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Jan16-12 Greg Bernhardt
chemistry, websites Sticky Thread Pinned: Good chemistry websites ( 1 2 3 ... Last)
I think that these links can be interesting: PeriodicTable: http://www.webelements.com/...
May7-14 10:06 PM
Awheezi
115 146,066
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
jackmell
64 154,017
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 40,815
Hi all, One of the orbitals of the d subshell is called d (x^2-y^2). What is the reason behind that? It would be...
Jun30-14 02:35 PM
Mike H
2 2,353
I am about to take a teacher certification test for HS Chemistry. I would love to get suggestions from you on the...
Jun26-14 02:11 AM
bacte2013
3 2,835
Can this photo synthesis be done by technical means or is it only happen in plants? Synthesis: 6CO2 + 6H2O(gas) +...
Jun26-14 01:12 AM
ovacs
11 2,491
Hi everyone, I've been reading articles and looking at many websites for methods to measure hydrogen peroxide residue...
Jun25-14 07:47 PM
Greg Bernhardt
1 2,310
Hey, this is not a homework question really but more a research issue my fellow students and I have run into. So...
Jun24-14 05:09 PM
sting10
4 2,184
Hi all, this question may sound incredibly obvious to a degree of trolling, but I was having difficulty finding an...
Jun24-14 01:14 AM
DrDu
5 2,257
When two substances have the same temperature, the particles have the same average kinetic energy, right? So why is it...
Jun23-14 04:01 AM
epenguin
4 2,355
Hi all, In osmosis a solvent moves across a semi-permeable membrane when the solvent is on both sides of the...
Jun23-14 03:18 AM
epenguin
2 2,388
what is the properties of chimcal reaction for carbon and sulfur in gunpowder......and what different reaction...
Jun22-14 04:38 AM
Borek
3 2,091
why do we make composites with graphene oxide not with graphene ? if there is a problem to do composite with graphene ?
Jun20-14 11:45 AM
Greg Bernhardt
1 2,262
I am trying to recrystallizing lidocaine out of methanol. I created a saturated solution of lidocaine and hot...
Jun18-14 07:26 AM
Mike H
2 2,013
Why not? if I had a solution of K+(aq) and Cl(-) and placed it within an electric field, my ions would separate to...
Jun17-14 10:14 AM
dbh
7 2,213
it is known that the standard combustion enthalpy of methane is -882 kJ/mol CH4 + 2 O2 --> CO2 + 2 H2O Hc =...
Jun17-14 09:55 AM
ossamawww
3 1,908
One of the answer explanations in practice book states "student 2 says that the solubility of carbon dioxide in water...
Jun14-14 03:29 PM
Bengo
2 2,069
i have attached 2 photos here... the book said the NH2 exhibit negative inductive effect (negative inductive...
Jun14-14 01:57 PM
DrClaude
3 1,916
All those physical objects: http://en.wikipedia.org/wiki/File:The_incomplete_circle_of_everything.svg /...
Jun13-14 04:24 AM
Borek
5 1,900
can I name the first compund as 1-amino-4-methylcyclohaeaxne? can i name the second compound as...
Jun10-14 07:35 AM
DrClaude
1 1,893
this website only shows 5 isomer for butene. which is 1-butene, 2-butene(cis and trans), 2-methylpropene, cyclobutane....
Jun10-14 07:05 AM
tadchem
5 1,737
Which are all the possible combinations of chemical elements that a common people can use for manufacture an...
Jun8-14 02:03 PM
Jhenrique
3 1,745
So I was trying to figure some random stuff out, trying to figure out something other than gasoline to supplement...
Jun7-14 03:38 PM
rbelli1
6 1,912
Let say that I have hydrogen gas and oxygen gas mix together, is there any chance that some H2 and O2 will react to...
Jun7-14 12:39 AM
HeavyMetal
5 1,918
We've just started learning about ψ in the quantum mechanics section of our atomic structure chapter. So while...
Jun6-14 01:54 AM
mfb
3 936
I'm developing an experiment where an exothermic reaction will evolve water as an unavoidable byproduct, and for...
Jun4-14 10:42 PM
russ_watters
2 629
Hey I am a physics student, and not so familiar with chemistry. I have a huge problem, because I have to find the...
Jun3-14 07:57 PM
Q_Goest
10 800
Why is the oxidation/decomposition of chewing gum blots stuck on pavements such a slow affair? Why do these blots...
Jun3-14 07:38 PM
256bits
1 660
Is carbon dioxide at relatively the same concentrations in China, America and Antarctica for example? Or (I'm not...
Jun3-14 04:31 PM
Borek
14 670
This might be a stupid question so forgive me if it is. Im looking for a way to make methane more useful as a fule and...
Jun2-14 08:30 AM
iwant2beoz
8 636
Could someone offer a pointer to whether I have the right thinking on this, please? The way I see it, the K2CO3...
Jun2-14 03:02 AM
Borek
9 721
Hi I have a small challenge. I need to etch aluminium oxide but not aluminum. Does anyone know if this is...
May30-14 09:45 AM
hilbert2
1 601
Is bio-fuel the answer for man's problems, or can we produce petro rather fighting over it?
May28-14 01:27 AM
Ivan Seeking
15 1,363
Might be a stupid question but gotta ask. The bonds of benzene have a bond dissociation energy in between that of a...
May27-14 03:30 AM
DrDu
7 853
Is it possible, and if so how, to obtain oxygen by breaking apart Carbon Dioxide or Sulphuric Acid?
May26-14 09:18 AM
adjacent
6 760
Do I need to worry about the pore size, or can I just assume that any/all paper filter will remove the organic...
May25-14 08:36 PM
kl055
6 675
Consider the usual primary halogenoalkane aqueous alkaline hydrolysis reaction RX + OH- --> ROH + X- We know...
May25-14 11:54 AM
Borek
3 603
why enthalpy of neutralisation of HF is greater than 68KJ. MY attempt Enthalpy of neutralisation= Enthalpy of...
May25-14 07:06 AM
theincrediblea
3 631
Are electrons negative to anything? Did we notice two different charges and decide to label them like we did with left...
May24-14 09:56 PM
jtbell
2 725
Hi, I'm looking for a good chemistry lab manual/book that discribes how the general lab equipment works (with pictures...
May24-14 12:18 PM
christian0710
3 609
what does coordination no in crystal structures really mean? i know it's no of nearest neighbors but has it...
May23-14 03:24 AM
DrDu
8 747
I read about a study that nitro fatty acids reduced blood pressure in mice and perhaps in humans. What is nitro fatty...
May21-14 03:19 PM
DrClaude
1 530
My organic chemistry textbook says that ethers generally have higher boiling points than alkanes because of...
May21-14 01:57 AM
Borek
2 560

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