Question

giúp mik nhanh vs ạ 

Answer 1

\(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)

PTHH: Mg + 2CH₃COOH ---> (CH₃COO)₂Mg + H₂

            0,15<-------------------------------------------0,15

\(\Rightarrow\left\{{}\begin{matrix}m_{Mg}=0,15.24=3,6\left(g\right)\\m_{MgO}=7,6-3,6=4\left(g\right)\end{matrix}\right.\\ \Rightarrow B\)