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8 Cu2S + S8 = 16 CuS
H2O + S2O5{-2} + I2 = I{-} + SO4{-2} + H{+} =>
3 H2O + S2O5{-2} + 2 I2 = 4 I{-} + 2 SO4{-2} + 6 H{+}
Se8 + F2 = SeF6 =>
Se8 + 24 F2 = 8 SeF6
Mn + OH = Mn(OH)2 =>
Mn + 2 OH = Mn(OH)2
NiCl2 + H2O + Al = Ni(OH)3 + H2 + AlCl3 =>
6 NiCl2 + 18 H2O + 4 Al = 6 Ni(OH)3 + 9 H2 + 4 AlCl3
H2O2 = H2O + O2 =>
2 H2O2 = 2 H2O + O2
Mn(NO3)2 + Na2SO4 = MnSO4 + Na(NO3) =>
Mn(NO3)2 + Na2SO4 = MnSO4 + 2 Na(NO3)
P + H2 = PH2 =>
P + H2 = PH2
MgSO4(aq) + AgClO4(aq) = Mg(ClO4)2(aq) + Ag2SO4(aq) =>
MgSO4(aq) + 2 AgClO4(aq) = Mg(ClO4)2(aq) + Ag2SO4(aq)
XNa2CO3 + XHCl = XCO2 + XNaCl + H2O =>
XNa2CO3 + 2 XHCl = XCO2 + 2 XNaCl + H2O
PbO4 = PbO + O2 =>
2 PbO4 = 2 PbO + 3 O2
Na + ClO = NaCl + O =>
Na + ClO = NaCl + O
NiCl2 + NaOH = Ni(OH)2 + Na2Cl2 =>
NiCl2 + 2 NaOH = Ni(OH)2 + Na2Cl2
BaCl2 + NaOH(aq) = Ba(OH)2 + NaCl =>
BaCl2 + 2 NaOH(aq) = Ba(OH)2 + 2 NaCl
CH3(H2)2CH3 + O2 = CO2 + H2O =>
2 CH3(H2)2CH3 + 9 O2 = 4 CO2 + 10 H2O
Mg(s) + CuCl2(aq) = MgCl2(aq) + Cu(s) =>
Mg(s) + CuCl2(aq) = MgCl2(aq) + Cu(s)
Zn(s) + CuSO4 = Cu(s) + ZnSO4 =>
Zn(s) + CuSO4 = Cu(s) + ZnSO4
HNO3(aq) + H2S(g) = S(s) + NO(g) + H2O(l) =>
2 HNO3(aq) + 3 H2S(g) = 3 S(s) + 2 NO(g) + 4 H2O(l)
AgCl + KNO3 = AgNO3 + KCl =>
AgCl + KNO3 = AgNO3 + KCl
K2CO3 + CO2 = K2CO2 + CO3 =>
K2CO3 + CO2 = K2CO2 + CO3
Rb + RbNO3 = Rb2O + N3 =>
15 Rb + 3 RbNO3 = 9 Rb2O + N3
antimony + oxygen = Sb4O5 =>
8 Sb + 5 O2 = 2 Sb4O5
Cu(OH)2 + KOH = K2CuO2 + H2O =>
Cu(OH)2 + 2 KOH = K2CuO2 + 2 H2O
CH3CH2OH + Na2CO3 = CH3CH2ONa + H2O + CO2 =>
2 CH3CH2OH + Na2CO3 = 2 CH3CH2ONa + H2O + CO2
Fe{3+} + O{2-} + CO = Fe{2+} + CO2 =>
2 Fe{3+} + O{2-} + CO = 2 Fe{2+} + CO2
H2O + CoCl2 + K2C2O4 = CoC2O4(H2O) + KCl =>
H2O + CoCl2 + K2C2O4 = CoC2O4(H2O) + 2 KCl
