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Chemicals Used for Illegal Purposes
Perhaps someone should write the thousand-volume-set called "Some chemicals used for legal purposes" ... |
10-4-2010 at 06:14
by: unionised |
High-temperature flames.
[rquote=175285&tid=13607&author=hissingnoise][quote]Why use liquid O3 when you can use the g ... |
10-4-2010 at 06:11
by: unionised |
Michelson Interferometer - do we need a beamsplitter?
For visible work you can use a piece of plain glass as a beam splitter so I presume that you could u ... |
10-4-2010 at 06:01
by: unionised |
Lead Safety Question
If much lead was being dissolved from the glasses they would be "frosted" and you would see this.
... |
10-4-2010 at 05:50
by: unionised |
High-temperature flames.
[rquote=175225&tid=13607&author=hissingnoise]Gah! Fuck Kelvin - why did he have to complicat ... |
9-4-2010 at 03:26
by: unionised |
A lot of acetonitrile.
That's odd. Normally drying solvents that form an azeotrope is easy, you just fractionate out the wa ... |
3-4-2010 at 02:21
by: unionised |
morpholene with epichlorohydrine
I'm guessing at a different transliteration of morpholine (and epichlorohydrin) from someone whose f ... |
2-4-2010 at 10:55
by: unionised |
A lot of acetonitrile.
IIRC you can break that azeotrope by saturating it with salt. It splits into two layers. The separat ... |
2-4-2010 at 10:48
by: unionised |
ammonium perrhenate reduction
Why worry about water?
The same reference I quoted says you can reduce just about any rhenium compo ... |
30-3-2010 at 10:00
by: unionised |
ammonium perrhenate reduction
Just a thought.
Here's a quote from Sidgwick's Chemical elements and their compounds;
"Rhenium co ... |
29-3-2010 at 12:12
by: unionised |
Making small amounts of liquid ammonia
Re Formatik's post
"Be careful with dry ice and low freezing solvents. They can easily cause severe ... |
28-3-2010 at 04:37
by: unionised |
pH Probe Computer Interface?
I'm told that the really cool thing to use as a buffer amplifier is the FP54.
The bias current is ... |
22-3-2010 at 12:25
by: unionised |
Pump not working correctly?
"The new oil went from a lovely pale yellow to a creamy white- What caused this?"
This
"Pumps wate ... |
22-3-2010 at 12:15
by: unionised |
Electrostatic and electrolysis
It would be a spectacularly inefficient way to do it but I guess it's possible in theory. |
18-3-2010 at 11:16
by: unionised |
Glass stopper broken off
There's every chance that trying to drill it will have the same effect as hitting it with a hammer a ... |
7-3-2010 at 11:49
by: unionised |
measuring concentrations of iron and manganese without spec.
If you know the iron concentration and it's not too big compared to the manganese then you can still ... |
7-3-2010 at 07:13
by: unionised |
Problem boiling down sulfuric acid
Most of the boiling chips I have seen were made from glass; bits of silica gel work too.
Incidental ... |
3-3-2010 at 11:07
by: unionised |
getting mercury salts out of vacuum glassware
Just for the record, I2/ KI solution also works.
Might be handy for those whose stocks of HNO3 are ... |
17-2-2010 at 12:42
by: unionised |
Endless Oil?
It seems that nobody has noticed that, if new technology improves extraction efficiency 4 fold then ... |
11-2-2010 at 11:04
by: unionised |
The Irish company Steorn builds a pulse motor with no back EMF.
Check the first video .
Their company logo says it all.
"Orbo, get real" |
10-2-2010 at 12:21
by: unionised |
Laser-Diode based Raman Spectroscopy
Just a thought, would a simple prism and slit do a good job of removing leftover IR from the 523nM b ... |
8-2-2010 at 12:12
by: unionised |
removing trace copper impurities from AgNO3
The easy way is just to recrystallise the AgNO3.
Unfortunately, it's very soluble, so you will get ... |
7-2-2010 at 06:33
by: unionised |
The science of cleaning coffee pots with lemon wedges, ice, and salt
I suspect the ice is there to act as "lumps of stuff" that bash the lemon/salt mixture against the w ... |
1-2-2010 at 13:45
by: unionised |
Silver purification
Melt it with sodium carbonate or treat it with zinc and dilute acid. |
28-1-2010 at 14:07
by: unionised |
Making sodium tellurite from tellurium dioxide?
Cu tellutite is, so I understand, insoluble. If you dissolve the bulk material in base you will leav ... |
18-1-2010 at 13:21
by: unionised |
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