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4 Zn + 5 H2SO4 = 4 ZnSO4 + H2S + 4 H2O
NiO + Al = Al2O3 + Ni =>
3 NiO + 2 Al = Al2O3 + 3 Ni
MgCl2 + AgNO3 = Mg(NO3)2 + AgCl =>
MgCl2 + 2 AgNO3 = Mg(NO3)2 + 2 AgCl
HCOOH + Cu = HCOOCu + H2 =>
2 HCOOH + 2 Cu = 2 HCOOCu + H2
Al4C3 + H2O = CH4 + Al(OH)3 =>
Al4C3 + 12 H2O = 3 CH4 + 4 Al(OH)3
NO2 + H2O + O2 = HNO3 =>
4 NO2 + 2 H2O + O2 = 4 HNO3
NiCl2(aq) + Na2CO3(aq) = Na2Cl2 + NiCO3 =>
NiCl2(aq) + Na2CO3(aq) = Na2Cl2 + NiCO3
NaOH + H2PO4 = NaHPO4 + H2O =>
NaOH + H2PO4 = NaHPO4 + H2O
HCOOH + K2O = HCOOK + H2O =>
2 HCOOH + K2O = 2 HCOOK + H2O
CA + H2O = CA(OH)2 + H2 =>
CA + 2 H2O = CA(OH)2 + H2
AlCl3 + Na3PO4 = AlPO4 + NaCl =>
AlCl3 + Na3PO4 = AlPO4 + 3 NaCl
Zn + HNO3 = Zn(NO3)2 + N2O + H2O =>
4 Zn + 10 HNO3 = 4 Zn(NO3)2 + N2O + 5 H2O
V + O2 = V2O5 =>
4 V + 5 O2 = 2 V2O5
HCOOH + KOH = HCOOK + H2O =>
HCOOH + KOH = HCOOK + H2O
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
B(OC2H5)3 + O2 = B2O3 + CO2 + H20 =>
4 B(OC2H5)3 + 21 O2 = 2 B2O3 + 24 CO2 + 3 H20
Al + HNO3 = Al(NO3)3 + NO2 + H2O =>
Al + 6 HNO3 = Al(NO3)3 + 3 NO2 + 3 H2O
NaHPO4 = NaPO4 + H2 =>
2 NaHPO4 = 2 NaPO4 + H2
Al + NaOH + H2O = Na[Al(OH)4] + H2 =>
2 Al + 2 NaOH + 6 H2O = 2 Na[Al(OH)4] + 3 H2
Ca + P = Ca3P2 =>
3 Ca + 2 P = Ca3P2
HCOOH + Na2CO3 = HCOONa + H2O + CO2 =>
2 HCOOH + Na2CO3 = 2 HCOONa + H2O + CO2
C6H12 + O2 = CO2 + H2O =>
C6H12 + 9 O2 = 6 CO2 + 6 H2O
Zn + HNO3 = Zn(NO3)2 + N2O + H2O =>
4 Zn + 10 HNO3 = 4 Zn(NO3)2 + N2O + 5 H2O
HCOOH + O2 = H2O + CO2 =>
2 HCOOH + O2 = 2 H2O + 2 CO2
Al + O2 = Al2O3 =>
4 Al + 3 O2 = 2 Al2O3
ZnO + H2 = Zn + H2O =>
ZnO + H2 = Zn + H2O
SO2 + O2 = SO3 =>
2 SO2 + O2 = 2 SO3
KOH + H3PO4 = K3PO4 + H2O =>
3 KOH + H3PO4 = K3PO4 + 3 H2O
KO2 + C = K2CO3 + CO2 =>
4 KO2 + 3 C = 2 K2CO3 + CO2
HCl + FeS = FeCl + HS =>
HCl + FeS = FeCl + HS
Na2CO3 + Mg2SO4 = Na2SO4 + Mg2CO3 =>
Na2CO3 + Mg2SO4 = Na2SO4 + Mg2CO3
KMnO4 + H2SO4 + CH3CHO = K2SO4 + MnSO4 + CH3COOH + H20 =>
20 KMnO4 + 30 H2SO4 + 80 CH3CHO = 10 K2SO4 + 20 MnSO4 + 80 CH3COOH + 3 H20
CaCO3 + HCl = CaCl2 + H2O + CO2 =>
CaCO3 + 2 HCl = CaCl2 + H2O + CO2
HCOOH + C2H5OH = HCOOC2H5 + H2O =>
HCOOH + C2H5OH = HCOOC2H5 + H2O
KNO3 + H2CO3 = K2CO3 + HNO3 =>
2 KNO3 + H2CO3 = K2CO3 + 2 HNO3
Fe2OH + HCl = Fe2Cl + H2O =>
Fe2OH + HCl = Fe2Cl + H2O
HClO4 + Ca(OH)2 = Ca(ClO4)2 + H2O =>
2 HClO4 + Ca(OH)2 = Ca(ClO4)2 + 2 H2O
((NH4)3(PO4)) = (H3PO4) + (NH3) =>
((NH4)3(PO4)) = (H3PO4) + 3(NH3)
CaS + H2O = Ca(HS)2 + Ca(OH)2 =>
2 CaS + 2 H2O = Ca(HS)2 + Ca(OH)2
Fe2OH + HCl = Fe2Cl + H2O =>
Fe2OH + HCl = Fe2Cl + H2O
CaCl2 + Na2CO3 = Ca2(CO3)2 + NaCl =>
2 CaCl2 + 2 Na2CO3 = Ca2(CO3)2 + 4 NaCl
KO2 + K = K2O =>
KO2 + 3 K = 2 K2O
Fe2OH + HCl = Fe2Cl + H2O =>
Fe2OH + HCl = Fe2Cl + H2O
FeS2 + O2 = Fe2O3 + SO2 =>
4 FeS2 + 11 O2 = 2 Fe2O3 + 8 SO2
SO = S + SO2 =>
2 SO = S + SO2
KOH + KOOCCH2CH2COOK = K2CO3 + CH3CH3 =>
2 KOH + KOOCCH2CH2COOK = 2 K2CO3 + CH3CH3
KOH + Na2CO3 = K2CO3 + NaOH =>
2 KOH + Na2CO3 = K2CO3 + 2 NaOH
C2H5OH + O2 = CO2 + H2O =>
C2H5OH + 3 O2 = 2 CO2 + 3 H2O
KCl + H2O2 = Cl2 + KOH =>
2 KCl + H2O2 = Cl2 + 2 KOH
P + Ag2O = Ag + P2O5 =>
2 P + 5 Ag2O = 10 Ag + P2O5
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