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Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 36,345
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
64 136,541
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/...
Jan9-14 11:09 AM
physyapps
113 126,310
I am trying to make some Potassium Chlorate (KClO3) by reacting bleach (NaOCl) with Potassium Chloride (KCl). I got...
Aug3-07 02:14 AM
Cesium
130 28,067
Does anyone know if confectionary sugar, is the same thing as regular sugar (ie. sucrose C12H11O11)? What about the...
Jan21-05 01:19 AM
archie
5 4,381
Does anyone know if it is possible use a soil pH meter to measure the pH of liquids (ie. not soil)? Or a better way...
Feb15-05 09:50 PM
mrjeffy321
2 1,690
is Corn Starch the same thing, chemically, as normal starch (C6H10O5)?
Mar15-05 09:39 AM
GCT
2 2,304
Is there an easy way to make/extract Sulfur (/Sulphur)? For example, making sulfur by taking the sulfur out of...
Aug20-05 10:50 PM
mrjeffy321
25 7,909
I have/had a solution of Iron (III) Chloride. I wanted to extract the Iron Chloride out of solution, so I decided to...
Jun27-05 02:47 AM
seattle_rust
1 5,592
Without getting into too much detail on what I am building, here is what I am basically asking, Will Soidum Hydroxide...
Aug26-05 07:32 PM
mrjeffy321
1 3,596
For a project I am working on, I need a container that is both highly corrosion resistant and strong (able to...
Sep18-05 03:06 PM
mrjeffy321
10 6,557
I have two Spectroscopy questions from a "lab" I need to answer. From what I know, Mercury doesnt just emmit...
Sep21-05 06:52 PM
Gokul43201
4 2,058
I am already known around here for my Iron Oxide , well…how about Copper Oxide too. I am making Copper (II) Oxide...
Dec9-05 01:12 AM
mrjeffy321
3 7,238
The other day I was at the store looking at some metal wall plates for light switches, they had all sorts of different...
May10-06 04:51 PM
Cesium
2 13,122
Hi, I would appreciate help to understand in the following question, how shall I take in account of 0.500M of HBr...
Mar3-10 08:24 PM
mrm0607
0 1,194
I know that I'm told that the heaviest elements can only be created in massive supernovae. Is this just theory, or...
Jan7-10 03:34 PM
sigmavirus
6 1,738
I have always been amazed at how well gasoline and highly purified alcohols are at cleaning things. It almost seems...
Jan6-10 07:09 AM
Lazy
2 3,068
I decided to make my annual fireworks watching a little more educational this year. ...
Jul10-11 01:07 PM
MrPennywhistl
0 1,295
I was looking at my periodic table in Chemistry today and noticed that Chlorine's relative mass was 35.5, how can it...
Oct18-08 03:04 AM
Borek
4 2,151
Am I wrong in thinking that the rf radiation used in nmr is not "absorbed" by protons to cause transitions between...
May9-13 10:43 AM
Ygggdrasil
4 818
I'm mainly concerned with Pluronic F-127. I want to know it's molecular weight. On one source, it says that the...
Apr16-11 10:19 AM
Nemus
1 896
If you had a solution of the following zinc benzalkonium chloride glycerin hydroxyethylcellulose purified water...
Sep26-11 02:44 PM
mrwhitee
9 2,414
From what I gather both ionic and covalent bonds transform all the elements involved into ions. Does that mean every...
Jan21-07 07:29 PM
GCT
3 4,020
Not everybody has access to Sodium hydroxide lye and not everyone can afford brewing barrels and all the other ****...
Feb7-07 09:31 AM
chemisttree
5 4,822
Im reading about covalent bonds and I read that Molecular or true formula can fully identify ionic bonding compouds...
Feb4-07 12:52 PM
Gokul43201
1 1,981
When you pour some acetone on the ground and it evaporates does it leave any residue at all or does it vanish without...
Jul2-07 05:12 PM
Mr_Bojingles
4 14,387
I want to learn how to isolate chemicals from substances. For example lets say I have a pile of powder which consists...
Jul9-07 10:55 PM
JGM_14
2 4,838
I can't understand how both the atomic weight of one atom of an element and the weight in grams of a mole of that...
Jul21-07 10:19 AM
Gokul43201
5 2,542
I'm planning on studying chemistry in university next year and although I know a good bit of inorganic and organic...
Jul14-07 01:38 AM
Mr_Bojingles
11 3,193
I was reading about washing non polar soluble chemicals with a polar solvent like water. How exactly is that done? If...
Jul20-07 09:11 PM
Moonbear
13 9,465
Is it possible to synthesize adrenaline in the lab?
Oct4-07 11:53 AM
Remnant
7 4,147
Does a salt always have an ionic bond in it regardless of whether it's constituents are covalently bonded or not? When...
Mar3-08 08:17 AM
lightarrow
2 11,136
I understand the basics of acid base reactions but I don't understand how you determine which compounds in a mixture...
Apr14-08 01:10 PM
Mr_Bojingles
0 4,696
I am to arrange the following atoms or ions in order of increasing radius...then give an explanation for the position...
Apr25-09 07:59 PM
SuperChem
3 3,177
I have a question for my chemistry course that has me confused. It reads... Discuss the idea that the standard of...
Jul4-06 06:53 PM
gravenewworld
7 5,218
I conducted an expereiment where I added 5.5g of NaOH into 200ml of 1.0 mol/l of HCl. Ive done all the calculations...
Jul10-05 04:33 PM
LeonhardEuler
2 2,917
I'm supposed to do a little demonstration to some middle school kids and one thing thats planned is sticking a balloon...
Jun24-10 09:19 PM
MLSmateo
2 1,068
what determines what order the atoms in a formula are written? for example, why is it CO2 and not O2C? It...
Sep4-10 03:07 PM
Borek
1 1,119
Sorry this is a really basic question but I'm studying for a chemistry exam which spans about 4-5 chapters and I don't...
Nov30-10 01:44 PM
Mu naught
2 1,516
I found this one interesting & easy; www.ploysiam-gems.blogspot.com comments welcomed.
Apr28-08 12:17 PM
mubashirmansoor
2 1,518
Hello, I am a student of gemology and just can't find a good explanation for the new "Glass Filling" treatment on...
May4-08 01:14 PM
mubashirmansoor
4 3,442
Hello, I am looking for a technique to separate the sediments (Greywacke) which have been deposited on & in some...
Jan19-09 10:08 AM
mubashirmansoor
0 1,474
Hello, I am interested to know if Nitric acid, or any other oxidizing acid (if so which one) is able to react with...
Feb18-09 12:03 PM
mubashirmansoor
0 2,225

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