Search found 74 matches

by AFedchuck
Sat Aug 14, 2010 5:43 am UTC
Forum: Science
Topic: Question about metal compression
Replies: 7
Views: 1679

Re: Question about metal compression

I think you're being too negative - the approach suggested by the OP is definitely on the right track - it works pretty well for the noble gases (if you use an appropriate potential Lennard Jones 6/12 or Buckingham work ok IIRC). I think it also works for simple metals - but I don't have my notes ne...
by AFedchuck
Mon May 03, 2010 6:46 pm UTC
Forum: Science
Topic: Amphoteric
Replies: 19
Views: 2464

Re: Amphoteric

oxoiron - I'm sorry about my post, I did misrepresent you. I do think the issue got slightly muddied: in part because of the choice of species to discuss this (AlOH3 is not an ideal exemplar) and partly because I didn't fully explain myself. However, saying that: JSB, the full definition in the gold...
by AFedchuck
Sun May 02, 2010 7:10 pm UTC
Forum: Science
Topic: Amphoteric
Replies: 19
Views: 2464

Re: Amphoteric

Yes - it's highly unlikely that the core electrons are going to be involved - it would be the O lone pairs that would donate.
by AFedchuck
Sun May 02, 2010 5:00 pm UTC
Forum: Science
Topic: Amphoteric
Replies: 19
Views: 2464

Re: Amphoteric

oxoiron - IUPAC use amphoteric in the definition to refer to Bronsted acidity. I think insisting it only means Lewis acidity is somewhat confusing. ETA: Do you know any complexes where Al(OH)3 acts as a lewis base? I think this system is a bit too complex to demonstrate the idea you mean, as there a...
by AFedchuck
Wed Mar 24, 2010 9:37 pm UTC
Forum: Science
Topic: Water's shape
Replies: 23
Views: 2820

Re: Water's shape

Yeah, you're right to think that changing the dimensions changes the properties quite a lot. You'd have to reinvent chemistry from the ground up to do things in 2D as far as I can tell. Sorry.
by AFedchuck
Wed Mar 24, 2010 9:35 pm UTC
Forum: Science
Topic: Cubic Zirconia vs Diamonds
Replies: 49
Views: 5710

Re: Cubic Zirconia vs Diamonds

Nearly 5000 C? Don't know where you live, but from where I'm from that's rather warm. Actually, I've read that in the presence of oxygen, diamonds will burn at temperatures of ~700C. I found a site that mentioned the temperature you listed, but the wikipedia entry reports a significantly lower valu...
by AFedchuck
Wed Mar 24, 2010 9:31 pm UTC
Forum: Science
Topic: Polarity of a Chromatography Solvent...
Replies: 9
Views: 3087

Re: Polarity of a Chromatography Solvent...

I assume cellulose is the stationary phase (and you made a typo) if so, yes, the higher Rf is due to the lower polarity of the mobile phase.
by AFedchuck
Tue Mar 23, 2010 11:09 pm UTC
Forum: Science
Topic: Cubic Zirconia vs Diamonds
Replies: 49
Views: 5710

Re: Cubic Zirconia vs Diamonds

ALSO YOU GUYS:, diamonds evaporate in relatively low temperatures. Nearly 5000 C? Don't know where you live, but from where I'm from that's rather warm. Regarding spiritual or industrial uses, AFAIK, diamonds aren't really that interesting beyond their hardness, and mass-produced industrial diamond...
by AFedchuck
Tue Mar 23, 2010 10:53 pm UTC
Forum: Science
Topic: Water's shape
Replies: 23
Views: 2820

Re: Water's shape

This would likely affect the bond strength of water, thus shifting it's freezing and boiling points. Depending on how much, it could be quite catastrophic. Bond strengths of water is a terrible turn of phrase - if you interpret (in the natural sense) as O-H bond enthalphy, this will have close to n...
by AFedchuck
Fri Dec 18, 2009 12:35 am UTC
Forum: Science
Topic: Isomers of C6H12
Replies: 28
Views: 21842

