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3 Ca2 = 2 Ca3
FeSO4 + Na2SO3 = FeSO3 + Na2SO4 =>
FeSO4 + Na2SO3 = FeSO3 + Na2SO4
Na + HPo3 = Na3Po + H2 =>
18 Na + 2 HPo3 = 6 Na3Po + H2
C5H10O5 + H2 = C14H30 + H2O =>
14 C5H10O5 + 75 H2 = 5 C14H30 + 70 H2O
Cr2O7{-2} + H{+} + {-} = Cr{+3} + H2O =>
Cr2O7{-2} + 14 H{+} + 6e = 2 Cr{+3} + 7 H2O
Sn(OH)2 + CH3COOCH2CH3 = SnO2 + CH3COOH + C2H6 =>
Sn(OH)2 + CH3COOCH2CH3 = SnO2 + CH3COOH + C2H6
HSO4 + BaO2 = BaSO4 + HO2 =>
HSO4 + BaO2 = BaSO4 + HO2
M + H2SO4 = M(SO4) + SO2 + H2O =>
M + 2 H2SO4 = M(SO4) + SO2 + 2 H2O
K2FeO4 + Na2S + H2O = Fe(OH)3 + KOH + S + NaOH =>
2 K2FeO4 + 3 Na2S + 8 H2O = 2 Fe(OH)3 + 4 KOH + 3 S + 6 NaOH
CH3CHClCH3 + NaOH = CH3CH(OH)CH3 + NaCl =>
CH3CHClCH3 + NaOH = CH3CH(OH)CH3 + NaCl
Na + HPo3 = Na3Po + H2 =>
18 Na + 2 HPo3 = 6 Na3Po + H2
Cu + H2SO4 = CuSO4 + H2O + H2SO3 =>
Cu + 2 H2SO4 = CuSO4 + H2O + H2SO3
P + CI2 = PCI2 =>
P + CI2 = PCI2
Cu(NO3)23H2O + C6H8O7H2O = CuO + CO2 + NO2 + H2O =>
9 Cu(NO3)23H2O + 22 C6H8O7H2O = 9 CuO + 132 CO2 + 207 NO2 + 119 H2O
H2C2O4 + Ba(OH)2 = BaC2O4 + H2O =>
H2C2O4 + Ba(OH)2 = BaC2O4 + 2 H2O
Na2SO4 + MgBr = NaBr + Mg2SO4 =>
Na2SO4 + 2 MgBr = 2 NaBr + Mg2SO4
Sb2S(s) + O2(g) = Sb2O3(s) + SO2(g) =>
2 Sb2S(s) + 5 O2(g) = 2 Sb2O3(s) + 2 SO2(g)
HCl(aq) + K2CrO4(aq) = K2Cr2O7(aq) + H2O(l) + KCl(aq) =>
2 HCl(aq) + 2 K2CrO4(aq) = K2Cr2O7(aq) + H2O(l) + 2 KCl(aq)
Na + HPo3 = Na3Po + H2 =>
18 Na + 2 HPo3 = 6 Na3Po + H2
HCl + Ca(OH) = CaCl + H(OH) =>
HCl + Ca(OH) = CaCl + H(OH)
Na + HPO3 = NaPO3 + H2 =>
2 Na + 2 HPO3 = 2 NaPO3 + H2
Pb(OH)2 + N2O5 = Pb(NO3)2 + H2O =>
Pb(OH)2 + N2O5 = Pb(NO3)2 + H2O
ZnS + O2 = ZnO + SO2 =>
2 ZnS + 3 O2 = 2 ZnO + 2 SO2
NaBr + S = Na2S + Br =>
2 NaBr + S = Na2S + 2 Br
M + H2SO4 = M(SO4) + SO2 + H2O =>
M + 2 H2SO4 = M(SO4) + SO2 + 2 H2O
