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3 PbS + 62 HNO3 = 3 Pb()NO32 + 59 NO + 3 S + 31 H2O
H2BO3 + Zn(OH)4 = Zn2(BO3)4 + H2O =>
4 H2BO3 + 2 Zn(OH)4 = Zn2(BO3)4 + 8 H2O
Al2(SO4)2 + Ca(OH)2 = Al(OH)2CaSO4 =>
Al2(SO4)2 + 2 Ca(OH)2 = 2 Al(OH)2CaSO4
Os + O2 = OsO4 =>
Os + 2 O2 = OsO4
Fe3N4 + H2SO4 = FeSO4 + NH3 + N2 =>
Fe3N4 + 3 H2SO4 = 3 FeSO4 + 2 NH3 + N2
Cr2(SO4)3 + KOH = Cr(OH)3 + K2SO4 =>
Cr2(SO4)3 + 6 KOH = 2 Cr(OH)3 + 3 K2SO4
Fe2O3 + K3(Fe(CN)6) = Fe3(Fe(CN)6)3 + K2O =>
3 Fe2O3 + 6 K3(Fe(CN)6) = 2 Fe3(Fe(CN)6)3 + 9 K2O
HBr + BaCl2 = BaBr2 + HCl =>
2 HBr + BaCl2 = BaBr2 + 2 HCl
S8 + Na2SO3 + H2O = (Na2S2O3)(H2O)5 =>
S8 + 8 Na2SO3 + 40 H2O = 8(Na2S2O3)(H2O)5
K2Cr2O7 + HCl = CrCl2 + KCl + H2O + Cl2 =>
K2Cr2O7 + 14 HCl = 2 CrCl2 + 2 KCl + 7 H2O + 4 Cl2
CH3(CH2)4CHCHCH2CHCH(CH2)7COOH + CH3OH = CH3(CH2)4CHCHCH2CHCH(CH2)7COOCH3 + H2O =>
CH3(CH2)4CHCHCH2CHCH(CH2)7COOH + CH3OH = CH3(CH2)4CHCHCH2CHCH(CH2)7COOCH3 + H2O
FeS + O = FeO + SO =>
FeS + 2 O = FeO + SO
Na3PO4 + H2O = Na2HPO4 + NaOH =>
Na3PO4 + H2O = Na2HPO4 + NaOH
Pb(NO3)2 + K4[Fe(CN)6] = Pb2[Fe(CN)6] + KNO3 =>
2 Pb(NO3)2 + K4[Fe(CN)6] = Pb2[Fe(CN)6] + 4 KNO3
Al + HCl = AlCl3 + AlH =>
4 Al + 3 HCl = AlCl3 + 3 AlH
K2O + AlP = K2P + AlO =>
K2O + AlP = K2P + AlO
CuS + HNO3 = Cu2(NO3)2 + S + NO + H2O =>
6 CuS + 8 HNO3 = 3 Cu2(NO3)2 + 6 S + 2 NO + 4 H2O
FeSCN + (NH4)2C2O4 = (NH4)2SCN + FeC2O4 =>
FeSCN + (NH4)2C2O4 = (NH4)2SCN + FeC2O4
CaCO3 + C4H6O5 = CaC4H4O5 + CO2 + H2O =>
CaCO3 + C4H6O5 = CaC4H4O5 + CO2 + H2O
SO3 + H = SO2 + H2O =>
SO3 + 2 H = SO2 + H2O
C2H5OH + NO3 = N2 + H2O + CO2 =>
C2H5OH + 2 NO3 = N2 + 3 H2O + 2 CO2
SO2(g) + CaCO3(g) + O2(g) = CaSO4(s) + CO2(g) =>
2 SO2(g) + 2 CaCO3(g) + O2(g) = 2 CaSO4(s) + 2 CO2(g)
C2S + HCl = H2S + Cl2 + C =>
C2S + 2 HCl = H2S + Cl2 + 2 C
(d)V() + O2() = V2O5() =>
4(d)V() + 5 O2() = 2 V2O5()
C(s) + H2O(g) = CH4(g) + CO2(g) =>
