PTHH: \(4M+3O_2\underrightarrow{t^o}2M_2O_3\)
a) Áp dụng ĐLBTKL:
\(m_{O_2}=m_{M_2O_3}-m_M=24,48-12,96=11,52\left(g\right)\)
\(\Rightarrow n_{O_2}=\frac{11,52}{32}=0,36\left(mol\right)\) \(\Rightarrow V_{O_2}=0,36\cdot22,4=8,064\left(l\right)\)
b) Theo PTHH: \(n_M=\frac{4}{3}n_{O_2}=0,48mol\)
\(\Rightarrow M_M=\frac{12,96}{0,48}=27\) \(\Rightarrow\) M là Nhôm