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Need help with polyimerization question: How does inhibition of styrene polymerization work with benzoquinone? by metalfront in ChemicalEngineering
[–]noswad4 0 points1 point2 points 2 days ago (0 children)
My companies sagely r&d director. I think if you try to figure out the mechanism and push the electrons around the molecule you will find that electrons can be considered delocalized throughout the whole molecule (Which is why the book is probably calling it a stable radical) and the only opportunity for a moiety to pop off is a H. This is specifically regarding the hydroquinone. H radical is such a small little reactive atom, it will immediately quench any other radical that comes close to bumping into.
Honestly the book rings incorrect. Radicals by their very nature aren't considered stable. If radicals exist in any appreciable amount the polymerization should be able to continue. The only way you will stop the chain reaction is with termination.
Maybe the quinone radical is stable and has a significantly lower Gibbs energy than the oligimeric radical but I would be surprised... I looked it up and PBQ Gibbs of formation is -150 kJ/mol vs. 215 kJ/mol. For styrene. So I guess this could also be a possibility. It could just make the forward reaction endergonic.
Go to office hours and see what your prof says and report back.
[–]noswad4 2 points3 points4 points 2 days ago* (0 children)
You are correct. Quinones soak up radicals which are needed to sustain polymerization. They are consumed in the process. Pbq, thq, hq, and mtbhq all work the same way. Peroxides create radicals and are used as initiators. They are called catalyst in industry but this is a misnomer as they are consumed.
As I understand it, the quinone typically releases an H radical from the alcohol group that is really fast reacting and terminates another radical. The quinone itself does not stay a radical.
Replace MoBo or MoBo and CPU? by noswad4 in buildapc
[–]noswad4[S] 0 points1 point2 points 4 months ago (0 children)
Unfortunately, no. I don't have one to test them in. I can't imagine that 3/3 or the GPUs are shot vs. the MoBo.
Replace MoBo or MoBo and CPU?Troubleshooting (self.buildapc)
submitted 4 months ago by noswad4 to r/buildapc
Replace just the motherboard, or motherboard and CPU? by [deleted] in buildapc
[–]noswad4 0 points1 point2 points 4 months ago (0 children)
Cards were a generous gift from a coworker. I dont need a new card I need a mobo.
Abortion should not be crime, says doctors' union by SatishVishain in worldnews
[–]noswad4 46 points47 points48 points 9 months ago (0 children)
Wow, compelling argument.
HOLY SHIT THIS IS HUGE PEDES! The FBI got a FISA warrant to monitor a former trump advisor last summer. by RaginRepublican in The_Donald
[–]noswad4 2 points3 points4 points 1 year ago (0 children)
So there was probable cause then.
stockAday: Honeywell or Moneypit? $HON by shane_stockflare in investing
[–]noswad4 1 point2 points3 points 1 year ago (0 children)
I would argue that Emerson Electric is much more of a competitor on the automation and controls front, they operate DeltaV, Provox, Fisher Controls, MicroMotion, Novaspect Consulting. In fact, I would say that they rival $ROK. Honeywell's major product in the ACS division is its distributed control system, which I believe Emerson has the major market share of. $ROK operates more on the PLC market, which many companies have been slowly turning away from for a more integrated DCS solution which lends itself more easily to 'Big Data' and 'IoT'.
LPT: Have a friend call up your ex-employers pretending to be a potential employer to see what they say about you by [deleted] in LifeProTips
Everyone is giving you the black-and-white, but truthfully it is grey. If they give a negative review and cite specific examples, like he consistently clocked in late and they have the time cards to probe it, then it wouldn't be considered illegal. If they are just saying you are a shitty person and like to sniff farts, then they could be exposing them or their company to a slander or defamation suit, which can be difficult to prove, especially if you are not in a single party consent state (only one person has to give permission to record a conversation). So the answer is yes and no, but practically no.
My wife has a bum back and is more uncomfortable the more upright she sits. What theater has the best reclining seats around here? (self.nwi)
submitted 2 years ago by noswad4 to r/nwi
Happy Halloween assholes (i.imgur.com)
submitted 2 years ago by noswad4 to r/pokemon
Science AMA Series: I’m Clint Edwards, a researcher at Scripps Institution of Oceanography at the University of California, San Diego. I study coral reef ecology, and use large-scale images to study spatial dynamics at coral reefs around the world. AMA! by Clint_Edwards in science
[–]noswad4 10 points11 points12 points 3 years ago (0 children)
Could you link us to some of the maps that you have used? How are the maps generated? (satellites? flyovers? aggregated underwater photography?)
Science AMA Series: I’m Dr. Michelle Boone, Associate Professor at Miami University of Ohio, and I’ve studied the effects of pesticides on amphibians for the last 19 years. AMA! by Prof_Michelle_Boone in science
[–]noswad4 17 points18 points19 points 3 years ago (0 children)
What single step you would like to see the EPA make to change its risk assessment process for the better, what would it be and why?
/R/Science is about pseudoscience and nothing else. Want proof? They banned the only person that knows about real horticulture (me) from the subreddit after I've been on the BBC for my advances in horticulture that nobody else has been able to do. by khyberkitsune in sciencefiction
[–]noswad4 1 point2 points3 points 3 years ago (0 children)
yeah... I am one of those mods you were talking about...
[–]noswad4 2 points3 points4 points 3 years ago (0 children)
I am shaking in my boots.
This just happened today by [deleted] in fffffffuuuuuuuuuuuu
[–]noswad4 2 points3 points4 points 5 years ago (0 children)
You are fucking awesome.
Turns out I've been playing Dishonored all wrong... by LtThunderpants in gaming
[–]noswad4 0 points1 point2 points 5 years ago (0 children)
Have as much fun playing how you want, then watch all of the endings on youtube. Problem solved.
Fuck. You. by CnHasDox in AdviceAnimals
I, too, have this. If only it worked for galleries.
[–]noswad4 3 points4 points5 points 5 years ago (0 children)
Websense sometimes makes nosense.
Okay conservatives, post your rational arguments that we constantly bury here. I won't downvote any of them. Hopefully others will follow suit. by hsmith711 in politics
[–]noswad4 -1 points0 points1 point 5 years ago (0 children)
Most economists would agree that many regulations cause allocative inefficiency in the economy and can be controlled by consumer demand.
Doubt cast on HDL (aka 'good cholesterol') hypothesis by joshsalvi in science
Direct link to research: here.
Can Reddit offer any explanations as to why these rocks spontaneously combusted? Woman burned by rocks she found on the beach. by Yup_repost in science
[–]noswad4[M] 0 points1 point2 points 5 years ago (0 children)
Next time, please post scientific questions to /r/askscience
Everyone who comes into my room: "What is that? Some kind of sword-gun?" by sahkuh in gaming
You can find them at Comicon or Blizzcon.
I got the same props at Comicon last year, 45USD for the buster and gunblade. They are not stainless, just nickel plated. They do however work reasonably well when sharpened. I split quite a few pumpkins last Halloween (I was Squall).
What is a total lie you some how got away with? by DribDrubs in AskReddit
[–]noswad4 0 points1 point2 points 6 years ago (0 children)
My College roommates thought I was colorblind for two years.
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