Applied Chemistry

Is Gun metal the material of choice for ordinances ? Please advise.

As a thought experiment, I imagine having a full cup of water sealed with plastic saran wrap. I think that if I turned it upside down in a shallow puddle of water in a petri dish and slipped off the saran wrap, then the water would probably come out of the glass causing the petri dish to overflow. So how much water do I need for the atmospheric pressure to be enough to keep the water in the glass.

I know you can buy it as fertiizer, but i looked and coulnd find any fertilizer with KNO3 in it. Im prolly not looking for the right kind of fertilizer. Can you show me a site where they have fertilizer with a considerable amountof KNO3 in it please? I just want to be able to go to the garden store or hardware store and buy it so coulde you tell me the best way to get it without ordering offline.

is there a any chance about mix lime with a fertilizer to reduce the acidity of it ????

I am a mother and my 2 boys are now in high school. I do not have a formal background in science. I have a background in Co-creative science, introduced to me in 1992 by Machaelle Wright (books - Behaving As If The God In All Life Mattered, Co-creative Science, MAP, and Microbial Balancing Program) . Again, sometime in the early 90's I was introduced to a man talking about a product that I think I can make. I have been re-introduced to him in 2011 and I can't get it out of my mind. It has to do with gold and silver. When either gold or silver is dissolved and heated in certain ways, it produces an element that has superconductive properties. The man who discovered t…

Hey guys. I am thinking of creating something relating to batteries (sorry, no specifics!), but since I have not yet formally taken chemistry or any electrical classes, this is, understandably, problematic. Don't get me wrong though, I'm not going into this blindly. I have taken AP Bio, so I have a good understanding of the periodic table, the elements, valence electrons, redox reactions, electronegativity, Endergonic vs. Exergonic, etc, etc. I have been trying lately to get a good understanding of how batteries work, but there are still a few things that confuse me. Here's what I know so far: A battery consists of an anode (negative I think, like ANion, but the chart…

PSA powerpoint slide. If the grounded cube has a side length of 10 micrometres then it would have a surface area of 60 micrometres^2. Which is equivalent to 60 x10^-12 metres^2. To calculate the amount of particles I did 60 x10^-12/ 6x10^-4 (the original size of the MgO cube.) which came out to be 10^6 particles. For the overall surface area I did the S.A of one particle x by the overall amount of particles so 60x10^-12 x 10^6 = 0.00006 metres^2. This is the first time I have done this calculation so I don't feel confident in challenging my lecturers note calculations. But, they are different and I cannot see why? Any suggestions? ps. if you can't read the photo. it…

I work for a company that supplies Nitrogen to vendors. I've had to learn a lot about Nitrogen vs. Oxygen because of this. We also supply reimbursement for tire damage for some of our dealers as well. This year I've had a few people tell me that they experienced a blow out shortly after (about a week or two) after having a deflating tire topped off with oxygen. We receive a lot of claims, so I can only imagine the ones I didn't talk to personally. Is there something about potential damage to a tire and adding oxygen to nitrogen that makes this a volatile environment that would cause a blow-out? If so, can you explain? If not, is there something else that could explain thi…

Pouring some ClNa on ice is a practice to melt ice. As is done on pavements. Pouring some ClNa on ice is a practice to lower the ice temperature and prevents melting of ice. As done on keeping fish mixed with ice for its transportation or storage. Well, it is one, the other or... both. Promotes melting; prevents melting ? Explain please ?

I know that this is a very advanced question, but this was asked in my Chemistry II class today, and the teacher said that he did not know the answer, nor had he ever thought of the question. And so I was curious and wanted to ask this question to someone who knows chemistry and about protons and electrons better than I. If electrons have a smaller mass than the proton, than how do they have the same charge? I do know this, that charge is related to the quarks, and that up quarks have +2/3 charge, and down quarks have -1/3 charge. If an electron has -1 charge, than they would have to contain 3 down quarks. The proton has two up quarks and one down quark. Both have…

Hello everyone. I have a dream to get smarter and do not intent to quit on it. I want try to raise consciousness in people today. NZT is the compound I intent to make. Any help is welcomed thanks (thallanylzirconio-methyl-tetrahydro-triazatriphenylene) More info at <url removed by moderator>

Now Ive managed to find pharmaceutical industry firm job, they told me first of all it will be 1 month trial. I dont know what kind of laboratory work that i will do or learn. But I have to know which things that I should pay attention to it in 1 month trial work period. What are the work tasks and working environment in pharma labs? Which things can I learn before entering to that job? I need help from pharmaceutical industry chemists or technicians. What are the hardest part of them? What are the lab. equipments and analyse or process tasks of pharma laboratories? Im not good at using my hands in the jobs which needs flexible in manual dexterity. What a…

Ok what kind of environment do I have to create for the reaction to take place? I'm turning an old propane tank into a reaction chamber and to achieve the temperatures required for reaction I will run a DC current through the material. Will filling the chamber with argon be sufficient or does it need to be a vacuum chamber? If so how much of a vacuum is necessary? Disclaimer: Do not try to replicate any of the conditions I just described unless you have experience with high pressures and electricity. Failure to take certain precautions could result in death or permanent injury to you or others. Contrary to iron man having shrapnel in your chest isn't a good thing.

