a) \(n_{CH_4}=\dfrac{V_{\left(\text{đ}ktc\right)}}{22,4}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\)
PTHH: \(CH_4+2O_2\xrightarrow[]{t^o}CO_2+2H_2O\)
b) Theo PTHH: \(n_{H_2O}=n_{O_2}=2n_{CH_4}=2.0,4=0,8\left(mol\right)\)
\(m_{H_2O}=n.M=0,8.18=14,4\left(g\right)\)
c) \(V_{O_2\left(\text{đ}ktc\right)}=n.22,4=0,8.22,4=17,92\left(l\right)\)