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2 CuS + 5 O = Cu2O + 2 SO2
CH3COOH(aq) + K2SO3(aq) = KC2H3O2(aq) + H2O(l) + SO2(g) =>
2 CH3COOH(aq) + K2SO3(aq) = 2 KC2H3O2(aq) + H2O(l) + SO2(g)
Na3N = Na + N =>
Na3N = 3 Na + N
CO2(g) + H2O(g) = C6H12O6(aq) + O2(g) =>
6 CO2(g) + 6 H2O(g) = C6H12O6(aq) + 6 O2(g)
Fe(OH)3 + CH3COOH = Fe(CH3COO)3 + H2O =>
Fe(OH)3 + 3 CH3COOH = Fe(CH3COO)3 + 3 H2O
C6H14 + Cl2 = CCl2 + HCl =>
C6H14 + 13 Cl2 = 6 CCl2 + 14 HCl
P4 + NaOH = PH3 + Na2HPO2 =>
P4 + 6 NaOH = PH3 + 3 Na2HPO2
C2H5Br + Na = C2H5 + NaBr =>
C2H5Br + Na = C2H5 + NaBr
PbS + HNO3 = Pb(NO3)2 + NO2 + S + H2O =>
PbS + 4 HNO3 = Pb(NO3)2 + 2 NO2 + S + 2 H2O
IO3{-} + HSO3{-} + H2O = I{-} + SO4{2-} + H3O{+} =>
IO3{-} + 3 HSO3{-} + 3 H2O = I{-} + 3 SO4{2-} + 3 H3O{+}
FeCl2 + H2O2 = HClO + Fe(OH)3 =>
2 FeCl2 + 5 H2O2 = 4 HClO + 2 Fe(OH)3
(NH4)2SO3 + HCl = NH4 + Cl + SO2 + H2O =>
(NH4)2SO3 + 2 HCl = 2 NH4 + 2 Cl + SO2 + H2O
NH4Fe(SO4)2 + BaCl2 = NH4FeCl4 + BaSO4 =>
NH4Fe(SO4)2 + 2 BaCl2 = NH4FeCl4 + 2 BaSO4
C2H4 + KMnO4 = MnO2 + KOH + C2O4K2 + H2O =>
3 C2H4 + 10 KMnO4 = 10 MnO2 + 4 KOH + 3 C2O4K2 + 4 H2O
SrS + FeBr2 = FeS + SrBr2 =>
SrS + FeBr2 = FeS + SrBr2
CaS + K3PO4 = Ca3(PO4)2 + K2S =>
3 CaS + 2 K3PO4 = Ca3(PO4)2 + 3 K2S
AgNo3(aq) + HCl(aq) = AgCl(s) + HNo3(aq) =>
AgNo3(aq) + HCl(aq) = AgCl(s) + HNo3(aq)
H2SO3 + K(OH) = K(HSO3) + H2O =>
H2SO3 + K(OH) = K(HSO3) + H2O
MgO + C6H8O7 = C12H10Mg3O14 + H2O =>
3 MgO + 2 C6H8O7 = C12H10Mg3O14 + 3 H2O
FeCl3 + HBr = FeBr3 + HCl =>
FeCl3 + 3 HBr = FeBr3 + 3 HCl
Li3P + O2 = Li2O + P2O5 =>
2 Li3P + 4 O2 = 3 Li2O + P2O5
H + Cl + O2 = HClO =>
2 H + 2 Cl + O2 = 2 HClO
KCl(aq) + NaOH(aq) = KOH + NaCl =>
KCl(aq) + NaOH(aq) = KOH + NaCl
Na + FeBr3 = Na3FeBr3 =>
3 Na + FeBr3 = Na3FeBr3
CH2(OH)CH2CH3 + CuO = CH3COCH3 + Cu + H2O =>
CH2(OH)CH2CH3 + CuO = CH3COCH3 + Cu + H2O
BaCO3 + H2O = BaO + H2CO3 =>
BaCO3 + H2O = BaO + H2CO3
O3 = O2 =>
2 O3 = 3 O2
Al + HCl = AlCl3 + H2 =>
2 Al + 6 HCl = 2 AlCl3 + 3 H2
HNO3(aq) + H2O(l) = H3NO4 =>
HNO3(aq) + H2O(l) = H3NO4
PbI2 + HCl = PbCl2 + H + I =>
PbI2 + 2 HCl = PbCl2 + 2 H + 2 I
C4H8O2 + NaOH = C2H3NaO2 + C2H6O =>
C4H8O2 + NaOH = C2H3NaO2 + C2H6O
Na + N2 = Na2N =>
4 Na + N2 = 2 Na2N
KMnO4 + H2O = KOH + MnO2 + O =>
2 KMnO4 + H2O = 2 KOH + 2 MnO2 + 3 O
C6H12O6 = C2H5OH + CO2 =>
C6H12O6 = 2 C2H5OH + 2 CO2
SnCl2 + K2Cr2O7 + HCl = H2SnCl6 + KCl + CrCl3 + H2O =>
3 SnCl2 + K2Cr2O7 + 20 HCl = 3 H2SnCl6 + 2 KCl + 2 CrCl3 + 7 H2O
NaClO2 + H2SO4 = ClO2 + NaCl + Na2SO4 + H2O =>
5 NaClO2 + 2 H2SO4 = 4 ClO2 + NaCl + 2 Na2SO4 + 2 H2O
Sb(s) + O2(g) = Sb2O5(s) =>
4 Sb(s) + 5 O2(g) = 2 Sb2O5(s)
NO3 = NO2 + O2 =>
2 NO3 = 2 NO2 + O2
HClO + Ba(OH)2 = Ba(ClO)2 + H2O =>
2 HClO + Ba(OH)2 = Ba(ClO)2 + 2 H2O
Na + S + O2 = Na2SO3 =>
4 Na + 2 S + 3 O2 = 2 Na2SO3
BaCl2 + NaHSO4 = BaSO4 + NaCl + HCl =>
BaCl2 + NaHSO4 = BaSO4 + NaCl + HCl
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
HNO2 + KI = KNO3 + I + NO + H2O =>
4 HNO2 + KI = KNO3 + I + 3 NO + 2 H2O
HNO2 + KI = I2 + NO + KNO2 + H2O =>
4 HNO2 + 2 KI = I2 + 2 NO + 2 KNO2 + 2 H2O
NaClO + H2O = HClO + Na + OH =>
NaClO + H2O = HClO + Na + OH
Si + NaOH = NaSiO + H2 =>
2 Si + 2 NaOH = 2 NaSiO + H2
K2CO3 + H2O = KOH + CO2 =>
K2CO3 + H2O = 2 KOH + CO2
KHCO3(s) + HBr(aq) = KBr + H2CO3 =>
KHCO3(s) + HBr(aq) = KBr + H2CO3
NH2CONH2 + O2 = N2 + CO2 + H2O =>
2 NH2CONH2 + 3 O2 = 2 N2 + 2 CO2 + 4 H2O
AgNO3 + K2Cr2O7 = Ag2Cr2O7 + KNO3 =>
2 AgNO3 + K2Cr2O7 = Ag2Cr2O7 + 2 KNO3
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