Draw Fischer projections for the following compounds and tag any asymmetric carbon with an asterisk (*). Keep the carbon chain vertical with carbon 1 at the top.

a. (S)-butane-1,3-diol
b. (R)-1,2-dibromopropane

For each of the following Fischer projections, identify and label the (R) or (S) configurations of asymmetric carbon atoms.

Determine the absolute configuration of each of the chiral centers in the following structure.

Determine the absolute configuration of each of the chiral centers in the following structure.

The given Fischer projection on the left is equivalent to the line-angle structure. Are the labels (S) and (R) at each chiral center on the right correct?

Provide the absolute configuration (R or S) of the given molecule's Fischer projection.

For the molecule below: 

i) Encircle the chiral centers. 

ii) Label each chiral carbon as (R) or (S). 

iii) Draw the internal plane of symmetry, if applicable. 

iv) Label as chiral or achiral. 

v) Identify if it is a meso compound.