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2 FeS2 + 19 H2O = Fe2O3 + 30 H + 4 H2SO4
KOH + H3SO4 = K3SO4 + HOH =>
3 KOH + H3SO4 = K3SO4 + 3 HOH
Ca + P = CaP =>
Ca + P = CaP
NaCl + Br2 = NaBr + BrCl =>
NaCl + Br2 = NaBr + BrCl
CdCl2 + NaOH = Cd + OH + NaCl =>
CdCl2 + 2 NaOH = Cd + 2 OH + 2 NaCl
P2O5 = P4 + O2 =>
2 P2O5 = P4 + 5 O2
Na2SO4 + BaCO3 = Na2CO3 + BaSO4 =>
Na2SO4 + BaCO3 = Na2CO3 + BaSO4
Cu + HNO3 = Cu(NO3)2 + NO + H2O =>
3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O
C6H5COOH + O2 = CO2 + H2O =>
2 C6H5COOH + 15 O2 = 14 CO2 + 6 H2O
CaO + HCl = Ca1Cl2 + H2O =>
CaO + 2 HCl = Ca1Cl2 + H2O
NaH + BCl3 = NaCl + B2H6 =>
6 NaH + 2 BCl3 = 6 NaCl + B2H6
S + O3 = SO3 =>
S + O3 = SO3
K2CrO7 + Na2S + H2SO4 = Cr2(SO4)3 + Na2SO4 + K2SO4 + H2O =>
8 K2CrO7 + 9 Na2S + 20 H2SO4 = 4 Cr2(SO4)3 + 9 Na2SO4 + 8 K2SO4 + 20 H2O
S + O3 = SO3 =>
S + O3 = SO3
Fe2(CO3)3(heat) = Fe2O3 + CO2 =>
Fe2(CO3)3(heat) = Fe2O3 + 3 CO2
S + O3 = SO3 =>
S + O3 = SO3
Br + AgI = BrAg + I2 =>
2 Br + 2 AgI = 2 BrAg + I2
P4(s) + Br2(l) = PBr3(l) =>
P4(s) + 6 Br2(l) = 4 PBr3(l)
Ca + P = CaP =>
Ca + P = CaP
S + O3 = SO3 =>
S + O3 = SO3
K2S + K2MnO4 + H2O = S + MnO2 + KOH =>
K2S + K2MnO4 + 2 H2O = S + MnO2 + 4 KOH
Ca + P = CaP =>
Ca + P = CaP
C2H6O + O2 = CO2 + H2O =>
C2H6O + 3 O2 = 2 CO2 + 3 H2O
Ca + P = CaP =>
Ca + P = CaP
Ca + P = Ca3P2 =>
3 Ca + 2 P = Ca3P2
Ca + P = CaP =>
Ca + P = CaP
Br + AgI = BrAg + I2 =>
2 Br + 2 AgI = 2 BrAg + I2
Cu + HNO3 = Cu(NO3)2 + NO + H2O =>
3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O
CoCl3 + Fe = FeCl2 + Co =>
2 CoCl3 + 3 Fe = 3 FeCl2 + 2 Co
KClO3 + C6H12O6 = KCl + CO + H2O =>
2 KClO3 + C6H12O6 = 2 KCl + 6 CO + 6 H2O
N2 + H2 = NH3 =>
N2 + 3 H2 = 2 NH3
Cr2O7{-2} + H{+} + {-} = Cr{+3} + H2O =>
Cr2O7{-2} + 14 H{+} + 6e = 2 Cr{+3} + 7 H2O
MnSO4 + NaOH + H2O2 = Na2SO4 + H2O + MnO2 =>
MnSO4 + 2 NaOH + H2O2 = Na2SO4 + 2 H2O + MnO2
KMnO4 + CaCl2 + H2SO4 = K2SO4 + MnSO4 + CaSO4 + H2O + Cl2 =>
2 KMnO4 + 5 CaCl2 + 8 H2SO4 = K2SO4 + 2 MnSO4 + 5 CaSO4 + 8 H2O + 5 Cl2
S + O3 = SO2 =>
3 S + 2 O3 = 3 SO2
Cu + AgCl = CuCl + Ag =>
Cu + AgCl = CuCl + Ag
S + O3 = SO2 =>
3 S + 2 O3 = 3 SO2
Al(NO3)3 + Na(OH) = Al(OH)3 + Na(NO3) =>
Al(NO3)3 + 3 Na(OH) = Al(OH)3 + 3 Na(NO3)
S + O3 = SO2 =>
3 S + 2 O3 = 3 SO2
PbCO3 + HCl = PbCl2 + CO2 + H2O =>
PbCO3 + 2 HCl = PbCl2 + CO2 + H2O
S + O3 = SO2 =>
3 S + 2 O3 = 3 SO2
Al + CrO4 = Al2(CrO4)3 =>
2 Al + 3 CrO4 = Al2(CrO4)3
S + O3 = SO2 =>
3 S + 2 O3 = 3 SO2
calciumhydroxide + carbondioxide = calciumcarbonate + water =>
Ca(OH)2 + CO2 = CaCO3 + H2O
CH3COOH + Na2CO3 = CH3COONa + H2O + CO2 =>
2 CH3COOH + Na2CO3 = 2 CH3COONa + H2O + CO2
KClO3 = KCl + O2 =>
2 KClO3 = 2 KCl + 3 O2
CuSO4*5H2O = CuSO4 + H2O =>
CuSO4*5H2O = CuSO4 + 5 H2O
V(OH)5 + HBr = VBr5 + H2O =>
V(OH)5 + 5 HBr = VBr5 + 5 H2O
Zn(s) + Fe(NO3)3(aq) = Zn(NO3)3(aq) + Fe(s) =>
Zn(s) + Fe(NO3)3(aq) = Zn(NO3)3(aq) + Fe(s)
C2H6 + O2 = CO2 + H2O =>
2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
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