Chemistry

By now I would think at least 50% of the veteran members on this site would have heard about this news. If not, the story is here: http://www.cbsnews.com/news/scientists-make-potential-breakthrough-for-renewable-energy-by-accident/ It's been shared on alot of news sites and popular science pages. At first I thought this was awesome news! I figured, it would end the "corn for food, not food debate", gives us ALOT of fuel for future endeavors, and would reduce the carbon footprint by taking out CO2 from the atmosphere and reduce emissions when combusted. Upon talking with my colleagues, they sounded less than optimistic. They said it wasn't published in a legit …

I am a post-graduate college athlete, and fairly new to the world of medical marijuana, and have recently become quite curious about something now that i've been allowed to take pre-workout since NCAA had (rightfully) banned quite a few, as well as smoke. For a short background, I played 3 years of D1 baseball, and since have gotten labrum and UCL surgery, with some residual pain still residing. I found medical marijuana, sativa-leaning hybrids especially, to be a cure-all for my ailments, especially during my still rigorous workout routine. The pre-workout routine is this: About 10 minutes before I begin, I take my pre-workout Gat PMP, which is propietary blend of bet…

Can someone give me any ide for any study which includes Mathematic and Chemistry in one study?

When observing the absorption spectrum of a planet, I would like to know does a singlet dioxygen make a difference from a triplet dioxygen in the spectrum? Also, does being in the state of singlet/doublet affects how oxygen molecules cluster? Thanks for your help!

Hello, So I am in general chemistry and I have had a long absence since my last chemistry class which was high school back in 2006 so I have forgotten general principles. My teacher has her PHD in it so to her this seems simple, my question is two fold. When using Aufbau Principle and mapping out the 1s2-2s2-2p6-3s2-3p6-4s2-3d10-4p6-5s2-Etc... Is there an easy way to determine the valence election shells? My book mentions in passing that the valence shells are determined by the group/ period that they are located in but it does not explain that. The homework I am fine with but I have a test coming up next week and so I am preparing in advance. I ha…

Im looking for a compound that is magnetic, water soluble, and will not change the specific gravity of water. Is there such a product out there?

Hi guys, just wondering if anyone knows of a good way or a handy wee mnemonic to differentiate between these three principles? I understand the concept of each one well enough ( for A level chemistry standards anyway) but if I got a question asking, for example, to state Hund's rule it could end up just being a stab in the dark which of the three I describe. Thanks.

if i burn organic matters in a closed system, it produces carbon dioxide, water steam, a lot of heat, and other minor gases. my question is : how to separate these gases from each other ? i have heard about an electronic device used for this mission according to densities differences. what is this technique called ?and i need a good,easy-to-understand book about it. thanks in advance...

So while messing around trying to find a new mixture for rocket fuel I found reaction that looked very similar to thermite. I took some temperature readings, it heats up to 2700-3000F so not nearly as hot as thermite but pretty close! This is also ignited with a normal house lighter.

So a new guy was hired at my work, and him and I get to talking. Turns out he went to the same school as me and graduated a few years before me. So, we start talking about the places we'd study in school. I mentioned the 5th floor of a building that had vacant labs, that were COMPLETELY cleaned out (i.e. no test tubes, empty drawers, fume hoods completely off, no running water). Naturally I saw this as a perfect study spot as it was all empty. I checked for anything that might be harmful at first, and concluded it was safe. All in all I spent probably about 30 hrs a week on the floor, for about 2 years. I know for a fact I was NOT the only student to use these rooms, as I…

Hello! What are known transparent (in visible spectrum) Iron compounds.. ? Best Regards!

Hello! i will use NMR spectroscopy to determine host-guest binding, and i would like to kindly ask you, what technique is the best to perform NMR titrations!! I probably should prepare solution of guest, and add in portions cavitand into it (also as solution, in the same solvent, e.g. deuterated water)... is it reasonable to prepare mixture of guest with cavitand every time again? like preparation of host-guest, so i: take some part of solution nr 1 (guest solution, prepared for 10 trials for different ration, which volume is constant), add some part of solution nr 2 (cavitand solution, prepared for several trials, which volume changes - 0.5 eq, 1 eq, 1.5 eq with respect …

Hi, everyone. I'm studying about the potential energy of chemical bonds and I want to know more about the attractive and repulsive terms of Lennard-Jones potential. What is the origin of repulsive part ? Anyone knows any material that explain that ? For example, the equation of attractive part can be derived from van der Waals forces which has 1/r^6 dependence. Thanks.

