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Measuring Electronegativity
As far as I remember, Pauling originally used arithmetic mean value, not gemetrical one (as in your ... |
14-12-2010 at 14:01
by: kmno4 |
manganese carbonate from spent zink carbon batteries
[rquote=193410&tid=14941&author=Aqua_Fortis_100%]Doktor Klawonn , nice writeup. This is very ... |
12-12-2010 at 11:56
by: kmno4 |
A Grave Risk of Death
[rquote=194684&tid=15031&author=Polverone]It is unfortunately a familiar story: [url=http:// ... |
12-12-2010 at 07:50
by: kmno4 |
Chemistry Help!
[rquote=194772&tid=15038&author=Misr]The concentration of water,solid substances and precipa ... |
11-12-2010 at 07:23
by: kmno4 |
Lime green solution...
[rquote=193622&tid=14911&author=blogfast25]
After cooling the frit showed a yellow tinge at ... |
30-11-2010 at 15:34
by: kmno4 |
Copper Chloride question
Brown colour is caused by charge transfer between Cu(I) and Cu(II), it is known for a long time.
So ... |
28-11-2010 at 17:03
by: kmno4 |
Lime green solution...
"The CrO5 test is not easily performed here. CrO5 (actually, CrO(O2)2, the diperoxo complex of hexav ... |
26-11-2010 at 09:18
by: kmno4 |
Where can I go with my degree?
Where can I go with my degree ?
- in this context = What shall I do with myself ?
It depends on yo ... |
26-11-2010 at 08:58
by: kmno4 |
Lime green solution...
Fe does not have to be the only metal present in this solution.
It also does not explain why soluti ... |
25-11-2010 at 10:49
by: kmno4 |
Lime green solution...
Yes, but one must remember that tested solutions should be acidic if you want to get reliable result ... |
25-11-2010 at 00:55
by: kmno4 |
Lime green solution...
[rquote=193176&tid=14911&author=DougTheMapper]It's probably iron. I have obtained similar re ... |
24-11-2010 at 21:59
by: kmno4 |
Lime green solution...
I think that the green something could be some (probably chloride) complex of Cr(III).
Such comple ... |
24-11-2010 at 11:22
by: kmno4 |
Lime green solution...
Take sol.1 and make it acidic with HNO3, next add H2O2, boil it - any changes ?
Take sol.1 make it ... |
24-11-2010 at 09:02
by: kmno4 |
solvated electrons
This literature can be helpful:
[b]Methylamine-assisted solubilization of lithium and sodium metals ... |
21-11-2010 at 11:43
by: kmno4 |
DIY magnetic stirrer
As I wrote earlier - electromagnets are the most important part of such a stirrer 
Without proper ... |
17-11-2010 at 12:58
by: kmno4 |
DIY magnetic stirrer
This circuit is rather simple: 2 X D latch and 4 NAND gates working in transmission mode and 4 ones ... |
16-11-2010 at 13:44
by: kmno4 |
DIY magnetic stirrer
[rquote=191174&tid=3056&author=neelin]Do you have a drive electronics schematic?
[/rquote]
... |
11-11-2010 at 03:36
by: kmno4 |
Electrolyte Conductivity
[rquote=190883&tid=14718&author=ChemNub]
5% H2SO4 was reading at about 4.5k ohms (! yes 400 ... |
25-10-2010 at 08:05
by: kmno4 |
Electrolyte Conductivity
[rquote=191028&tid=14718&author=merrlin]Electrolyte conductivity measurements can be made us ... |
23-10-2010 at 16:03
by: kmno4 |
DIY magnetic stirrer
[rquote=190668&tid=3056&author=labfix]I'm wondering why you didn't take the opportunity to b ... |
19-10-2010 at 03:39
by: kmno4 |
Cu/SiO2 a cheap versatil hydrogenation catalyst?
There is very similar catalyst being in use in chemical industry.
It is CuO promoted with Fe/Cr (pa ... |
14-10-2010 at 13:57
by: kmno4 |
Antifoaming agents
In a factory we use polyethers as antifoam agent.
Namely it is Pluronic xxx (I do not remember digi ... |
12-10-2010 at 12:13
by: kmno4 |
Willgerodt rxn: Styrene monomer -> phenylacetamide
I forgot to report results here
The best solvent for crystallisation seems to be mixture 50/50 w ... |
12-10-2010 at 01:34
by: kmno4 |
FREE Online Journals
It looks like all (or almost all) [b]RSC journals[/b] form period 1997-2007 are freely available.
h ... |
12-10-2010 at 01:11
by: kmno4 |
Ethanol water system at Superatmospheric Pressures
15 minutes of googling gave this:
http://www.hyper-tvt.ethz.ch/distillation-azeotrope-pressure_swin ... |
26-9-2010 at 12:13
by: kmno4 |
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