Answers by visitors named: Bill Nye the Science Guy

a) Iodide is a strong nucleophile but a weak base, so SN2 is the preferred reaction. Only the bromine on C1 is eligible to undergo SN2, so that one will be replaced by iodide. b) Silver ion tends to suck off a halide ion and leave a carbocation, which means E1 and SN1. If there's only one equiv, then the tertiary bromide on C4 is the one that will go. The resulting carbocation can give: E1 products 5-Br-2-Me-2-pentene (major, trisub) and 5-Br-2-Me-1-pentene (disub, minor). SN1 product 5-bromo-2-ethoxy-2-methylpentane

awwapp(dot)com/s/76/50/e4.png for my rough sketch of the graph Vertex: (-1,-4)

just stay in the class it is an honors class and your first high school honors class so it it good that your are experiencing a higher work load than a regular. you had a choice to be in the class and from my point of view you should face the consequences of your actions, honors class = more work you knew this and thus I personally think you should push out more work even though it is hard. a 80.6 is not that bad.