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H2S(aq) + NiSO4(aq) = NiS(aq) + H2SO4(aq)
Cr + O2 = Cr2O3 =>
4 Cr + 3 O2 = 2 Cr2O3
CuCO3 + KI = K2CO3 + CuI + I2 =>
2 CuCO3 + 4 KI = 2 K2CO3 + 2 CuI + I2
CuCl2 + HNO3 = CuNO3 + HCl2 =>
CuCl2 + HNO3 = CuNO3 + HCl2
H2S(aq) + NiSO4(aq) = NiS(s) + H2SO4(aq) =>
H2S(aq) + NiSO4(aq) = NiS(s) + H2SO4(aq)
SF4 + I2O5 = IF5 + SO2 =>
5 SF4 + 2 I2O5 = 4 IF5 + 5 SO2
Na + H3PO4 = Na3PO4 + H2 =>
6 Na + 2 H3PO4 = 2 Na3PO4 + 3 H2
H2S(aq) + NiSO4(aq) = NiS(s) + H2SO4(s) =>
H2S(aq) + NiSO4(aq) = NiS(s) + H2SO4(s)
Hg2(NO3)2(aq) + CuSO4(aq) = Hg2SO4(s) + Cu(NO3)2(aq) =>
Hg2(NO3)2(aq) + CuSO4(aq) = Hg2SO4(s) + Cu(NO3)2(aq)
Al + Pb(NO3)2 = Pb + Al(NO3)3 =>
2 Al + 3 Pb(NO3)2 = 3 Pb + 2 Al(NO3)3
C2 + O2 = CO =>
C2 + O2 = 2 CO
FeS + O2 + H2O = FeO3H3 + SO4{-2} + H{+} =>
4 FeS + 9 O2 + 10 H2O = 4 FeO3H3 + 4 SO4{-2} + 8 H{+}
C + O2 = CO =>
2 C + O2 = 2 CO
H2S(aq) + NiSO4(aq) = NiS(aq) + H2SO4(s) =>
H2S(aq) + NiSO4(aq) = NiS(aq) + H2SO4(s)
HCOONa + AgNO3 + NH3 + H2O = Ag + Na2CO3 + (NH4)2CO3 =>
18 HCOONa + 4 AgNO3 + 14 NH3 + 6 H2O = 4 Ag + 9 Na2CO3 + 9(NH4)2CO3
H2S(aq) + NiSO4(aq) = NiS(aq) + H2SO4(aq) =>
H2S(aq) + NiSO4(aq) = NiS(aq) + H2SO4(aq)
HCOONa + AgNO3 + NH3 + H2O = Ag + Na2CO3 + (NH4)2CO3 =>
18 HCOONa + 4 AgNO3 + 14 NH3 + 6 H2O = 4 Ag + 9 Na2CO3 + 9(NH4)2CO3
CH3NH3Cl + NaOH = CH3NH2 + NaCl + H2O =>
CH3NH3Cl + NaOH = CH3NH2 + NaCl + H2O
CaCO3 + H2SO4 = CaSO4 + H2O + CO2 =>
CaCO3 + H2SO4 = CaSO4 + H2O + CO2
H2S(aq) + NiSO4(aq) = NiS + H2SO4 =>
H2S(aq) + NiSO4(aq) = NiS + H2SO4
K3PO4 + CaCl2 = KCl + Ca3(PO4)2 =>
2 K3PO4 + 3 CaCl2 = 6 KCl + Ca3(PO4)2
NaHSo3 + Ba(OH)2 = BaSo3 + Na2So3 + H2O =>
2 NaHSo3 + Ba(OH)2 = BaSo3 + Na2So3 + 2 H2O
K2Cr2O7 + H2SO4 = K2SO4 + Cr2(SO4)3 + H2O + O2 =>
2 K2Cr2O7 + 8 H2SO4 = 2 K2SO4 + 2 Cr2(SO4)3 + 8 H2O + 3 O2
Ag2O + HCHO = Ag + HCO2 + H2O =>
