Describe some of the weaknesses of the Articles of Confederation. How did these contribute to the problems that the nation was experiencing in the 1780s and how did it pave the way to the adoption of the U. S. Constitution.

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.