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07:38
1
Q: Custom close reason text for "homework"

orthocresolRecently, Stack Exchange has allowed moderators to customise the wording that is associated with custom close reasons. Here I would like to focus on (by far) the most used close reason on the site, aka "homework". I have written up some short blurbs; it would be very nice to get some feedback on ...

 
3 hours later…
11:02
2
Q: Reagent choice in the formation of Wittig reagent

234ff During the formation of Wittig reagent, BuLi is used as it is a VERY strong base (pKa = 50). According to Wikipedia, however, sulfur ylide is 'especially conveniently' made from dimsyl anion (pKa = 35), which is a relatively weaker base although it is also used for preparation of Wittig reagent....

11:35
0
Q: A clarification regarding the rejection of my recent edit

Firefox1921I apologize beforehand if this seems inappropriate, especially coming from a new user. Please view this link before I proceed: molecular orbital theory explaining molecular orbitals [P.S. : I've kept the original title of the question] Now, as you can see, this question has severe formatting issu...

11:50
2
Q: Which is the major product of bromination of 3-(dimethylamino)benzamide, ortho or para?

sara I know that A will most probably not happen because of high steric hindrance. However between B and C, will B become the major product? Because $\ce{-N(CH3)2}$ is less bulky compared to $\ce{C=O-NH2}$, so there will be less steric hindrance.

 
5 hours later…
16:50
The return of the medieval witchcraft units:
1
Q: Heat Transfer Coefficient Problem

air_nomadThe Problem An unusual reference gives the formula below for the heat transfer coefficient of an emulsion. $$H = 0.0061~\mathrm{(x^{0.6} + 0.038T) ⋅ V^{0.35}}$$ In the formula T, is the temperature in $ºF$, V is the flow rate of the emulsion in $\frac{ft}{min}$, X is a characteristic dimension in...

Sam
Sam
17:35
Hey guys
I kinda have a problem with my homework and was wondering if you could help me
Can you find out what salt you have with household appliances?
I am evaporating water and have salt as a residue
How can I know which salt it is?
Please
Somebodyyyyyyy : (
 
5 hours later…
22:47
Was Walter Kohn wrong?
15
Q: Kohn's statement that "the many-electron wave function is not a legitimate scientific concept" for large systems

ProfMIn Kohn's Nobel Lecture, he claimed that: "In general the many-electron wave function $\Psi(\mathbf{r}_1,\ldots,\mathbf{r}_N)$ for a system of $N$ electrons is not a legitimate scientific concept, when $N\geq N_0$ where $N_0\simeq10^3$." He explains this in two ways: the first is that $\Psi$ cann...


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