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2 Re + 7 F2 = 2 ReF7
H2S + H2SO4 = H2O + S =>
3 H2S + H2SO4 = 4 H2O + 4 S
K + H2O = KOH + H =>
K + H2O = KOH + H
NaCI + F2 = NaF + CI =>
2 NaCI + F2 = 2 NaF + 2 CI
C3H8 + O2 = CO2 + H2O =>
C3H8 + 5 O2 = 3 CO2 + 4 H2O
Cu + AgCl = CuAgCl =>
Cu + AgCl = CuAgCl
CH2O + Cu(OH)2 = HCOOH + CuOH + H2 =>
2 CH2O + 2 Cu(OH)2 = 2 HCOOH + 2 CuOH + H2
Pb(NO3)2 + ZnI2 = PbI2 + Zn(NO3)2 =>
Pb(NO3)2 + ZnI2 = PbI2 + Zn(NO3)2
Li + Cl = LiCl =>
Li + Cl = LiCl
H3PO3 = PH3 + H3PO4 =>
4 H3PO3 = PH3 + 3 H3PO4
MgCO3 + FeBr3 = MgBr2 + Fe + CO3 =>
3 MgCO3 + 2 FeBr3 = 3 MgBr2 + 2 Fe + 3 CO3
K + Cl = KCl =>
K + Cl = KCl
FSO3H + (NH2)2CO = (FSO2)2NH + CO2 + NH4SO3F =>
5 FSO3H + 2(NH2)2CO = (FSO2)2NH + 2 CO2 + 3 NH4SO3F
C(g) + O2(g) = CO2(g) =>
C(g) + O2(g) = CO2(g)
C6H8O6 + K2CO3 = KC6H7O6 + CO2 + H2O =>
2 C6H8O6 + K2CO3 = 2 KC6H7O6 + CO2 + H2O
CH3CHO + K2Cr2O7 + H2SO4 = CH3COOH + K2SO4 + Cr2(SO4)3 + H2O =>
3 CH3CHO + K2Cr2O7 + 4 H2SO4 = 3 CH3COOH + K2SO4 + Cr2(SO4)3 + 4 H2O
C6H10Cl2 + H{+} + e = C6H10 + HCl =>
C6H10Cl2 + 2 H{+} + 2e = C6H10 + 2 HCl
H2 + N2 = NH2 =>
2 H2 + N2 = 2 NH2
C2H6SO2 + O2 = CO2 + H2O + SO2 =>
2 C2H6SO2 + 7 O2 = 4 CO2 + 6 H2O + 2 SO2
HBr + Ca = CaBr + H =>
HBr + Ca = CaBr + H
H2O + P6 = H2PO2 + PH3 =>
36 H2O + 5 P6 = 18 H2PO2 + 12 PH3
Na2S(s) + NiSO4(aq) = Na2SO4(aq) + NiS(s) =>
Na2S(s) + NiSO4(aq) = Na2SO4(aq) + NiS(s)
Al + H2SO4 = H2S + Al(SO4)3 + H2O =>
4 Al + 15 H2SO4 = 3 H2S + 4 Al(SO4)3 + 12 H2O
HgO = Hg + O2 =>
2 HgO = 2 Hg + O2
Al + H2S04 = AlH2S04 =>
Al + H2S04 = AlH2S04
KI + NH3 = KNH2 + HI =>
KI + NH3 = KNH2 + HI
NH4Br + Cl2 = NH4Cl + Br2 =>
2 NH4Br + Cl2 = 2 NH4Cl + Br2
K(CrO4) + Al2(SO4)3 = K(SO4)3 + Al2(CrO4) =>
K(CrO4) + Al2(SO4)3 = K(SO4)3 + Al2(CrO4)
AgS + H2O = Ag2 + H2S + O2 =>
2 AgS + 2 H2O = Ag2 + 2 H2S + O2
C + HI = CI4 + H2 =>
C + 4 HI = CI4 + 2 H2
CaSiO3(s) + HF(g) = SiF4(g) + CaF2(s) + H2O(l) =>
CaSiO3(s) + 6 HF(g) = SiF4(g) + CaF2(s) + 3 H2O(l)
NaCI + F2 = NaF + CI =>
2 NaCI + F2 = 2 NaF + 2 CI
Mg + Se = MgSe =>
Mg + Se = MgSe
Na2S2O3 + KIO3 + HCl = Na2SO4 + K2SO4 + ICl + H2O =>
Na2S2O3 + 2 KIO3 + 2 HCl = Na2SO4 + K2SO4 + 2 ICl + H2O
K2Cr2O7 + H2C2O4 + H2SO4 = K2SO4 + Cr2(SO4)3 + CO2 + H2O =>
K2Cr2O7 + 3 H2C2O4 + 4 H2SO4 = K2SO4 + Cr2(SO4)3 + 6 CO2 + 7 H2O
Fe + Al(NO3)2 = Al + Fe(NO3)3 =>
2 Fe + 3 Al(NO3)2 = 3 Al + 2 Fe(NO3)3
NH4N(NO2)2 + C654H988N8O20 = N2 + H2O + CO2 =>
891 NH4N(NO2)2 + C654H988N8O20 = 1786 N2 + 2276 H2O + 654 CO2
SnCl2 + NaOH + H2O2 = Na2Sn(OH)6 + NaCl =>
SnCl2 + 4 NaOH + H2O2 = Na2Sn(OH)6 + 2 NaCl
C3H5(NO3)3 = CO2 + N2 + H2O + O2 =>
4 C3H5(NO3)3 = 12 CO2 + 6 N2 + 10 H2O + O2
Al4C3(s) + H2O(l) = Al(OH)3(s) + CH4(g) =>
Al4C3(s) + 12 H2O(l) = 4 Al(OH)3(s) + 3 CH4(g)
Sb + H2S = SbS + H =>
Sb + H2S = SbS + 2 H
PB(NO3)2(s) + K2C2O4(s) = PBC2O4(s) + KNO3(s) =>
PB(NO3)2(s) + K2C2O4(s) = PBC2O4(s) + 2 KNO3(s)
Cl2 + Li2O = LiCl + O =>
Cl2 + Li2O = 2 LiCl + O
Pb{2+} + I{-} = Pb{+} + I =>
Pb{2+} + I{-} = Pb{+} + I
Na2SO3 + HCl = HSO3 + Na2Cl =>
Na2SO3 + HCl = HSO3 + Na2Cl
CaCO3 + H2O = CaHCO3 + O2 =>
4 CaCO3 + 2 H2O = 4 CaHCO3 + O2
KMnO4 + KI + H2SO4 = KIO3 + MnSO4 + K2SO4 + H2O =>
6 KMnO4 + 5 KI + 9 H2SO4 = 5 KIO3 + 6 MnSO4 + 3 K2SO4 + 9 H2O
Fe + Cl2 = FeCl3 =>
2 Fe + 3 Cl2 = 2 FeCl3
O2 + K = KO =>
O2 + 2 K = 2 KO
NaHCO3 + H3PO4 = Na2HPO4 + H2O + CO2 =>
2 NaHCO3 + H3PO4 = Na2HPO4 + 2 H2O + 2 CO2
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