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Metathesis reactions
After something crystallizes, there’s always some of it left in solution (unless it was boiled to ... |
29-3-2005 at 14:07
by: neutrino |
Alcohol Burner Experiments
I was looking at a picture of it and it looked pink. Pink, pale violet, close enough. |
29-3-2005 at 03:16
by: neutrino |
Bismuth Crystals, etc.
I’ve recently been playing with nucleation using small pieces of Bi and found them to work decentl ... |
28-3-2005 at 20:26
by: neutrino |
heat loss b/w flask and plate
The difference shouldn't exceed 30*C, although it very well could. If you’re distilling under ... |
28-3-2005 at 20:04
by: neutrino |
Test tubes vs. Culture tubes
No, it doesn’t say anything about the wall thicknesses. The beaded rim is insignificant. Actually, ... |
28-3-2005 at 17:51
by: neutrino |
Test tubes vs. Culture tubes
I’m looking at a company’s catalog and want to get some test/culture tubes for reactions and for ... |
28-3-2005 at 16:12
by: neutrino |
Alcohol Burner Experiments
Flame tests are simple to do at home: make a solution of a salt, dip a q-tip in it and hold this in ... |
28-3-2005 at 12:49
by: neutrino |
Purification of ammonium nitrate fertilizer
RS, i.e. the [url=http://www.roguesci.org/]Explosives and Weapons[/url] forum. |
28-3-2005 at 12:35
by: neutrino |
Purification of ammonium nitrate fertilizer
I can guarantee you that RS has at least one long thread on this. Search there. |
28-3-2005 at 03:29
by: neutrino |
condensers
I’ve always seen a graham as the kind with vapor going through the coil. If you save coolant going ... |
28-3-2005 at 03:28
by: neutrino |
heat loss b/w flask and plate
It’s not that the temperature difference will automatically be 30*C, it’s that it shouldn’t ex ... |
28-3-2005 at 03:26
by: neutrino |
Hydrogen peroxide penetrability
Please make your posts a little more clear. I don't quite understand the point of that last one ... |
27-3-2005 at 06:19
by: neutrino |
Chemical 'hacking' of self-destructing DVDs
Do those machines which are designed to remove scratches from CDs work by actually polishing off a l ... |
26-3-2005 at 16:20
by: neutrino |
The Encyclopedia of Bioprocess Technology
Doesn't Argentina have public libraries? |
26-3-2005 at 14:34
by: neutrino |
The Encyclopedia of Bioprocess Technology
There's always the library. |
26-3-2005 at 13:05
by: neutrino |
Hydrogen peroxide penetrability
Why do you want to add oxygen to the blood? Whatever the reason, hydrogen peroxide is definitely not ... |
26-3-2005 at 10:51
by: neutrino |
Bismuth Crystals, etc.
Sorry, HNO3, glass doesn’t work. If I use glass, the crystals come out malformed. Immediately arou ... |
25-3-2005 at 07:34
by: neutrino |
Bismuth Crystals, etc.
Hg also alloys with many metals, but iron is a notable exception. There has to be some equivalent he ... |
24-3-2005 at 19:33
by: neutrino |
Bismuth Crystals, etc.
I tell the approximate purity by the color of the crystals. Nice pure ones will be bright purple and ... |
24-3-2005 at 15:01
by: neutrino |
Bismuth Crystals, etc.
It seems that working with my Bi steadily contaminates it. It must be dissolving my tweezers and ste ... |
24-3-2005 at 13:07
by: neutrino |
Copper oxides removing...
HCl in the absence of air should work well. Cold sulfuric acid would probably also work, but make su ... |
23-3-2005 at 15:07
by: neutrino |
Glassware Questions
I wouldn’t go with cheap glass, as it’s usually comprised of a lot of oxides (like sodium and ca ... |
22-3-2005 at 18:46
by: neutrino |
Bismuth Crystals, etc.
I’ve been working on the sticking problem and finally found a solution. Add a small amount of oil ... |
21-3-2005 at 17:54
by: neutrino |
HNO3 from NaNO2!
2H<sup>+</sup> + 2 NO<sub>2</sub><sup>-</sup> -> H<sub> ... |
20-3-2005 at 12:04
by: neutrino |
distillation practice
Not all hotplates have auto-shutoff features. I’m pretty sure mine doesn’t, I’ve had spots of ... |
20-3-2005 at 05:45
by: neutrino |
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