(Solved): please help  1. The IUPAC name of the compound below is: a. 2-bromo-4,4-diethylpentane b. 4-bro ...

1. The IUPAC name of the compound below is: a. 2-bromo-4,4-diethylpentane b. 4-bromo-2,2-diethylpentane c. 2-bromo-4-ethyl-4-methylhexane d. 3-(2-bromopropyl)-3-methylpentane 2. Assuming that \( \mathrm{Br} \) is larger than \( \mathrm{Cl} \), which description below is correct regarding the most stable conformation of trans-1bromo-3-chlorocyclohexane: a. both \( \mathrm{Br} \) and \( \mathrm{Cl} \) are equatorial b. both \( \mathrm{Br} \) and \( \mathrm{Cl} \) are axial c. \( \mathrm{Br} \) will be axial and \( \mathrm{Cl} \) will be equatorial d. \( \mathrm{Cl} \) will be axial and \( \mathrm{Br} \) will be equatorial e. none of these. 3. The IUPAC name of the following molecule is: a. \( (1 R, 2 S, 4 S) \) 2-bromo-4-chloro-1-methylcyclohexane b. \( (1 S, 2 S, 4 S) \) 2-bromo-4-chloro-1-methylcyclohexane c. (1S,2S,4R) 2-bromo-4-chloro-1-methylcyclohexane d. \( \quad(1 R, 2 R, 4 R) \) 2-bromo-4-chloro-1-methylcyclohexane e. none of these 4. What is the hybridization of the center carbon in the compound below? \[ \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}=\underline{\boldsymbol{C}}=\mathrm{CHCH}_{2} \mathrm{CH}_{3} \] a. \( s p^{3} \) b. \( s p^{2} \) c. \( s p \) d. more than one of these e. none of these