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2 Cu2S = 4 Cu + S2
HC7H5O2 + H2O = H3O + C7H5O2 =>
HC7H5O2 + H2O = H3O + C7H5O2
FeSO4 + Br2 = FeBr3 + SO4 =>
2 FeSO4 + 3 Br2 = 2 FeBr3 + 2 SO4
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
CH3CH2Br + NH3 = CH3CH2NH2 + NH4Br =>
CH3CH2Br + 2 NH3 = CH3CH2NH2 + NH4Br
NaOH + KPH = H2O + KPNa =>
NaOH + KPH = H2O + KPNa
Ir + HCl + HNO3 = H2IrCl6 + NO + H2O =>
3 Ir + 18 HCl + 4 HNO3 = 3 H2IrCl6 + 4 NO + 8 H2O
CuCl2 + AgNO3 = Cu(NO3)2 + AgCl = =>
CuCl2 + 2 AgNO3 = Cu(NO3)2 + 2 AgCl
C6H8O7 + H3PO4 + Fe = C6H12 + H2O + FeHPO4 =>
C6H8O7 + 9 H3PO4 + 9 Fe = C6H12 + 7 H2O + 9 FeHPO4
Cu + N2 + H2O = CuO + NH3 =>
3 Cu + N2 + 3 H2O = 3 CuO + 2 NH3
K2S + BaCl2 = KCl + BaS =>
K2S + BaCl2 = 2 KCl + BaS
I2 + H2SO4 + Na2SO3 = SO2 + NaIO3 + H2O =>
I2 + 5 H2SO4 + Na2SO3 = 6 SO2 + 2 NaIO3 + 5 H2O
P2O5 + H2O = H3PO4 =>
P2O5 + 3 H2O = 2 H3PO4
Pb(C2H3O2)2 + Na2CO3 = PbCO3 + NaC2H3O2 =>
Pb(C2H3O2)2 + Na2CO3 = PbCO3 + 2 NaC2H3O2
Li2S + Mg(NO3)2 = LiNO3 + MgS =>
Li2S + Mg(NO3)2 = 2 LiNO3 + MgS
Sn + HCl + H2O = SnCl22H2O + H2 =>
Sn + 22 HCl + H2O = SnCl22H2O + 11 H2
K3PO4 + Ca(NO3)2 = Ca3(PO4)2 + KNO3 =>
2 K3PO4 + 3 Ca(NO3)2 = Ca3(PO4)2 + 6 KNO3
NH4NO3 + C7H5N3O6 = CO2 + H2O + N2 =>
21 NH4NO3 + 2 C7H5N3O6 = 14 CO2 + 47 H2O + 24 N2
Bi + KI = BiI + K =>
Bi + KI = BiI + K
Mg + C2H6O = MgO + C2H6 =>
Mg + C2H6O = MgO + C2H6
PbCrO4 + HCl + FeSO4 = PbCl2 + Cr2(SO4)3 + FeCl3 + H2O + Fe2(SO4)3 =>
2 PbCrO4 + 16 HCl + 6 FeSO4 = 2 PbCl2 + Cr2(SO4)3 + 4 FeCl3 + 8 H2O + Fe2(SO4)3
Na2SO4(aq) + BaBr2(aq) = NaBr(aq) + BaSO4(aq) =>
Na2SO4(aq) + BaBr2(aq) = 2 NaBr(aq) + BaSO4(aq)
CH3 + NO2 = N2 + CO2 + H2O =>
8 CH3 + 14 NO2 = 7 N2 + 8 CO2 + 12 H2O
CuCl2 + HCHO + NaOH = Cu2(OH)2 + HCOONa + H2O + NaCl =>
2 CuCl2 + HCHO + 5 NaOH = Cu2(OH)2 + HCOONa + 2 H2O + 4 NaCl
Sc2O3 = Sc2 + O3 =>
Sc2O3 = Sc2 + O3
P8 + O2 = P4O10 =>
P8 + 10 O2 = 2 P4O10
