Determine the absolute configuration (R/S) of the molecules (Fischer Projections) below:
(a) H F CH2CH3 CH2OH
(b) CH3 H CHO CH(CH3)2
For the molecule below, label each chiral center with its configuration (R/S) and draw the Fischer Projection of its (a) enantiomer and (b) one diastereomer.
CHO H OH HO H CH2OH