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4 As + 5 O2 = 2 As2O5
Fe3C + CO2 = Fe3O4 + CO =>
Fe3C + 5 CO2 = Fe3O4 + 6 CO
NO2 + CaCO3 = Ca(NO3)2 + Ca(NO2)2 + CO2 =>
4 NO2 + 2 CaCO3 = Ca(NO3)2 + Ca(NO2)2 + 2 CO2
Cu3P = Cu + P =>
Cu3P = 3 Cu + P
Zn + (NO3)2 = Zn(NO3)2 =>
Zn + (NO3)2 = Zn(NO3)2
Cr(s) + HCl(aq) = CrCl2(aq) + H2(g) =>
Cr(s) + 2 HCl(aq) = CrCl2(aq) + H2(g)
CuBr + KClO3 = KCl + Br2 + Cu2O =>
6 CuBr + KClO3 = KCl + 3 Br2 + 3 Cu2O
Na2S3 + KMnO4 + H2SO4 = Na2SO4 + K2SO4 + MnSO4 + H2O =>
Na2S3 + 4 KMnO4 + 4 H2SO4 = Na2SO4 + 2 K2SO4 + 4 MnSO4 + 4 H2O
NH4CO3 + HCl = HClCO3 + NH4 =>
NH4CO3 + HCl = HClCO3 + NH4
Co{2+} + SCN{-} = Co(SCN)4{-2} =>
Co{2+} + 4 SCN{-} = Co(SCN)4{-2}
K2SO4(aq) + Sr(NO3)2(aq) = SrSO4(s) + KNO3(aq) =>
K2SO4(aq) + Sr(NO3)2(aq) = SrSO4(s) + 2 KNO3(aq)
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
As + HNO3 + H2O = H3AsO4 + NO =>
3 As + 5 HNO3 + 2 H2O = 3 H3AsO4 + 5 NO
MgO + F2 = MgF2 + O2 =>
2 MgO + 2 F2 = 2 MgF2 + O2
(NH4)2S + ZnBr2 = ZnS + (NH4)2Br2 =>
(NH4)2S + ZnBr2 = ZnS + (NH4)2Br2
Be + LiOH + H2O = Li2[Be(OH)4] + H2 =>
Be + 2 LiOH + 2 H2O = Li2[Be(OH)4] + H2
As + O2 = As2O3 =>
4 As + 3 O2 = 2 As2O3
AgNO3(ac) + K2CrO4(ac) = Ag2CrO4(s) + KNO3(ac) =>
2 AgNO3(ac) + K2CrO4(ac) = Ag2CrO4(s) + 2 KNO3(ac)
SrCl2 + Br2 = SrBr2 + Cl2 =>
SrCl2 + Br2 = SrBr2 + Cl2
NiO(OH) + H2O + Cd = Ni(OH)2 + Cd(OH)2 =>
2 NiO(OH) + 2 H2O + Cd = 2 Ni(OH)2 + Cd(OH)2
As + Cl2 = AsCl5 =>
2 As + 5 Cl2 = 2 AsCl5
As + NaOH = Na3AsO3 + H2 =>
2 As + 6 NaOH = 2 Na3AsO3 + 3 H2
Sn + HNO3 = SnO2 + NO2 + H2O =>
Sn + 4 HNO3 = SnO2 + 4 NO2 + 2 H2O
Sb + O2 = Sb4O6 =>
4 Sb + 3 O2 = Sb4O6
HNO3 + FeCl2 = Fe(NO3)3 + H2O + HCl + NO2 =>
4 HNO3 + FeCl2 = Fe(NO3)3 + H2O + 2 HCl + NO2
Fe(NO3)2 + K3[Fe(CN)6] = KFe[Fe(CN)6] + KNO3 =>
Fe(NO3)2 + K3[Fe(CN)6] = KFe[Fe(CN)6] + 2 KNO3
ZnCl2 + AgNO3 = AgCl + Zn(NO3)2 =>
ZnCl2 + 2 AgNO3 = 2 AgCl + Zn(NO3)2
CuCl2 + NaCl = CuNa + Cl =>
CuCl2 + NaCl = CuNa + 3 Cl
Tl2O(s) + HCl(aq) = TlCl(aq) + H2O(l) =>
Tl2O(s) + 2 HCl(aq) = 2 TlCl(aq) + H2O(l)
Co + HClO2 = Co(ClO2)2 + H2 =>
Co + 2 HClO2 = Co(ClO2)2 + H2
Au2S3 + H2 = Au + H2S =>
Au2S3 + 3 H2 = 2 Au + 3 H2S
Sn + O2 = SnO =>
2 Sn + O2 = 2 SnO
As + O2 = As2O5 =>
4 As + 5 O2 = 2 As2O5
As + H2 = AsH3 =>
2 As + 3 H2 = 2 AsH3
H2O + Cd + Ni2O3 = Cd(OH)2 + Ni(OH)2 =>
3 H2O + Cd + Ni2O3 = Cd(OH)2 + 2 Ni(OH)2
Li3N + Mn(ClO3)4 = LiClO3 + Mn3N4 =>
4 Li3N + 3 Mn(ClO3)4 = 12 LiClO3 + Mn3N4
SnSe + HNO3 = SnO2 + SeO2 + NO + H2O =>
3 SnSe + 8 HNO3 = 3 SnO2 + 3 SeO2 + 8 NO + 4 H2O
KCl3(s) = KCl4(s) + KCl(s) =>
3 KCl3(s) = 2 KCl4(s) + KCl(s)
Ca(OH)2 + (HClO4) = Ca(ClO4)2 + H2O =>
Ca(OH)2 + 2(HClO4) = Ca(ClO4)2 + 2 H2O
CoCl4{2-} + H2O = Co(H2O)6{2+} + Cl{-} =>
CoCl4{2-} + 6 H2O = Co(H2O)6{2+} + 4 Cl{-}
FeCl3 + NaOH = NaCl3 + FeOH =>
FeCl3 + NaOH = NaCl3 + FeOH
N2(g) + O2(g) + H2O = HNO3(aq) = =>
2 N2(g) + 5 O2(g) + 2 H2O = 4 HNO3(aq)
SrO + Ag = Ag2O + Sr =>
SrO + 2 Ag = Ag2O + Sr
(b)N2O5 + H2O = HNO3 =>
(b)N2O5 + H2O = 2 HNO3
SF6(g) = S + F =>
SF6(g) = S + 6 F
C72 + O2 = CO =>
C72 + 36 O2 = 72 CO
Al2(SO4)3 + Zn(NO3)2 = Al2(NO3)2 + Zn(SO4)3 =>
Al2(SO4)3 + Zn(NO3)2 = Al2(NO3)2 + Zn(SO4)3
KMnO4 + Sn + KOH = K2MnO4 + K2[Sn(OH)4] =>
2 KMnO4 + Sn + 4 KOH = 2 K2MnO4 + K2[Sn(OH)4]
C6H8N2 + H2 = H2N(CH2)6NH2 =>
C6H8N2 + 4 H2 = H2N(CH2)6NH2
C2H6 + Cl = C4H + HCl =>
2 C2H6 + 11 Cl = C4H + 11 HCl
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