PT: \(2H_2+O_2\underrightarrow{t^o}2H_2O\)
a, Ta có: \(n_{H_2}=\frac{13,44}{22,4}=0,6\left(mol\right)\)
Theo PT: \(n_{H_2O}=n_{H_2}=0,6\left(mol\right)\)
\(\Rightarrow m_{H_2O}=0,6.18=10,8\left(g\right)\)
b, Theo PT: \(n_{O_2}=\frac{1}{2}n_{H_2}=0,3\left(mol\right)\)
\(\Rightarrow V_{O_2}=0,3.22,4=6,72\left(l\right)\)
c, \(2X+6HCl\rightarrow2XCl_3+3H_2\)
Theo PT: \(n_X=\frac{2}{3}n_{H_2}=0,4\left(mol\right)\)
\(\Rightarrow M_X=\frac{10,8}{0,4}=27\left(g/mol\right)\)
Vậy: X là Nhôm (Al)
Bạn tham khảo nhé!