Answer: below
Explanation: One possible synthetic pathway for preparing 3-bromoethylbenzene from benzene involves the following steps:
Nitration: Benzene is nitrated using nitric acid and sulfuric acid as the nitrating agent to form nitrobenzene.
Reduction: Nitrobenzene is reduced using zinc and hydrochloric acid to form aniline.
Acylation: Aniline is acylated using acetyl chloride to form N-phenylacetamide.
Bromination: N-phenylacetamide is brominated using bromine and hydrobromic acid to form 3-bromoacetanilide.
Deacylation: 3-bromoacetanilide is deacylated using sodium hydroxide to form 3-bromoaniline.
Alkylation: 3-bromoaniline is alkylated using ethylene oxide and potassium carbonate to form 3-bromoethylamine.
N-alkylation: 3-bromoethylamine is N-alkylated using acetic anhydride to form 3-bromo-N-ethylacetamide.
Hydrolysis: 3-bromo-N-ethylacetamide is hydrolyzed using sodium hydroxide to form 3-bromoethylbenzene.
Note that this is just one possible synthetic pathway and there are multiple variations and alternative routes that can be used to prepare 3-bromoethylbenzene from benzene.