I'm not going to worry too much about this test because I found it to be pretty far off from my AAMC's - PS was much harder, VR was much easier (got a 15 on VR and only got a 12 max on AAMC 7-10, and PS I got an 8 where my minimum AAMC 7-10 was 10). Great practice, just not a good diagnostic IMO. BR, to their credit, does say that this is the "easiest" but still that doesn't factor for the harder PS section. BS was also pretty tough but my score was more in line with previous diagnostics.
But anyway, I'm curious about the use of "labile" in #21. This really tripped me up because it is an uncommon usage word outside of describing mood swings in psychiatry, and I have never seen it applied to chemistry before. It really tripped me up because I'm trying to solve the problem while also guessing what labile means. Ack!
I'm not sure if BR put that in to prep students for the fact that AAMC can pull all sorts of stuff outta their butt on test day, but it seemed pretty strange to me. Once I figured out that labile = reactive, the problem key makes sense but man that was a tough passage!
ADDED: the other thing I found confusing about this problem was the use of cis-trans for a molecule that has only one central atom. Usually we've seen (and this includes BR books) cis/trans and E/Z being used for a chain of central atoms. It is pretty unusual, and if someone could explain how cis/trans even exists for this type of molecule it would help me understand.
But anyway, I'm curious about the use of "labile" in #21. This really tripped me up because it is an uncommon usage word outside of describing mood swings in psychiatry, and I have never seen it applied to chemistry before. It really tripped me up because I'm trying to solve the problem while also guessing what labile means. Ack!
I'm not sure if BR put that in to prep students for the fact that AAMC can pull all sorts of stuff outta their butt on test day, but it seemed pretty strange to me. Once I figured out that labile = reactive, the problem key makes sense but man that was a tough passage!
ADDED: the other thing I found confusing about this problem was the use of cis-trans for a molecule that has only one central atom. Usually we've seen (and this includes BR books) cis/trans and E/Z being used for a chain of central atoms. It is pretty unusual, and if someone could explain how cis/trans even exists for this type of molecule it would help me understand.
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