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Bad days in the lab or with glassware?
Lucky those rags didn't also catch fire!
I've had sulfuric acid residue decompose rags (paper tow ... |
5-9-2013 at 11:03
by: 12AX7 |
Presence of traces iron oxide minerals in limestone
Pyrite in shale and slate comes to mind; I don't recall that pyrite is very common in limestone, but ... |
5-9-2013 at 10:55
by: 12AX7 |
Arsenic from Skutterudite
I don't have phase diagrams for most arsenides, but the phosphides and antimonides that I do have se ... |
5-9-2013 at 10:46
by: 12AX7 |
Arsenic from Skutterudite
Fascinating; As dissolves in sulfuric acid, reducing some of the acid to SO2? Looks like a great yi ... |
4-9-2013 at 11:35
by: 12AX7 |
RepRap, Lawrence Welk, and Bubbles, oh my!
A spray or sinter technique might be good to construct things like motor windings. There ought to b ... |
24-8-2013 at 21:43
by: 12AX7 |
Producing high % CO
Funny, years ago when I operated a metal melting furnace in the backyard, I once had a good fire goi ... |
23-8-2013 at 22:32
by: 12AX7 |
Is "nascent hydrogen" actually a free radical?
If you talk about pure gas phase, HCl reacting with an Fe(0) crystal surface, plenty of complicated ... |
8-8-2013 at 21:21
by: 12AX7 |
Conversion of potassium dichromate to ammonium dichromate
[rquote=294572&tid=25439&author=blogfast25]
@12AX7: the link I brought up higher up is one ... |
3-8-2013 at 21:30
by: 12AX7 |
Conversion of potassium dichromate to ammonium dichromate
As for synthesis, I find simply cooking chrome oxide with a chlorate suffices. Base is unnecessary, ... |
2-8-2013 at 21:14
by: 12AX7 |
Copper Cathode Electrolysis
Good bet you've confused the anode and cathode. And your electrolyte is probably all kinds of nasty ... |
1-8-2013 at 20:12
by: 12AX7 |
Conversion of potassium dichromate to ammonium dichromate
Outside chance the K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> - (N ... |
1-8-2013 at 19:55
by: 12AX7 |
Building the Periodic Table
Very nice! |
29-7-2013 at 19:37
by: 12AX7 |
Perchloric acid and bismuth
It's not Bi(ClO4)3. The article mentions that it is easily prepared.
Don't suppose this reaction ... |
28-7-2013 at 07:39
by: 12AX7 |
Mercury Exposure from Older Brother's Mysterious Dust
[rquote=293519&tid=24994&author=bfesser]I can't say that I've seen this "peculiar yellow-gre ... |
24-7-2013 at 21:52
by: 12AX7 |
Making metal powders
Zinc oxide is yellow when hot, white when cool (thermochromic). This can also be seen over molten a ... |
24-7-2013 at 21:51
by: 12AX7 |
Melting Magnesium
[rquote=293549&tid=25278&author=bfesser][img]http://www.sciencemadness.org/scipics/_warn.png ... |
24-7-2013 at 21:36
by: 12AX7 |
Mercury Exposure from Older Brother's Mysterious Dust
Pffbt, I have something better for you to be paranoid about :
I've seen vintage electrical chassis ... |
23-7-2013 at 19:54
by: 12AX7 |
Making metal powders
CuZn doesn't really have a weak phase, as far as I know. Beta brass is white, hard, not very ductil ... |
23-7-2013 at 19:33
by: 12AX7 |
Melting Magnesium
NaCl-KCl eutectic (around equal parts by weight) is pretty close, and some CaCl2 added to that (not ... |
23-7-2013 at 19:04
by: 12AX7 |
A few unconventional uses for polyethylene tubing
PE will be much more stiff than latex rubber, making it better for vacuum; in Organic lab, that alwa ... |
13-7-2013 at 13:50
by: 12AX7 |
Manganese Thermite with Lime
*Cough*, Mn3O4 is the hottest by mole because its moles are bigger. Try dividing those by the mixtur ... |
13-7-2013 at 13:48
by: 12AX7 |
Ceramic resistor material?
Perhaps efflorescence from a calcium based cement? |
13-7-2013 at 13:34
by: 12AX7 |
Is it possible to produce calcium metal?
Apparently MgCl2 is rather corrosive as well; I recall reading someone was designing an electrolysis ... |
7-7-2013 at 07:28
by: 12AX7 |
Ceramic resistor material?
[rquote=290794&tid=24906&author=bfesser][rquote=290781&tid=24906&author=12AX7]lime o ... |
7-7-2013 at 07:25
by: 12AX7 |
Is it possible to produce calcium metal?
I don't see ionic chlorides making AlCl3; it's too covalent to be favorable, and the reaction rate a ... |
4-7-2013 at 13:02
by: 12AX7 |
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