Hi All, I did some searching in this forum and on the web with little success...really, almost none. Given the drought situation in my area, I would like to avoid refilling my spa because the current water is saturated. This is the term used, by the pool and spa industry, to describe when the chlorine, ph, and hardness chemicals have been used for a while and basically don't do much anymore. I've looked at reverse osmosis filters, but it appears they dump a high percentage of the water forced through them. So, is there a way to chemically cause the precipitate out or a different way to remove the chemicals. I'm chemist and don't play one on tv...I …

Pretty much all black plastics found on consumer appliances that I have tried to polish to a high gloss fails pretty bad, at best the results are inconsistent. Unlike many clear plastics, which are pretty easy. I usually do a two step method by hand , 1- compound w/coarse foam pad, 2 - polish w/fine foam pad. It's usually the polish process that causes visual flaws with any significant pressure & duration. You can't just do one pass to get the fine scratches out. Long before they come out, the appearance is ruined. Finally, why is it that the plastic looses it's chemical resistance to isopropyl alcohol? And even watered down iso. Normally when new the b…

Is it possible to dye Gallium metal. Can anyone tell me ?

Hey everyone, Why do we include ΔG° in this equation? Why does the Gibbs Free energy at standard conditions matter when finding the Gibbs Free energy of a certain reaction? I know that it is important for comparison and can help to determine which way a reaction will go, but I do not see why it is a fundamental part of the equation. Why does the free energy of a reaction have to rely on the free energy from the standard form? That seems very strange to me, and you don't see that kind of dependence in ΔG = ΔH - TΔS. Is the equation ΔG = ΔG° + RT ln(Q) somehow derived from ΔG = ΔH - TΔS? Thank you for any help!

I have Natural Latex sheet material that is smooth & some that is also chlorinated so it's friction is significantly reduced. Overall Latex is pretty scratch resistant to things like your fingers, tissue, microfiber cloths running across surface firmly. But after a few hundred passed over the Latex surface while there are no scratches, the appearance is dulled a bit for example black latex looks less dark & slightly more grey. But the smoothness doesn't seem to be affected. Why is this? Also I'm trying to find pictures of what the latex surface looks like under a microscope, maybe this will help me understand why exactly latex has soo much friction to …

My friend proposed a element to me. He did not say where the electrons and nucleons are placed but hes asked if an element with 2 protons 1 neutron and 13 electrons is possible, I'm not sure though. I will also ask him for a picture.

I was looking at the label for a bottle of SunnyD and it said it "Contains Sucralose" and then right underneath it is says "No Artificial Flavours Added." Isn't sucralose an artificial flavour? On a side-note: I think SunnyD tastes terrible and is nothing like real orange juice.

Hello once again, i was thinking about magic(not thay i belive xd, but i gave me an nice ideia). Imagine that we want water(we could easy remove it from the air). Imagine we want eletricity, because this is already tecnologie it would have bateries to store eletricty so this isnt also a problem). Imagine Wind, this gets a bit interesting, from what i saw if we manage to give energy to one part of the air, it would make an current. Now the most interesting part, Fire. We can use eletricy to start the Fire, but only that wouldnt work. So we need an fuel, that's were water enter, so could we use water as fuel? What is require for an substance to be fuel? …

I recently did some Amino Acid analysis on Protein extracted from different meat sources using Hitachi High Speend Amino Acid Analyzer L-8900 and there were some quantitative problems with the result. The final concentration of Amino Acid was much more than it should, in some cases it was more than 100 %. I extracted Protein from meat after wet cooking and used Dichloromethane/methane 2:1 for extraction of Fat. Powder was formed after leaving the sample for 2 days for wind drying. Protein concentration was 95-97 % in the samples, what do you think went wrong ? I performed the analysis for almost 3-4 times with 8 replicates in each analysis Any input a…

Does anybody know if mercury fulminate co-crystallizes with either potassium chlorate or perchlorate and what the ratios are? I'm trying to produce reasonably sized crystal. Thanks!

Hi everyone. I'm an Artist and work with water colors and paint. I'm looking to change the viscosity (rate of flow) of water for my water colors. I've tried working with: . hot and cold water, (there is a minuscule change) . adding starch ( works, but makes the art work flaky and does not adhere well to paper) Is there anything that can be added to water, that will make it flow thick or thinner ? Any suggestions would be appricaited Kelly

Does anyone know if it's okay to use 'Draino' to extract the sodium from its sodium hydroxide through electrolysis? I know that sodium can be obtained from NaOH (caustic soda) but the issue is that Draino also contains two other substances that are present in the powder with the NaOH, can I still use it? Thanks