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4 K2Cr2O7 + 3 Na2S + 16 H2O = 8 Cr(OH)3 + 3 Na2SO4 + 8 KOH
K + O2 = K2O(s) =>
4 K + O2 = 2 K2O(s)
Te + KOH = K2Te + K2TeO3 + H2O =>
3 Te + 6 KOH = 2 K2Te + K2TeO3 + 3 H2O
HCl + K2O = KCl + H2O =>
2 HCl + K2O = 2 KCl + H2O
SnO2 + H2 = Sn + H2O =>
SnO2 + 2 H2 = Sn + 2 H2O
H2SO4 + Na2CO3 = Na2SO4 + H2O + CO2 =>
H2SO4 + Na2CO3 = Na2SO4 + H2O + CO2
NH3 + CuCl = Cu(NH3) + Cl =>
NH3 + CuCl = Cu(NH3) + Cl
HCl + MgO = MgCl2 + H2O =>
2 HCl + MgO = MgCl2 + H2O
Ag + H2SO4 = Ag2SO4 + SO2 + H2O =>
2 Ag + 2 H2SO4 = Ag2SO4 + SO2 + 2 H2O
K + H2O = KOH + H2 =>
2 K + 2 H2O = 2 KOH + H2
NaOH + CuCl2 = NaCl + Cu(OH)2 =>
2 NaOH + CuCl2 = 2 NaCl + Cu(OH)2
Fe + HCl = Fe3Cl2 + H2 =>
3 Fe + 2 HCl = Fe3Cl2 + H2
C20H70N10 + O2 = CO2 + H2O + N2 =>
2 C20H70N10 + 75 O2 = 40 CO2 + 70 H2O + 10 N2
BiCl3 + SnCl2 + KOH = Bi + K2SnO3 + KCl + H2O =>
2 BiCl3 + 3 SnCl2 + 18 KOH = 2 Bi + 3 K2SnO3 + 12 KCl + 9 H2O
C20H70N9 + O2 = CO2 + H2O + N2 =>
2 C20H70N9 + 75 O2 = 40 CO2 + 70 H2O + 9 N2
C20H70N5 + O2 = CO2 + H2O + N2 =>
2 C20H70N5 + 75 O2 = 40 CO2 + 70 H2O + 5 N2
HBr + CH3NH2 = CH3NH3 + Br2 =>
2 HBr + 2 CH3NH2 = 2 CH3NH3 + Br2
C20H70N10 + O2 = CO2 + H2O + N2 =>
2 C20H70N10 + 75 O2 = 40 CO2 + 70 H2O + 10 N2
Na{+} + Cl{-} = NaCl =>
Na{+} + Cl{-} = NaCl
S + O2 = S2O6 =>
2 S + 3 O2 = S2O6
PhCH3 + KMnO4 + H2SO4 = PhCOOH + K2SO4 + MnSO4 + H2O =>
5 PhCH3 + 6 KMnO4 + 9 H2SO4 = 5 PhCOOH + 3 K2SO4 + 6 MnSO4 + 14 H2O
CO + H2 = C8H18 + H2O =>
8 CO + 17 H2 = C8H18 + 8 H2O
FeO3 + CO = Fe + CO2 =>
FeO3 + 3 CO = Fe + 3 CO2
Na + H2O(l) = NaOH + H2 =>
2 Na + 2 H2O(l) = 2 NaOH + H2
C2H5OH + O2 = CO2 + H2O =>
C2H5OH + 3 O2 = 2 CO2 + 3 H2O
C + O = CO =>
C + O = CO
H2O2 + H2 = H2O =>
H2O2 + H2 = 2 H2O
Mg + HCl = MgCl + H =>
Mg + HCl = MgCl + H
Na2S2O3 + FeCl3 + H2O = Na2S2O4 + FeCl + HCl =>
Na2S2O3 + FeCl3 + H2O = Na2S2O4 + FeCl + 2 HCl
Na2S2O3 + FeCl3 + H2O = Na2S2O4 + FeCl2 + HCl =>
Na2S2O3 + 2 FeCl3 + H2O = Na2S2O4 + 2 FeCl2 + 2 HCl
H2O2 + H2S = H2SO4 + H2O =>
4 H2O2 + H2S = H2SO4 + 4 H2O
AgCO3 = AgO + CO2 =>
AgCO3 = AgO + CO2
Al(OH)3 + HCl = AlCl3 + H2O =>
Al(OH)3 + 3 HCl = AlCl3 + 3 H2O
Zn + HCl = ZnCl2 + H2 =>
Zn + 2 HCl = ZnCl2 + H2
CO + H2O = H2O2 + C =>
CO + H2O = H2O2 + C
CO2 + H2O = H2O2 + CO =>
CO2 + H2O = H2O2 + CO
C + H2SO4 = CO2 + SO2 + H2O =>
C + 2 H2SO4 = CO2 + 2 SO2 + 2 H2O
CO + H2O = H2O2 + H2C =>
CO + 3 H2O = 2 H2O2 + H2C
CO + H2O = H2O2 + (HC)2 =>
2 CO + 4 H2O = 3 H2O2 + (HC)2
CO + H2O = H2O2 + HC =>
2 CO + 4 H2O = 3 H2O2 + 2 HC
CO2 + H2O = H2O2 + HC =>
2 CO2 + 6 H2O = 5 H2O2 + 2 HC
Na2Cr2O7 + HCl = CrO2Cl2 + NaCl + H2O =>
Na2Cr2O7 + 6 HCl = 2 CrO2Cl2 + 2 NaCl + 3 H2O
CO2 + H2O = HO + HC =>
CO2 + 3 H2O = 5 HO + HC
CO2 + Fe = Fe2C + O2 =>
CO2 + 2 Fe = Fe2C + O2
Fe + O2 = FeO =>
2 Fe + O2 = 2 FeO
Fe2C + O2 = Fe + CO2 =>
Fe2C + O2 = 2 Fe + CO2
FeC + O2 = Fe + CO2 =>
FeC + O2 = Fe + CO2
Bi(OH)3 + NaHSnO2 = Bi + NaHSnO3 + H2O =>
2 Bi(OH)3 + 3 NaHSnO2 = 2 Bi + 3 NaHSnO3 + 3 H2O
H2 + CO2 = CO + H2O2 =>
H2 + 2 CO2 = 2 CO + H2O2
CuFeS2 + O2 = Cu + FeO + SO2 =>
2 CuFeS2 + 5 O2 = 2 Cu + 2 FeO + 4 SO2
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