zinc + hydrogenchloride = hydrogen + zincchloride =>
Zn + 2 HCl = H2 + ZnCl2
Te{2+} + Ce = Ce{3+} + Te =>
3 Te{2+} + 2 Ce = 2 Ce{3+} + 3 Te
CH3(CH2)3CH3 + O4 = CO2 + H2O =>
CH3(CH2)3CH3 + 4 O4 = 5 CO2 + 6 H2O
lead(ii)sulfide + oxygen = lead(ii)oxide + sulfurdioxide =>
2 PbS + 3 O2 = 2 PbO + 2 SO2
Hf(s) + O2(g) = HfO2(s) =>
Hf(s) + O2(g) = HfO2(s)
AgCl + Li2SO4 = SO4Cl + AgLi2 =>
AgCl + Li2SO4 = SO4Cl + AgLi2
Ag(NO3)2(aq) + NaOH = Ag(OH)2 + NaNO3 =>
Ag(NO3)2(aq) + 2 NaOH = Ag(OH)2 + 2 NaNO3
C2H4O2 + Ca(CO3) = CaH4O2 + C2CO3 =>
C2H4O2 + Ca(CO3) = CaH4O2 + C2CO3
MnSO4 + NaI = MnI2 + Na2SO4 =>
MnSO4 + 2 NaI = MnI2 + Na2SO4
Bi(NO3)3 + KSCN = Bi(SCN)3 + KNO3 =>
Bi(NO3)3 + 3 KSCN = Bi(SCN)3 + 3 KNO3
Fe3O4 + Cr2O7{2-} + H{+} = Cr{3+} + Fe{3+} + H2O =>
6 Fe3O4 + Cr2O7{2-} + 62 H{+} = 2 Cr{3+} + 18 Fe{3+} + 31 H2O
Zn(s) + H2SO4(Aq) = ZnSO4(Aq) + H2(g) =>
Zn(s) + H2SO4(Aq) = ZnSO4(Aq) + H2(g)
(NH4)2PtCl6(s) = NH4Cl(aq) + Pt + Cl2(g) =>
(NH4)2PtCl6(s) = 2 NH4Cl(aq) + Pt + 2 Cl2(g)
PbCl2 + NaOH = NaCl + Na2Pb(OH)4 =>
PbCl2 + 4 NaOH = 2 NaCl + Na2Pb(OH)4
CH3CCH + O2 = CO2 + H2O =>
CH3CCH + 4 O2 = 3 CO2 + 2 H2O
Sr(OH)2 + HCl = SrH2 + Cl(OH) =>
Sr(OH)2 + 2 HCl = SrH2 + 2 Cl(OH)
Zn + HCl = ZnCl2 + H2 =>
Zn + 2 HCl = ZnCl2 + H2
(NH4)3PO4 + CaBr2 = Ca3(PO4)2 + NH4Br =>
2(NH4)3PO4 + 3 CaBr2 = Ca3(PO4)2 + 6 NH4Br
FeCl3 + NaNo3 = Fe(No3) + NaCl3 =>
FeCl3 + NaNo3 = Fe(No3) + NaCl3
FeF3 + Cl2 = FeCl3 + F2 =>
2 FeF3 + 3 Cl2 = 2 FeCl3 + 3 F2
H2O + V(OH)3 = VO4 + H =>
H2O + V(OH)3 = VO4 + 5 H
NH4 + Cl = N + HCl =>
NH4 + 4 Cl = N + 4 HCl
Pt + NH3*H2O + H2O2 = [Pt(NH3)2OH] + H2O =>
2 Pt + 4 NH3*H2O + H2O2 = 2[Pt(NH3)2OH] + 4 H2O
Al + KMnO4 + H2SO4 = Al2(SO4)3 + H2O + MnSO4 + K2SO4 =>
10 Al + 6 KMnO4 + 24 H2SO4 = 5 Al2(SO4)3 + 24 H2O + 6 MnSO4 + 3 K2SO4
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