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2 HgO = 2 Hg + O2
SO2 + Na2CO3 = Na2S2O5 + CO2 =>
2 SO2 + Na2CO3 = Na2S2O5 + CO2
Al + Hg2(NO3)2 + H2O = Al(NO3)3 + Hg2O + H2 =>
2 Al + 3 Hg2(NO3)2 + 3 H2O = 2 Al(NO3)3 + 3 Hg2O + 3 H2
KMnO4 + H2S + NaOH = KNaMnO4 + S + H2O =>
2 KMnO4 + H2S + 2 NaOH = 2 KNaMnO4 + S + 2 H2O
Zn(g) + HCl(ac) = ZnCl2(ac) + H2(g) =>
Zn(g) + 2 HCl(ac) = ZnCl2(ac) + H2(g)
C2H6O2 + O2 = CO2 + H2O =>
2 C2H6O2 + 5 O2 = 4 CO2 + 6 H2O
Hg(O2)2 = Hg + O2 =>
Hg(O2)2 = Hg + 2 O2
HNO3 + P = HPO3 + NO2 + H2O =>
5 HNO3 + P = HPO3 + 5 NO2 + 2 H2O
H2C2 + Cl2 = HCl + HC2Cl =>
H2C2 + Cl2 = HCl + HC2Cl
Na2SO4 + Cu = Na2Cu + SO4 =>
Na2SO4 + Cu = Na2Cu + SO4
Al2OH + H2SO4 = OS + H3O4Al2 =>
Al2OH + H2SO4 = OS + H3O4Al2
AgCl(aq) + Ca(s) = CaCl2(aq) + Ag(s) =>
2 AgCl(aq) + Ca(s) = CaCl2(aq) + 2 Ag(s)
C6H5COOH + NaOH = C6H5COONa + H2O =>
C6H5COOH + NaOH = C6H5COONa + H2O
CaO + H2Cl2 = CaCl2 + H2O =>
CaO + H2Cl2 = CaCl2 + H2O
(a)H2SO4(aq) + Fe(s) = Fe2(SO4)3(aq) + H2(g) =>
3(a)H2SO4(aq) + 2 Fe(s) = Fe2(SO4)3(aq) + 3 H2(g)
Cl2 + Ca(OH) = CaCl2 + Ca(OCl)2 + H2O =>
4 Cl2 + 4 Ca(OH) = 3 CaCl2 + Ca(OCl)2 + 2 H2O
BaS + H2SO3 = BaSO3 + H2S =>
BaS + H2SO3 = BaSO3 + H2S
Rb2SO3 + CuCl2 + H2O = H2SO3 + Cu(OH)2 + RbCl =>
Rb2SO3 + CuCl2 + 2 H2O = H2SO3 + Cu(OH)2 + 2 RbCl
C3H8 + S8 = CS2 + H2S =>
4 C3H8 + 5 S8 = 12 CS2 + 16 H2S
Zn + CuSO4 = Cu + ZnSO4 =>
Zn + CuSO4 = Cu + ZnSO4
F{-} + Br2 = Br{-} + F2 =>
2 F{-} + Br2 = 2 Br{-} + F2
ZnCO3*Zn(OH)2 + HBr = ZnBr2 + H2O + CO2 =>
ZnCO3*Zn(OH)2 + 4 HBr = 2 ZnBr2 + 3 H2O + CO2
CH2(OH){-}CH(OH){-}CH2(OH) + K = CH2OK{-}CHOK{-}CH2OK + H2 =>
2 CH2(OH){-}CH(OH){-}CH2(OH) + 2 K = 2 CH2OK{-}CHOK{-}CH2OK + H2
NaOH + NH4NO3 = NH3 + H2O + NaNO3 =>
NaOH + NH4NO3 = NH3 + H2O + NaNO3
CaCO3 + CH3COOH = Ca(CH3COO)2 + H2CO3 =>
CaCO3 + 2 CH3COOH = Ca(CH3COO)2 + H2CO3
Fe + K3Fe(CN)6 = Fe4[Fe(CN)6] + K =>
