a) Ta có :
\(V\left(hh-\text{đ}kt\right)=24.\left(\dfrac{14}{14}+\dfrac{4}{30}\right)=27,2\left(l\right)\)
\(V\left(hh-\text{đ}ktc\right)=22,4.\left(\dfrac{14}{14}+\dfrac{4}{30}\right)\approx25,4\left(l\right)\)
b)
\(Ta-c\text{ó}:mH2O=0,8.1=0,8\left(g\right)=>nH2O=\dfrac{0,8}{18}=\dfrac{2}{45}\left(mol\right)\)