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2 K2Cr2O7 = 2 K2Cr2O6 + O2
V(s) + O(g) = V(v)O(s) =>
V(s) + O(g) = V(v)O(s)
SrSO4 + KCl = K2SO4 + Cl2 + Sr =>
SrSO4 + 2 KCl = K2SO4 + Cl2 + Sr
Na2SO4 + Mn(NO3)2 = MnSO4 + NaNO3 =>
Na2SO4 + Mn(NO3)2 = MnSO4 + 2 NaNO3
HNO3 = N2 + H2O + O2 =>
4 HNO3 = 2 N2 + 2 H2O + 5 O2
C42H1O + O2 = CO2 + H2O =>
4 C42H1O + 167 O2 = 168 CO2 + 2 H2O
CeCl3 + KOH = KCl + Ce(OH)3 =>
CeCl3 + 3 KOH = 3 KCl + Ce(OH)3
Ni(NO3)3 + Al = Al(NO3)3 + Ni =>
Ni(NO3)3 + Al = Al(NO3)3 + Ni
MnO4{-} + H{+} + As2O3 = Mn{2+} + As2O5 + H2O =>
4 MnO4{-} + 12 H{+} + 5 As2O3 = 4 Mn{2+} + 5 As2O5 + 6 H2O
Al + ClO = AlO + Cl =>
Al + ClO = AlO + Cl
Fe0 + H2O = Fe3O4 + H2 =>
3 Fe0 + 4 H2O = Fe3O4 + 4 H2
Al(s) + HNO3(aq) = Al(NO3)3(aq) + NO(g) + H2O(l) =>
Al(s) + 4 HNO3(aq) = Al(NO3)3(aq) + NO(g) + 2 H2O(l)
Na2O* + H2O = NaOH =>
Na2O* + H2O = 2 NaOH
Mn(OH)2 + Br2 + KOH = KMnO4 + KBr + H2O =>
2 Mn(OH)2 + 5 Br2 + 12 KOH = 2 KMnO4 + 10 KBr + 8 H2O
Fe2 + H2(SO4) = H + Fe(SO4) =>
Fe2 + 2 H2(SO4) = 4 H + 2 Fe(SO4)
Mn3O = Mn + O2 =>
2 Mn3O = 6 Mn + O2
C + H2O = CO2 + H2 =>
C + 2 H2O = CO2 + 2 H2
CH3COCH2CH3 + I2 + NaOH = CHI3 + HCOONa + HI =>
CH3COCH2CH3 + 7 I2 + NaOH = 3 CHI3 + HCOONa + 5 HI
Al(s) + S2(g) = Al2S3(s) =>
4 Al(s) + 3 S2(g) = 2 Al2S3(s)
Mg + Fe2(SO4)3 = MgSO4 + Fe =>
3 Mg + Fe2(SO4)3 = 3 MgSO4 + 2 Fe
SrCl2 + AgNO3 = Sr(NO3)2 + AgCl =>
SrCl2 + 2 AgNO3 = Sr(NO3)2 + 2 AgCl
Pb{2+} + NO3{-} + NH3 + H2O = Pb2O(NO3)2 + NH4{+} =>
2 Pb{2+} + 2 NO3{-} + 2 NH3 + H2O = Pb2O(NO3)2 + 2 NH4{+}
CaCl2 + (NH4)2HPO4 + NH3 + H2O = Ca10(PO4)6(OH)2 + NH4Cl =>
10 CaCl2 + 6(NH4)2HPO4 + 8 NH3 + 2 H2O = Ca10(PO4)6(OH)2 + 20 NH4Cl
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
Ca + Al2O3 = CaO + Al =>
3 Ca + Al2O3 = 3 CaO + 2 Al
C2H4{+} + MnO4{-} + H{+} = CO2 + Mn{2+} + H2O =>
5 C2H4{+} + 11 MnO4{-} + 28 H{+} = 10 CO2 + 11 Mn{2+} + 24 H2O
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
C6H12O6 + CuSO4 = Cu2O + C6H12O7 + SO2 =>
3 C6H12O6 + 2 CuSO4 = Cu2O + 3 C6H12O7 + 2 SO2
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
Sn(OH)3{-} + Bi(OH)3 + OH{-} = Sn(OH)6{-2} + Bi =>
3 Sn(OH)3{-} + 2 Bi(OH)3 + 3 OH{-} = 3 Sn(OH)6{-2} + 2 Bi
C3H8 + O2 = CO2 + H2O =>
C3H8 + 5 O2 = 3 CO2 + 4 H2O
S + HNO3 = H2SO4 + NO2 + H2O =>
S + 6 HNO3 = H2SO4 + 6 NO2 + 2 H2O
C8H16 + O2 = CO2 + H2O =>
C8H16 + 12 O2 = 8 CO2 + 8 H2O
HC2H3O2(aq) + NaHSO3(ag) = H2O(l) + CO2(g) + HNaS(aq) =>
3 HC2H3O2(aq) + 4 NaHSO3(ag) = 6 H2O(l) + 6 CO2(g) + 4 HNaS(aq)
FeS2 + O2 = Fe224 + SO2 =>
224 FeS2 + 448 O2 = Fe224 + 448 SO2
(Cu(NH3)4)Cl2 + KCN + H2O = NH3 + NH4Cl + K2(Cu(CN)3) + KCNO + KCl =>
2(Cu(NH3)4)Cl2 + 7 KCN + H2O = 6 NH3 + 2 NH4Cl + 2 K2(Cu(CN)3) + KCNO + 2 KCl
K(OH) + HC1 = KC1 + H2O =>
K(OH) + HC1 = KC1 + H2O
Al2(SO4)3 + Ca(HCO3)2 = Al(OH)3 + Ca(SO4) + CO2 =>
Al2(SO4)3 + 3 Ca(HCO3)2 = 2 Al(OH)3 + 3 Ca(SO4) + 6 CO2
CH2O + Cu{2+} + OH{-} = HCOOH + Cu2O + H2O =>
CH2O + 2 Cu{2+} + 4 OH{-} = HCOOH + Cu2O + 2 H2O
Hg(NO3)2 + LiI = HgI2 + LiNO3 =>
Hg(NO3)2 + 2 LiI = HgI2 + 2 LiNO3
CH4 + H2O = H2 + CO =>
CH4 + H2O = 3 H2 + CO
Ca10F2P6O24 + H2SO4 = CaH4P2O8 + CaSO4 + HF =>
Ca10F2P6O24 + 7 H2SO4 = 3 CaH4P2O8 + 7 CaSO4 + 2 HF
Na2CO3 + Mn(NO3)2 = NaNO3 + Mn + (CO3)2 =>
2 Na2CO3 + 2 Mn(NO3)2 = 4 NaNO3 + 2 Mn + (CO3)2
NaCl + (NH4)(NO3) = NaNO3 + NH4Cl =>
NaCl + (NH4)(NO3) = NaNO3 + NH4Cl
CH3OH + K = CHOK + H2 =>
2 CH3OH + 2 K = 2 CHOK + 3 H2
Ba + C = BaC2 =>
Ba + 2 C = BaC2
O2 + NH3 = HNO3 + H2O =>
2 O2 + NH3 = HNO3 + H2O
LiOH + H2SO4 = LiSO3 + H2 + O2 =>
2 LiOH + 2 H2SO4 = 2 LiSO3 + 3 H2 + 2 O2
C8H10N4O3 + CH3OH + CO = C9H13N4O2 + COOH =>
4 C8H10N4O3 + 5 CH3OH + 7 CO = 4 C9H13N4O2 + 8 COOH
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