Dobierz współczynniki stechiometryczne: POMÓŻCIE Na+S->Na2S Al+O2->Al2O3 Mg+HNO3->Mg(NO3)2+H2 N2O5+H2O->HNO3 Mg(OH)2+H2SO4->MgSO4+H2O
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2Na+S->Na2S
4Al+3O2->2Al2O3
Mg+2HNO3->Mg(NO3)2+H2
N2O5+H2O->2HNO3
Mg(OH)2+H2SO4->MgSO4+2H2O
To są te pogrubione cyfry
2Na+S-->Na2S
4 Al+3 O2 --> 2 Al2O3
Mg+ 2 HNO3 --> Mg(NO3)2 + H2
N2O5 + H20 --> 2HNO3
Mg(OH)2+H2SO4--> MgSO4+2 H2O