You've hit on all the same problems I have with these questions. They're so basic and virtually insignificant later on that they're "hard".
(1) The purpose of the question isn't about what's practical. It's about what's "right" according to the rules of significant figures, so as far as...
I'm hoping for verification here that I'm not crazy on some very very basic chemistry questions. I've worked 7 problems on a practice test (the real thing is next Tuesday). Only 2 of my answers agree with the answer key. Here are the most dramatic examples. Please tell me I'm not crazy...