\(n_Y=\dfrac{3.36}{22.4}=0.15\left(mol\right)\)
\(M_Y=32\cdot1.375=44\left(\dfrac{g}{mol}\right)\)
\(\Rightarrow Y:N_2O\)
\(Đặt:n_{Mg}=3x\left(mol\right).n_{Al}=2x\left(mol\right)\)
\(BTelectron:\)
\(2\cdot n_{Mg}+3n_{Al}=8n_{N_2O}\)
\(\Rightarrow2\cdot3x+3\cdot2x=8\cdot0.15\)
\(\Rightarrow x=0.1\)
\(m_{hh}=m_{Mg}+m_{A;}=0.3\cdot24+0.2\cdot27=12.6\left(g\right)\)
Chúc bạn học tốt <3