$2.$ How many peaks should we expect in the proton NMR of the following compounds? Which H would show up as the same peak? On the following molecules, indicate which hydrogens are equivalent. Label them how ever you wish $($a$,$b$,$c$,$ colors, symbols, etc.How many peaks should we expect in the proton. NMR of the following compounds? Which $H$ would

show up as the same peak? On the following molecules, indicate which hydrogens are equivalent.

Label them how ever you wish $($a$,$b$,$c$,$ colors, symbols, etc.$)$