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4 CuS + 5 O2 = 4 SO2 + 2 Cu2O
Ca + H2Co3 = CaCo3 + H2 =>
Ca + H2Co3 = CaCo3 + H2
Mg(s) + Cl2(g) = MgCl =>
2 Mg(s) + Cl2(g) = 2 MgCl
OH + HCN = CN + H2O =>
OH + HCN = CN + H2O
Ca + NaCl = CaCl2 + Na =>
Ca + 2 NaCl = CaCl2 + 2 Na
Na2CO3 + FeCl3 = Fe2(CO3)3 + NaCl =>
3 Na2CO3 + 2 FeCl3 = Fe2(CO3)3 + 6 NaCl
HgS + HClO3 = S + HgCl2 + H2O + O2 =>
2 HgS + 4 HClO3 = 2 S + 2 HgCl2 + 2 H2O + 5 O2
CH3CH2CH3 + O2 = CO2 + H2O =>
CH3CH2CH3 + 5 O2 = 3 CO2 + 4 H2O
Mg + H2So4 = MgSo4 + H2 =>
Mg + H2So4 = MgSo4 + H2
CH3COOH + Pb = Pb(CH3COOH)2 =>
2 CH3COOH + Pb = Pb(CH3COOH)2
S + NaOH = Na2S + Na2S2O3 + H20 =>
50 S + 60 NaOH = 10 Na2S + 20 Na2S2O3 + 3 H20
Mg(s) + Cl2(g) = MgCl2(s) =>
Mg(s) + Cl2(g) = MgCl2(s)
Ca3P2 + HCl = CaCl2 + PH3 =>
Ca3P2 + 6 HCl = 3 CaCl2 + 2 PH3
CH3COOH + Pb = Pb(CH3COOH)2 =>
2 CH3COOH + Pb = Pb(CH3COOH)2
HCl + MnO2 = H2O + MnCl2 + Cl2 =>
4 HCl + MnO2 = 2 H2O + MnCl2 + Cl2
C + Fe2O3 = Fe + CO =>
3 C + Fe2O3 = 2 Fe + 3 CO
NaHCO3 + HCl = NaCl + CO2 + H2O =>
NaHCO3 + HCl = NaCl + CO2 + H2O
SiH4 + H2O = H2SiO3 + H{+} + e =>
SiH4 + 3 H2O = H2SiO3 + 8 H{+} + 8e
P4 + O2 = P2O5 =>
P4 + 5 O2 = 2 P2O5
C + O2 = CO =>
2 C + O2 = 2 CO
KMnO4 + Na2SO3 + KOH = K2MnO4 + Na2SO4 + H2O =>
2 KMnO4 + Na2SO3 + 2 KOH = 2 K2MnO4 + Na2SO4 + H2O
NaOH + CO2 = NaHCO3 =>
NaOH + CO2 = NaHCO3
Co(OH)2 + H2SO4 = CoSO4 + H2O =>
Co(OH)2 + H2SO4 = CoSO4 + 2 H2O
Al + HCl = AlCl3 + H2 =>
2 Al + 6 HCl = 2 AlCl3 + 3 H2
Na + H3PO4 = Na3PO4 + H2 =>
6 Na + 2 H3PO4 = 2 Na3PO4 + 3 H2
Cu + AgNO3 = Cu(NO3)2 + Ag =>
Cu + 2 AgNO3 = Cu(NO3)2 + 2 Ag
Co(OH)2 + H2SO4 = CoSO4 + H2O =>
Co(OH)2 + H2SO4 = CoSO4 + 2 H2O
H2SO4 + NaOH = Na2SO4 + H2O =>
H2SO4 + 2 NaOH = Na2SO4 + 2 H2O
Mn + CaCl2 = MnCl + Ca =>
2 Mn + CaCl2 = 2 MnCl + Ca
C3HN + O2 = CO2 + H2O + NO =>
4 C3HN + 15 O2 = 12 CO2 + 2 H2O + 4 NO
H2SO4(aq) + KOH(aq) = H2O(l) + K2SO4 =>
H2SO4(aq) + 2 KOH(aq) = 2 H2O(l) + K2SO4
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
Mn + CaCl2 = MnCl + Ca =>
2 Mn + CaCl2 = 2 MnCl + Ca
CH3COOH + Mg = Mg(CH3COOH)2 =>
2 CH3COOH + Mg = Mg(CH3COOH)2
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
Ca + Co2 = CaCo3 =>
2 Ca + 3 Co2 = 2 CaCo3
MnO2 + HCl = MnCl2 + Cl2 + H2O =>
MnO2 + 4 HCl = MnCl2 + Cl2 + 2 H2O
C2H5NH2 + O2 = CO2 + H20 + N2 =>
20 C2H5NH2 + 40 O2 = 40 CO2 + 7 H20 + 10 N2
CaCo3 + NaCl = CaCl2 + Na2Co3 =>
CaCo3 + 2 NaCl = CaCl2 + Na2Co3
Na2O2 + Na = Na2O =>
Na2O2 + 2 Na = 2 Na2O
Ca(OH)2 + SO2 = CaSO3 + H2O =>
Ca(OH)2 + SO2 = CaSO3 + H2O
Na2O + H2O = NaOH =>
Na2O + H2O = 2 NaOH
HCl + RbOH = H2O + RbCl =>
HCl + RbOH = H2O + RbCl
NaOH + H2SO4 = Na2SO4 + H2O =>
2 NaOH + H2SO4 = Na2SO4 + 2 H2O
Ca(ClO3)2 = CaCl2 + O2 =>
Ca(ClO3)2 = CaCl2 + 3 O2
KClO3 + FeSO4 + H2SO4 = KCl + Fe2(SO4)3 + H2O =>
KClO3 + 6 FeSO4 + 3 H2SO4 = KCl + 3 Fe2(SO4)3 + 3 H2O
MgSo4 + CaCo3 = MgCo3 + CaSo4 =>
MgSo4 + CaCo3 = MgCo3 + CaSo4
HNO3 + KI = H2O + I2 + KNO3 + NO2 =>
4 HNO3 + 2 KI = 2 H2O + I2 + 2 KNO3 + 2 NO2
KMnO4 + K2SO3 + H2SO4 = K2SO4 + MnSO4 + H2O =>
2 KMnO4 + 5 K2SO3 + 3 H2SO4 = 6 K2SO4 + 2 MnSO4 + 3 H2O
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
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