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4 Cr + 3 O2 = 2 Cr2O3
Ca + H2SO4 = CaSO4 + H20 =>
10 Ca + 10 H2SO4 = 10 CaSO4 + H20
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
Pb(NO3)2 = PbO + NO2 + O2 =>
2 Pb(NO3)2 = 2 PbO + 4 NO2 + O2
Ca + O = CaO =>
Ca + O = CaO
Ca + H2SO4 = CaSO4 + H20 =>
10 Ca + 10 H2SO4 = 10 CaSO4 + H20
C(s) + S(s) = CS2(s) =>
C(s) + 2 S(s) = CS2(s)
N2H4 + HNO3 = H2O + N2 =>
5 N2H4 + 4 HNO3 = 12 H2O + 7 N2
Co3O4 = CoO + O2 =>
2 Co3O4 = 6 CoO + O2
Al + CuCl2 = AlCl3 + Cu =>
2 Al + 3 CuCl2 = 2 AlCl3 + 3 Cu
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
Fe3O4 = FeO + O2 =>
2 Fe3O4 = 6 FeO + O2
C4H10O + O2 = CO2 + H2O =>
C4H10O + 6 O2 = 4 CO2 + 5 H2O
AlCl3 + NH4OH = NH4Cl + Al(OH)3 =>
AlCl3 + 3 NH4OH = 3 NH4Cl + Al(OH)3
Mg + S = MgS =>
Mg + S = MgS
Zn + CuSO4 = ZnSO4 + Cu =>
Zn + CuSO4 = ZnSO4 + Cu
C + Cr2O7{2-} + H{+} = CO2 + Cr{3+} + H2O =>
3 C + 2 Cr2O7{2-} + 16 H{+} = 3 CO2 + 4 Cr{3+} + 8 H2O
NH3 + H = NH4 =>
NH3 + H = NH4
NaCl + AgNO3 = AgCl + NaNO3 =>
NaCl + AgNO3 = AgCl + NaNO3
Tb3O4 + HNO3 = Tb(NO3)3 + NO2 + H2O =>
Tb3O4 + 10 HNO3 = 3 Tb(NO3)3 + NO2 + 5 H2O
P(OH)3 + H2SO4 = H2O + P2(SO4)3 =>
2 P(OH)3 + 3 H2SO4 = 6 H2O + P2(SO4)3
Cu + HNO3 + H2O = (Cu(OH2)6)(NO3)2 + NO2 =>
Cu + 4 HNO3 + 4 H2O = (Cu(OH2)6)(NO3)2 + 2 NO2
KI + KIO3 + H2SO4 = I2 + K2SO4 + H2O =>
5 KI + KIO3 + 3 H2SO4 = 3 I2 + 3 K2SO4 + 3 H2O
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
CH3CH2OH + O2 = H2O + CH3COOH =>
CH3CH2OH + O2 = H2O + CH3COOH
KI + KIO3 + H2SO4 = I2 + K2SO4 + H2O =>
5 KI + KIO3 + 3 H2SO4 = 3 I2 + 3 K2SO4 + 3 H2O
CaSO3 + H3PO4 = CaPO4 + H3SO3 =>
CaSO3 + H3PO4 = CaPO4 + H3SO3
Cl + PI3 = PCl3 + I =>
3 Cl + PI3 = PCl3 + 3 I
(NH4)Co3 = NH3 + Co2 + H20 =>
20(NH4)Co3 = 20 NH3 + 30 Co2 + H20
NaOH + H2SO4 = Na2SO4 + H2O =>
2 NaOH + H2SO4 = Na2SO4 + 2 H2O
HCl + NaOH = H2O + NaCl =>
HCl + NaOH = H2O + NaCl
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
Fe2O3 + Al = Al2O3 + Fe =>
Fe2O3 + 2 Al = Al2O3 + 2 Fe
Mg + O2 = MgO =>
2 Mg + O2 = 2 MgO
KCIO3 = KCI + O2 =>
2 KCIO3 = 2 KCI + 3 O2
C7H16 + O2 = CO2 + H2O =>
C7H16 + 11 O2 = 7 CO2 + 8 H2O
SO2 + BA(OH)2 = BASO3 + H2O =>
SO2 + BA(OH)2 = BASO3 + H2O
CH3(CH2)2CH3 + O2 = CO2 + H2O =>
2 CH3(CH2)2CH3 + 13 O2 = 8 CO2 + 10 H2O
NaOH + H2So4 = H2O + Na2So4 =>
2 NaOH + H2So4 = 2 H2O + Na2So4
PbO = Pb2 + O2 =>
2 PbO = Pb2 + O2
NH3 + H{+} = NH4{+} =>
NH3 + H{+} = NH4{+}
BaCl2 + H2SO4 = BaSO4 + HCl =>
BaCl2 + H2SO4 = BaSO4 + 2 HCl
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
Ba(ClO4)2 + K2SO4 = BaSO4 + KClO4 =>
Ba(ClO4)2 + K2SO4 = BaSO4 + 2 KClO4
Zn + H2SO4 + H2O = (Zn(OH2)6)SO4 + H2 =>
Zn + H2SO4 + 6 H2O = (Zn(OH2)6)SO4 + H2
H2O = O2 + H2 =>
2 H2O = O2 + 2 H2
BaCl2 + H2SO4 = BaSO4 + HCl =>
BaCl2 + H2SO4 = BaSO4 + 2 HCl
CaSO3 + H3PO4 = CaPO4 + H2O + HSO2 =>
CaSO3 + H3PO4 = CaPO4 + H2O + HSO2
NaO + HCl = NaCl + HO =>
NaO + HCl = NaCl + HO
Zn + H2SO4 + H2O = (Zn(OH2)6)SO4 + SO2 =>
Zn + 2 H2SO4 + 4 H2O = (Zn(OH2)6)SO4 + SO2
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