\(n_{hh}=\dfrac{4.48}{22.4}=0.2\left(mol\right)\)
\(n_{C_2H_4}=75\%\cdot0.2=0.15\left(mol\right)\)
\(\Rightarrow n_{C_4H_8}=0.2-0.15=0.05\left(mol\right)\)
\(C_2H_4+3O_2\underrightarrow{^{^{t^0}}}2CO_2+2H_2O\)
\(C_4H_8+6O_2\underrightarrow{^{^{t^0}}}4CO_2+4H_2O\)
\(V_{O_2}=\left(0.15\cdot3+0.05\cdot6\right)\cdot22.4=16.8\left(l\right)\)
\(V_{CO_2}=\left(0.15\cdot2+0.05\cdot4\right)\cdot22.4=11.2\left(l\right)\)