I recently read a report on the subject of using this as a dough conditioner in the commercial bakery industry. The article says that this additive is produced by dissolving feathers in an acid solution and then separating it. Most of this product is imported from China (about 90%) The article goes on to say that the Chinese use human hair to produce this product. Has anyone ever heard of this, it sounds kind of grouse? This product is said to also be made synthetically, but is more expensive to produce. Jewish Religion will only allow baked products using none of this product or synthetically made product in kosher baked goods. You people work with chemicals all the ti…

As is well known diamond which is an allotrope of carbon has been engineered in the lab. Has this been achieved in the lab with other allotropes of carbon like graphite and charcoal? Does nanotechnology or molecular engineering offer any solutions?

Hi. A glue in its container, stays useable until applied, has no exposure to air or whatever makes it 'hard'. Closing the container after use, keeps it useable for still a long time. If the application is between two surfaces, were the glue is confined to similar 'air tight' conditions as it was in the container, it usually hardens as supposed to. What differs in both conditions, inside the container and inside joined impermeable parts ?

I received a treasure trove of glassware from a chem professor friend who found them in the dumpster of the chem building on his way out from work. Most of the stuff I recognize, but there are a few pieces that I've never seen and can't find on google and that even he doesn't know what they are. I'm hoping someone here can help. Here's the first piece. It's stuck to the top of a Vigreux column. Does anyone know what it's called and what its purpose is?

I am trying to eletrochemically reduce CO2 into HCOO-/HCOOH at a rotating Sn cathode. I used a 1M KOH anolyte and CH3OH with a lil bit of water(as a proton donor) catholyte. I also added in KCl to improve conductivity. Did preelectrolysis and bubbled N2 into the catholyte for an hour plus minus. Did a pretty good job at reducing graph noise and ghost peaks. Then I pumped in CO2 for another hour. I used a pretty low flowrate though, as the electrolyte will spit out if I set it any higher. The bubble size and flowrate are not unlike the ones produced in a fish tank The Sn cathode I used is Sn plated on glassy carbon. The quality is pretty bad as I only deposited it…

what causes the tube to glow during the cathode ray experiment. please explain How

why does the e/m ratio of protons changes from gas to gas

Does hydrogen formed by electrolysis have a specific isotopic signature? With other words; does hydrogen undergo isotopic fractionation during the process?

How would one go about doing this?

The LOD is defined as the minimum concentration of an analyte required, wherein the analytical signal is significantly different from the blank signal (background signal). Am I right in this: The lower LOD-value, the higher analyte concentration. In an AAS study of the mass of calcium carbonate in potsherds (first dissolving the sherds in concentrated nitric acid, then measuring an absorbance-value, calculating a concentration for calcium --> mCaCO3(s) is obtained), what use is it to know what the minimum concentration of calcium is, wherein the analytical signal is significantly different from the blank signal? If this cannot be answered, what use is it in gen…

Are impressive; looking for a formula to prepare such, the web shows to boil reduce corn syrup. Seems too simple. Anyone knows how to prepare it ? Seen fly trap ribbons formulas, with weaker glue based on honey/sugar. Stolen from somewhere... "Mix 1 qt. corn syrup mix and 1 qt. water in a pan. Bring the mixture to a boil. This will create a non drying sticky paste." Does the boil changes the chemical stickyness or just concentrates it by reducing ? If only concentrates it, why add water to start ?

My mother is taking an antihistamine preparation containing Ketotifen. I am trying to determine how many milligrams of Ketotifen are contained in each milliliter of the preparation. Here is a pic of the package, showing the concentrations: Using the Ketotifen Fumarate concentration of 0.035%, my calculations say there are 3.5 milligrams in each milliliter of the preparation. Can someone verify this, or give me the correct level? I know this is pretty basic, sorry for that, but it's been a long time since I studied chemistry! This is related to a serious health matter, so if someone could check this for me, I sure would appreciate it! TIA Dan