| Search |
| [Next Page] |
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 |
How strong is the effect of sodium ions really?
Another option I have is making KClO3 from KCl, using MMO electrodes (I have done that in the past). ... |
10-1-2024 at 05:07
by: woelen |
How strong is the effect of sodium ions really?
I purchased a PbO2 anode and intend to make NaClO4 with these, by electrolysing a solution of NaClO3 ... |
10-1-2024 at 04:55
by: woelen |
Relative number of moles
This of course occurs much more. The simplest example is H2O2. It contains H : O = 1 : 1, but the mo ... |
8-1-2024 at 07:57
by: woelen |
Relative number of moles
[rquote=689072&tid=160014&author=Fulmen]Example: Al2O3 has a relative ratio of 1:1.5 but an ... |
8-1-2024 at 00:46
by: woelen |
Easy way to make phosphorus pentachloride with easy to get reagents
I agree with Bedlasky. I have ferrophosphorus and I have Cu3P (copper(I) phosphide). Both are quite ... |
8-1-2024 at 00:26
by: woelen |
Using transition metal mineral acid salts as complexing salts with alcohol or acetylene and ammonia as aliphatic amine catalysts
The term "ammine" stands for ammonia-complexes and from them it is not possible to make amines.
E ... |
4-1-2024 at 03:32
by: woelen |
Speed of C programs, relative to Java
@Rainwater: The data sets are not identical, but comparable. Actually, even between two runs on the ... |
31-12-2023 at 11:19
by: woelen |
Speed of C programs, relative to Java
For quartics, generating, solving 100M equations, and analysing the results:
- Java: 35 seconds
- ... |
29-12-2023 at 02:12
by: woelen |
Speed of C programs, relative to Java
It does make some difference.
In my quartic solver code it hardly matters, but that code only us ... |
27-12-2023 at 11:01
by: woelen |
Accurate solver of quartic equations.
I developed a solver for quartic equations (general 4th degree equations with 5 coefficients). I thi ... |
21-12-2023 at 10:45
by: woelen |
Do you need an FEL to produce energetics?
For me, the border is at where you make practically applicable explosives in larger quantities, such ... |
19-12-2023 at 00:14
by: woelen |
The Short Questions Thread (4)
I don't think so, or only with great difficulty. ThO2, like many other oxides, is quite inert if it ... |
15-12-2023 at 00:12
by: woelen |
Introduction
Welcome to the forums. I hope to see interesting contributions from you soon! |
14-12-2023 at 11:30
by: woelen |
Speed of C programs, relative to Java
For solving polynomial equations, the so-called companion matrix is used. This indeed is a sparse ma ... |
14-12-2023 at 05:27
by: woelen |
Speed of C programs, relative to Java
In Java there is no 128-bit IEEE754, at least not through standard code. There may be some software ... |
13-12-2023 at 12:10
by: woelen |
Speed of C programs, relative to Java
The software returns the roots. It is possible to detect multiple roots. One can compute guaranteed ... |
13-12-2023 at 06:17
by: woelen |
Speed of C programs, relative to Java
[rquote=689426&tid=160035&author=Keras]
Your pointer to the extended precision library is v ... |
13-12-2023 at 01:27
by: woelen |
Speed of C programs, relative to Java
I only timed the actual solving of the generated quartics and doing the analysis of the error. The t ... |
13-12-2023 at 01:02
by: woelen |
| [Next Page] |