3 Ag2O + 2 HCHO = 6 Ag + 2 HCO2 + H2O
CaCO3 + H2SO4 = CaSO4 + H2O + CO2 =>
CaCO3 + H2SO4 = CaSO4 + H2O + CO2
Zn + NaOH = Na2ZnO2 + H2 =>
Zn + 2 NaOH = Na2ZnO2 + H2
Be(OH)2 + HCl = BeCl2 + H2O =>
Be(OH)2 + 2 HCl = BeCl2 + 2 H2O
Hg2(NO3)2(aq) + CuSO4(aq) = Hg2SO4(aq) + Cu(NO3)2(s) =>
Hg2(NO3)2(aq) + CuSO4(aq) = Hg2SO4(aq) + Cu(NO3)2(s)
Hg2(NO3)2 + KClO3 + HNO3 = KCl + Hg(NO3)2 + H2O =>
3 Hg2(NO3)2 + KClO3 + 6 HNO3 = KCl + 6 Hg(NO3)2 + 3 H2O
N2 + H2 = NH =>
N2 + H2 = 2 NH
O2 + Al = Al2O3 =>
3 O2 + 4 Al = 2 Al2O3
CO + O2 = CO2 =>
2 CO + O2 = 2 CO2
CU(OH)2 = CUO + H2O =>
CU(OH)2 = CUO + H2O
SeCl6 + O2 = SeO2 + Cl2 =>
SeCl6 + O2 = SeO2 + 3 Cl2
NH3 + O2 = N2 + H2O =>
4 NH3 + 3 O2 = 2 N2 + 6 H2O
CU(OH)2 = CUO + H2O =>
CU(OH)2 = CUO + H2O
Fe2(SO4)3 + NaCl = FeCl3 + Na2SO4 =>
Fe2(SO4)3 + 6 NaCl = 2 FeCl3 + 3 Na2SO4
H2SO4 + NaCl = HCl + Na2SO4 =>
H2SO4 + 2 NaCl = 2 HCl + Na2SO4
KCl + K2Cr2O7 + H2SO4 = Cl2 + Cr2(SO4)3 + K2SO4 + H2O =>
6 KCl + K2Cr2O7 + 7 H2SO4 = 3 Cl2 + Cr2(SO4)3 + 4 K2SO4 + 7 H2O
MG(s) + O2(g) = MGO2(s) =>
MG(s) + O2(g) = MGO2(s)
Al + HCl = AlCl + H =>
Al + HCl = AlCl + H
HCHO + KMmO4 + H2SO4 = HCOOH + MmSO4 + K2SO4 + H2O =>
5 HCHO + 2 KMmO4 + 3 H2SO4 = 5 HCOOH + 2 MmSO4 + K2SO4 + 3 H2O
C2H6 + Cl2 = C2H5Cl + HCl =>
C2H6 + Cl2 = C2H5Cl + HCl
Na2HPO4 + MgCl2 + NH4Cl = NH4MgPO4 + NaCl + HCl =>
Na2HPO4 + MgCl2 + NH4Cl = NH4MgPO4 + 2 NaCl + HCl
Zn3(PO4)2 + H2O = ZnHPO4 + Zn(OH)2 =>
Zn3(PO4)2 + 2 H2O = 2 ZnHPO4 + Zn(OH)2
NiSO4 + Na2CO3 + H2O = Ni(OH)2 + Na2SO4 + CO2 =>
NiSO4 + Na2CO3 + H2O = Ni(OH)2 + Na2SO4 + CO2
NaNO2 + ZN + NaOH = NH3 + Na2ZNO2 + H2O =>
NaNO2 + 3 ZN + 5 NaOH = NH3 + 3 Na2ZNO2 + H2O
H2 + Br2 = HBr =>
H2 + Br2 = 2 HBr
MgS + AlCl3 = MgCl2 + Al2S3 =>
3 MgS + 2 AlCl3 = 3 MgCl2 + Al2S3
Ca + HB = CaHB =>
Ca + HB = CaHB
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