Chemistry

Reaction between NO and O3 is a luminescence reaction and it forms NO2 and O2 with light. Why light it produced in the reaction. Is it because of at the end electrons NO2 going down from a higher state ? If it yes , if we heat up NO2 will it make that glow again ?

Is it possible to Calculate how much of each chemical construct's the human body. what is the equation of chemicals that make humans? do chemicals = 100%?

Whats the best chemical repellent for bugs such as flies, ant's, slugs, woodlice and so forth. I know you can buy items such as ant repellents but are they the best and what would they comprise of? also, ive been told salt works but is it a multipurpose bug killer / repellent?

Oh yes made my hydrogen generator finally ! Collected a bag already. Its very easy to make, you can google about it, if you don't understand something you can ask me.

Anyone know good books about chemistry in the 18th & 19th centuries? I'd like to learn more about that so I can integrate it into my history classes.

Another thread made me think about bismuth. I spent some time researching the stuff and came up with a few facts that surprised me: bismuth is a metal but forms amazing cubic crystals bismuth has a low melting point, and can be crystallised at home using a stove-top bismuth, weirdly, is non-toxic, despite the fact it's next to polonium and lead bismuth is the largest atom which is (to normal extents and purposes) not radioactive bismuth expands upon freezing, just like water does bismuth is the most diamagnetic naturally occuring substance The last point on my list made me think about a demonstration i had seen involving a grape and a set of neodymium ma…

Greetings. I am a new member of this forum, and I joined specifically for assistance on the following topic. The company I work for is setting up a Tribology laboratory to test various metal working fluids. The required tests include an elemental breakdown to determine fluid additive levels as well as contaminants from dirt and wear metals. Standard test results offer levels (in PPM) of: Iron, Chromium, Nickel, Aluminum, Copper, Lead, Tin, Cadmium, Silver, Vanadium, Silicon, Sodium, Potassium, Titanium, Molybdenum, Antimony, Maganese, Lithium, Boron, Magnesium, Calcium, Barium, Phosphorous, and Zinc. The industry standard appears to be an ICP (Indu…

Hi guys I am looking for phase equilibria diagrams for methanol to help me calibrate my solvent recovery unit. If the pressure drops too low I will flash evaporate water too (which I don't want to). Any links will be greatly appreciated.

I have an aluminum water tank that had an algae inhibitor containing Copper Sulfate Pentahydrate added to the water. I am seeing a corrosion reaction - pitting with a white substance created on the surface of the aluminum. I've rinsed it and washed it, but haven't been able to stop the reaction. Is there anything that will neutralize this reaction, that won't in turn cause a different reaction with the aluminum? I now have an algaecide that won't react to aluminum, but I need to solve the old problem first. I'm finding Sodium Carbonate/Soda Ash or possibly Ammonia as solutions to neutralize the copper sulfate, but I also see that those products may cause trouble with my …

Iron is probably the only catalyst used in the Haber process, today. Why aren't any other transition metal catalysts used for this process? osmium and ruthenium aren't economically feasible, but what about other transition metal elements such as Nickel or Copper? Is there a specific reason why Iron is the most suitable catalyst for this process or is iron the cheapest substance that can be used for this process? Another fact to consider is; Iron is one of the chief components in nitrogenases, the group of enzymes used by particular biological organisms to convert dinitrogen into ammonia. Is it probable that the biological organisms use iron in their enzymes because ev…

Please, can anyone help with the names, structures, and origins of non-standard Nitrogenous bases (purines and pyrimidines)

Hi, I'm doing an expiriment to determine the average rate at which the hypochlorite concentration of bleach decreases with exposure to air. I am adding weak sulfuric acid and pottasium iodide to a known volume of diluted bleach, and then titrating with sodium thiosulfate (which I have previously standardised) untill a colour change occurs (having added starch indicator close to the end-point.) I now have the data of the number of moles of sodium thiosulfate required, but I am unsure how to calculate the number of moles of sodium hypochlorite in the sample. Could someone please give me the ratio of thiosulfates to hypochlorites, and the equation(s) to show the ratio? An…

what conclusions can be made from pH5 apart from that it is an acid? in terms of concentration and strength and moles? thanks

Well there is one thing that i dont get it on buffer solution... Lets say that we will make buffer solution from Na2HPO4 and KH2PO4. This salt will dissolve like this in water : Na2HPO4 => 2Na + HPO4 KH2PO4 => K + H2PO4 So our buffer solution is going on this equilibrium ; H2PO4 <=> H + HPO4 in that case , the pH of the solution is depends on H+ ions that forms in equilibrium. But ; doesnt HPO4 also dissolves like this in water ? HPO4 <=> H + PO4 shouldn't the pH also depends on the last equilibrium too ?

like synthetically recreate the reaction and and produce heat/electrical energy? if not a glucose reaction some other forum of chemical reaction? possible one doable with highschool level resources

there are plenty of substances that will expand upon contact with water, but are there any which contract/ shrink/ shrivel etc?

Would hypothetical intelligent creatures on a world with an extensive hydrogen atmosphere, no oxygen, these creatures would metabolize hydrogen and exhale methane, would these creatures be able to smelt iron, could a hydrogen atmosphere produce an energy source like an oxygen atmosphere does for us? I imagine such creatures forever stuck in the stone age with maybe a rudimentary use of native metals.

I have a Waters Alliance 2695 that I need to run IQ, OQ, and PQ on. Does anyone know where I can get a free copy of the parameters for this instrument?

Heard this years ago and always assumed it was true. Figured I'd find out wot's wot... That leaving tap water in a container overnight dispersed some of the chlorine.

Hello, I'm Vlad Andrei and i am an online entrepreneur from Bucharest/Romania. You can see some details about me here: Link removed I write here because i have a great idea and i would need to check with an expert in Organic Chemistry. If this idea is "real", we can develop a big business togheter. If you are interested you can send my an email or contact me at the number below: Personal information removed

Hi Everyone, Just a quick question. If you want to turn a vicinal dihalide into an aklyne, then why do you need 3 equivalence of NaNH2 instead of only 2 equivalence? Thank you in advance.

Is it safe to suck this gas in? I hear that it's supposed to make your voice deeper temporarily, now I really want to try it.

Do you know why the electrical conductivity for NaOH is greater than for KOH for different concentration in mass percent (range 0.5%--5%), but the electrical conductivity at infinite dilution of the K+ is quoted to be greater than for Na+? Someone has the theory this is due to ion pairing, but is not ion pairing in 1:1 electrolytes at low concentration an unimportant effect?

hello i have an iron wire that coated with copper . is there any way to extract copper from the wire fast? like electrolysis? i try 2 way: 1- putting the wire in hcl. its work but very slow. 2- electrolysis with a battery core in (-) and the wire in + .but both iron and copper was dissolved. how can i dissolve iron and keep copper!!?? electrolysis way is better if possible! thanks and sorry for bad english!

Tell me if this is sound logic. So if I pretty much wanted to create hydrogen gas to experiment with. I would need a battery setup running a conduit of negative and both positive. With two stainless steel or maybe platinum "electrodes".The electrodes will be both placed into water with either salt or acid. The hydrogen gas will be generated by the cathode. (negatively charged electrode) What are the conditions I would have too have available to store hydrogen gas? I can picture something like, very large test tubes hung upside down with 2 electrodes in place. This would be on the bottom with a workable drainage/airtight cork of some kind. Very slowly I could release t…