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2 S + H2 = 2 SH
Zn + H2SO4 = ZnSO4 + H2S + H2O =>
4 Zn + 5 H2SO4 = 4 ZnSO4 + H2S + 4 H2O
H2SO4 + K(OH) = K2(SO4) + H2O =>
H2SO4 + 2 K(OH) = K2(SO4) + 2 H2O
Zn + H2SO4 = ZnSO4 + H2S + H2O =>
4 Zn + 5 H2SO4 = 4 ZnSO4 + H2S + 4 H2O
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
CaC2(s) + H2O(l) = Ca(OH)2(aq) + C2H2(g) =>
CaC2(s) + 2 H2O(l) = Ca(OH)2(aq) + C2H2(g)
S + H2 = SH =>
2 S + H2 = 2 SH
H2 + O2 = H2O =>
2 H2 + O2 = 2 H2O
Al + CuSO4 = Al2(SO4)3 + Cu =>
2 Al + 3 CuSO4 = Al2(SO4)3 + 3 Cu
FeCl3 + KSCN = Fe(SCN)3 + KCl =>
FeCl3 + 3 KSCN = Fe(SCN)3 + 3 KCl
CH3OH + NO3 = CO2 + H2O + N2 =>
2 CH3OH + 2 NO3 = 2 CO2 + 4 H2O + N2
CH3COCH3 + O2 = CO2 + H2O =>
CH3COCH3 + 4 O2 = 3 CO2 + 3 H2O
Na + Cl2 = NaCl =>
2 Na + Cl2 = 2 NaCl
NCl3 + H2O = NH3 + HOClbalance =>
NCl3 + 3 H2O = NH3 + 3 HOClbalance
Al2(SO4)3 + Ca(OH)2 = Al(OH)3 + CaSO4 =>
Al2(SO4)3 + 3 Ca(OH)2 = 2 Al(OH)3 + 3 CaSO4
Na2CO3 + K2CrO4 = Na2CrO3 + K2CO4 =>
Na2CO3 + K2CrO4 = Na2CrO3 + K2CO4
FeSO4 + KSCN = Fe(SCN)2 + K2SO4 =>
FeSO4 + 2 KSCN = Fe(SCN)2 + K2SO4
Br2 + OCl2 = BrOCl + BrCl =>
Br2 + OCl2 = BrOCl + BrCl
Fe(NO3)3 = FeO3 + NO2 =>
Fe(NO3)3 = FeO3 + 3 NO2
Ca(OH)2 + H2CO3 = CaCO3 + H2O =>
Ca(OH)2 + H2CO3 = CaCO3 + 2 H2O
HClO4 + NaOH = NaCl + H2O + O4 =>
HClO4 + NaOH = NaCl + H2O + O4
Co + KMn = CoMn + K =>
Co + KMn = CoMn + K
Mg + N2 = Mg3N2 =>
3 Mg + N2 = Mg3N2
Ba(OH)2 + H2SO4 = BaSO4 + H2O =>
Ba(OH)2 + H2SO4 = BaSO4 + 2 H2O
Cu{+2} + HNO3 = Cu(NO3)2 + NO2 + H2O =>
Cu{+2} + 4 HNO3 = Cu(NO3)2 + 2 NO2 + 2 H2O
PbS + HNO3 = PbSO4 + NO2 + H2O =>
PbS + 8 HNO3 = PbSO4 + 8 NO2 + 4 H2O
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
S + Cl2 = SCl2 =>
S + Cl2 = SCl2
BiOOH + SnO2{2-} = Bi + SnO3{2-} + H2O =>
2 BiOOH + 3 SnO2{2-} = 2 Bi + 3 SnO3{2-} + H2O
TiCl4 + Na = Ti + NaCl =>
TiCl4 + 4 Na = Ti + 4 NaCl
KMnO4 + Se + KOH = K2SeO3 + MnO2 + H2O =>
4 KMnO4 + 3 Se + 2 KOH = 3 K2SeO3 + 4 MnO2 + H2O
Na2SO4(s) + C(s) = Na2SO3 + CO2(g) =>
2 Na2SO4(s) + C(s) = 2 Na2SO3 + CO2(g)
Cu(NO3)2 + NaOH = Cu(OH)2 + NaNO3 =>
Cu(NO3)2 + 2 NaOH = Cu(OH)2 + 2 NaNO3
Na2SO4(s) + C(s) = Na2SO3 + CO2(g) =>
2 Na2SO4(s) + C(s) = 2 Na2SO3 + CO2(g)
Al + Fe2O3 = Al2O3 + Fe =>
2 Al + Fe2O3 = Al2O3 + 2 Fe
FeO + O2 = Fe2O3 =>
4 FeO + O2 = 2 Fe2O3
AlBr3 + K2So4 = KBr + Al2(So4)3 =>
2 AlBr3 + 3 K2So4 = 6 KBr + Al2(So4)3
Cu(OH)2 = CuO + H2O =>
Cu(OH)2 = CuO + H2O
CO + H2O = CO2 + H2 =>
CO + H2O = CO2 + H2
K + MgBr = KBr + Mg =>
K + MgBr = KBr + Mg
Pb(CH3COO)2 + H2S = PbS + CH3COOH =>
Pb(CH3COO)2 + H2S = PbS + 2 CH3COOH
Co + KMnO4 = Co(MnO4)2 + K =>
Co + 2 KMnO4 = Co(MnO4)2 + 2 K
Ni(NO3)2 + NaOH = Ni(OH)2 + NaNO3 =>
Ni(NO3)2 + 2 NaOH = Ni(OH)2 + 2 NaNO3
ZnS + O2 = ZnO + SO2 =>
2 ZnS + 3 O2 = 2 ZnO + 2 SO2
KOH + KIO3 + (PH4)2S = K2SO4 + P + KI + H2O =>
6 KOH + 7 KIO3 + 3(PH4)2S = 3 K2SO4 + 6 P + 7 KI + 15 H2O
S + O = SO3 =>
S + 3 O = SO3
S + O2 = SO3 =>
2 S + 3 O2 = 2 SO3
HNO3 + Sr(OH)2 = Sr(NO3)2 + H2O =>
2 HNO3 + Sr(OH)2 = Sr(NO3)2 + 2 H2O
CuO + H2SO4 = CuSO4 + H2O =>
CuO + H2SO4 = CuSO4 + H2O
FeH + HCl = FeCl + H2 =>
FeH + HCl = FeCl + H2
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