Applied Chemistry

i want to know how to extract Magnesium from plants... We have known that a high amount of Magnesium is present in such a plant called _______________. I am waiting for good replies immediately...

How to mathematically determine an equivalence point or end point or inflection point, for a Conductivity titration, when starting with data for conductivity and salinity (g of NaCl=titrant)..... sigmoidal curve......

I don't know if this was on a previous post, but I tried to make chlorine by electrolyzing saturated salt solution. I used an inverted test tube full of water over where chlorine is produced and it naturally displaced the water. The air in the test tube wasn't greenish, but I knew it had to do with chlorine because it had a chlorine smell when I pulled the test tube out of the solution. Was I making chlorine or an oxygen/ hydrogen compund with chlorine? If it wasn't pure chlorine, how can I change my setup to make pure chlorine? Thanks

Some reactions, where there is adequately large volume of reactants (number of moles, meant), doesn't need stirring, although they are viscous enough to prevent density currents/flows.

I just recently noticed a post on a forum board that covers DIY topics for people that live the self sufficient lifestyle that many of our great-grandfathers lived over 100 years ago ( I love to tinker with old ways as a hobby). It was on the subject of white wash paint, and the chemical make-up of it. I found it rather interesting, and thought provoking as well. As I went back into the main page for the forum sub-topics, I noticed one on Oxygen Absorbers. Now I know what some of you may be thinking, and yes...they did not use these things back then. The topic was for making DIY oxygen absorbers to add to stored grains and other perishable staples in sealed jars, buc…

Hi, First post, hello all! I have a question I'm struggling to find an answer to. I'd like to take Sea Salt and remove the Sodium Chloride, leaving behind pretty much the remaining mineral profile of sea water (the NaCl can be sacrificial as I have no interest in that). Is there a fairly safe (procedurally) way to do that with chemicals? I was told that a Downs cell would do it, so went to read up on that, which all looked great until I saw that it uses 30,000 Amps! (no thanks). I tried mixing it with a silver solution which made what looked like a white emulsion, and when it settled there was matter in the bottom of the test tube but I don't know what I'm starin…

Hi. Looking for the glossiest finish spray paint can; buying several brands and trying/comparing would be the only way to judge them; but there is a place that fills spray cans with the paint of customer's choice. What compound determines gloss, in order to ask for extra of that when filling ? -No clear coats later-

Problem: Drilling in London and high pressure Nitrogen gas pockets are hit killing two workers due to lack of ventilation. Background and proposed theory: Underneath London in the 1940s the water table was lowered underneath an impermeable layer of clay. This created a vacuum in certain areas Due to the vacuum the water cavitated Air came out of the water and formed above the water and below the clay. Iron present in the clay oxidised causing the removal of Oxygen in this air and resulted in Nitrogen rich air Water table increased (due to less demand officially) and resulted in the Nitrogen under high pressure. Question: Does this theory make sense to scien…

folks, what's up? simple questions posted, numerous views, no answers. i found this site and figured i'd have a bunch of intelligent people who would read my questions, and answer them. turns out this site is full of wannabe intellectuals. fshegg3

I have an interview on Monday to work as a production assistant for a major pharmaceuticals manufacturer. What should I learn on the weekend to impress the president of this company? I have no formal knowledge of chemistry and really I am a chem nub as I have been saving all my learning in this department for school. I know book stuff like Organic 101 and Bio 100.5 :/ what lab type stuff should I blast through to at the very least look like I have some potential?

Why do atoms disobeying octet rule still stable ??

