Chemistry

paint thinner is used for degreasing and cleaning purpose in machineries and spare parts industries. Paint catalysts, driers and chemical coating are other application areas of paint thinners. Paint thinner chemicals are characterised with low moisture, purity as well as environment friendliness. Different varieties of paint thinners are used in agrochemicals, insecticides, textiles, printing, automotives and oil industries. Paint thinner can be used for paint thinning of oil based paints and paint brush cleaning. Special attention should be given in using paint thinning chemicals in a well ventilated space and taking safety precautions. Most common paint thinners include…

I am interested in testing a number of water samples from different sources and determining what chemicals/pollutants may be in the samples. Would I be able to do this with an IR spectrometer? I used one years ago as a biology major but it has been a long time. I think I could re-educate myself on their use.

Hi all, I want to reduce carbon dioxide into formic acid via electrolysis with a tin or carbon rotating cathode I plan to use glycerol carbon dioxide solution as my catholyte. But i looked online and found no-one uses glycerol, but methanol instead. Glycerol is a better solvent compared to methanol and it is also less toxic. So why don't we use glycerol? Is there something I'm not aware of?

So I was bored, and build a a ventilation hood during my vacation from work, using parts from an air conditioner. I built the container out of wood (b/c it was cheaper and faster), and I have to line the inside with a relativley cheap, and non-hazardous flame retardant material...any suggestions??? ~EE

How can I calculate the internal energy of a solution by knowing all of it's elements?..is this possibly? For example: If I have 2 liters of salting water [latex]\mathbf{NaCl_{(aq)}+H_2O_{(l)}}[/latex] contains 1.5 g of salt, how can I determine the internal energy stored in it?

Can I get a brief explanation or a brief list of the colors of the chemical compounds pls ? Tq so much!!

Hi I just bought my first condenser, its a Graham condenser. I did some simple distillation and It worked well. I just was wondering what is the best way to dry out the inner coil? Thanks.

I was contemplating majoring in chemistry when I go back to university. I don't want to do this physics (not that i don't like physics nor is it that i can't - just not interested in taking the classes). Thus, I would do a Bachelors of Arts instead of science to avoid the physics. I was thinking pharmacy school after this, or stopping with Bachelors. How does the difficulty change as one progresses through the major? General Chemistry (not a big fan; made good grade without studying much; easy at cc) Organic Chemistry (took, dropped; loved it) Physical Chemistry (not taken) Biochemistry (not taken) Analytical Chemistry (not taken) Inorganic Chemistry (not taken) Other…

Hello, I was wondering if there are any good books on general chemistry for students of a high school level. Thank You!

Hello Im new to "Chemisty" only thing that is diffent for me is that i never learner in "High School"! So i will need your help to help me learn so i get learn the basic and not feel lost when i go to a class!! Send me Link's for Youtube Vid bout Chemisty Blog's Good Website's Etcc....

Hello, I'm trying to build a contraption, and one of major elements, or obstacles I'm trying to solve (hopefully with your aid!) is the injection of extra electrons into the inner orbitals of some tungsten atoms (the orbital just below the full S orbital that hangs around in the electron sea-- the inner 5d orbital). So what would the the easiest way to pump a lot of extra electrons into my clump of tungsten atoms look like? I don't require the electrons stay there, but they do have to be taken into those orbitals at some point... The answer might be really simple, but my general understanding of how electrostatic electrons can be become internal electrons is limited..…

Heya, Stumbled upon an problem. We are trying to create nutrient broth with a range of concentrations of lead acetate in order to grow lead-tolerant bacteria. The problem is, when we add the lead acetate solution to the nutrient broth it immediately precipitates, it then reacts and changes from a white precipitate to a grey/black precipitate when we autoclave it. Anyone got a solution? We know its been done before, but we don't know how and seem to be missing something... Thanks

Hi everybody, I am currently doing CFD simulations of turbulent premixed flames. To test a combustion model on propane/air flames, I need the value of the activation temperature of propane/air combustion and, so far, I was not able to find it in the litterature. I have the value of this parameter for hydrogen (13000 K) and methane (20000 K). Does anyone could give me this value? Regards, Corentin

We are doing some voice work for a Japanese scientist. This is an example of the kinds of passages we have to put into words: Under air conditions, ground-state oxygen molecules (3O2) are degraded by 185 nm UV to (ground-state) atomic oxygen O(3P), which then reacts again with molecular oxygen to generate ozone (O3). The ozone is degraded by 254 nm UV and becomes an excited oxygen molecule (1O2) and an excited oxygen atom (O(1D)). Therefore, continuous generation of AOS is possible through the generation of ROS and O3 by 185 nm UV, and the conversion of O3 to AOS by 254 nm UV. Since both the 1O2 and O(1D) are AOS, strong oxidizability is predictably generated by exposing…

Is cold fusion safer than regular nuclear power? As in it's less likely to result in catastrophes on a Chernobyl-scale?

hi iam a chemistry student and i was wondering , who actually designs and builds chemical instruments? Chemists or chemical engineers ? We do have some courses about instrumental methods ,and chemical instruments in general(how they work ,schematics etc) and we also have electronics ,math and programming courses.But later on as a graduate could i do some research or perhaps work in a company that builds chemical instruments? I have asked this in yahoo answers also but i didnt get a definitive answer so maybe you know!

