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Vanadium Colloid
Do V(III) ions resemble Al ions? They may coprecipitate or substitute.
If vanadium isn't in solu ... |
10-11-2012 at 22:16
by: 12AX7 |
HBr from NaBr & H2SO4, and disappearing acetic acid!
Suckback can occur when the absorbing liquid absorbs the gas rapidly, sucking itself up into the tub ... |
10-11-2012 at 22:12
by: 12AX7 |
Magnesium Oxide Crucibles
Sintering takes place very slowly at roughly half the melting point. Where exactly depends on the m ... |
10-11-2012 at 18:41
by: 12AX7 |
The Gross LED - Need some PWM pointers
^
http://web.engr.oregonstate.edu/~moon/ece323/LM555.pdf
Plug Fig.4 into Fig.8. Easy with a s ... |
10-11-2012 at 18:25
by: 12AX7 |
HBr from NaBr & H2SO4, and disappearing acetic acid!
Would the assembly shown not be susceptible to suck-back? With only H2SO4 in the preceeding flask, ... |
10-11-2012 at 18:20
by: 12AX7 |
sodium fluoride from calcium fluoride and sodium phosphate
I expect the reaction would proceed in a melt as well.
Given the low solubilities, an autoclave w ... |
10-11-2012 at 18:18
by: 12AX7 |
Vanadium Colloid
15% aluminum, balance vanadium?
I'm surprised HNO3 did anything to it, it doesn't corrode aluminu ... |
10-11-2012 at 18:11
by: 12AX7 |
The Gross LED - Need some PWM pointers
Under motion, you'll want an even faster switching rate, like 1kHz. 100kHz is simply out of the que ... |
8-11-2012 at 21:21
by: 12AX7 |
Preparation of elemental phosphorus
[rquote=264326&tid=65&author=Magpie][rquote=264318&tid=65&author=12AX7]Larger charge ... |
2-11-2012 at 19:51
by: 12AX7 |
Help with crystals of boric acid - challenge
Seems to me a fluffy, flaky texture is typical. Don't think I ever got crystals that big (unless it ... |
1-11-2012 at 18:27
by: 12AX7 |
Preparation of elemental phosphorus
Larger charges are better ran with coarser reactants, is this the case here as well?
The boria wi ... |
1-11-2012 at 18:26
by: 12AX7 |
Have I been exposed to beryllium?
[rquote=263809&tid=21992&author=Random]
I also inhaled a lot of mold's spores by accident.
... |
28-10-2012 at 15:41
by: 12AX7 |
New Synthesis for Monomethyl (or higher) Amide?
Hmm, methoxides are methoxylating agents, not methylating. OCl simply isn't a leaving group, and th ... |
28-10-2012 at 15:32
by: 12AX7 |
Tired of reporting spam
Do crawlers and bots produce views? I would think so? Whether they can see anything at all depends ... |
28-10-2012 at 10:07
by: 12AX7 |
News Story: Gasoline From Air
Hmm, it was posted under Whimsy:
http://www.sciencemadness.org/talk/viewthread.php?tid=21858
of co ... |
26-10-2012 at 17:46
by: 12AX7 |
Nickel or rhodium?
Hard plated nickel is actually pretty hard, but I'm betting rhodium is harder. See what scratches o ... |
25-10-2012 at 21:10
by: 12AX7 |
Seismologists Were Found Guilty of Manslaughter
Ahem, the Pope is infallible only in matters of Church business. If he decrees that all priests mus ... |
23-10-2012 at 15:24
by: 12AX7 |
nickel carbonyl, hard to make?
[rquote=152118&tid=12184&author=benzylchloride1]Avoid leakage of nickel carbonyl into the ro ... |
19-10-2012 at 15:26
by: 12AX7 |
Sodium!
What's "considerably viscous"? My experience with molten salt has been a very watery consistency. ... |
18-10-2012 at 15:45
by: 12AX7 |
Accelerating Alpha decay with high voltage potentials.
Note that applying a static field to cold matter won't do very much: electrons are far more easily d ... |
18-10-2012 at 15:43
by: 12AX7 |
hypochlorite solution with crystals in it
[rquote=262690&tid=21841&author=Cloner]
I used sulfuric acid and commercial bleach (basical ... |
18-10-2012 at 15:35
by: 12AX7 |
Geiger Counter
If you want cheap, you could always take this route,
http://www.goldmine-elec-products.com/products ... |
17-10-2012 at 16:16
by: 12AX7 |
metal nodules / crystals by electrolysis
Thiourea is another common additive, at least for copper. It probably works with nickel too. A few ... |
17-10-2012 at 16:11
by: 12AX7 |
Concentrating acids with P4O10
Namely, H3PO4 is not volatile; at worst it dehydrates to polymeric HPO3 or something like that. Not ... |
17-10-2012 at 16:07
by: 12AX7 |
Metal-metal solvation
Mg is usually melted under inert cover: molten salts (which double as a flux), N2 (cheap), Ar (why b ... |
17-10-2012 at 16:02
by: 12AX7 |
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