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20 HCl + 10 Na2Co3 = 20 NaCl + 15 Co2 + H20
NaOH + H2SO4 = Na2SO4 + H2O =>
2 NaOH + H2SO4 = Na2SO4 + 2 H2O
Na2O + H2O = NaOH =>
Na2O + H2O = 2 NaOH
methane + oxygen = carbondioxide + water =>
CH4 + 2 O2 = CO2 + 2 H2O
SeCl6 + O2 = SeO2 + Cl2 =>
SeCl6 + O2 = SeO2 + 3 Cl2
HCl + Na2Co3 = NaCl + Co2 + H20 =>
20 HCl + 10 Na2Co3 = 20 NaCl + 15 Co2 + H20
KMNO4 + HCl = KCl + MNCl2 + H2O + Cl2 =>
2 KMNO4 + 16 HCl = 2 KCl + 2 MNCl2 + 8 H2O + 5 Cl2
nitrogen + hydrogen = ammonia =>
N2 + 3 H2 = 2 NH3
CaO + H2O = Ca(OH)2 =>
CaO + H2O = Ca(OH)2
Cu + HNO3 = Cu(NO3)2 + NO2 + H2O =>
Cu + 4 HNO3 = Cu(NO3)2 + 2 NO2 + 2 H2O
zinc + hydrochloricacid = zincchloride + hydrogen =>
Zn + 2 HCl = ZnCl2 + H2
Al + HNO3 = Al(NO3)3 + N2O + H2O =>
8 Al + 30 HNO3 = 8 Al(NO3)3 + 3 N2O + 15 H2O
Al + Cl2 = AlCl3 =>
2 Al + 3 Cl2 = 2 AlCl3
S2O3{2-} + Cl2 + H2O = SO4{2-} + Cl{-} + H{+} =>
S2O3{2-} + 4 Cl2 + 5 H2O = 2 SO4{2-} + 8 Cl{-} + 10 H{+}
copper(ii)carbonate = copper(ii)oxide + carbondioxide =>
CuCO3 = CuO + CO2
HNO3 + BaCl2 = HCl2 + BaNO3 =>
HNO3 + BaCl2 = HCl2 + BaNO3
NaOH + H3PO4 = H2O + Na3PO4 =>
3 NaOH + H3PO4 = 3 H2O + Na3PO4
NaCl(aq) + H2SO4(aq) = NaHSO4(aq) + HCl =>
NaCl(aq) + H2SO4(aq) = NaHSO4(aq) + HCl
AgNO3 + CaCl2 = AgCl + Ca(NO3)2 =>
2 AgNO3 + CaCl2 = 2 AgCl + Ca(NO3)2
Fe + H2O = Fe3O4 + H2 =>
3 Fe + 4 H2O = Fe3O4 + 4 H2
magnesium + sulfuricacid = magnesiumsulfate + hydrogen =>
Mg + H2SO4 = MgSO4 + H2
Fe2O3 + CO = Fe + CO2 =>
Fe2O3 + 3 CO = 2 Fe + 3 CO2
Na2S2O3 + HCl = NaCl + SO2 + S + H2O =>
Na2S2O3 + 2 HCl = 2 NaCl + SO2 + S + H2O
CoSO4 + KI + KIO3 + H2O = Co(OH)2 + K2SO4 + I2 =>
3 CoSO4 + 5 KI + KIO3 + 3 H2O = 3 Co(OH)2 + 3 K2SO4 + 3 I2
KMnO4 + H2SO4 + NaNO2 = K2SO4 + NaNO3 + MnSO4 + H2O =>
2 KMnO4 + 3 H2SO4 + 5 NaNO2 = K2SO4 + 5 NaNO3 + 2 MnSO4 + 3 H2O
C3H8 + O2 = CO2 + H2O =>
C3H8 + 5 O2 = 3 CO2 + 4 H2O
copper(ii)sulfate + sodiumhydroxide = copper(ii)hydroxide + sodiumsulfate =>
CuSO4 + 2 NaOH = Cu(OH)2 + Na2SO4
C10H14N2Na2O8 + Ca(OH)2 = C10H12CaN2Na2O8 + H2O =>
C10H14N2Na2O8 + Ca(OH)2 = C10H12CaN2Na2O8 + 2 H2O
PbO + H2 = Pb + H2O =>
PbO + H2 = Pb + H2O
Pb(NO3)2 + Na2SO4 = NaNO3 + PbSO4 =>
Pb(NO3)2 + Na2SO4 = 2 NaNO3 + PbSO4
BH2 + H2O = H3BO3 + H2 =>
2 BH2 + 6 H2O = 2 H3BO3 + 5 H2
C2H4 + KMnO4 + H2O = C2H4(OH)2 + MnO2 + KOH =>
3 C2H4 + 2 KMnO4 + 4 H2O = 3 C2H4(OH)2 + 2 MnO2 + 2 KOH
ammoniumchloride + sodiumhydroxide = sodiumchloride + ammonia + water =>
NH4Cl + NaOH = NaCl + NH3 + H2O
A1 + O2 = A12O3 =>
24 A1 + 3 O2 = 2 A12O3
CH4 + O2 = CO2 + H2O =>
CH4 + 2 O2 = CO2 + 2 H2O
copper(ii)oxide + ammoniumnitrate = copper(ii)nitrate + ammonia + water =>
CuO + 2 NH4NO3 = Cu(NO3)2 + 2 NH3 + H2O
Ca + H2O = H2 + Ca(OH)2 =>
Ca + 2 H2O = H2 + Ca(OH)2
Na2SO3 = Na2S + Na2SO4 =>
4 Na2SO3 = Na2S + 3 Na2SO4
Zn + HNO2 = Zn(NO2)3 + H20 =>
20 Zn + 60 HNO2 = 20 Zn(NO2)3 + 3 H20
S + KOH = K2S + K2SO3 + H2O =>
3 S + 6 KOH = 2 K2S + K2SO3 + 3 H2O
P4 + H2 = PH2 =>
P4 + 4 H2 = 4 PH2
C8H18 + O2 = CO2 + H2O =>
2 C8H18 + 25 O2 = 16 CO2 + 18 H2O
Na2S2O3 + HCl = NaCl + SO2 + S + H2O =>
Na2S2O3 + 2 HCl = 2 NaCl + SO2 + S + H2O
C + O2 = CO2 =>
C + O2 = CO2
C6H14O2N + O2 + H{+} = CO2 + NH4{+} + H2O =>
4 C6H14O2N + 31 O2 + 4 H{+} = 24 CO2 + 4 NH4{+} + 22 H2O
Cu + HNO3 = Cu(NO3)2 + NO + H2O =>
3 Cu + 8 HNO3 = 3 Cu(NO3)2 + 2 NO + 4 H2O
P4O10 + H2O = H3PO4 =>
P4O10 + 6 H2O = 4 H3PO4
HNO3 + H2S = S + NO2 + H2O =>
2 HNO3 + H2S = S + 2 NO2 + 2 H2O
C10H14N2Na2O8 + Mg(OH)2 = C10H12MgN2Na2O8 + H2O =>
C10H14N2Na2O8 + Mg(OH)2 = C10H12MgN2Na2O8 + 2 H2O
S + O2 = SO2 =>
S + O2 = SO2
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