2 C(s) + 2 H2O(g) = CH4(g) + CO2(g)
Fe(NO3)2 + AgF = FeF2 + AgNO3 =>
Fe(NO3)2 + 2 AgF = FeF2 + 2 AgNO3
P2O5 + Na2O = Na + PO4 =>
P2O5 + 3 Na2O = 6 Na + 2 PO4
Na2SO3 + KIO3 = Na2IO3 + KSO3 =>
Na2SO3 + KIO3 = Na2IO3 + KSO3
Ag2O(s) = Ag + O(s) =>
Ag2O(s) = 2 Ag + O(s)
Na + MgCl2 = NaCl2 + Mg =>
Na + MgCl2 = NaCl2 + Mg
Cd2 + HCl = CdCl2 + H =>
Cd2 + 4 HCl = 2 CdCl2 + 4 H
Mg + KMnO4 = K + MgMnO4 =>
Mg + KMnO4 = K + MgMnO4
CoS + H2SO4 = CoSO4 + H2O + SO2 =>
CoS + 4 H2SO4 = CoSO4 + 4 H2O + 4 SO2
KBr(aq) + H2SO4(aq) + MnO2(aq) = HKO4S(aq) + MnSO4(aq) + H2O(l) + Br(l) =>
2 KBr(aq) + 3 H2SO4(aq) + MnO2(aq) = 2 HKO4S(aq) + MnSO4(aq) + 2 H2O(l) + 2 Br(l)
Ti + O3 = Ti3O4 =>
9 Ti + 4 O3 = 3 Ti3O4
S + HNO3 = H2SO4 + NO2 + N2O =>
3 S + 6 HNO3 = 3 H2SO4 + 2 NO2 + 2 N2O
Ca(OH)2 + H2SO4 = H2O + Ca(OH)2SO3 =>
Ca(OH)2 + H2SO4 = H2O + Ca(OH)2SO3
Na2SO4 + PbCl2 = PbSO4 + NaCl =>
Na2SO4 + PbCl2 = PbSO4 + 2 NaCl
ZnCl2 + NH3 = [Zn(NH3)4]Cl2 =>
ZnCl2 + 4 NH3 = [Zn(NH3)4]Cl2
NH3 + O2 + CH4 = HCN + H2O =>
2 NH3 + 3 O2 + 2 CH4 = 2 HCN + 6 H2O
CuI2 = Cu2 + I =>
2 CuI2 = Cu2 + 4 I
SrO + Be3N2 = SrBe6ON4 =>
SrO + 2 Be3N2 = SrBe6ON4
Cu2S + HNO3 = H2SO4 + H2O + Cu(NO3)2 + NO2 =>
Cu2S + 14 HNO3 = H2SO4 + 6 H2O + 2 Cu(NO3)2 + 10 NO2
Sr(OH)2 + Sr(HS)2 + CO2 = SrCO3 + H2S =>
Sr(OH)2 + Sr(HS)2 + 2 CO2 = 2 SrCO3 + 2 H2S
HClO + Ag = AgClO + AgCl + H2O =>
2 HClO + 2 Ag = AgClO + AgCl + H2O
Na3PO4 + (NH4)2MoO4 + HNO3 = Na + (NH4)3PO4*12MoO3 + NH4NO3 + H2O =>
8 Na3PO4 + 96(NH4)2MoO4 + 162 HNO3 = 24 Na + 8(NH4)3PO4*12MoO3 + 165 NH4NO3 + 87 H2O
FeCl3H2SO4KCl = FeSO3KCl4H2O =>
FeCl3H2SO4KCl = FeSO3KCl4H2O
Cu(s) + S8(l) = Cu2S(s) =>
16 Cu(s) + S8(l) = 8 Cu2S(s)
CH3CH2COOCH3NH3 = CH3CH2CONH2CH3OH =>
CH3CH2COOCH3NH3 = CH3CH2CONH2CH3OH
Mg + Cu(OH)2 = Mg2(OH)2 + Cu =>
2 Mg + Cu(OH)2 = Mg2(OH)2 + Cu
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