Re: Isomers of C6H12

Not *all* of those are isomers; they list 3-pentene, (Z) 3-pentene and (E) 3-pentene as separate entities; 3-pentene is only meaningful if you've somehow got enough heat to rotate that bond around, making the E-Z distinction useless, and then the (E) and (Z) isomers are meaningless, since they don'...
by AFedchuck
Fri Dec 18, 2009 12:25 am UTC
Forum: Science
Topic: Scientific Method
Replies: 97
Views: 14426

Re: Scientific Method

(Although, I am curious as to how many great revolutionary discoveries have been made using the scientific process.) All of them? How about none of them? If this method is how science is done, how come no journals (AFAIK) insist on formal presentation of any of these separate steps? This is essenti...
by AFedchuck
Sat Nov 14, 2009 7:25 pm UTC
Forum: Science
Topic: Isomers of C6H12
Replies: 28
Views: 21842

Re: Isomers of C6H12

Just to point out, cis/trans isomerism will affect many of your alkenes (except the ones with duplicated groups on either side). There will also be cis/trans isomerism in your ring compounds - there will be two diastereoisomers of 1,2-dimethylcyclobutane, for example, with the methyl groups on the s...
by AFedchuck
Sat Sep 05, 2009 6:57 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

H2SO4 - I'll try to enlighten you about why you're very confused. Marxism is a political philosophy which is relatively complete (I don't mean correct necessarily) - it has core tenets (the belief in class, Marx's theories on capital in particular, read an introduction to Marxism if you want a fulle...
by AFedchuck
Fri Sep 04, 2009 4:52 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

H2SO4, keep adding to my dossier. None of those men even remotely resemble a Marxist now. Obama, well ffs, if you think he's a Marxist ... next you'll be saying he's a Muslim and not American too. True, Van Jones was a member of a Marxist party at one point, but this sentence proves he's not: Only t...
by AFedchuck
Fri Sep 04, 2009 12:02 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

Dil - a few points and a few questions, thank you for an elegant post detailing a common interpretation of libertarianism. I think the most important point to make is that many of your criticisms are in fact attacking not socialism but the current US system - the condemnation of the buying of electi...
by AFedchuck
Thu Sep 03, 2009 8:02 am UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

I'm a little confused by the grammar of the second sentence. Is "no such thing" in this case mean that the state isn't protecting me from people that infringe on my "negative liberty"? (I put "negative liberty" in quotes because I personally refuse to use Marxist terms...
by AFedchuck
Wed Sep 02, 2009 10:49 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

It is impossible for the state to guarantee that you own (as in have use of) any particular piece of property - after all, they can't always stop someone stealing your stuff. And the service the state provides in terms of justice, policing and production of law is not free - but it provides it free....
by AFedchuck
Wed Sep 02, 2009 8:06 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

Ooh, somebody posted something interesting. A few relatively quick points - the inclusion of the word theocratic in 'theocratic socialism', I regard as particularly spiteful (from The Church of Ayn Rand, no less). You regard it is as theocratic because it propounds socialism regardless of whether it...
by AFedchuck
Mon Aug 17, 2009 6:40 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

I think the mere empirical fact that capitalist societies have done far more for the poor than any planned economy should weigh against the emotional pull of the "poor downtrodden wage slave." Simply compare China before and after 1978. Which regime was actually more compassionate and did...
by AFedchuck
Sun Aug 16, 2009 10:31 am UTC
Forum: Serious Business
Topic: How much health care should be considered "Basic care"?
Replies: 44
Views: 5272

Re: How much health care should be considered "Basic care"?

Once you are ill, the company has every incentive to simple fuck you over, unless there is a counter incentive not too. And there simply isn't one. But that's a fixable problem. It also seems easier to fix than creating a perfectly competent and moral alternative. First, publish medical loss ratios...
by AFedchuck
Sun Aug 16, 2009 10:23 am UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

Actually, you can tell the tax collector that you'd rather work with someone else - by voting. If the tax was for a tyranny, you would be right, it would be compulsion at the end of a gun. But it's not. Really? Because my odds of changing, say, the Presidential election by voting are about the same...
by AFedchuck
Sat Aug 15, 2009 9:18 pm UTC
Forum: Serious Business
Topic: How much health care should be considered "Basic care"?
Replies: 44
Views: 5272

Re: How much health care should be considered "Basic care"?

