Applied Chemistry

You can nitrate the sugar molecules from cellulose to make nitrocellulose. Can you also nitrate mono and disaccharides?

Hello all Probably the wrong type of thread, sorry did not know where to put it. I wanted to know if I could clean my remotes safely with Nail polish remover and whether it conducted electricity or not. Being a bit sad, I connected a battery and bulb with a small amount of nail polish remover in the circuit, yet it would not conduct electricity. Does this mean that if some got into the remote, it could ruin it? It is Ethyl Acetate, although it says that Aqua is in it as well. Alan

Hey again guys, wondering if you can answer a couple of questions A while ago when I was playing around with electrolysis I dried out the anode (I think it was the anode) to find a green coating on it, which I suspected to be copper chloride, as I had added salt to the solution. I did a burn test on it, and sure enough the flame burned blue/green. However, since then I have not been able to produce copper chloride very well; it just seems to sometimes appear and sometimes not (and yeah, I am adding salt and using copper electrodes). When electrolysing water I also tend to get a blue precipitate (I believe it to be copper hydroxide - it displays many properties of…

Recently I've been trying out some electrolysis, just to observe the results (and catch the occasional bit of hydrogen ), and I'm hoping to start learning much more about chemistry in general, as at the moment I don't really know much about this. When I decided to first do the experiment, the only power source I had access to (that didn't provide a deadly current, that is) was an old 30v 333mA charger, on which I did some chopping and extracted the two terminals. I've been using this for the past couple of days to try different things, and I've read a couple of threads on here and I noticed mention that 12v is too high to get good results on some processes... Well I g…

I want to fix an electronic component working around 135 degree celcius by a material which must be thermally conductive and electrically insulating glue, adhesive, sealant or filling. Could you help me?

My new crystals... I just yesterday noticed how they grew up. They were growing up 4-5 months at least. I set up beaker in June-July 2015. The largest one has 3 cm +-.

I'm looking for liquids I can use for my tests on granular fertilizers. Water is not an option because fertilizers dissolve in it. I'm thinking of vegetable oils like rapeseed oil, soybean oil or a mineral oil like liquid paraffin. But the relative high viscosity is not desirable. If possible: non-dangerous/toxic liquids. Can anybody help me out? Thanks in advance.

Hi! I have troubles with the solution of this problem: Consider a cation transfer membrane with a fixed concentration Cx of sulfonate (SO3-) groups. The membrane is in equilibrium with a solution of a 2-1 salt (CaCl2). Calculate the Donnan potential between the cation transfer membrane and a 0.02 M CaCl2 solution. The charge density of the membrane is 2.5 meq per g dry membrane. The water sorption of the membrane in 0.01 M CaCl2 is 0.25 g per g dry membrane and the density of the wet membrane is 1.15 g/cm3. I use (s) and (m) for concentration in solution and in membrane respectively. In order to find the Donnan potential I need C(m)Cl-. Having C(s)Ca2+ = 0.02M and C(m…

Hello Science Forums! New user here! As a new user, I ask that anybody tell me when I go astray from the etiquette around here. So, the reason I came here was my interest in science, particularly the crossroads between chemistry and electricity. So I have been researching hydrogen fuel cells, and I am NOT here to talk about how they are the future or how they are a bust and a fad. I was hoping someone could explain the basic outline of how these machines work. Whether I get my answer or not, thanks for helping out!

I distilled some cloves for clove oil extraction. Whats the best method for obtaining the oil? -"dry out" the solution with salt - freeze the solution (not sure how this would work b/c eugenol is more dense than water) ~EE

Hello nice people! Here a bizarre idea to let liquids and gas react together: It's essentially the same hardware used to humidify air: many disks soaked partially in a liquid are rotated; they shall be wetted at each turn to expose a big area of liquid to the gas and promote the reaction. The (better detachable) disks surface is close to the liquid-gas interface and can also be a catalyst, or be itself a reagent, for instance copper-activated zinc. This must be an advantage over other processes, like a mist or bubbles. The gas could also be an other liquid if it's hard to mix - in case no better method exists. One could even superimpose several liquid…

Is there any cheap chemical test/ method I can make sure all the triglycerides have been converted into FFA's? -Something beyond adding water to the flask. ~EE

