Altered State

Well, the atoms connectivity seems allright, but bond angles suck... The carbonyl carbons (the carbons from the C=O double bond) should have a trigonal plannar arrangement (120º angles). You might have acces to the software ChemDraw, which has a function, Clear up structrue, that can do this job for you.

It does it like that: http://upload.wikimedia.org/wikipedia/commons/thumb/5/53/Glyphosate_degradation.svg/820px-Glyphosate_degradation.svg.png

Huh, I've just remembered... Did you ever smell aqueous (typical lab concentration) ammonia? It is like extremelly strong pee, isn't it? But, did you ever smell pure liquid anhydrous ammonia? Do not do it..

It would depend on what R is. In general, the nucleophile (in this case Br-) would attack the less hindered carbon of the two that are bond to the ether oxygen, so if R is not a -C(Ph)3 o something like that, your compound would get cleaved to product B. Your suggesiton of both becoming bromides can be possible in case that more than one mole of HBr is used. The alcohol would just undergo a substitution due to acidic conditions.

Well, it might, because both are regioselectivity rules, but they are not the same and are not applied to the same scenarios.

If you have already figured out that you can predict its stereochemistry using Cram's rule, you probably already know what kind of reaction occurs. I can't see where you are stuck.

I particularly love ether smell. The worst thing I ever smell was cadaverine. I do not think I would ever get close to that s**t once again. And I also believe that I will never smell anything that stinks more than this guy.

Using a "quick" definition of bases, they tend to take protons away, and water/moisture has plenty of them, so bases usually react with water, (acid/base equilibrium) and that makes favorable the reaction of getting hydrated or even dissolving. But bases definitely do not "melt" in water. Melting only occurs above the melting temperature of a compound.

It is known as 2-methyl tetrahydrofuran I'd also say C... ...but not due to Markovnikov's rule, which only applies to electrophilic addition to alkenes. The reaction takes place though a mechanism where the Oxygen is protonated, and then the nucleophile (I-) will attack the most substituted carbon, so the most stable carbocation forms. It is something similar to the epoxides opening in acid media but in this case a REALLY strong acid is required for the molecule to open.

I liked this one! Cannot access to that, link is broken apparently

What avout this guy? Certainly, the concern about metallic mercury is its vapour.

It will precipitate out from pH between 2 and 11

I did not read the whole thread nor opened all the pictures/links, but there they are my favorite ones: IUPAC Periodic Table: Simple, nice and official http://www.iupac.org/fileadmin/user_upload/news/IUPAC_Periodic_Table-1May13.pdf My favorite one, it has nearly anything you may want to know about any element, and also most frequently used in chemistry constants http://www.vertex42.com/Files/pdfs/2/periodic-table_color.pdf This one is funny, it contains samples of most elements: http://imgur.com/a/lDHw9#5 Ah, and this one which displays the elements according to its realtive abundance on Earth: http://www.meta-synthesis.com/webbook/35_pt/relative_abundance.jpg

I can do that for you However, as AndresKiani already stated, the second one would be a minor contributor. The original structure would make a much more accurate representation of the real molecule electronic distributions.