\(n_{H_2}=\frac{8,96}{22,4}=0,4\left(mol\right);n_{O_2}=\frac{3,36}{22,4}=0,15\left(mol\right)\)
\(PTHH:H_2+\frac{1}{2}O_2\underrightarrow{t^o}H_2O\)
(mol)____0,3___0,15____0,3_
Tỉ lệ: \(\frac{0,4}{1}>\frac{0,15}{\frac{1}{2}}\rightarrow H_2\) dư
\(m_{H_2O}=18.0,3=5,4\left(g\right)\)