By 'heavily salted' I mean with table salt, NaCl, and nothing else. Both bowls sitting in the sun; assume they are both under the same conditions; both receive the same amount of sun light, one isn't sitting somewhere that's windier or anything. And if there would be a difference, how would sea salt hold up versus table salt? And bringing up wind just made me think of a bonus question: would water evaporate quicker in a location that is windy or slightly breezy? Yes, it is a question of air water-vapor saturation versus keeping heat from sunlight hitting the water close to the water as long as possible to aid in evaporation. My guess is that a slight breeze across th…

So, I'm making biodiesel. I try to separate out the newly formed esters from the glycerol and salts by adding water to a test tube, then the biodiesel on top. I VERY gently invert the tube once or twice, and keep getting a emulsion forming. The solution is completely golden yellow and very translucent. Once gently mixed it all becomes a cream color and cloudy. How else can I remove glycerol? I tried ethanol but the esters are pretty miscible in it.

this is a post with several question that all have to do with the various properties of light that i simply dont know. 1: light travels at approximately 299,792,000 miles per second. this has been proven oven time. however what has not been proven and my first question is, is this speed determined in space where very little to no resistance is or were these measurements take on earth where there is an atmosphere that the light has to travel through and if so what are the 2 measurements for these varying light situations? 2: to the current knowledge of the human populous, light is the fasted thing in the universe and it is impossible to travel faster than light. s…

why explosive nitroglycerin is the safe treatment for heart attack ? under what condition, we can make this medicine explosive ?(i have no intention to make explosive, i am just very curious about it.)

Recently much interest has been generated in 3-Bromopyruvate as an anti-cancer therapy. Could someone explain the chemistry behind the synthesis of 3-Bromopyruvate? This url gives 5 ways of making 3-BP. http://www.molbase.com/en/synthesis_1113-59-3-moldata-8403.html#tabs It appears that bromine displaces a methyl group in four of the synthesis reactions. Is this correct? If so, why would this be so. The full reaction given notes some of the reactions produce secondary products (for example, the reaction with water also produces tri-bromopyruvic acid). What might some ways to purify the synthesis from these chemicals?

Hello everyone, I am new in the forum and I am looking forward to learn a lot from here. My native language is spanish, so correct me, and ask me to rephrase if needed. Here´s the question: I got two different pH sensors that are calibrated with the same calibration solutions. However, when measuring the same solution the difference in measures is approximately 0,2. for example: -Phosphate buffer measured with pH sensor 1: 4,74 -Same Phosphate buffer measured with pH sensor 2: 4,90 Is this difference a big deal? Why is it caused? can I fix it? many thanks

Now for this experiment we don't need any fire, at all... HNO3 (Nitric acid) + H2O2 (Hydrogen Peroxide) = A very interesting chemical reaction When these two chemicals mix, they make a very violent hot temperature that will cool down after it looses all of it's energy after that violent chemical reaction... The color of the substance is grey and has a very 'jelly' look. I would not touch it if I were you. This experiment is interesting and you guys should try it too! It is fun and cool to watch! IAstroViz

Is there an easy way to make Iron Chelate or at least a replacement for it? I want to use this as an iron supplement for the plants in my Aquaponics garden. Recommended dosing for Iron Chelate is 2 ppm every 3 weeks. Problem is I can't find any Iron Chelate for sale where I live. The Aquaponics environment is as follows: Temperature - 25 to 30 degrees Celsius PH - 6.5 to 7.4 I read somewhere that ferrous sulfate might serve as a replacement. Any help would be great.

Can anyone do an herbal extract of alstonine for me from alstonei boonei?

Hello! What brand and model of vacuum pump do you have, use and recommend? or alternatively which model do you disrecommend? Best Regards!

I have a London Fog suitcase and traveling bag from the Chatham Collection. It was designed in the United States but made in China. They both have a warning on them saying "Warning: This Product Contains Chemicals Known To The State of California To Cause Cancer, or Birth Defects or Other Reproductive Harm." It does NOT say which chemicals. Nor does it say the ways in which someone would become exposed to them. From what I understand if these chemicals are in there in significant amounts this label must be on the product in California even if it's not something you would eat and the only way to be harmed by the chemicals is to eat the product. But I don't know…

I want to make my own kno3 from gunpowder. I obtained gunpowder from a nearby shop. Can you tell how to extract kno3 from it?

I recently carried out dust analysis by use of a laser dust counter. The results were in um/m3. I am seeking to convert the values to ppm or mg/m3. e.g. a result of 2028478 particles of 5.0um/m3 to be converted to mg/m3.