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Chromium Revisited
@blogfast
I would have treated the NaOH neutralized solution precipitates (or the redissolved sol ... |
17-12-2011 at 14:15
by: DerAlte |
Chromium Revisited
Carbonate complexes do exist - eg [i]Brauer[/i] cites Carbonatotetraamminecobalt(III) Sulfate [Co(NH ... |
16-12-2011 at 17:51
by: DerAlte |
Chromium Revisited
[b]Correction to Part 1 Above.[/b]
Der Alte wrote:
[quote] sodium carbonate solution produces a si ... |
16-12-2011 at 00:07
by: DerAlte |
Chromium Revisited
@ blogfast
I don't know at what temperature Cr(OH)3 begins to change to the oxide. Moderately hea ... |
13-12-2011 at 14:28
by: DerAlte |
Chromium Revisited
[b]Chromium Revisited – Part II[/b]
A bit more about Cr2O3 and Cr(OH)3:
In the first part of ... |
12-12-2011 at 22:09
by: DerAlte |
Lunacy Rules
For crass ignorance and stupidy on all sides read the following:
[quote]TULSA – Tulsa police ar ... |
10-12-2011 at 12:15
by: DerAlte |
Chromium Revisited
Thanks, woelen.
Although some may think this whimsy, Mea Maxima Culpa! I meant to post in Genera ... |
10-12-2011 at 09:46
by: DerAlte |
Chromium Revisited
[b]A stroll through the oxidation states and colors of Chromium. Pt1.[/b]
About 25 yrs. ago I did ... |
9-12-2011 at 21:42
by: DerAlte |
Green, A Scientific Prespective
There's a thread on this topic running now. Why not post there instead of littering the forum?
"( ... |
1-12-2011 at 20:14
by: DerAlte |
Help settle a dispute between educators on significant figures in compound operations
I get your drift, Stifle. But in the problem do not the two figures 30 and 350 suggest +/-5? Yet the ... |
12-11-2011 at 21:11
by: DerAlte |
Help settle a dispute between educators on significant figures in compound operations
"(its actually a kinematics physics problem)
335 = v + (9.81)(30)
solve for v, (units removed ... |
11-11-2011 at 22:44
by: DerAlte |
Samarium from SmCo5 Magnets
See my post http://www.sciencemadness.org/talk/viewthread.php?tid=8758&goto=search&pid=126 ... |
11-11-2011 at 22:11
by: DerAlte |
US Carcinogen list gets additions
In the above URL quoted by S.C. Wack, NIH reports that several compounds are "Reasonably anticipated ... |
9-11-2011 at 09:46
by: DerAlte |
What’s the average age?
@Rosco:
I guess Frank didn't record that one. Here's a version:
www.youtube.com/watch?v=yxwvOncHVb ... |
6-11-2011 at 15:01
by: DerAlte |
What’s the average age?
How many of these threads do we need ? asks Franklyn - good question. However, the sample availa ... |
5-11-2011 at 20:44
by: DerAlte |
Hydrogen Peroxide purification
[b]Freeze concentration of 3% H2O2[/b]
http://www.sciencemadness.org/scipics/H2OH2O2-solid-liquid-p ... |
28-10-2011 at 20:02
by: DerAlte |
The trouble with neodymium...
Re this thread, see also my earlier posts on RE metals Ce, Nd, Sm:
http://www.sciencemadness.org/ ... |
24-10-2011 at 21:51
by: DerAlte |
The Curious Case of the Cursory Chemical Cache
Slightly OT but in the same vein:
The WHO is alleged to be considering a treaty to 'ban' Mercury ... |
22-10-2011 at 13:27
by: DerAlte |
Smileys and avatars
FFS (English abbreviation) NO Smileys. Keep them for Farcebook, Twatter and other juvenile sites.
... |
20-10-2011 at 20:15
by: DerAlte |
What to do of my life? Answer faster!
Excuse - this is off topic; if this is a topic...
@blogfast25
[quote]Hey, Der Alte: lo ... |
18-10-2011 at 21:47
by: DerAlte |
What to do of my life? Answer faster!
Post all posts in Whimsey. No, on second thoughts, Polverone might not allow you in. Try posting dir ... |
18-10-2011 at 10:05
by: DerAlte |
Potassium from lithium in an organic solvent
Blogfast25 wrote:
[quote] Precisely what can reduce what depends enormously on circumstances: the r ... |
13-8-2010 at 17:54
by: DerAlte |
Permanganates
Thanks, Taoiseach , for your kind words.
In keeping with my philosophy of recycling crud and usin ... |
13-8-2010 at 17:38
by: DerAlte |
Permanganates
[b]Review of Manganates.[/b]
Many have tried to produce manganates without very satisfactory result ... |
3-8-2010 at 20:52
by: DerAlte |
Reagent Production by Electrolysis - a few ideas.
Excellent reference, Sedit. Has good detail on organic oxidation/reduction plus inorganic. a must re ... |
8-11-2009 at 08:36
by: DerAlte |
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