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Preserving crystals of FeCl2*4H2O
I happened to stuble on this thread by chance. Recently I had a strong solution of iron, sulphate, c ... |
29-10-2007 at 11:03
by: DerAlte |
Question about thermodynamics
Ttry CaCl2 - it gets a bit lower that NaCl, IIRC. Der Alte |
29-10-2007 at 00:26
by: DerAlte |
Question about thermodynamics
You need a phase diagram to see this clearly. Sorry, I haven't got one for the NaCl/H20 system. Read ... |
28-10-2007 at 19:27
by: DerAlte |
(Somewhat) Unusual Fracional Crystallizations
@ Xenoid
NaCl.2H2O might be completely unknown to today's amateurs but the old chemists in the 18 ... |
27-10-2007 at 12:28
by: DerAlte |
(Somewhat) Unusual Fracional Crystallizations
I decided to put this in Miscellaneous because it’s Phys. Chem and also unlikely to interest those ... |
27-10-2007 at 09:50
by: DerAlte |
store bought solvents
Might be of interest:
http://www.iupac.org/publications/pac/1986/pdf/5811x1535.pdf
(re acetone ... |
26-10-2007 at 21:18
by: DerAlte |
PC PSU to laboratory PSU
@Twospoons
Read your reference and stand corrected! But, if you are going to use, say, a generic ... |
24-10-2007 at 21:58
by: DerAlte |
PC PSU to laboratory PSU
@Twospoons - re your post 22-10-2007:
[quote]Now thats just silly. SPICE only exists because mode ... |
23-10-2007 at 21:35
by: DerAlte |
PC PSU to laboratory PSU
If any of you are seriously considering making a constant current or a constant voltage regulated su ... |
23-10-2007 at 20:57
by: DerAlte |
PC PSU to laboratory PSU
There seems to be no excuse anymore for using that old battery charger!
With regard to electrolys ... |
21-10-2007 at 08:40
by: DerAlte |
adapting a domestic MW
@len1
Your radiation formula may give a realistic approximation. I assume it is derived from stan ... |
4-10-2007 at 20:56
by: DerAlte |
adapting a domestic MW
@chemrox
As indicated in the prior two posts, all holes do radiate but it they are small enough ( ... |
4-10-2007 at 16:15
by: DerAlte |
adapting a domestic MW
It is foolhardy to cut a hole of any size in a microwave oven. If the hole perimeter approaches a wa ... |
29-9-2007 at 09:55
by: DerAlte |
can someone dumb this down a little
The time has come to speak out. I detect the following in posts from Slmz:
(1) Spamming
(2) Ex ... |
25-9-2007 at 21:25
by: DerAlte |
Red P (higher yeild method)
Yawn - why do you even bother, Sauron?
[Edited on 22-9-2007 by DerAlte] |
21-9-2007 at 20:44
by: DerAlte |
atomic energy density of elements
Density depends entirely on the units used - for instance water has a density of 1000 kg/m^2 on the ... |
21-9-2007 at 20:35
by: DerAlte |
Permanganates
As usual, congratulations, Xenoid. You got the spiky crystals. The Japanese gentlemen have been vind ... |
18-9-2007 at 21:59
by: DerAlte |
Ba(NO3)2 - NaNO3 - eutektikum (temperature ?)
@Jamjar - Useful reference! Thanks, Der Alte |
16-9-2007 at 21:00
by: DerAlte |
Permanganates
@ Xenoid ….. a couple of tips, although you probaly know them.
Use colorimetric titration ... |
12-9-2007 at 10:43
by: DerAlte |
Permanganates
@ 12AX7 & cesium - second that. Titrate. Then you'll know how much MnO4- you have and how much K ... |
11-9-2007 at 21:56
by: DerAlte |
Permanganates
@ Cesium Fluoride
You said
[quote]I have a hunch that Ullmann's is closest to the truth as i ... |
11-9-2007 at 20:27
by: DerAlte |
Sodium!
Superb work, Len 1. A thread stopper!
Der Alte. |
11-9-2007 at 19:21
by: DerAlte |
Cyanide Insect Bait
One used to be able to get lead arsenate baits maybe you still can. Interesting compound, possible s ... |
11-9-2007 at 17:47
by: DerAlte |
Permanganates
@ S.C. Wack - the Victorian chemists nearly all say that a 'sensitive' test for Mn compounds is to h ... |
11-9-2007 at 17:38
by: DerAlte |
Permanganates
@ Xenoid - welcome back and hope your sojourn in the mountains has left you refreshed.
If I ever ... |
8-9-2007 at 21:39
by: DerAlte |
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