NH4Cl(aq) + LiOH(aq) = NH4(OH)(s) + LiCl(aq) =>
NH4Cl(aq) + LiOH(aq) = NH4(OH)(s) + LiCl(aq)
FeCl3 + KCl = KFeCl4 =>
FeCl3 + KCl = KFeCl4
(NH4)3PO4 + C4H6O4Ba = NH4C2H3O2 + Ba3(PO4)2 =>
2(NH4)3PO4 + 3 C4H6O4Ba = 6 NH4C2H3O2 + Ba3(PO4)2
SnCl2 + Na2CO3 = Sn(CO3) + NaCl =>
SnCl2 + Na2CO3 = Sn(CO3) + 2 NaCl
CuI + H2SO4 + KMnO4 = CuSO4 + I2 + MnSO4 + K2SO4 + H2O =>
10 CuI + 16 H2SO4 + 4 KMnO4 = 10 CuSO4 + 5 I2 + 4 MnSO4 + 2 K2SO4 + 16 H2O
AgN03(aq) + Cu(s) = Cu(N03)2(aq) + Ag(s) =>
2 AgN03(aq) + Cu(s) = Cu(N03)2(aq) + 2 Ag(s)
(NH2)2CO + KOH = K2CO3 + N + H =>
(NH2)2CO + 2 KOH = K2CO3 + 2 N + 6 H
K[Al(OH)4] + CO2 = KHCO3 + Al(OH)3 =>
K[Al(OH)4] + CO2 = KHCO3 + Al(OH)3
NaOH(aq) + C8H5KO4(aq) = NaC8H4KO4(aq) + H2O(l) =>
NaOH(aq) + C8H5KO4(aq) = NaC8H4KO4(aq) + H2O(l)
HCOH + O2 = HCOOH =>
2 HCOH + O2 = 2 HCOOH
Sn + PbO2 = SnO + Pb =>
2 Sn + PbO2 = 2 SnO + Pb
C6H5OH + Ca(OH)2 = (C6H5O)2Ca + H2O =>
2 C6H5OH + Ca(OH)2 = (C6H5O)2Ca + 2 H2O
CuS(s) + HBr(aq) = CuBr2(aq) + H2S(g) =>
CuS(s) + 2 HBr(aq) = CuBr2(aq) + H2S(g)
Na2[Zn(OH)4] + H2SO4 = Zn(OH)2 + Na2SO4 + H2O =>
Na2[Zn(OH)4] + H2SO4 = Zn(OH)2 + Na2SO4 + 2 H2O
XOH + K2Cr2O7 + HCl = XO + KCl + CrCl3 + H2O =>
6 XOH + K2Cr2O7 + 8 HCl = 6 XO + 2 KCl + 2 CrCl3 + 7 H2O
C2H11OH + O2 = CO2 + H2O =>
2 C2H11OH + 9 O2 = 4 CO2 + 12 H2O
NH3(aq) + H2O(l) = NH4OH(l) =>
NH3(aq) + H2O(l) = NH4OH(l)
SO2 + SrO = Sr2(SO3)2 =>
2 SO2 + 2 SrO = Sr2(SO3)2
C2H2 + AgNO3 + H2O = AgCCAg + NH3 + O =>
C2H2 + 2 AgNO3 + 2 H2O = AgCCAg + 2 NH3 + 8 O
Fe + H2CO3 = Fe2(CO3)3 + H2 =>
2 Fe + 3 H2CO3 = Fe2(CO3)3 + 3 H2
Fe(ClO3)3 + K2S = Fe2S3 + KClO3 =>
2 Fe(ClO3)3 + 3 K2S = Fe2S3 + 6 KClO3
H2(g) + Br(l) = HBr(aq) =>
H2(g) + 2 Br(l) = 2 HBr(aq)
Sn + Ag(NO3) = Sn(NO3)4 + Ag =>
Sn + 4 Ag(NO3) = Sn(NO3)4 + 4 Ag
C7H8 + Na2CO3 + KMnO4 = H2O + KOH + MnO2 + NaC7H5O2 =>
13 C7H8 + 7 Na2CO3 + 16 KMnO4 = 9 H2O + 16 KOH + 16 MnO2 + 14 NaC7H5O2
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