Fe2Cl3 + KNO3 = Fe(NO3)3 + K2Cl =>
Fe2Cl3 + 6 KNO3 = 2 Fe(NO3)3 + 3 K2Cl
(NH4)2CrO4 + Cu(NO3)2 = NH4NO3 + CuCrO4 =>
(NH4)2CrO4 + Cu(NO3)2 = 2 NH4NO3 + CuCrO4
AlC2O4 + CaNi = AlNi + CaC2O4 =>
AlC2O4 + CaNi = AlNi + CaC2O4
CaOH + H3PO4 = CaPO4 + H4O =>
CaOH + H3PO4 = CaPO4 + H4O
Cl2 + MgI2 = I2 + Mg7Cl2 =>
Cl2 + 7 MgI2 = 7 I2 + Mg7Cl2
K2FeO4 + Na2S + H2O = Fe(OH)3 + KOH + S + NaOH =>
2 K2FeO4 + 3 Na2S + 8 H2O = 2 Fe(OH)3 + 4 KOH + 3 S + 6 NaOH
Na2S2O3(aq) + Pb(CH3COO)2(aq) = PbS2O3(aq) + Na(CH3COO)(aq) =>
Na2S2O3(aq) + Pb(CH3COO)2(aq) = PbS2O3(aq) + 2 Na(CH3COO)(aq)
P4 + O2 = P2O6 =>
P4 + 6 O2 = 2 P2O6
K2O + HNO3 = KNO3 + H2O =>
K2O + 2 HNO3 = 2 KNO3 + H2O
K2CrO4 + Ba(NO3)2 = K{+} + NO3{-} + BaCrO4 =>
K2CrO4 + Ba(NO3)2 = 2 K{+} + 2 NO3{-} + BaCrO4
Cr3SO4 + KCO3 = Cr3CO3 + KSO4 =>
Cr3SO4 + KCO3 = Cr3CO3 + KSO4
Hg + HNO3 = NH4NO3 + H2O + Hg(NO3)2 =>
4 Hg + 10 HNO3 = NH4NO3 + 3 H2O + 4 Hg(NO3)2
W + HCrO3 = W(CrO3)2 + H2O + CrO =>
3 W + 8 HCrO3 = 3 W(CrO3)2 + 4 H2O + 2 CrO
LiPO4 + BaOH = LiBa + PO4OH =>
LiPO4 + BaOH = LiBa + PO4OH
Mo + O2 = Mo2O =>
4 Mo + O2 = 2 Mo2O
Fe + NaBr = FeBr2 + FeNa =>
3 Fe + 2 NaBr = FeBr2 + 2 FeNa
CuCO3 + HNO3 = Cu(NO3) + CO3 + H2 =>
2 CuCO3 + 2 HNO3 = 2 Cu(NO3) + 2 CO3 + H2
NH3 + H2SO4 = (NH4)2SO4 =>
2 NH3 + H2SO4 = (NH4)2SO4
H2CO + H2O = CH2(OH)2 =>
H2CO + H2O = CH2(OH)2
CaO + SO3 = CaSO4 =>
CaO + SO3 = CaSO4
CaO + HNO3 = Ca(NO3)2 + H2O =>
CaO + 2 HNO3 = Ca(NO3)2 + H2O
Pb(ClO3)2 + BaBr2 = PbBr2 + Ba(ClO3)2 =>
Pb(ClO3)2 + BaBr2 = PbBr2 + Ba(ClO3)2
CH3COOH + NaHO = H2O + NaCH3COO =>
CH3COOH + NaHO = H2O + NaCH3COO
Zn(s) + HCl(aq) = ZnCl2(aq) + H2(g) =>
Zn(s) + 2 HCl(aq) = ZnCl2(aq) + H2(g)
NO2{-} + Cu{2+} + OH{-} = NO3{-} + Cu{+} + H{+} =>
NO2{-} + 2 Cu{2+} + OH{-} = NO3{-} + 2 Cu{+} + H{+}
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