Ta có:
+ \(M_{CO_2}=12+16.2=44\) g/mol
⇒ \(n_{CO_2}=\dfrac{m}{M}=\dfrac{11}{44}=\dfrac{1}{4}mol\)
+ \(n=\dfrac{sophantu}{6.10^{23}}=\dfrac{9.10^{23}}{6.10^{23}}=\dfrac{3}{2}=mol\)
\(V_{H_2\left(đktc\right)}=n.22,4=\dfrac{3}{2}.22.4=33,6\left(l\right)\)