\(n_A=\dfrac{6}{M_A}\left(mol\right);n_{SA}=\dfrac{14}{M_A+32}\left(mol\right)\\ PTHH:A+S\rightarrow AS\\ \Rightarrow n_A=n_{SA}\\ \Rightarrow\dfrac{6}{M_A}=\dfrac{14}{M_A+32}\\ \Rightarrow M_A=24\left(g/mol\right)\\ \text{Vậy }A\text{ là magie}\left(Mg\right)\)
Ta có PTHH \(A+S->AS\)
\(\dfrac{6}{MA}\)..........\(\dfrac{14}{MA+32}\)
n A = \(\dfrac{6}{MA}\)mol
n AS = \(\dfrac{14}{MA+32}\) mol
=> \(\dfrac{6}{MA}\)= \(\dfrac{14}{MA+32}\)
=> MA = 24 đvc => A là kim loại Magie (Mg)