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COVID-19 heat resistance ?
[rquote=634618&tid=155230&author=Tsjerk]
Typical is 120 degrees Celsius for 20 minutes. T ... |
23-4-2020 at 16:17
by: CharlieA |
Retort & Stand Questions
You can put a cheap aquarium pump in a bucket of water to cool a condenser. If you need the condense ... |
23-4-2020 at 15:52
by: CharlieA |
Was shipped wrong item, got a bottle of glucose instead of choline chloride. Anything cool I can do with glucose?
[rquote=634287&tid=155189&author=Texium (zts16)]Wow, sucrose, that's about as disappointing ... |
19-4-2020 at 17:02
by: CharlieA |
Why have different colour lids?
A general storage code, attributed to J. T. Baker chemical company, uses different colors to indicat ... |
7-4-2020 at 16:29
by: CharlieA |
KClO3 cell continuous production
[rquote=631481&tid=153836&author=Antiswat]sodium chromate is not hexavalent chromium, ...[/r ... |
23-3-2020 at 17:22
by: CharlieA |
SO2 from S8 and H2SO4
I'm ignorant of Mn chemistry. However I have several questions which I don't think that some of the ... |
23-3-2020 at 15:48
by: CharlieA |
Influenza 1918
Thanks for the link. Unfortunately, that plague took by maternal grandmother when my mother was only ... |
18-3-2020 at 15:44
by: CharlieA |
Need ideas for experiments and chemistry project
[rquote=632703&tid=155031&author=maqce][rquote=632680&tid=155031&author=CharlieA]The ... |
16-3-2020 at 17:58
by: CharlieA |
Need ideas for experiments and chemistry project
The laboratory manuals for chemistry courses are good sources of experiments with a purpose and teac ... |
15-3-2020 at 17:22
by: CharlieA |
Reaction skill tree
How can one answer such an ambibuous question? |
12-3-2020 at 17:04
by: CharlieA |
Dosposing Oil Containing Nitromethane
Is it possible to test your usual procedure with a small portion (say, a couple of milliliters)? It ... |
12-3-2020 at 17:02
by: CharlieA |
Report on attempt to make cerium iodide
Just out of curiosity, in your original post, you refer to "reading online'". Do you have references ... |
8-3-2020 at 17:40
by: CharlieA |
Easy to obtain standards for titrations and other analytical methods
[rquote=631951&tid=154954&author=Sulaiman][rquote=631884&tid=154954&author=CharlieA] ... |
2-3-2020 at 17:27
by: CharlieA |
Easy to obtain standards for titrations and other analytical methods
If you use a burette with 0.1 mL divisions, use more than 10 mL of titrant and interpolate between t ... |
29-2-2020 at 19:19
by: CharlieA |
Waiting for acceptance...
Well, good for you! I wish you all the best luck in the world. If I weren't (almost) 80, I might eve ... |
14-2-2020 at 18:31
by: CharlieA |
Everyday Chemistry
quote: So it looks like your math is as good as the starting numbers were!
What do you know! App ... |
13-2-2020 at 18:18
by: CharlieA |
Everyday Chemistry
Do you know the purities of your starting materials? My calculations (always iffy), show that 4 mols ... |
12-2-2020 at 18:00
by: CharlieA |
Strontium nitrate from strontium carbonate
In the supplement to his "Illustrated Guide to Home Chemistry Experiments," Robert Bruce Thompson (a ... |
10-2-2020 at 18:22
by: CharlieA |
Calibration Weights Classification for Balances
You really only need one very accurate (standard) weight (I know, mass, but I'm an old fart); then ... |
9-2-2020 at 18:09
by: CharlieA |
Best materials for chemical work surfaces?
My lab surface is made with porcelain kitchen/bath tiles. I used a regular tile adhesive, and a sili ... |
8-2-2020 at 16:38
by: CharlieA |
Hydrochloric acid separation
I would not expect the detergent to be very volatile; especially to affect the outcome of the "2-po ... |
11-1-2020 at 16:24
by: CharlieA |
Idea from making salicylic acid from aspirin pills, extract with hot water, not acetone.
I followed the procedure in the supplement to Robert Bruce Thompson's "Illustrated Guide to Home Che ... |
9-1-2020 at 19:17
by: CharlieA |
The Short Questions Thread (4)
Did you use pills that may have contained a red dye? Perhaps the dye was adsorbed on the crystals. Y ... |
9-1-2020 at 18:46
by: CharlieA |
2019 Secret Santa
Looks like a small scale reaction vessel. The large size joint would make cleaning a mess of gunk ou ... |
1-1-2020 at 17:01
by: CharlieA |
Golden rain experiment ruined . Did not recrystallise out on cooling
Do you mean that you dissolved lead acetate in nitric acid to produce a solution of lead nitrate?
W ... |
31-12-2019 at 18:05
by: CharlieA |
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