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H2SO4 + Mg(OH)2= MgSO4 +2 H2O
H2SO4 + Mg = MgSO4 + H2
H2SO4 +MgO = MgSO4 + H2O
Na2S ( siarczek sodu)
2Na + H2S = Na2S + h2
NA2O + H2S = NA 2 S + H2o
2NaOH + H2S = Na2S +2 H2o
pozdrawia,mm