Làm giúp mình vs nhaa️

Em tham khảo nha:

\(\begin{array}{l}
2)\\
{C_4}{H_8}:C{H_2} = CH - C{H_2} - C{H_3}\\
C{H_2} = C(C{H_3}) - C{H_3}\\
C{H_3} - CH = CH - C{H_3}\\
5)\\
a)\\
C{H_4} + 2{O_2} \xrightarrow{t^0} C{O_2} + 2{H_2}O\\
b)\\
{n_{C{H_4}}} = \dfrac{{16,8}}{{22,4}} = 0,75\,mol\\
{n_{{O_2}}} = 2{n_{C{H_4}}} = 1,5\,mol\\
{V_{kk}} = 1,5 \times 22,4 \times 5 = 168l\\
c)\\
{n_{C{O_2}}} = {n_{C{H_4}}} = 0,75\,mol\\
{m_{C{O_2}}} = 0,75 \times 44 = 33g
\end{array}\)