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CaCO3 = CaO + CO2
SO2 + H2O = H2SO3 =>
SO2 + H2O = H2SO3
FeCl2 + K2S = FeS + KCl =>
FeCl2 + K2S = FeS + 2 KCl
H2SO4 + NaOH = Na2SO4 + H2O =>
H2SO4 + 2 NaOH = Na2SO4 + 2 H2O
Pb(NO3)2 + K2CrO4 = PbCrO4 + KNO3 =>
Pb(NO3)2 + K2CrO4 = PbCrO4 + 2 KNO3
S + KNO3 + H20 = H2SO4 + N2 + K2SO2 =>
20 S + 20 KNO3 + H20 = 10 H2SO4 + 10 N2 + 10 K2SO2
Cr + SnCl = CrCl3 + Sn =>
Cr + 3 SnCl = CrCl3 + 3 Sn
Cr + SnCl4 = CrCl3 + Sn =>
4 Cr + 3 SnCl4 = 4 CrCl3 + 3 Sn
AgNO3 + NaOH = AgOH + NaNO3 =>
AgNO3 + NaOH = AgOH + NaNO3
Na2SO4 + CO = Na2S + CO2 =>
Na2SO4 + 4 CO = Na2S + 4 CO2
C2H5OH + O2 = CO2 + H20 =>
10 C2H5OH + 15 O2 = 20 CO2 + 3 H20
C2H5OH + O2 = CO2 + H2O =>
C2H5OH + 3 O2 = 2 CO2 + 3 H2O
SO2 + O2 = SO3 =>
2 SO2 + O2 = 2 SO3
HgO = Hg + O =>
HgO = Hg + O
C2H2 + O2 = CO2 + H2O =>
2 C2H2 + 5 O2 = 4 CO2 + 2 H2O
Zn + CuSO4 = ZnSO4 + Cu =>
Zn + CuSO4 = ZnSO4 + Cu
Cl2 + KI = KCl + I2 =>
Cl2 + 2 KI = 2 KCl + I2
Cu + S8 = Cu2S =>
16 Cu + S8 = 8 Cu2S
H2O2 = H2O + O2 =>
2 H2O2 = 2 H2O + O2
N + H = NH3 =>
N + 3 H = NH3
C8H8 + O2 = CO2 + H2O =>
C8H8 + 10 O2 = 8 CO2 + 4 H2O
KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2 =>
2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2
H + S = H2S =>
2 H + S = H2S
Li(ClO3) = LiCl + O =>
Li(ClO3) = LiCl + 3 O
CaC2 + H2O = Ca(OH)2 + C2H2 =>
CaC2 + 2 H2O = Ca(OH)2 + C2H2
AgNO3 + ZnCl = AgClZnNO3 =>
AgNO3 + ZnCl = AgClZnNO3
K2Cr2O7 + H2SO4 + C2H6O = Cr2(SO4)3 + K2SO4 + H2O + CH3COOH =>
2 K2Cr2O7 + 8 H2SO4 + 3 C2H6O = 2 Cr2(SO4)3 + 2 K2SO4 + 11 H2O + 3 CH3COOH
HNO3 + Gd2O3 = Gd2O3(NO3) + NO + H2O =>
4 HNO3 + 3 Gd2O3 = 3 Gd2O3(NO3) + NO + 2 H2O
NH4SCN + Ba(OH)2 = Ba(SCN)2 + NH3 + H2O =>
2 NH4SCN + Ba(OH)2 = Ba(SCN)2 + 2 NH3 + 2 H2O
KNO3 + H2SO4 + Hg = K2SO4 + HgSO4 + H2O + NO =>
2 KNO3 + 4 H2SO4 + 3 Hg = K2SO4 + 3 HgSO4 + 4 H2O + 2 NO
HNO3 + Gd2O3 = Gd + NO3 + H2O =>
6 HNO3 + Gd2O3 = 2 Gd + 6 NO3 + 3 H2O
NH3 + O2 = N2 + H2O =>
4 NH3 + 3 O2 = 2 N2 + 6 H2O
Al2O3 + C = Al + CO =>
Al2O3 + 3 C = 2 Al + 3 CO
Gd + NO3 = Gd(NO3) =>
Gd + NO3 = Gd(NO3)
Gd + NO3 = Gd(NO3)3 =>
Gd + 3 NO3 = Gd(NO3)3
S + HNO3 = H2SO4 + NO2 + H2O =>
S + 6 HNO3 = H2SO4 + 6 NO2 + 2 H2O
P4O10 + H2O = H3PO4 =>
P4O10 + 6 H2O = 4 H3PO4
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
Cu + HNO3 = Cu(NO3)2 + NO + H2O =>
3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O
HNO3 + Al(OH)3 = Al(NO3)3 + H2O =>
3 HNO3 + Al(OH)3 = Al(NO3)3 + 3 H2O
Zn + HCl = ZnCl2 + H2 =>
Zn + 2 HCl = ZnCl2 + H2
MgO + H2SO4 = MgSO4 + H2O =>
MgO + H2SO4 = MgSO4 + H2O
NH4Cl + Ba(OH)2 = NH3 + BaCl2 + H2O =>
2 NH4Cl + Ba(OH)2 = 2 NH3 + BaCl2 + 2 H2O
Li + HCl = LiCl + H2 =>
2 Li + 2 HCl = 2 LiCl + H2
HgO = Hg + O2 =>
2 HgO = 2 Hg + O2
H2 + I2 = HI =>
H2 + I2 = 2 HI
Na2CO3 = Na2O + CO2 =>
Na2CO3 = Na2O + CO2
SiO2 + C = SiC + CO =>
SiO2 + 3 C = SiC + 2 CO
Al + Cu(NO3)2 = Al(NO3)3 + Cu =>
2 Al + 3 Cu(NO3)2 = 2 Al(NO3)3 + 3 Cu
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