(Solved): Please explain #8 !!! 7) Write the condensed formula for the following alkenes and alkynes. (4 marks ...

7) Write the condensed formula for the following alkenes and alkynes. (4 marks) a) oct-1-ene ${\mathrm{H}}_2\mathrm{C}={\mathrm{CACH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$ b) 2,4-dimethylhex-2-ene c) but-2-yne d) 4-ethyl-3-methylhex-1-yne 8) Draw the line diagrams for both cis-trans isomers of 5-methylhex-2-ene. Label each isomer. (2 marks) 9) Draw and name one (1) structural isomer of the cis-trans isomers of 5-methylhex-2-ene from question 7. (2 marks)