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4(a)Al(s) + 3 O2(g) = 2 Al2O3(s)
Zn(HCO3)2 = CO2 + H2O + ZnCO3 =>
Zn(HCO3)2 = CO2 + H2O + ZnCO3
NH4Br + CaCl2 = NH4Cl2 + CaBr =>
NH4Br + CaCl2 = NH4Cl2 + CaBr
HI(aq) + KHSO3(aq) = H2O(l) + KI(aq) + SO2(g) =>
HI(aq) + KHSO3(aq) = H2O(l) + KI(aq) + SO2(g)
Fe + Ag = FeAg3 =>
Fe + 3 Ag = FeAg3
SH + KOH = H2O + KS =>
SH + KOH = H2O + KS
H2S + H2O = H3O + S =>
H2S + 2 H2O = 2 H3O + S
(d)H2 + O2 = H2O =>
2(d)H2 + O2 = 2 H2O
CH4 + O2 = C + H2O =>
CH4 + O2 = C + 2 H2O
Cr2O3 + KNO + Na2CO3 = Na2CrO + KNO2 + CO2 =>
Cr2O3 + 3 KNO + 2 Na2CO3 = 2 Na2CrO + 3 KNO2 + 2 CO2
Na(OH)2 + H2SO4 = NaSO4 + H2O =>
Na(OH)2 + H2SO4 = NaSO4 + 2 H2O
H2SO2 + O2 = SO2 + H2O =>
2 H2SO2 + O2 = 2 SO2 + 2 H2O
CaCl2(aq) + (NH4)2CO3(aq) = CaCO3(s) + NH4Cl(aq) =>
CaCl2(aq) + (NH4)2CO3(aq) = CaCO3(s) + 2 NH4Cl(aq)
Al + NaO = AlO + Na =>
Al + NaO = AlO + Na
(d)H2 + O2 = H2O =>
2(d)H2 + O2 = 2 H2O
CF4 = C + F2 =>
CF4 = C + 2 F2
CH4 + Cl2 = CCl4 + HCl =>
CH4 + 4 Cl2 = CCl4 + 4 HCl
Cu(NO3)2 + K4[Fe(CN)6] = Cu[Fe(CN)6] + K4(NO3)2 =>
Cu(NO3)2 + K4[Fe(CN)6] = Cu[Fe(CN)6] + K4(NO3)2
NaOH + HC1 = NaC1 + H2O =>
NaOH + HC1 = NaC1 + H2O
CO2 + H2O = C10H8 + O2 =>
10 CO2 + 4 H2O = C10H8 + 12 O2
Al + KMnO4 + H2O = MnO2 + (Al(OH)4) + KOH =>
3 Al + 4 KMnO4 + 8 H2O = 4 MnO2 + 3(Al(OH)4) + 4 KOH
Al2(CO3)3(heated) = Al2O3 + CO2 =>
Al2(CO3)3(heated) = Al2O3 + 3 CO2
Bi2O3 + Br2 + KOH = KBiO3 + KBr + H2O =>
Bi2O3 + 2 Br2 + 6 KOH = 2 KBiO3 + 4 KBr + 3 H2O
Hg2(NO3)2 + KI = HgI2 + K2NO3 =>
Hg2(NO3)2 + 4 KI = 2 HgI2 + 2 K2NO3
Ca = Ca2{+} + e =>
2 Ca = Ca2{+} + e
F + Pb4I = PbF + I =>
4 F + Pb4I = 4 PbF + I
H2O + CO2 = C4H10 + O =>
5 H2O + 4 CO2 = C4H10 + 13 O
C12H22O11 + Ba(NO3)2 = BaCO3 + CO2 + H2O + N2 =>
5 C12H22O11 + 24 Ba(NO3)2 = 24 BaCO3 + 36 CO2 + 55 H2O + 24 N2
Li + Au(Cl)2 = LiCl + Au =>
2 Li + Au(Cl)2 = 2 LiCl + Au
NaI + HNO3 = NaNO3 + HI =>
NaI + HNO3 = NaNO3 + HI
FeS + oxygen = Fe2O3 + SO2 =>
4 FeS + 7 O2 = 2 Fe2O3 + 4 SO2
Al + Pb(NO3)2 = Al(NO3)3 + Pb(NO3) =>
Al + 3 Pb(NO3)2 = Al(NO3)3 + 3 Pb(NO3)
KMnO4 + NO2 + H2O = Mn(OH)4 + KNO3 + HNO3 =>
KMnO4 + 3 NO2 + 3 H2O = Mn(OH)4 + KNO3 + 2 HNO3
Zn(OH)2 + NH4OH + NH4Cl = [Zn(NH3)4]Cl2 + H2O =>
Zn(OH)2 + 2 NH4OH + 2 NH4Cl = [Zn(NH3)4]Cl2 + 4 H2O
Mg3(NO)2 + KOH = Mg(OH)2 + K3NO =>
Mg3(NO)2 + 6 KOH = 3 Mg(OH)2 + 2 K3NO
Ca(MnO4)2 + NIBO3 = Ca(BO3)2 + NIMnO4 =>
Ca(MnO4)2 + 2 NIBO3 = Ca(BO3)2 + 2 NIMnO4
H2SiO3 + KCl = H + KClSiO3 =>
H2SiO3 + KCl = 2 H + KClSiO3
KClO4 + P4 = P4O10 + KCl =>
5 KClO4 + 2 P4 = 2 P4O10 + 5 KCl
Na2SiO3 + H2C4H4O6 = Na2C4H4O6 + H2SiO3 =>
Na2SiO3 + H2C4H4O6 = Na2C4H4O6 + H2SiO3
Mg5(CO3)4(OH)24H2O + H = Mg + CO2 + H2O =>
Mg5(CO3)4(OH)24H2O + 32 H = 5 Mg + 4 CO2 + 29 H2O
KBr2 + Cl2 = KCl + Br =>
2 KBr2 + Cl2 = 2 KCl + 4 Br
CaO + Br = BrCaO =>
CaO + Br = BrCaO
N + HCOOH = N(COOH)2 + H2 =>
N + 2 HCOOH = N(COOH)2 + H2
CH3CH2CH2CH2BrAgNO3 = CH3CH2CH2CH2NO3AgBr =>
CH3CH2CH2CH2BrAgNO3 = CH3CH2CH2CH2NO3AgBr
MnO4{-} + ClO2{-} + H2O = MnO2 + ClO4{-} + OH[{-}] =>
4 MnO4{-} + 3 ClO2{-} + 2 H2O = 4 MnO2 + 3 ClO4{-} + 4 OH[{-}]
Rb + RbNO3 = RbO + N2 =>
4 Rb + 2 RbNO3 = 6 RbO + N2
Mg(No3)2 + Na2Po3 = MgPo3 + NaNo3 =>
Mg(No3)2 + Na2Po3 = MgPo3 + 2 NaNo3
Kl + ZnS = KlS + Zn =>
Kl + ZnS = KlS + Zn
Ba + Cr2O7 + OH = BaCrO4 + H2O =>
2 Ba + Cr2O7 + 2 OH = 2 BaCrO4 + H2O
(d)H2 + O2 = H2O =>
2(d)H2 + O2 = 2 H2O
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