Chapters 14 and 15 describe krakauer's successful attempt when he was 23 years old to climb the "devil's thumb," a mountain in alaska. he also describes what he thinks are parallels between mccandless and himself. do these chapters increase his credibility for writing this book, or do they undermine his credibility by making it seem like he has his own agenda and is not objective?

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.