4 Fe + K3Fe(CN)6 = Fe4[Fe(CN)6] + 3 K
Co(NO3)3 + K(OH) = K(NO3) + Co(OH)3 =>
Co(NO3)3 + 3 K(OH) = 3 K(NO3) + Co(OH)3
P4 + H2O = PH4 + H3PO4 =>
9 P4 + 64 H2O = 20 PH4 + 16 H3PO4
CH3(CH2)4OCH2CH3 + O2 = CO2 + H2O =>
2 CH3(CH2)4OCH2CH3 + 21 O2 = 14 CO2 + 16 H2O
Zn(OH)2 + OH{-} = ZnO2{2-} + H2O =>
Zn(OH)2 + 2 OH{-} = ZnO2{2-} + 2 H2O
NaOH + CaCO3 = Na2CO3 + Ca(OH)2 =>
2 NaOH + CaCO3 = Na2CO3 + Ca(OH)2
NaI(s) + Br2 = NaBr + I2 =>
2 NaI(s) + Br2 = 2 NaBr + I2
H{+} + C2O4{2-}(aq) + MnO4{-} = Mn{2+} + CO2 + H2O =>
16 H{+} + 5 C2O4{2-}(aq) + 2 MnO4{-} = 2 Mn{2+} + 10 CO2 + 8 H2O
PbO2(s) + HCl(ac) = PbCl2(ac) + Cl2(g) + H2O(l) =>
PbO2(s) + 4 HCl(ac) = PbCl2(ac) + Cl2(g) + 2 H2O(l)
Dy + Sb + Te = DySbTe =>
Dy + Sb + Te = DySbTe
Fe + HNO3 = Fe(NO3)3 + NO + H2O =>
Fe + 4 HNO3 = Fe(NO3)3 + NO + 2 H2O
KBr + Pb(NO2)2 = K(NO2) + PbBr2 =>
2 KBr + Pb(NO2)2 = 2 K(NO2) + PbBr2
KMnO4 + HCl = K3MnCl6 + MnCl2 + H2O + Cl2 =>
3 KMnO4 + 24 HCl = K3MnCl6 + 2 MnCl2 + 12 H2O + 7 Cl2
Al + CuCl22H2O = Cu + AlCl + H2O =>
22 Al + CuCl22H2O = Cu + 22 AlCl + H2O
K2S2O5 + NaOH = KOH + Na2S2O5 =>
K2S2O5 + 2 NaOH = 2 KOH + Na2S2O5
N + Ne = NNe =>
N + Ne = NNe
AsO2{-} + I2 + H2O = I{-} + AsO4{3-} + H{+} =>
AsO2{-} + I2 + 2 H2O = 2 I{-} + AsO4{3-} + 4 H{+}
Fe(NO3)3 + CH4N2O = Fe2O3 + CO2 + H2O + N2 =>
2 Fe(NO3)3 + 5 CH4N2O = Fe2O3 + 5 CO2 + 10 H2O + 8 N2
CH3(CH2)3CH3 + O2 = CO2 + H2O =>
CH3(CH2)3CH3 + 8 O2 = 5 CO2 + 6 H2O
C2H6 = C + H2 =>
C2H6 = 2 C + 3 H2
HNO2 + H2SO4 = HNO3 + SO2 + H2O =>
HNO2 + H2SO4 = HNO3 + SO2 + H2O
Ca5(PO4)3(OH) + H2O = H3PO4 + Ca(OH)2 =>
Ca5(PO4)3(OH) + 9 H2O = 3 H3PO4 + 5 Ca(OH)2
Cr(NO3)3 + Na2SiO3 = Cr2(SiO3)3 + NaNO3 =>
2 Cr(NO3)3 + 3 Na2SiO3 = Cr2(SiO3)3 + 6 NaNO3
NaI(aq) + HCl(aq) = NaCl + HI =>
NaI(aq) + HCl(aq) = NaCl + HI
MgO2 + H2SO4 = MgSO4 + O2 + H2O =>
2 MgO2 + 2 H2SO4 = 2 MgSO4 + O2 + 2 H2O
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