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Silver Polish Mechanics
A metal plate of magnesium was also sold to help with the electrolytic reduction of silver tarnish, ... |
15-10-2004 at 21:31
by: Mr. Wizard |
Substance that Melts at Room Temperature?
Try sodium thiosulfate, although it doesn't melt at room temperature, but it will crystalize at ... |
8-10-2004 at 06:05
by: Mr. Wizard |
Homemade Plastics?
Is "Ricin Oil" the same as Castor Oil, the oil extracted from Castor Beans and used as a ... |
6-10-2004 at 14:18
by: Mr. Wizard |
chemistry word problem
A calorie will raise one gram of water one degree C. So if you have 225 grams it will take 225 calor ... |
29-9-2004 at 19:25
by: Mr. Wizard |
atmospheric combustion of Al (foil)
I didn't mean to actually "burn" the Al foil with Mercury, it just forms an amalgam a ... |
28-9-2004 at 21:14
by: Mr. Wizard |
atmospheric combustion of Al (foil)
One side of the foil is rather dull, and may have a PE coating. It was also hard to get a good conne ... |
28-9-2004 at 11:03
by: Mr. Wizard |
atmospheric combustion of Al (foil)
What doesn't work. I tried to get Al foil to burn in pure O2 at atmospheric pressure and all I ... |
27-9-2004 at 16:55
by: Mr. Wizard |
atmospheric combustion of Al (foil)
Old flash bulbs contained aluminum wire, sometimes with an ignitor or some other material, surrounde ... |
26-9-2004 at 08:15
by: Mr. Wizard |
Homemade Plastics?
Here is an old one, Rayon. This site describes two ways of making it. The cupro-ammonium method can ... |
26-9-2004 at 07:48
by: Mr. Wizard |
Carbon Disulfide Preparation
Black Copper sulfide, which should form with Copper Sulphate is very insoluble. Would this solution ... |
24-9-2004 at 07:17
by: Mr. Wizard |
Carbon Disulfide Preparation
You will be the center of attention on the day you make the Carbon Disulfide and H2S! :-))!! Only a ... |
23-9-2004 at 07:19
by: Mr. Wizard |
Solvent explosions, exaggerated danger.
You are an accident waiting to happen. You don't have to have the whole volume between the LEL ... |
15-9-2004 at 19:02
by: Mr. Wizard |
Ferromagnetic elements and compounds
Whoops, you are right paramagnet not ferromagnetic for Oxygen. Sometime I see what I want to see. |
31-8-2004 at 16:14
by: Mr. Wizard |
Ferromagnetic elements and compounds
Oxygen gas and liquid is ferromagnetic. I haven't tried it, but there was a web site demonstrat ... |
31-8-2004 at 10:34
by: Mr. Wizard |
Silver "does not arc"
Any conductor will arc under the right circumstances. The advantage to silver is the contacts don� ... |
29-8-2004 at 12:09
by: Mr. Wizard |
Zn from US pennies
Melting the zinc carries a small amount of dissolved copper with the liquid zinc. It will only be ... |
24-8-2004 at 12:21
by: Mr. Wizard |
Mechanics and Physicochemistry of Nuclear Weaponry
Plenty of details here:
http://nuclearweaponarchive.org/
The secret to being a bore is not to le ... |
10-7-2004 at 07:51
by: Mr. Wizard |
Best and worst smelling chemicals?
I can't smell ammonia anymore. My sense of smell is otherwise very good. A couple of intense ex ... |
4-7-2004 at 20:36
by: Mr. Wizard |
Copper Chloride as a solution
Why not print a suspension of some basic copper salt, such as the carbonate, the hydroxide, azurite ... |
2-7-2004 at 07:01
by: Mr. Wizard |
Powder resulting from electroerosion.
If the precipitate reacts with water (bubbles) it may be aluminum carbide making methane (not acetyl ... |
28-6-2004 at 07:18
by: Mr. Wizard |
Powder resulting from electroerosion.
This sounds like EDM (electro-discharge machining?). The black could be aluminum dust with surface ... |
26-6-2004 at 12:10
by: Mr. Wizard |
Simple substitute for NiCr wire in DIY heat sources.
Don't be too surprised if the hot plate works for a few minutes and then quits. Your math on th ... |
23-6-2004 at 06:42
by: Mr. Wizard |
Zn from US pennies
I haven't tried the direct sulfur in petrol ( gasoline?), but it would have advantages if it wo ... |
22-6-2004 at 06:45
by: Mr. Wizard |
Zn from US pennies
I have removed the copper from zinc US pennies by soaking them in a solution of ' Lime-Sulfur ... |
21-6-2004 at 07:29
by: Mr. Wizard |
ethanol from potassium acetate
Why try to get blood from a turnip? Why not start with sugar and yeast like everyone else does? Joki ... |
12-6-2004 at 16:51
by: Mr. Wizard |
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