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2 Ba + O2 = 2 BaO
N2O4 + KI = KNO3 + NO + I2 =>
2 N2O4 + 2 KI = 2 KNO3 + 2 NO + I2
H2Se + Cu(OH)2 = H2O + Cu(HSe)2 =>
2 H2Se + Cu(OH)2 = 2 H2O + Cu(HSe)2
Ag2S + HNO3 = S + AgNO3 + NO + H2O =>
3 Ag2S + 8 HNO3 = 3 S + 6 AgNO3 + 2 NO + 4 H2O
Al + NaOH = Na3AlO3 + H2 =>
2 Al + 6 NaOH = 2 Na3AlO3 + 3 H2
NaOH + HCl = NaCl + HOH =>
NaOH + HCl = NaCl + HOH
Cu2S + CaCl2 = CuCl + CaS =>
Cu2S + CaCl2 = 2 CuCl + CaS
KCl + NH4NO3 = KNO3 + NH4Cl =>
KCl + NH4NO3 = KNO3 + NH4Cl
Cu + AgNO3 = CuNO3 + Ag =>
Cu + AgNO3 = CuNO3 + Ag
AsCl5 + H2O = H3AsO4 + HCl =>
AsCl5 + 4 H2O = H3AsO4 + 5 HCl
HNO3 + Ca2CO3 = H2CO3 + Ca(NO3) =>
2 HNO3 + Ca2CO3 = H2CO3 + 2 Ca(NO3)
FeCl2 + H2 = HCl + Fe =>
FeCl2 + H2 = 2 HCl + Fe
NaAl(OH)4 + H2SO4 = Na2SO4 + Al(OH)3 + H2O =>
2 NaAl(OH)4 + H2SO4 = Na2SO4 + 2 Al(OH)3 + 2 H2O
HC2H3O2(aq) + NaHSO3(aq) = H2SO3 + NaC2H3O2 =>
HC2H3O2(aq) + NaHSO3(aq) = H2SO3 + NaC2H3O2
P4 + O2 = P2O5 =>
P4 + 5 O2 = 2 P2O5
NO2 + H2 = N2 + H2O =>
2 NO2 + 4 H2 = N2 + 4 H2O
Cu + AgNO3 = CuNO3 + Ag =>
Cu + AgNO3 = CuNO3 + Ag
Ca2 + (OH)2 + CO2 = CaCO3 + H2O =>
Ca2 + 2(OH)2 + 2 CO2 = 2 CaCO3 + 2 H2O
Sr + Ag3P = Ag + Sr3P2 =>
3 Sr + 2 Ag3P = 6 Ag + Sr3P2
Na2SO3 + H2O + KMnO4 = Na2SO4 + KOH + MnO2 =>
3 Na2SO3 + H2O + 2 KMnO4 = 3 Na2SO4 + 2 KOH + 2 MnO2
CuFeS2 + O2 = CuO + Fe2O3 + SO2 =>
4 CuFeS2 + 13 O2 = 4 CuO + 2 Fe2O3 + 8 SO2
Na2[Pb(OH)6] + Cr2(SO4)3 + NaOH = Na2[Pb(OH)4] + Na2CrO4 + Na2SO4 + H2O =>
3 Na2[Pb(OH)6] + Cr2(SO4)3 + 10 NaOH = 3 Na2[Pb(OH)4] + 2 Na2CrO4 + 3 Na2SO4 + 8 H2O
HCl + NaOH = NaCl + H2O =>
HCl + NaOH = NaCl + H2O
HOC6H4COONa + CH3COCl = C9H8O4 + HCl + NaOH =>
HOC6H4COONa + 10 CH3COCl = 3 C9H8O4 + 10 HCl + NaOH
KFl + Mg(NO3)2 = K(NO3) + Fl2Mg =>
2 KFl + Mg(NO3)2 = 2 K(NO3) + Fl2Mg
H2SO3 + Ca(OH)2 = H2O + SO3Ca =>
H2SO3 + Ca(OH)2 = 2 H2O + SO3Ca
Cu + H2SO4 = CuSO4 + H2O + SO2 =>
Cu + 2 H2SO4 = CuSO4 + 2 H2O + SO2
Mg(OH)2 + Al2O3 = Al(OH)3 + MgO =>
3 Mg(OH)2 + Al2O3 = 2 Al(OH)3 + 3 MgO
NiCl3 + K2O = Ni2O3 + KCl =>
2 NiCl3 + 3 K2O = Ni2O3 + 6 KCl
Pb(NO3)2 + K2SO4 = K2Pb + SO4(NO3)2 =>
Pb(NO3)2 + K2SO4 = K2Pb + SO4(NO3)2
S6 = S4 =>
2 S6 = 3 S4
Fe(OH)3 = Fe2O3 + H2O =>
2 Fe(OH)3 = Fe2O3 + 3 H2O
H2(SO3) + AlI3 = HI + Al2(SO3)3 =>
3 H2(SO3) + 2 AlI3 = 6 HI + Al2(SO3)3
Cu2O(s) + O2(g) = CuO(s) =>
2 Cu2O(s) + O2(g) = 4 CuO(s)
C3H5O3{-} + MnO2 = HCO3{-} + Mn2{+} + H2O + H{+} =>
7 C3H5O3{-} + 24 MnO2 = 21 HCO3{-} + 12 Mn2{+} + 6 H2O + 2 H{+}
Cu + H2SO4 = CuSO4 + SO2 + H2O =>
Cu + 2 H2SO4 = CuSO4 + SO2 + 2 H2O
K2(Cr2O4)2 + H2SO4 + C2H5OH = Cr2(SO4)3 + K2SO4 + HC2H3O2 + H2O =>
2 K2(Cr2O4)2 + 14 H2SO4 + C2H5OH = 4 Cr2(SO4)3 + 2 K2SO4 + HC2H3O2 + 15 H2O
MgPO4 + H2O = Mg(OH)2 + H2PO4 =>
MgPO4 + 2 H2O = Mg(OH)2 + H2PO4
C2H5OH + PCl3 = C2H5Cl + H3PO3 =>
3 C2H5OH + PCl3 = 3 C2H5Cl + H3PO3
NaH3 + H2O = NaH4OH =>
NaH3 + H2O = NaH4OH
F2 + Al2O3 = AlF3 + O2 =>
6 F2 + 2 Al2O3 = 4 AlF3 + 3 O2
K3(PO4) + H2(SO4) = K2(SO4) + H3(PO4) =>
2 K3(PO4) + 3 H2(SO4) = 3 K2(SO4) + 2 H3(PO4)
Cu2O(s) + C(s) = Cu(s) + CO(g) =>
Cu2O(s) + C(s) = 2 Cu(s) + CO(g)
ZnO + HCl = ZnCl2 + H2O = =>
ZnO + 2 HCl = ZnCl2 + H2O
NH4NO2 = N + H2O =>
NH4NO2 = 2 N + 2 H2O
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
CH3CH2OCOCH3 + NH4 = CH3CONH2 + CH3CH2OH =>
5 CH3CH2OCOCH3 + 4 NH4 = 4 CH3CONH2 + 6 CH3CH2OH
Pb(NO3)2(aq) + KCl(aq) = K(NO3)2(aq) + PbCl(aq) =>
Pb(NO3)2(aq) + KCl(aq) = K(NO3)2(aq) + PbCl(aq)
P + H2O = H + P2O3 =>
2 P + 3 H2O = 6 H + P2O3
PbCrO4 + Na2SO4 = PbSO4 + Na2CrO4 =>
PbCrO4 + Na2SO4 = PbSO4 + Na2CrO4
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