If markets work at all, they work well at maxmising their incentives. What is the counter-incentive to an insurance company screwing you over when you're ill? They force you to pay for your own treatment, which will nearly bankrupt you - any redress will be protracted, costly and probably impossibl...
by AFedchuck
Sat Aug 15, 2009 9:07 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

i know I'm coming in late, but I've read the posts and hopefully I'll be able to add something meaningful. Four things: 1) I think the problem here is that we're arguing between Libertarianism and Socialism, which are essentially political / economic positions. What we should be arguing about is be...
by AFedchuck
Sat Aug 15, 2009 8:52 pm UTC
Forum: Serious Business
Topic: Healthcare Reform: What stops the gov't from going further?
Replies: 47
Views: 6121

Re: Pro-Obamacare-ites: What stops the gov't from going further?

And yes, the federal government does have limitless power. I'm sorry; I thought you knew. Hehe :) This is an important issue because you can't pick and choose what the constitution means. If the government can give people health care, than nothing prevents it from going into war without declaring w...
by AFedchuck
Thu Aug 13, 2009 5:41 pm UTC
Forum: Serious Business
Topic: How much health care should be considered "Basic care"?
Replies: 44
Views: 5272

Re: How much health care should be considered "Basic care"?

3. Doctors are more relaxed and have fewer ethical misgivings. They never have to refuse a patient on the grounds of inability to pay. EMTALA in the United States means that nobody is turned away without an appropriate screening exam, stabilization and treatment. 3 in particular is wrong. The docto...
by AFedchuck
Wed Aug 12, 2009 6:52 pm UTC
Forum: Serious Business
Topic: Libertarianism, socialism, and differing views of reality
Replies: 212
Views: 26197

Re: Libertarianism, socialism, and differing views of reality

Well, yes, but such a view allows a wide range of actions that are generally opposed by libertarians on grounds of property rights. Taxes and imminent domain are also perfectly legitimate ways to appoint a new owner to property, and both can in many situations be defended by an appeal to efficiency...
by AFedchuck
Wed Aug 12, 2009 6:37 pm UTC
Forum: Serious Business
Topic: How much health care should be considered "Basic care"?
Replies: 44
Views: 5272

Re: How much health care should be considered "Basic care"?

Healthcare is a positive right rather than a negative right. Essentially this means It Costs Money. It is understandable that some states do not guarantee their citizens these positive rights if they cannot afford to do so. In deciding the moral acceptability of a positive right the deciding factor...
by AFedchuck
Tue Aug 04, 2009 5:25 pm UTC
Forum: Science
Topic: Why can dissolving salt in water be exothermic/endothermic?
Replies: 21
Views: 25135

Re: Why can dissolving salt in water be exothermic/endothermic?

I dissagree his reply was in my opnion excellent, Entropy is at the heart of chemistry while quantum mechanics may allow you to calculate the energy of the bonds broken and formed in the reaction, it is the entropy which will allow the reaction to take place. This is important as otherwise the endo...
by AFedchuck
Wed Jul 01, 2009 10:40 am UTC
Forum: Science
Topic: Equilibrium vs. Rate constant question
Replies: 12
Views: 4069

Re: Equilibrium vs. Rate constant question

Sorry, post was too short and not clear enough - yes of course, you need the TS free energy, and you can only calculate this for simple systems where you know the elementary steps, but still, there is some theoretical basis, which is all I was attempting to claim. And the A factor can be determined ...
by AFedchuck
Sun Jun 28, 2009 2:29 pm UTC
Forum: Science
Topic: Equilibrium vs. Rate constant question
Replies: 12
Views: 4069

Re: Equilibrium vs. Rate constant question

Further to Yggradasil, it's possible to calculate the rate constant of simple reactions using stat mech as well - by using very similar methods to the calculation of equilibrium constants, but for transition states.
by AFedchuck
Sun Jun 28, 2009 2:24 pm UTC
Forum: Science
Topic: You might be a chemistry major if...
Replies: 139
Views: 42163

Re: You might be a chemistry major if...

