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4 Fe3O4(s) + O2(g) = 6 Fe2O3(s)
SO2 + Na2Cr2O7 + H2SO4 = Na2SO4 + Cr2S3O12 + H2O =>
3 SO2 + Na2Cr2O7 + H2SO4 = Na2SO4 + Cr2S3O12 + H2O
Fe + O2 = Fe2O3 =>
4 Fe + 3 O2 = 2 Fe2O3
Ca(OH)2 + HBr = CaBr2 + H2O =>
Ca(OH)2 + 2 HBr = CaBr2 + 2 H2O
Cr + O2 = Cr2O3 =>
4 Cr + 3 O2 = 2 Cr2O3
C6H6O3 + O2 = CO + H2O =>
C6H6O3 + 3 O2 = 6 CO + 3 H2O
Cu(NO3)2 + NaOH = Cu(OH)2 + NaNO3 =>
Cu(NO3)2 + 2 NaOH = Cu(OH)2 + 2 NaNO3
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
FeCl3 + NaOH = Fe(OH)3 + NaCl =>
FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl
NCl3(aq) + H2O(l) = NH3(aq) + HOCl(aq) =>
NCl3(aq) + 3 H2O(l) = NH3(aq) + 3 HOCl(aq)
P + Cl2 = PCl3 =>
2 P + 3 Cl2 = 2 PCl3
P3S7 + HNO3 + H2O = H3PO4 + H2SO4 + NO =>
P3S7 + 19 HNO3 + 2 H2O = 3 H3PO4 + 7 H2SO4 + 19 NO
Ni(ClO3)2 = NiCl2 + O2 =>
Ni(ClO3)2 = NiCl2 + 3 O2
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
Cu + HNO3 = Cu(NO3)2 + H2O + NO2 =>
Cu + 4 HNO3 = Cu(NO3)2 + 2 H2O + 2 NO2
Mg(CH3COO)2 + (NH4)2S = MgS + NH4CH3COO =>
Mg(CH3COO)2 + (NH4)2S = MgS + 2 NH4CH3COO
Fe + Cl2 + NH4OH = Fe(OH)3 + NH4Cl =>
2 Fe + 3 Cl2 + 6 NH4OH = 2 Fe(OH)3 + 6 NH4Cl
BeH2 + HBr = BeBrH + H2 =>
BeH2 + HBr = BeBrH + H2
NH4ClO4 = N2 + Cl2 + O2 + H2O =>
2 NH4ClO4 = N2 + Cl2 + 2 O2 + 4 H2O
Zn + Mg = ZnMg =>
Zn + Mg = ZnMg
Li2O + N2O3 = LiNO2 =>
Li2O + N2O3 = 2 LiNO2
Ni2O3 + Fe + H2O = Ni(OH)2 + Fe(OH)2 =>
Ni2O3 + Fe + 3 H2O = 2 Ni(OH)2 + Fe(OH)2
N2(g) + O2(g) + H2O = HNO3(aq) =>
2 N2(g) + 5 O2(g) + 2 H2O = 4 HNO3(aq)
C6H6 + O2 = CO2 + H2O =>
2 C6H6 + 15 O2 = 12 CO2 + 6 H2O
Ca3PO4 + C + SiO2 = CaSiO3 + CO + P4 =>
4 Ca3PO4 + 4 C + 12 SiO2 = 12 CaSiO3 + 4 CO + P4
C7H6O3 = C + H2O =>
C7H6O3 = 7 C + 3 H2O
K + N = K3N =>
3 K + N = K3N
HCl + LiOH = HOH + LiCl =>
HCl + LiOH = HOH + LiCl
C4H3FN2O2 + POCl3 = C4HCl2FN2 + H3PO4 =>
3 C4H3FN2O2 + 2 POCl3 = 3 C4HCl2FN2 + 2 H3PO4
H2O + SiO2 + Mg2SiO4 = Mg3Si2O5(OH)4 =>
4 H2O + SiO2 + 3 Mg2SiO4 = 2 Mg3Si2O5(OH)4
Al(OH)3 + H2SO4 = Al2(SO4)3 + H2O =>
2 Al(OH)3 + 3 H2SO4 = Al2(SO4)3 + 6 H2O
SiH3 + O3 = SiO2 + H2O3 =>
6 SiH3 + 13 O3 = 6 SiO2 + 9 H2O3
Sn + AuCl3 = SnCl3 + Au =>
Sn + AuCl3 = SnCl3 + Au
Sn2{+} + Hg = Sn + Hg2{+} =>
Sn2{+} + 2 Hg = 2 Sn + Hg2{+}
NH3(g) + O2(g) = NO(g) + H2O(g) =>
4 NH3(g) + 5 O2(g) = 4 NO(g) + 6 H2O(g)
HCl + Mg(OH)2 = MgCl2 + H + O =>
2 HCl + Mg(OH)2 = MgCl2 + 4 H + 2 O
Ca(OH)2 + CH3COOH = H2O + Ca(CH3COO)2 =>
Ca(OH)2 + 2 CH3COOH = 2 H2O + Ca(CH3COO)2
MgS + HClO3 = Mg(ClO3)2 + H2S =>
MgS + 2 HClO3 = Mg(ClO3)2 + H2S
Pb(OH)2 + HCl = H2O + PbCl2 =>
Pb(OH)2 + 2 HCl = 2 H2O + PbCl2
{-} + H{+} + MnO4{-} = Mn{2+} + H2O =>
5e + 8 H{+} + MnO4{-} = Mn{2+} + 4 H2O
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
Na3[Cr(oh)6] + Cl2 + NaOH = Na2CrO4 + NaCl + H2O =>
2 Na3[Cr(oh)6] + 39 Cl2 + 96 NaOH = 12 Na2CrO4 + 78 NaCl + 48 H2O
NO + H = N2O + H2O =>
2 NO + 2 H = N2O + H2O
Si + NaOH + H2O = Na2SiO3 + H2 =>
Si + 2 NaOH + H2O = Na2SiO3 + 2 H2
CaO + SiO2 = CaSiO3 =>
CaO + SiO2 = CaSiO3
Ba(C2H3O2)2 + Na2CrO4 = Na(C2H3O2) + BaCrO4 =>
Ba(C2H3O2)2 + Na2CrO4 = 2 Na(C2H3O2) + BaCrO4
HgO = Hg + O2 =>
2 HgO = 2 Hg + O2
Fe2O3 + CO = Fe + CO2 =>
Fe2O3 + 3 CO = 2 Fe + 3 CO2
Cu + AgNO3 = Cu(NO3)2 + Ag =>
Cu + 2 AgNO3 = Cu(NO3)2 + 2 Ag
HgS + HCl + HNO3 = HgCl2 + S + NO + H2O =>
3 HgS + 6 HCl + 2 HNO3 = 3 HgCl2 + 3 S + 2 NO + 4 H2O
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