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2 HCOOH + 2 Ca = 2(HCOO)Ca + H2
Br2(l) + NaI(aq) = I2 + NaBr =>
Br2(l) + 2 NaI(aq) = I2 + 2 NaBr
BaCl2(aq) + NaOH(aq) = Ba(OH)2(s) + NaCl(aq) =>
BaCl2(aq) + 2 NaOH(aq) = Ba(OH)2(s) + 2 NaCl(aq)
Ca(s) + Na2CO3(aq) = Na + CaCO3(s) =>
Ca(s) + Na2CO3(aq) = 2 Na + CaCO3(s)
C6H5CHOHCH2OH + CH3COOH = C6H5COOCCH3COOCH3 + H2O =>
C6H5CHOHCH2OH + 7 CH3COOH = 2 C6H5COOCCH3COOCH3 + 8 H2O
BaSO3 + H2O = BaO + H2SO3 =>
BaSO3 + H2O = BaO + H2SO3
K2SO4 + CaI2 = CaSO4 + KI =>
K2SO4 + CaI2 = CaSO4 + 2 KI
CuSO4*5H2O + Fe = FeSO4 + Cu + H2O =>
CuSO4*5H2O + Fe = FeSO4 + Cu + 5 H2O
Na + NaNO3 = Na2O + N2 =>
10 Na + 2 NaNO3 = 6 Na2O + N2
NH3 + CuO = N2 + Cu + HOH =>
2 NH3 + 3 CuO = N2 + 3 Cu + 3 HOH
Zn(OH)2 + H(NO3) = Zn(NO3)2 + H2O =>
Zn(OH)2 + 2 H(NO3) = Zn(NO3)2 + 2 H2O
C8H10 = C6H6 + C2H4 =>
C8H10 = C6H6 + C2H4
Mn2S3 + KMnO4 + H2O = MnO2 + K2SO4 + KOH =>
3 Mn2S3 + 26 KMnO4 + 4 H2O = 32 MnO2 + 9 K2SO4 + 8 KOH
H2S(g) + O2 = SO2 + H2O =>
2 H2S(g) + 3 O2 = 2 SO2 + 2 H2O
K(s) + Cl2(g) = KCl(s) =>
2 K(s) + Cl2(g) = 2 KCl(s)
NH3 + O2 = NO + H2O =>
4 NH3 + 5 O2 = 4 NO + 6 H2O
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
Al2C6 + H2O = Al(OH)3 + C2H2 =>
Al2C6 + 6 H2O = 2 Al(OH)3 + 3 C2H2
NaClH2O = NaOH + Cl2 + H2 =>
2 NaClH2O = 2 NaOH + Cl2 + H2
Pb(OH)2 + HCl = H2O + PbCl2 =>
Pb(OH)2 + 2 HCl = 2 H2O + PbCl2
FeOOH + H3PO4 = FePO4 + H2O =>
FeOOH + H3PO4 = FePO4 + 2 H2O
CHCOONa + Na + H2SO4 = CH3COOH + Na2SO4 =>
2 CHCOONa + 4 Na + 3 H2SO4 = 2 CH3COOH + 3 Na2SO4
XFe(OH)2 + XBaSO4 = XFeSO4 + XBa(OH)2 =>
XFe(OH)2 + XBaSO4 = XFeSO4 + XBa(OH)2
CaO + SO = CaS + O2 =>
CaO + SO = CaS + O2
HCl + Na2SO4 = NaCl + H2SO4 =>
2 HCl + Na2SO4 = 2 NaCl + H2SO4
KNO2 = K2O + N2 + O2 =>
4 KNO2 = 2 K2O + 2 N2 + 3 O2
sodiumcarbonate + water = sodiumoxide + hydrogencarbonate =>
Na2CO3 + H2O = Na2O + H2CO3
CuCO3(s) + H2SO4(aq) = CuSO4(aq) + H2O(l) + CO2(g) =>
CuCO3(s) + H2SO4(aq) = CuSO4(aq) + H2O(l) + CO2(g)
N2O2 + H2O = NH3 + O2 =>
2 N2O2 + 6 H2O = 4 NH3 + 5 O2
MgSO4Al2(SO4)3 = Mg(SO4)3Al2SO4 =>
MgSO4Al2(SO4)3 = Mg(SO4)3Al2SO4
Ca(NO3)2 + NH4OH = Ca(OH)2 + NH4(NO3) =>
Ca(NO3)2 + 2 NH4OH = Ca(OH)2 + 2 NH4(NO3)
MnO2 + H2SO4 = Mn(SO4)2 + H2O =>
MnO2 + 2 H2SO4 = Mn(SO4)2 + 2 H2O
CsCl + CaS = Cs2S + CaCl2 =>
2 CsCl + CaS = Cs2S + CaCl2
Ni(OH)2 + (NH4)2SO4 = NiSO4 + NH4(OH) =>
Ni(OH)2 + (NH4)2SO4 = NiSO4 + 2 NH4(OH)
NaClO3 + Ba(C2H3O2)2 = Ba(ClO3)2 + NaC2H3O2 =>
2 NaClO3 + Ba(C2H3O2)2 = Ba(ClO3)2 + 2 NaC2H3O2
CH3 + Cl2 = CH3Cl =>
2 CH3 + Cl2 = 2 CH3Cl
He = He2 =>
2 He = He2
NH4NO3 + C8H8 = CO2 + H2O + N2 =>
20 NH4NO3 + C8H8 = 8 CO2 + 44 H2O + 20 N2
Ca(s) + Na2CO3(aq) = Na + CaCO3(s) =>
Ca(s) + Na2CO3(aq) = 2 Na + CaCO3(s)
C3H6 + O2 = CO2 + H2O =>
2 C3H6 + 9 O2 = 6 CO2 + 6 H2O
N2H4(l) + N2O4(l) = N2(g) + H2O(g) =>
2 N2H4(l) + N2O4(l) = 3 N2(g) + 4 H2O(g)
CH4 + H2O = CO + H2 =>
CH4 + H2O = CO + 3 H2
C3H8 + O2 = CO2 + H2O =>
C3H8 + 5 O2 = 3 CO2 + 4 H2O
Al + H3PO4 = AlPO4 + H2 =>
2 Al + 2 H3PO4 = 2 AlPO4 + 3 H2
B2Br6 + HNO3 = B(NO3)3 + HBr =>
B2Br6 + 6 HNO3 = 2 B(NO3)3 + 6 HBr
Mg(NO3)2 + CaI2 = Ca(NO3)2 + MgI2 =>
Mg(NO3)2 + CaI2 = Ca(NO3)2 + MgI2
Mg(NO3)2 + Na2SO4 = MgSO4 + Na2(NO3)2 =>
Mg(NO3)2 + Na2SO4 = MgSO4 + Na2(NO3)2
KOH + H2O2 + Cr(OH)3 = K2CrO4 + H2O =>
4 KOH + 3 H2O2 + 2 Cr(OH)3 = 2 K2CrO4 + 8 H2O
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
As + NaOH = Na3AsO3 + H2 =>
2 As + 6 NaOH = 2 Na3AsO3 + 3 H2
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