Applied Chemistry

I was wondering wether or not what I believe to be the explanation for pH is correct; In pure water there is 2 H atoms with a total mass of 2. Coupled with teh mass of 14 it becomes 14/2 or 7 a neutral pH.

Hi, I've been looking for some small experiments to do to occupy my time while I wait until I have enough money to afford the distillation set I want to do more interesting things. While browsing around online I came across bubble solutions and realized there's quite a bit involved. Bubble artist Keith Johnson has a pretty basic page about the construction of bubble mixes located http://homepage.mac.com/keithmjohnson/soapbubbler.com/page2/page8/page8.html. He also has a page listing a lot of patents involving bubble mixes at http://homepage.mac.com/keithmjohnson/soapbubbler.com/page16/page17/page17.html. I'm curious what could be changed around to improve upon …

Appealing Products, INC started selling this rapid formaldehyde test swab that can used on solid food. I tried searching for how it works or even just the msds, I couldn't find anything. Does anybody know how it works or what's in the swabs? Is it the same as the old test kits for liquids (10036 EM Quant® Formaldehyde Test Kit) which uses purpald reagent? Thanks in advance!

I am confused! would you like tell me which one?

According to the WHO recommendations for drinking water safety http://www.who.int/water_sanitation_health/dwq/guidelines/en/ it says under residual chlorine that to achieve a log2 reduction in bacteria you need "Ct99 = 0.04–0.08 min·mg/l; 5 °C; pH 6-7)" By my understanding at 0.5mg/l (normal tap water) you would need less than 1 tenth of a minute contact (0.5 x 0.1 = 0.05). That can't be right, it would make tap water an effective disinfectant within minutes, can anyone explain why?

Here's an explanation for how a simple battery works: I just don't understand why the electrons find it easier to combine with the hydrogen on the carbon rod. The electrons are orbiting the hydrogen atoms on the zinc rod. Why would they want to move?

How can alcohol be removed from an alcohol-containing drink (such as Hard-liquor, beer or wine) in a way that the drink will become alcohol-free? The drink must: Remain safe, but it’s no problem if it becomes undrinkable because of taste, smell or becomes a solid. Method should be: Using chemical reaction(s) which would be adding one or more substances to the drink. If suggesting a compound: Include the name of each substance used. How the substances were made into the compound. You must also: Include the chemical reactions which will take place once the substance(s) are added to the drink. …

So, #1 I'm not a student or a child or close, I'm creeping up very close to 40. That said, I enjoy casting my own lead bullets, and loading my own cartridges, hence the screen name. So it's always bugged me I still have to rely on a vendor to obtain primers..... got to looking and well that mercury fulminate doesn't look to complicated to make, and I already have azeotropic HNO3, and a few ml of Hg, and who doesn't have a little 95% ethanol hanging around the liqueur cabinet right? So I took 10ml of the azeotropic HNO3 and added approximately 1ml of Hg, I say approximate because the disposable pipette I was using was not wanting to keep the heavy mercury in it once the va…

what is magnetostriction and magnetoresistance where we apply this phenomenon

Standard enthalpy of formation: Species Enthalpy (kJ/Mol) Br(g) 111.9 Br2 (l) 0 Br2 (g) 30.9 What is the standard enthalpy of vaporization of bromine? What is the energy neede for the reaction Br2 (g) ---> 2Br (g), i.e. the Br -Br bond energy?

Dear readers I have more of a question than anything else and I was wondering if anyone could help with it. Can an assortment of chemicals mixed create a magnetic or electric charge? if so what types of chemicals would be used in such a process?

