Составьте пары соответствияNa+S=Na2S                                                      n(A):n(B):n(C):n(D)=2:1:1:2Na2O+H2O=NaOH                                          n(A):n(B):n(C):n(D)=2:2:2:1      Na+H2O=NaOh+H2        ...

Составьте пары соответствия Na+S=Na2S                                                      n(A):n(B):n(C):n(D)=2:1:1:2 Na2O+H2O=NaOH                                          n(A):n(B):n(C):n(D)=2:2:2:1      Na+H2O=NaOh+H2                                        n(A):n(B):n(C)=1:1:2  Na+O2=Na2O                                                    n(A):n(B):n(C)=4:1:2 NaOh+H2SO4=Na2SO4+H2O                       n(A):n(B):n(C)=2:1:1