Hi all, i was wondering how is the level of UVA affected by weather conditions like monsoon. For example does the thick monsoon that covers India in the summer would mean that India experience less UVA then let's say an European country which would be under a clean sky, bright sun? Thank you!

Hi, So, I'm no scientist and I may not be the brightest when it comes to those areas. But I had this idea (not sure if it is even possible). I wondered if it was possible to clear facial pores (blackheads, pimples etc) by inventing a lotion that is mixed with (let's say) iron particles. You put it on your skin, let it sink in and wait until it mixes with the gunk you have stuck in your pores. After that you could run a magnet over your face to extract the dirt mixed with (let's say) iron. Would that even work our would the person be poisoned by the (let's say) iron? Would it mix with the dead cells/dirt in the pores if it didn't kill you before? Would the magnet pull o…

Okay so I need a little help with a few questions if someone could explain how to solve these that would be great (: Prepare 500 mL of 0.5 M Na2EDTA(there's a black dot in the middle here)2H2O Weigh out the correct amount of EDTA sodium salt. Show the calculation setup used to determine amount needed. -----How do I do this? Add the EDTA to 400mL of deionized water in a 500mL volumetric flask. Stir with a stir bar on a magnetic stir plate and measure the pH. Add 10 M NaOH drop by drop until the pH is 8. Is the EDTA completely dissolved? ----Is it? We didn't finish this in lab so I don't know how to tell.... And then there's: Preparation of 1.0 M Tris HCI with two diffe…

Hello I am a MMP form Portland (Medical Marijuana Patient). I do not partake in cannabis personally but at the request of my patients I have been asked to provide BHO. BHO stands for Butane Hash Oil. The process is using a refined butane (usually 5X refined) and extracting it from cannabis to achieve an oil or a honeycomb like form. Usually an extraction tube is used where cannabis is packed into a glass tube with a tiny spout at the end and a filter at the opposite end. Through that spout a refined butane is ran through and captured into a glass pyrex casserole dish. That dish is then heated to a temperature of I'm guessing about 120f so the butane is burnt off and the o…

Hi my names cathy i have joined this site in desperation regarding my situation, firstly a horrible smell started in my house about 5 weeks ago enviromental health could not determine what it was so the dims unit with the fire brigade came to my home and used a special device to determine what it is, they have concluded that the smell is toluene which is very dangerous to our health as its toxic, now we have to leave our home because of the dangers of this chemical....so what i want to know is how did it get in my home as we havent done anything around the house to cause this and we have lived here for 11 years and secondly how do we get rid of the smell so we can continu…

I can derive the equation, i know its main features for the electron in an atom. but i dnt know the physical meaning of the wave function of an atom and i cnt distinguish between the angular and radial probability function.....please help

I have an interesting question that I thought I'd ask here as I may not have adequate knowledge to even ask the question, but something occurred to me while learning thermo dynamics, specifically the second law, and how it relates to the gas laws, pressure, temperature, etc. When a cylinder of gas is compressed, work is being done on the gas in that cylinder. Easy. But could it not also be said that work is being done on the "universe" as (in a sense) it reduces pressure on the surrounding environment, so where is the work really being done? I get it that the universe is infinite, and it is (again, in a sense) nonsense to say the volume of the universe would change, b…

What exactly is a molecular ion? I ask because there appears to be nothing obvious that distinguishes a molecular ion from a polyatomic ion. I would be satisfied with personal inference but that merits nothing in regards to the correct and rigorous classification. I'm not sure if there's actually a subtle difference or if the terms are synonymous and thus interchangeable (the Wikipedia page seems to support the latter notion). If there is a distinction, I suspect it has to do with the type of bonding involved. Just looking for someone to shed light on these two terms. Thanks in advanced

Hi, I would like to share my friend Josh's latest research project. It is an audible periodic table, where one may hear the sound of the light from each element! It visually looks like a standard form periodic table, yet where the atomic numbers would be seen, there instead is a visual of the light frequency for the element. By clicking on a specific element, you will then be able to hear it's sound. Essentially, he took the atomic spectra frequencies and intensities from each element and downshifted them forty octaves into auditory range. Playing the table is somewhat like playing chords on a piano. For example, you can hear a progression up to Chlorine and a reso…