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2 Co(NO3)3 + 3(NH4)2 + 3 S = Co2S3 + 6 NH4NO3
Na + H2SO4 = H2 + Na2SO4 =>
2 Na + H2SO4 = H2 + Na2SO4
Al(OH)3 + H2SO4 = Al2(SO4)3 + H2O =>
2 Al(OH)3 + 3 H2SO4 = Al2(SO4)3 + 6 H2O
H2SnO3 + NaOH + H2O = Na2[Sn(OH)6] =>
H2SnO3 + 2 NaOH + H2O = Na2[Sn(OH)6]
Cu2O + C = Cu + CO =>
Cu2O + C = 2 Cu + CO
Pb(NO3)2 + CaCl2 = PbCl2 + Ca(NO3)2 =>
Pb(NO3)2 + CaCl2 = PbCl2 + Ca(NO3)2
CH3CH2CH2OH + MnO4 = MnO2 + H2O + CH3CH2COOH =>
CH3CH2CH2OH + MnO4 = MnO2 + H2O + CH3CH2COOH
Ca3(PO4)2 = Ca + PO4 =>
Ca3(PO4)2 = 3 Ca + 2 PO4
H2SnO3 + KOH + H2O = K2[Sn(OH)6] =>
H2SnO3 + 2 KOH + H2O = K2[Sn(OH)6]
PbCl2 + NaOH = Pb(OH)2 + NaCl =>
PbCl2 + 2 NaOH = Pb(OH)2 + 2 NaCl
KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2 =>
2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2
H2SnO3 + HNO3 = Sn(NO3)4 + H2O =>
H2SnO3 + 4 HNO3 = Sn(NO3)4 + 3 H2O
H3PO4 + HCl = PCl5 + H2O =>
H3PO4 + 5 HCl = PCl5 + 4 H2O
H2 + Cl2 = HCl =>
H2 + Cl2 = 2 HCl
C2H5OH + O2 = CO2 + H2O =>
C2H5OH + 3 O2 = 2 CO2 + 3 H2O
KI + MnO2 + H2SO4 = K2SO4 + MnSO4 + H2O + I2 =>
2 KI + MnO2 + 2 H2SO4 = K2SO4 + MnSO4 + 2 H2O + I2
Na + Cl = NaCl =>
Na + Cl = NaCl
Na + Cl2 = NaCl =>
2 Na + Cl2 = 2 NaCl
FeS2 + O2 = Fe2O2 + SO2 =>
2 FeS2 + 5 O2 = Fe2O2 + 4 SO2
SnS + (NH4)2S2 = (NH4)2SnS3 =>
SnS + (NH4)2S2 = (NH4)2SnS3
Co(NO3)3 + (NH4)2S = Co2S3 + NH4NO3 =>
2 Co(NO3)3 + 3(NH4)2S = Co2S3 + 6 NH4NO3
HClO4 + P4O10 = H3PO4 + Cl2O7 =>
12 HClO4 + P4O10 = 4 H3PO4 + 6 Cl2O7
Pb + O2 = Pb2O =>
4 Pb + O2 = 2 Pb2O
Rb + S8 = Rb2S =>
16 Rb + S8 = 8 Rb2S
HCl(aq) + ZnS(s) = H + S + ZnCl =>
HCl(aq) + ZnS(s) = H + S + ZnCl
Na2S + Cu(NO3)2 = NaNO3 + CuS =>
Na2S + Cu(NO3)2 = 2 NaNO3 + CuS
Cu2O + C = Cu + CO =>
Cu2O + C = 2 Cu + CO
N2H4 = NH3 + N2 =>
3 N2H4 = 4 NH3 + N2
Na2B4O7 + H2O = HB4O7 + Na + OH =>
Na2B4O7 + H2O = HB4O7 + 2 Na + OH
N2H4 = NH3 + N2 =>
3 N2H4 = 4 NH3 + N2
K + O2 = K2O =>
4 K + O2 = 2 K2O
HCl(aq) + ZnS(s) = H2S + ZnCl2 =>
2 HCl(aq) + ZnS(s) = H2S + ZnCl2
CH3CH2CH2OH + MnO4{-} + H{+} = MnO2 + H2O + CH3CH2COOH =>
3 CH3CH2CH2OH + 4 MnO4{-} + 4 H{+} = 4 MnO2 + 5 H2O + 3 CH3CH2COOH
H2 + Cl2 = HCl =>
H2 + Cl2 = 2 HCl
C2 + CO2 = CO =>
C2 + 2 CO2 = 4 CO
HCl + O2 = H2O + Cl2 =>
4 HCl + O2 = 2 H2O + 2 Cl2
(NH4)2Cr2O7 = Cr2O3 + N2 + H2O =>
(NH4)2Cr2O7 = Cr2O3 + N2 + 4 H2O
Ca + YF2 = CaF2 + Y =>
Ca + YF2 = CaF2 + Y
Ca + O2 = Ca2O =>
4 Ca + O2 = 2 Ca2O
H3PO4 + Ca(OH)2 = Ca3(PO4)2 + H2O =>
2 H3PO4 + 3 Ca(OH)2 = Ca3(PO4)2 + 6 H2O
Ca + YF3 = CaF2 + Y =>
3 Ca + 2 YF3 = 3 CaF2 + 2 Y
Na + H2O = NaOH + H2 =>
2 Na + 2 H2O = 2 NaOH + H2
V2O5 + Al = V + Al2O3 =>
3 V2O5 + 10 Al = 6 V + 5 Al2O3
NaHCO3 = Na2CO3 + CO2 + H2O =>
2 NaHCO3 = Na2CO3 + CO2 + H2O
H2O + P4 + KOH = KH2PO2 + PH3 =>
3 H2O + P4 + 3 KOH = 3 KH2PO2 + PH3
Al(OH)3 = Al2O3 + H2O =>
2 Al(OH)3 = Al2O3 + 3 H2O
NaBr + Cl2 = Na2Cl + Br2 =>
4 NaBr + Cl2 = 2 Na2Cl + 2 Br2
SnS + (NH4)2S2 = SnS2 + (NH4)2S =>
SnS + (NH4)2S2 = SnS2 + (NH4)2S
H2SO4 + Na2CO3 = NaHCO3 + NaHSO4 =>
H2SO4 + Na2CO3 = NaHCO3 + NaHSO4
Cu + O2 = CuO =>
2 Cu + O2 = 2 CuO
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