Predict the products and mechanisms of the following reactions. When more than one product or mechanism is possible, explain which are most likely.
(a) 1 -bromohexane $+$ sodium ethoxide in ethanol
(b) 2 -chlorohexane $+\mathrm{NaOCH}_{3}$ in methanol
(c) $t$ -butyl bromide $+\mathrm{NaOCH}_{2} \mathrm{CH}_{3}$ in ethanol
(d) $t$ -butyl bromide heated in ethanol
(e) isobutyl iodide $+\mathrm{KOH}$ in ethanol/water
(f) isobutyl chloride $+\mathrm{AgNO}_{3}$ in ethanol/water
(g) neopentyl bromide $+\mathrm{AgNO}_{3}$ in ethanol/water
(h) 1-bromo-I-methylcyclopentane heated in methanol
(i) 1 -bromo- 1 -methylcyclopentane $+\mathrm{NaOEt}$ in ethanol