Hi all, I’ve recently been watching a lot of Nile red’s videos on YouTube and it’s inspired me to synthesise something of my own. In short, if possible, I’d like to make some shoe soles out of old plastic or clothing or anything that can easily be broken down and re-polymerised into shoe soles really aha. I have a (very) vague idea of how the method could work, the problem is I can’t find anything specific on how to perform something like this on a small scale; I can only find information on the brief processes large recycling companies use. Does anyone know how I could go about doing this? Or of any websites that could help? Any replies would be gre…

I'm currently researching food coloring additives and their dangers. I've come across a couple that seem like there's no concrete evidence for just how dangerous they are, but we should still be scared of them anyway. I'm not the one for fearmongers, only facts. So, I would appreciate it if anyone came to my rescue and told me what they knew about popular color additives and even ones we don't use anymore.

Attila Csige R&D Engineer Apr. 18. 2014 4025 Linus Way, Carmichael, CA 95608 916-265-3653 Cell: 916-340-4814 Email: mc2inv@gmail.com Dear Sir/Madam. I am looking for two materials, first of all, I would like to know, under what name can I find them in the US and where can I purchase them. These two materials are being used to produce rammed graphite mold and for making carbon brush for electric motors. These materials are the follows: 1./ Coal tar pitch, binding pitch/impregnation pitch/bituminous pitch. This is essentially finely ground bitumen…

Hi, I know that chemical reaction is one in which original substances change their properties. Can we say that a rotten milk or a floating ice is an example of a chemical reaction? Somebody please guide me. Zulfi,

Is that true, in the same group, their oxidization ion (polyatomic ion) have the same valence like nitrate - and arsenate -?

diffusion-coefficient.docA solutionof pH1.2 was made from 2g sodium chloride (NaCl), 3.2g pepsin (800 – 2500iu mg-1)and 7ml 37wt% hydrochloric acid (HCl) was made up to 1000ml in DI water. where Fi is Faraday ‘s constant, T is the temperature in Kelvin, R a gas constant, zi is the charge number on the species, D is the diffusion coefficient, Ci is the moistureconcentration and κ is the ionic conductivity. Theconductivity of the solution was 2.4*10-4 Ω-1m-1. I wouldlike to know how to calculate the Cl ion, Na ion, H ion diffusion coefficient?

Does anyone know of any reactions that are not possible, at any conditions, without a catalyst?

This is not my field of expertise, obviously... I believe boron phosphate dissolves in water ; would it cause the bubbles in soapy water to harden ? Or what would you do to harden bubbles ? Miguel feparetz

Hello everyone, first day first post on topic "alternative/cheap" platinum like catalyst catalyst ostwald process to produce nitric acid or to oxidize ammonia gas to nitrogen dioxide for making nitric acid. Platinum groups metal are so expensive, among them platinum is one of the most cheapest to buy, but other catalytic metals are more expensive then it. I simply want to produce nitric acid by ostwald process but i don't have enough money to buy platinum, even if I had i wouldn't buy it. I am searching and looking for a cheap-easily available material to used as catalyst. I have read some articles and learnt from internet that I can also use pure hot copper or it's …

Now i've read that if you stick yeast in apple juice and let it ferment it creates an alcoholic drink(not that tasty but works). I started doing this and im just wondering if it actually works.

Anyone know any simple way of extracting alkoids from organic material

when rubber is extracted from wood, in which for is it, and what is it called ??

Hi All, I am trying to employ FT-IR (ATR) for comparing the real composition against the theoretical composition of a copolymer series. I have synthesized the homopolymers of monomers X and Z and then the copolymers at different theoretical composition (5, 10, 25 and 50 mol% of monomer Z) of both monomers. Then I got the spectra of all samples employing the ATR technique and identified the following peaks: - (1461cm-1) present in all samples/spectra's, which I have used as an internal reference. - (985cm-1) present in spectra of homopolymer X and the copolymers. I have assigned it as a characteristic peak from the monomer X. - (1104cm-1) present in spectra of homopolym…

Hi everyone! For a school project I want to use the next reduction reaction in a galvanic cell. O2 (g) + 2 H2O(l) + 4 e- --> 4 OH- (aq) (+0,40 V) But I don't know how to construct the half cell where this reaction occurs. Please, can somebody help me!