Na3PO4 + K2 = K3PO4 + Na =>
2 Na3PO4 + 3 K2 = 2 K3PO4 + 6 Na
Ca3(PO4)2(s) + SiO2(s) + C(s) = CaSiO3(l) + CO + P =>
Ca3(PO4)2(s) + 3 SiO2(s) + 5 C(s) = 3 CaSiO3(l) + 5 CO + 2 P
Ca3(PO4)2 + C = Ca3P2 + CO =>
Ca3(PO4)2 + 8 C = Ca3P2 + 8 CO
MgO + HCl = H2O + Mg + Cl =>
MgO + 2 HCl = H2O + Mg + 2 Cl
[Fe(H2O)4(OH)2] + O2 + NH4 = [Fe(H2O)4(OH)3] + NH3 =>
2[Fe(H2O)4(OH)2] + O2 + 2 NH4 = 2[Fe(H2O)4(OH)3] + 2 NH3
AgC2H3O2 + Ba(OH)2 = AgOH + Ba(C2H3O2)2 =>
2 AgC2H3O2 + Ba(OH)2 = 2 AgOH + Ba(C2H3O2)2
AgCl + KNC = KAg(CN)2 + KCl =>
AgCl + 2 KNC = KAg(CN)2 + KCl
AgS = Ag + S =>
AgS = Ag + S
Fe(SCN)3NaOH = Na(SCN)3FeOH =>
Fe(SCN)3NaOH = Na(SCN)3FeOH
sulfur + water = hydrogensulfide + oxygen =>
2 S + 2 H2O = 2 H2S + O2
CaCl2 + NaC18H35O2 = Ca(C18H35O2)2 + NaCl =>
CaCl2 + 2 NaC18H35O2 = Ca(C18H35O2)2 + 2 NaCl
AlBr3 + Cl2 = AlCl3 + Br2 =>
2 AlBr3 + 3 Cl2 = 2 AlCl3 + 3 Br2
HH2O = OH3 =>
HH2O = OH3
NaOH + HCl = NaCl + H2O =>
NaOH + HCl = NaCl + H2O
Si(OH)4 + NaBr = SiBr4 + NaOH =>
Si(OH)4 + 4 NaBr = SiBr4 + 4 NaOH
K(s) + CuCl(aq) = KCl(aq) + Cu(s) =>
K(s) + CuCl(aq) = KCl(aq) + Cu(s)
H2SO3KOH = H2OHKSO3 =>
H2SO3KOH = H2OHKSO3
BrO3{-} + C2H6O = CO2 + Br{-} + H2O =>
2 BrO3{-} + C2H6O = 2 CO2 + 2 Br{-} + 3 H2O
C3H8O3 + C3H7COOH = C15H26O6 + H2O =>
C3H8O3 + 3 C3H7COOH = C15H26O6 + 3 H2O
NaNO3 + PbO = Pb(NO3)2 + Na2O =>
2 NaNO3 + PbO = Pb(NO3)2 + Na2O
Zn + H3PO4 = Zn3(PO4)2 + H2 =>
3 Zn + 2 H3PO4 = Zn3(PO4)2 + 3 H2
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