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Concentrating storebought 15% muriatic acid
Anhydrous CaCl2 can be obtained in hardware stores as drying agent for air drying purposes. You can ... |
22-3-2024 at 02:16
by: woelen |
Concentrating storebought 15% muriatic acid
You can concentrate it a little more to appr. 20% by careful boiling. Initially, mainly water boils ... |
21-3-2024 at 08:07
by: woelen |
Do i have Potassium Chromate?
Cr(OH)3 only dissolves in fairly strong solutions of NaOH. If you have a solution with a pH equal to ... |
21-3-2024 at 08:03
by: woelen |
Oxide layer on Copper
The presence of other metal ions and certain anions also can change the redox properties of copper ( ... |
15-3-2024 at 00:30
by: woelen |
Multiple bad experiences with AliExpress
My experiences with Amazon are quite good actually. But I must say, I only bought stuff from EU-base ... |
13-3-2024 at 00:44
by: woelen |
Experiment with algebraic integers
Actually, the points at 1, -0.5 + 0.5*sqrt(3) and -0.5 - 0.5*sqrt(3) have zero density if only irre ... |
27-2-2024 at 02:38
by: woelen |
Multiple bad experiences with AliExpress
Beware of these: https://www.fruugo.nl/ssd-solid-state-4tb-990-pro-m2-2280-ssd-pcie-40-nvme-gaming-i ... |
25-2-2024 at 13:06
by: woelen |
NO2 refusing to condense
The most likely problem of the OP is that the path between the place where NO2 is produced and where ... |
25-2-2024 at 12:50
by: woelen |
Experiment with algebraic integers
@Rainwater: I did not know 3blue1brown, but now that I have watched a few videos from him, I must sa ... |
25-2-2024 at 12:39
by: woelen |
Experiment with algebraic integers
@clearly_not_atara: The properties you give indeed are true, but things are even better.
Any monic ... |
23-2-2024 at 14:04
by: woelen |
Multiple bad experiences with AliExpress
Another bad experience from AliExpress. KI, which is mixed with something else. The "KI" I ordered i ... |
21-2-2024 at 13:43
by: woelen |
Experiment with algebraic integers
In the following three pictures I made heat plots of
1) All zeros of all reducible polynomials of d ... |
21-2-2024 at 13:29
by: woelen |
Laboratoriumdiscounter.nl ratings
Methylamine is not such a good reductor, actually, it's only weeakly reducing. Even dichromate is no ... |
15-2-2024 at 00:30
by: woelen |
How hazardous is fluorine chemistry?
I personally have done a few experiments with 48% HF, but I did not feel comfortable at all while wo ... |
14-2-2024 at 11:46
by: woelen |
Experiment with algebraic integers
I expect all of you know the concept of integer numbers (..., -3, -2, -1, 0, 1, 2, 3, 4, ....) and r ... |
6-2-2024 at 12:52
by: woelen |
Manganese cleanup and purplish smokes
It indeed is quite remarkable that H2O2 can act as a reductor, and also can act as an oxidizer. I th ... |
31-1-2024 at 00:40
by: woelen |
Preparation of Hydrogen Cyanide
Beautiful and very interesting set of experiments with the HCN. The experiment with the liquid evapo ... |
25-1-2024 at 00:41
by: woelen |
Preparation of Hydrogen Cyanide
Beautiful write-up.
Interesting to see that you can isolate such pure HCN from a an innocuous che ... |
23-1-2024 at 00:46
by: woelen |
Multiple bad experiences with AliExpress
With the fake As2S3, I now see that I am not the only one. Another person added a 1 star review, tel ... |
22-1-2024 at 03:02
by: woelen |
Multiple bad experiences with AliExpress
In the past, I purchased quite some things from eBay, but recently, the number of interesting items ... |
21-1-2024 at 10:21
by: woelen |
Nitric acid bottles growing exterior crystals?
It most likely is ammonium nitrate, or amine nitrates. If you have animals (pets!) around, then this ... |
21-1-2024 at 09:45
by: woelen |
Manganese Dioxide from Manganese Sulphate
Precipitate Mn(OH)2 from a solution of MnSO4 or Mn(NO3)2.
To this, you can add any oxidizer, which ... |
18-1-2024 at 00:50
by: woelen |
Can KBH4 substitute NaBH4 in ethanol/methanolic solutions for reduction of ketones to alcohol.
Mixing perchlorate and borohydride may be risky. In aqueous solution, I do not expect any issues, bu ... |
15-1-2024 at 00:37
by: woelen |
High Boiling Solvents for HCl Synthesis to Prevent Flask Cracking
Do you want to make dry HCl, or hydrochloric acid?
Standard sodium bisulfate, as you can buy for ... |
12-1-2024 at 02:24
by: woelen |
How strong is the effect of sodium ions really?
As suggested by Dr.Bob, moved thread to energetic materials section. |
11-1-2024 at 06:28
by: woelen |
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