Q11: The difference in the lengths of an arc and its subtended chord on the earth surface for a distance of 18.2 km, is only A. 1 cm B. 5 cm C. 10 cm D. 100 cm. 6:49 PM Name: 9. Using 3D representations, draw all stereoisomers possible for the structure below: OH OH OH 10. Consider the 3D representation below: viii. Br vii. Determine the absolute configuration (R/S) of the chiral center R Convert the 3D drawing into Fischer projection H3C R NH HC+= to ix. Draw the enantiomer using 3D representation and Fischer projections COH R 11. Assign absolute configuration (R/S) to each stereocentre in the following molecules: Br HN HO H R 1100 CHO H3CHC -CI ID: H S H you -OH COH S No chirol HO CHO HC | CO,CH3 COH S R HO -CH3