Show how 1-pentanol could be transformed into each of the following compounds by completing the given syntheses. (a) 2-Bromopentane PBr3 A (1) Hg (2) NaBH4OH B PBr]A c) 4-Methyl-4-nonanol A (1) Hg (2) NaBH4OH B acetone,H2OH2CrO4 D