This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

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\begin{array}{c} H \ | \ C = C - C \ | \quad \quad \quad \setminus \quad \nearrow \ H \quad \quad \quad \quad C = C \ \quad \quad \quad \quad \quad | \quad | \ \quad \quad \quad \quad \quad C = C \ \quad \quad \quad \quad \quad \nearrow \quad \setminus \ \quad \quad \quad \quad \quad C \end{array}
d) (i) Step 1: Tambua kitengo kinachorudiwa katika polima iliyotolewa. Polima ya polystyrene imeundwa na vitengo vinavyorudiwa. Kutoka kwenye muundo uliotolewa, kitengo kinachorudiwa ni .
Step 2: Badilisha kitengo kinachorudiwa kuwa monoma yake. Katika upolimishaji wa nyongeza (addition polymerization), monoma huwa na dhamana mbili ya kaboni-kaboni. Dhamana moja katika uti wa mgongo wa polima zilitoka kwenye dhamana mbili katika monoma. Hivyo, monoma ya polystyrene ni styrene, ambayo ina muundo .
Step 3: Chora muundo wa monoma. Monoma ina atomi mbili za kaboni zilizounganishwa na dhamana mbili. Kaboni moja ina atomi mbili za hidrojeni, na kaboni nyingine ina atomi moja ya hidrojeni na kikundi kimoja cha fenili ().
Muundo wa monoma ya polystyrene (styrene au phenylethene) ni:
Ambapo inawakilisha kikundi cha fenili (benzene ring).
Muundo kamili wa monoma ni:
\begin{array{c} H \\ | \\ C = C - C \\ | \quad \quad \quad \setminus \quad \nearrow \\ H \quad \quad \quad \quad C = C \\ \quad \quad \quad \quad \quad | \quad | \\ \quad \quad \quad \quad \quad C = C \\ \quad \quad \quad \quad \quad \nearrow \quad \setminus \\ \quad \quad \quad \quad \quad C \end{array} }(Kila kona ya heksagoni ina atomi ya kaboni, na kila kaboni katika pete ya benzene ina atomi moja ya hidrojeni isipokuwa kaboni iliyounganishwa na kikundi cha vinyl.)
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d) (i) Step 1: Tambua kitengo kinachorudiwa katika polima iliyotolewa. Polima ya polystyrene imeundwa na vitengo vinavyorudiwa.
This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.