Straight to the point. Based on a current project, I need to develop a Specification to determine Total Selenium in yeast by use of Flame Atomic Absorption Spectrometry (AAnalyst 200 Perkin Elmer, Hollow Cathode Lamp). Unfortunately, I can not make use of a microwave digestion. Therefore, I need to develop a method for Se yeast, which contains most of its Se as selenomethionine, by use of HNO3/HCl on a hot surface (water bath). I have to figure out basic conditions, like concentration, ratio, time, temperature, etc. This means any assistance of someone who has experience in a related area would be very helpful. I also need general advice for best AAS handling (Stand…

Just wondering if there are any other pyrochemz out there.... if there are... lets start a thread... on pyrochem only... btw just wonderin what is the easiest flash to make,... like with the easiest ingredients to obtain... post lots chill out and have fun

People, Wondering if the term thermal expansion coificcient is correct for evaluating the effectiveness/efficiency of different chemical compounds that are used in ac applications. Is this term correct? For example, such a table would make clear that R12s more effieient (colder) that R134a, ceritus paribus.. I am searching for a table that compared different - mostly organic compounds (yes, including R12, R134a. propane, butane, etc ) For that matter, even inorganics like ammonia, CO2, etc etc etc. Thanks!

I was wondering if anyone would be able to explain to me how exactly the 'm' & 'n' exponents in the rate law equation work(s), because they just seem to slip my understanding.. or if not, if you would be able to provide a link of some description to a video etc which can explain them in a simple and elegant fashion, that would be much appreciated, thanks.

What is the most hygroscopic material in an ordinary household ?

I was wondering how you determine the number of neutrons in an atom

I was wondering if anyone could give me a good way to easily remember the groups of the table of elements, such as metals, alkali metals and so forth. or more so, why they are called what they are.. and/or what correlation their properties have with their name and how/ways to remember them etc and also, why stable atoms are willing to give away electrons...

A rather alarming piece concerning the use of methyl iodide as a pesticide on strawberries recently came to my attention. My first reaction was to think, "How terrible! I eat 'conventional' (not 'organic') strawberries: am I going to be ingesting this carcinogen?" But then it occurred to me that such alarms often get raised on an unsound basis. So I figured that, before I accept the claims made in this piece, I might seek comment from those who know something about the chemical in question. Here is an extract from the piece in question (from Credo Action). Does anyone know anything bearing on the reliability of its claims? Edited to add: I also found an article u…

Hello. I'm an independent jeweler living in the Detroit area. I would like to know where I can obtain some Potassium Cyanide for gilding and buffing. Can anyone tell me where to get some?

Theoretically and practically speaking. Would there be danger involved in heating air inside a balloon, to say 200°C or more, and then inhaling the expanded contents? I'm referring only to harmful substences leaking from the rubber/whatever else party balloons are made of.

what is the best solvent/acid/base for dissolving the plastic found in dolls? i want to do a video of a certain annoying canadian 'singer' metion no names dissolving. but seeing as dissolving the actual person is unlawful, the next best thing is to use heavy chemicals and a plastic doll

Hello! I am interested in using an Aerobie Aeropress to filter alcohol infusions, and I'm wondering if the materials used will be safe to run alcohol through. Please read below for the official email I received from Aerobie: "With regard to your question about alcohol and the AeroPress coffee maker, we don't know. All the materials used in the manufacture of the AeroPress are what is called FDA grade for use in contact with food. I suppose alcohol is a food. For your information, the AeroPress chamber and plunger are made of copolyester, the hard black parts are made of polypropylene, and the soft seal is a made of a thermoplastic elastomer.…

I want to make a multilayer coating on Si-wafer using RF magnetron sputtering. My targets will be Cu, Al, Ti (in sequence from the top) and my machine capability is only one target per sputtering process. So i assume a problem will arise on aluminum layer because i'm certainly sure that the oxide layer will instantly formed as soon as i open the chamber to change the target for the next layer. I do some study and found that the oxide layer is strongly bonded and have a porous structure. My first idea is to put a negative bias and back-sputter the Al film before proceeding to Cu layer. But i don't know how much energy should the Ions (Ar+) have to clean out the oxide layer…

I am a new sculptor. live in Pakistan. trying to make sculpting wax/oil based clay. using following ingredients. calcium carbonate. micro crystalline wax. Motor oil. plain grease. brblem is that the clay came out of this process is brittle and having no elasticity. Help me in this... it would be a life saving. This kind of clay is not available in my city. jawaid