can someine ezplain statemnt 2 as if im an amateur

basically my prof is offering extra credit for rechecking your work before she releases the rubric and i want to make sure i know whats wrong and whats right. much appreciated

The chemistry teachers in my area aren't good and the chemistry department in my area is notorious for being bad. I am currently struggling with chemistry. On top of this I believe my professor is borderline schizophrenic. Sometimes he doesn't really even teach for half the class and is just crashing out about his personal life. It seems he has lost his touch for teaching imo. I try to be nice to him but it is never reciprocated back. I am trying to understand his teaching style but it seems disorganized. Class lecture is just always unorganized and I can't seem to understand what is going on. I get a gist of it but I struggle mainly with math part/unit conversion/dimensional analysis. He gets off on the fact not passing people. And I have tried to ask him questions during tutoring but no one actually goes. Every time I go he looks annoyed that I asked a question and or looks at me like I'm stupid. I've being watching organic chemistry tutor I get a gist of what they are talking about but in reality I still struggle with the topics on the test and on top of this the worksheets he gives out are really simple concepts but it does not translate and is not specific of what he wants....but when I get to the test it is very specific which makes it hard to understand because he says do the "worksheets and review" and you should be fine...yet the tests look nothing like the review or worksheets...so how do I know what he wants when I can't understand what he wants...and then he gets annoyed when I don't understand what he wants...it's been really frustrating. On top of this he says stuff like sometimes people aren't meant for certain things

I understand how u can draw out and cancel vectors to determine polarity but I’m so confused on how dro do this when there are multiple central atoms? Ik u look at them differently and be like ok this part is polar but idk what else since if one part is polar cant the whole molecule still be polar?

I’m currently learning about Sn2 mechanism, how do you determine when you should draw your halogen on a wedge or dash when drawing the reactants?

I initially thought it was (R) = place halogen on a wedge, (S) = place halogen on a dash, but it turns out that’s not accurate lol.

I tried looking up YouTube videos, but none of them have problems where they only give you the name of a alkyl halide and leave you to draw the reactants yourself, the videos always start with the reactants already drawn

I know that both s's have to be bonded together and that the formal chargers have to be minimized, but I have tried various different ways but I still keep getting it wrong. Any solutions for the issue?

I don't see how the ethoxide catalyzes this reaction. The only thing that comes to mind is if it deprotonates the amino groups but it can't do that due to the difference in Pk

guys i’m so confused how does 2-pentyl butanoate make sense. I have no idea how to draw it bc i thought we didn’t have to number esters. I would appreciate any help, i’m in a grade 12U class