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4 Cr + 3 O2 = 2 Cr2O3
S + HNO3 = SO2 + NO + H2S =>
3 S + 2 HNO3 = 2 SO2 + 2 NO + H2S
Mn7 + MnO4 = Mn(MnO4)7 =>
Mn7 + 49 MnO4 = 7 Mn(MnO4)7
P2O5 + C = P4 + CO =>
2 P2O5 + 10 C = P4 + 10 CO
Na2O + Ca = Na2CaO =>
Na2O + Ca = Na2CaO
C7H16 + KMnO4 + H2O = C7H16O2 + KOH + MnO2 =>
3 C7H16 + 4 KMnO4 + 2 H2O = 3 C7H16O2 + 4 KOH + 4 MnO2
Fe + CuOH = Cu + FeOH =>
Fe + CuOH = Cu + FeOH
ZnSO4(aq) + K2CO3(aq) = ZnCO3 + K2SO4 =>
ZnSO4(aq) + K2CO3(aq) = ZnCO3 + K2SO4
H2SO4 + Cu(OH)2 = CuSO4 + H2O =>
H2SO4 + Cu(OH)2 = CuSO4 + 2 H2O
Cu2CO3(OH)2 = CuO + CO2 + H2O =>
Cu2CO3(OH)2 = 2 CuO + CO2 + H2O
KBrO3 + SnCl2 + HCl = KBr + SnCl4 + H2O =>
KBrO3 + 3 SnCl2 + 6 HCl = KBr + 3 SnCl4 + 3 H2O
NaO2 = Na2O2O2 =>
2 NaO2 = Na2O2O2
FeCl3 + Bi(OH)5 = Fe(OH)3 + BiCl5 =>
5 FeCl3 + 3 Bi(OH)5 = 5 Fe(OH)3 + 3 BiCl5
Ba(OH)2 + HNO3 = Ba(NO3)2 + H2O =>
Ba(OH)2 + 2 HNO3 = Ba(NO3)2 + 2 H2O
Na2S2O3 + I2 = NaI + Na2S4O6 =>
2 Na2S2O3 + I2 = 2 NaI + Na2S4O6
Ag + NaOH = Ag(OH)2 + Na =>
Ag + 2 NaOH = Ag(OH)2 + 2 Na
Na2SO3 + S8 = Na2S2O3 =>
8 Na2SO3 + S8 = 8 Na2S2O3
Fe3O4 + H2(SO4) = FeSO4 + Fe2(SO4)3 + H2O =>
Fe3O4 + 4 H2(SO4) = FeSO4 + Fe2(SO4)3 + 4 H2O
Na2SO3 + KOH = Na2OH + KSO3 =>
Na2SO3 + KOH = Na2OH + KSO3
O2 = O3 =>
3 O2 = 2 O3
Na3[Cr(OH)6] + NaOH + PbO2 = Na2CrO4 + H2O + Na2PbO2 =>
2 Na3[Cr(OH)6] + 4 NaOH + 3 PbO2 = 2 Na2CrO4 + 8 H2O + 3 Na2PbO2
Ca + H2SO4 = CaSO4 + H2 =>
Ca + H2SO4 = CaSO4 + H2
Cr + S8 = Cr2S3 =>
16 Cr + 3 S8 = 8 Cr2S3
HOCH2CH3 + Na = H2O + NaC + H =>
HOCH2CH3 + 2 Na = H2O + 2 NaC + 4 H
KClO3 = KClO4 + KCl =>
4 KClO3 = 3 KClO4 + KCl
Ba(NO3)2 + Na3PO4 = Ba3(PO4)2 + Na2(NO3)2 =>
3 Ba(NO3)2 + 2 Na3PO4 = Ba3(PO4)2 + 3 Na2(NO3)2
Na2S + Cu(CH3COO)2 = Na(CH3COO) + CuS =>
Na2S + Cu(CH3COO)2 = 2 Na(CH3COO) + CuS
NO2 + H2O = HNO3 + NO =>
3 NO2 + H2O = 2 HNO3 + NO
Fe + H2O2 = O2 + H2Fe =>
Fe + H2O2 = O2 + H2Fe
C6H6COH + K2Cr2O7 + H2SO4 = C6H6COOH + Cr2(SO4)3 + K2SO4 + H2O =>
3 C6H6COH + K2Cr2O7 + 4 H2SO4 = 3 C6H6COOH + Cr2(SO4)3 + K2SO4 + 4 H2O
Cr(NO3)2 + Ba = Ba(NO3)2 + Cr =>
Cr(NO3)2 + Ba = Ba(NO3)2 + Cr
S + NaOH = Na2S + Na2SO3 + H2O =>
3 S + 6 NaOH = 2 Na2S + Na2SO3 + 3 H2O
Na2S + HCl = NaCl + H2S =>
Na2S + 2 HCl = 2 NaCl + H2S
AlCl2(s) + KOH(aq) = Al(OH)2(s) + KCl(aq) =>
AlCl2(s) + 2 KOH(aq) = Al(OH)2(s) + 2 KCl(aq)
N2 + O2 + Cl2 = NOCl =>
N2 + O2 + Cl2 = 2 NOCl
AgNO3 + (NH4)2S = Ag2S + NH4NO3 =>
2 AgNO3 + (NH4)2S = Ag2S + 2 NH4NO3
(NH4)2SO4(aq) + FeCl2(aq) = Fe(SO4) + NH4Cl =>
(NH4)2SO4(aq) + FeCl2(aq) = Fe(SO4) + 2 NH4Cl
CH4 = C2H2 + H2 =>
2 CH4 = C2H2 + 3 H2
H2SeO4 + HBr = H2Se + Br2 + H2O =>
H2SeO4 + 8 HBr = H2Se + 4 Br2 + 4 H2O
NaCl + AgSO = NaSO + AgCl =>
NaCl + AgSO = NaSO + AgCl
HMnO4 + Pb(NO3)2 + H2O = MnO2 + PbO2 + HNO3 =>
2 HMnO4 + 3 Pb(NO3)2 + 2 H2O = 2 MnO2 + 3 PbO2 + 6 HNO3
Cr(OH)3 + Ca(OH)2 = Ca3(CrO3)2 + H2O =>
2 Cr(OH)3 + 3 Ca(OH)2 = Ca3(CrO3)2 + 6 H2O
KCl + Na3[Co(NO2)6] = KNa2[Co(NO2)6] + NaCl =>
KCl + Na3[Co(NO2)6] = KNa2[Co(NO2)6] + NaCl
Na2SO4 + BaO2 = NaO + BaSO4 =>
Na2SO4 + BaO2 = 2 NaO + BaSO4
NH4ClO4 + Cu(NO3)2 = NH4(NO3) + Cu(ClO4)2 =>
2 NH4ClO4 + Cu(NO3)2 = 2 NH4(NO3) + Cu(ClO4)2
Ba(OH)2 + HNO3 = Ba(NO3)2 + H2O =>
Ba(OH)2 + 2 HNO3 = Ba(NO3)2 + 2 H2O
NaNO2 + CO2 = NaCNO4 =>
NaNO2 + CO2 = NaCNO4
C5H10Br2 + Zn = C5H10Br2Zn =>
C5H10Br2 + Zn = C5H10Br2Zn
C8H10 + Cl2 = C8H9Cl2 + HCl =>
2 C8H10 + 3 Cl2 = 2 C8H9Cl2 + 2 HCl
C18H19O9N + O2 = CO2 + H2O + C5H7O2N =>
2 C18H19O9N + 25 O2 = 26 CO2 + 12 H2O + 2 C5H7O2N
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