Aii giúp emm vs aaaaaaaaa

Em tham khảo nha:

\(\begin{array}{l}
a)\\
{C_2}{H_4} + 3{O_2} \xrightarrow{t^0} 2C{O_2} + 2{H_2}O\\
{n_{{C_2}{H_4}}} = \dfrac{{4,48}}{{22,4}} = 0,2\,mol\\
{n_{{O_2}}} = 3{n_{{C_2}{H_4}}} = 0,6\,mol\\
{V_{{O_2}}} = 0,6 \times 22,4 = 13,44l\\
{V_{kk}} = 5{V_{{O_2}}} = 13,44 \times 5 = 67,2l\\
b)\\
{n_{{H_2}O}} = 2{n_{{C_2}{H_4}}} = 0,4\,mol\\
{m_{{H_2}O}} = 0,4 \times 18 = 7,2g\\
c)\\
C{O_2} + Ca{(OH)_2} \to CaC{O_3} + {H_2}O\\
{n_{CaC{O_3}}} = {n_{C{O_2}}} = 0,2\,mol\\
{m_{CaC{O_3}}} = 0,2 \times 100 = 20g
\end{array}\)