Gold, boring?
Might want to take a look at a few catalysts (C-H activation), aurophilicity or its high electron affinity. You want boring, you need to look at the lanthanides.
by AFedchuck
Wed Jun 17, 2009 5:43 pm UTC
Forum: Science
Topic: [Chemistry] Understanding Markovnikov's Rule
Replies: 12
Views: 2447

Re: [Chemistry] Understanding Markovnikov's Rule

Yep, interconversion will lead to an equilibrium.
If the reaction is simple, as in A+B-> C or A+B-> D, the ratio of the rates of the two reactions will be the ratios of the product, so yes, if you have two reactions occuring at the same speed they will give equal yields.
by AFedchuck
Wed Jun 10, 2009 10:57 am UTC
Forum: Science
Topic: [Chemistry] Understanding Markovnikov's Rule
Replies: 12
Views: 2447

Re: [Chemistry] Understanding Markovnikov's Rule

The explanations above are all correct, but you made an interesting point - wrong - but definitely interesting. To me, this seems to be a rather 'its just the way it is' explanation. I was wondering why this happens. I had a quick search on the internet and found this site (http://www.chem.ucalgary....
by AFedchuck
Sun May 17, 2009 9:07 am UTC
Forum: Language/Linguistics
Topic: Question for a friend...
Replies: 12
Views: 2067

Re: Question for a friend...

1) is the most natural, 2) is wrong, 3) is archaic sounding.
Should in the last two examples means the same as were to, so compare 2) to *1) If he were to come, what will we do?
This is all initial reactions, so I can't provide deep syntactical explanantions beyond the above.
by AFedchuck
Thu May 07, 2009 10:50 am UTC
Forum: Science
Topic: Negative pH
Replies: 20
Views: 2561

Re: Negative pH

http://media.iupac.org/publications/pac/1985/pdf/5703x0531.pdf This is the definition of pH - though it isn't so useful as it essentially uses a reference. The hammet acidity function is what you want if you want to extend your definitions to other solvents/larger ranges. Interestingly, you can exte...
by AFedchuck
Mon Apr 06, 2009 8:04 pm UTC
Forum: Serious Business
Topic: Popperian falsificationism: useful idea, or naïve/outdated?
Replies: 29
Views: 4998

Re: Popperian falsificationism: useful idea, or naïve/outdated?

I think one thing to point out first is that Popper's falsification is more nuanced than the science bloggers seem to suggest - his most important works don't suggest that you throw out a theory because one experimental result 'disproved' it - he was well aware of the fallibility of experimental evi...
by AFedchuck
Sun Mar 29, 2009 6:32 pm UTC
Forum: Science
Topic: Recommend me a Chemistry Book
Replies: 4
Views: 1054

Re: Recommend me a Chemistry Book

Keeler + Wothers. Pretty comprehensive and clear. http://www.amazon.co.uk/Chemical-Structure-Reactivity-Integrated-Approach/dp/0199289301 Basic chemistry may not have changed much, but I do think many of the details have been sorted out a lot better, so some explanantions of the more esoteric events...
by AFedchuck
Sat Mar 28, 2009 5:33 pm UTC
Forum: Serious Business
Topic: Hip Hop Culture.
Replies: 30
Views: 4272

Re: Hip Hop Culture.

positive hip hop like De La Soul Wait, isn't De La Soul degrading to women as well? Hip-hop has very lax standards of being "positive". Avoiding to egotistically recount your life difficulties and how you crushed everyone in your way to prevail already puts you in a clean category, even i...
by AFedchuck
Sat Mar 28, 2009 4:52 pm UTC
Forum: Science
Topic: Theories that are right for the wrong reason
Replies: 32
Views: 4491

Re: Theories that are right for the wrong reason

Scientific theories in general.
All scientific theories are wrong. And probably will continue to be forever. However they do lead to scientific insight.
However, some theories are slightly more out there, and I imagine are more what you intended the thread to be about.
by AFedchuck
Thu Jan 29, 2009 8:07 pm UTC
Forum: Science
Topic: Phase of one molecule
Replies: 14
Views: 1447

Re: Phase of one molecule

No. a phase is only defined when there are a number of particles. I suppose you'd call it a gas if you had to.
Talk about temperature is neglecting pressure, which is pretty much impossible to define until you have a number of particles.

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