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Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
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chemistry, websites Sticky Thread Pinned: Good chemistry websites ( 1 2 3 ... Last)
I think that these links can be interesting: PeriodicTable:
Jan9-14 11:09 AM
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chemical, latex, typeset Sticky Thread Pinned: Chemical LaTeX typeset ( 1 2 3 ... Last)
Physicsforums now has a very cool feature, which enables complex typesetting for formulas or equations! A tutorial...
Jul7-13 04:53 PM
64 136,633
So I'm reading about asymmetric synthesis and read that a commonly used "asymmetric reagent" is this:...
Aug6-12 10:16 AM
1 641
Hi all, How can I excitation - ionization solid metal ??? May by radioactive material which is too soft.
Jun7-13 03:59 AM
2 641
I was reading this article from Wikipedia on resonance structures: ...
Dec29-13 11:47 PM
Simon Bridge
3 641
Is there a material or chemical substance that would have a visable change of any kind when exposed to THC? For...
Dec17-13 03:02 PM
3 642
hello! which is the impact of static magnetic field on the tertiary structure of organic molecules? which must...
Jun29-12 03:18 PM
0 643 The correct answer states its C which i understand why since doubling the intiial...
Jul24-12 12:30 PM
1 643
I've been learning cheistry for a very long time, and I often come across bits of knowledge that becomes permanently...
Oct23-13 04:30 AM
1 643
I have been asked to determine the Amp-Hour capacities of a competing battery technology that is not yet released. I'm...
Aug9-12 10:55 AM
1 644
Hello... I'm making elephant toothpaste for my chemistry project, where I'm using activated yeast+73 ml of water and...
Oct22-13 06:57 PM
2 644
hello, i have no bubbles in distillation of phenylacetone under vacuum, the heat is about 120c, and the vacuum pump...
Dec4-12 10:40 AM
1 645
In water ,due to attraction between water molecules and polar solute molecules the solute dissolves. But though alkyl...
Dec2-13 11:23 PM
1 645
starting with analine how do you attach a NO2 group para, so that NO2 does not get attached ortho? If you add...
Aug5-12 11:46 AM
0 646
Hello, I have a problem to understand properly this effect. I understand that during the process the change in the...
Jun13-13 10:17 AM
1 646
First one: is this an intramolecular photocycloaddition? ...
Dec17-13 10:18 AM
1 646
Okay this maybe a silly question but I had to ask. In school we are making standard solution to perform a...
Mar1-13 11:25 AM
2 647
in VBT we consider orbitals but orbitals were given by Schrodinger and his quantum mechanics. so we must also...
Sep4-13 01:04 PM
9 647
Dear forumers, I'm looking for the translation in ENGLISH for the following article : On the Dispersion Mechanism...
May31-13 02:03 AM
1 648
Are there any things that can be explained by valence bond theory, that cannot be explained by molecular orbital...
Nov18-13 04:48 PM
4 648
Would there be a stronger signal for alkene with a chlorine, bromine, hydrogen or flourine? I am thinking bromine...
Feb13-13 03:40 PM
0 649
I just came across the hydrolysis of the salts and the formula pH=7+1/2(pKa-pKb) What's bugging me about this is...
Dec21-13 03:43 AM
1 649
hi,a basic question, i added 20 ml of 1M Kno3 with 20 ml of 2 mM of Fe3CN6. will the concentration of the two...
Aug13-13 11:19 PM
2 650
The RSC Classic Chemistry Demos list the method for the hydrogen peroxide iodine clock variant as being buffered at...
Dec2-13 04:54 PM
6 651
I read in my Chemistry workbook that: "At higher temperatures, vapour pressure increases as more energy is provided...
Jan9-14 10:12 PM
9 651
Hello, How can I calculate the bond dissociation energy for K+Br- when I only know the the length of the bond?...
Oct5-12 02:51 PM
2 653
Looking to find out the amount of vacuum needed in inches Hg to remove partial pressure of a gas in a tank. Is...
Jul16-13 09:10 PM
0 653
Perhaps I have some mental block with basic algebra (so don't judge me on that), but... Here is a simple high-school...
Feb19-13 04:06 PM
2 654
I'm having some doubts about Ksp, solubility, Kb... 1) If a salt has a solubility of 1g/L, it means that a) there...
Sep26-12 02:16 AM
1 655
Hello, I am unsure of how to utilize protecting groups in organic synthesis problems. What would be an immediate...
Mar17-13 11:03 PM
4 655
Hello. I'm just wondering how many cubic feet of gaseous hydrogen are in one gallon of liquid hydrogen. I know I'm...
Feb20-13 12:39 PM
2 656
Is there a more common term for indicate the concept of depth of an absorption propose by Clark (I suppose)? "The...
Aug15-12 05:11 AM
0 657
Can someone explain why we take the number of particles into account after we have determined our molality? I feel...
Jun29-13 03:04 PM
4 657
Water solvent is usually considered and essential basis for any Life in the Universe. Recently other solvents have...
Sep17-13 04:02 AM
7 657
Hi all, I have a problem than I need to figure out. I have added 7ml ethanol to 3.2 gm leaf(any leaf) I...
Sep27-13 07:47 AM
Abhilash H N
3 657
As opposed to guess and checking by inspection. Is there a method mathematically like with an algorithm or something...
Feb26-13 02:08 AM
1 658
I was thinking of plating iron or magnesium on to copper with a galvanic cell. Would this work? 3Cu(s) + 2Fe2+(aq)...
Sep16-13 03:55 AM
2 658
I was reading an article about the electron orbitals of iron and copper: The electronic configuration of iron is 1s...
Oct4-13 10:12 AM
4 658
Can some one explain (to a non-chemist) what exactly is happening in the decomposition reactions ...
May31-13 02:47 AM
3 659
I want a small amount of benzene. Obviously it is not easily purchasable, but sodium benzoate is. I have heard one way...
Oct14-13 09:57 AM
3 659
Hello, If I get 2.0830 grams of tobacco and add 1 gram of barium hyrdoxide to it. Mix it in 100 mL of...
Oct24-12 02:24 AM
1 660
Hey folks, I'm trying to obtain the melting points of several materials in a vacuum. It's pretty...
Apr17-13 01:50 AM
1 660

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