Organic Chemistry

Give me the details of the gas permeable membrane for using dissoved oxygen and carbondioxide sensors

Hi, Thanks for taking the time to read this! I'm student chemist (only 21), and last week I got exposed to alot of methyl iodide when I spilt some dissolved in DCM onto my hand, although I was wearing nitrile gloves I think the chemical passed straight through, I had some skin irritation the next day. Now, after reading up so much about MeI, I'm paranoid that I'll get cancer. Am I being reasonable in worrying about getting cancer because of this exposure? I seen a doctor, he says it's unlikely, but isn't it also extremely unlikely that someone would have this sort of accident? Many, many thanks, John W By the way, it was about 15 mL I split on my glov…

Hi I am taking a summer course in organic chermisty and I need to make the following alkenes through a grignard reaction. 5-methyl-1-hexene 2,5,5-trimethyl-2-heptene How do i go about to do this? I'm sure i could find the answed in my textbook, but since it wasnt in stock at the book store i have'nt gotten it yet. Thanx in advance Maria

Probably somone here can help me out.. This is not my hw lol. its actually part of my finals which I never got to answer.. ugh it got me frustrated. 1. starting with 1-chloropropane formaldehyde and butanone, synthesize 2-methyl-2-ethylpropanal 2. starting with ethyne, synthesize (2S,2R) 3,4-hexanediol

I need to show how I cansynthesize the following compound from any starting materials containing no more than six carbon atoms. http://imgur.com/EYV3a Could someone please help me? /Maria

Hey guys. I'll try not to bore you with the details, but basically I've been using Cotton Seed Oil and have to switch to Palm Seed Oil for this product... and I'm not getting the same ability to stick. I checked the ingredients I noticed the Palm oil has a far greater % saturated fatty acids in comparison with the cotton seed, which seems almost inversely proportional. I believe that the unsaturated fatty acids should have a lower melting point, so I'm thinking that probably has a lot to do with it. Is there a simple technique that can be used to convert saturated --> unsaturated fatty acids in oils? I know it's easier the other way around, through hydrolysi…

I feel real time difficulty to uderstand the steriochemistry and reaction mechanisms in organic chemsitry, is there any one to give some useful tips to have understanding the sterio chemistry as well as reaction mechanisims in organic chemsitry. Merged post follows: Consecutive posts mergedtips to understannd organic reaction mechanism and steriochemistry

Hello all. I am taking Organic Chem in my next semester of college. I'm really nervous, I have heard from people that Organic is really hard. Any inside information I should know before the class starts?

In the picture, will carbon 4 or carbon 6 appear more downfield on a C13 NMR spectrum. They are both one carbon away from a nitrogen, I am guessing 4 but I have no logical reason for this answer. Thanks for the help

sorry if this is in the wrong section but I thought this section would be best suited to this topic. Anyway back to the topic. Can anyone tell me the difference between dative and normal covalent bonding? I've read that they is no difference in them once it has been set up. Can anyone tell me why is that so and why does dative bonding occur?

I have an idea on how to stop the oil leak in the gulf. I will say it and would welcome a response on why it would work or not work. My idea is to cool the contents of the pipe down to the point that it slows down. If it does not freeze thats ok, at least it would slow it down and make the other processes that have been used thus far more viable. My theory is to either pump or sink a tank of liquid nitrogen down to the bottom. If from the surface if you pumped liquid nitrogen through one main tube it might take more of a pump than if you used several small tubes to help overcome the pressure of the 5000 ft. depth. My idea on one side would be to introduce liquid nitrogen…

c | c - c - c | c Just started organic chemistry in high school. In the above diagram there are three hydrogens hanging off the four outer carbons. Is the answer 2,2-dimethylpropane or 2-dimethylpropane? edit: hold on those 2 carbons- the one at the top and the one below is supposed to be attached to the middle 2nd carbon of propane but I can't draw it properly for some reason.

First allow me to apologize if this is the wrong place to post this query. I've been helping a buddy of mine start up his worm farm. He's working on a system of animal waste management that delivers 100% organic fertilizers and compost. My question is how do we, or rather what do we feed the worms to create 'darker' castings? We've been tinkering with the nitrogen levels, trying augments like blood meal and slaughterhouse 'fruit punch' (blood and water mixture) during the composting, but we're not there yet. Any suggestions from the Chemistry Community? Thanks. (http://www.northtexasorganics.net/)

Hi, Thanks for taking the time to read this! I'm student chemist (only 21), and last week I got exposed to alot of methyl iodide when I spilt some dissolved in DCM onto my hand, although I was wearing nitrile gloves I think the chemical passed straight through, I had some skin irritation the next day. Now, after reading up so much about MeI, I'm paranoid that I'll get cancer. Am I being reasonable in worrying about getting cancer because of this exposure? I seen a doctor, he says it's unlikely, but isn't it also extremely unlikely that someone would have this sort of accident? Many, many thanks, John By the way, it was about 15 mL I split on my gloves …

could you tell me how to bubble bromine gas into the rection solution with liquid bromine or something else. during the course, what should i be aware of?

can any one please tell me how does tetraphenyldihydrophthalic anhydride is formed from tetraphenylcyclopentadienone and maleic anhydride in the presence of bromobenzene?? Is it a kind of a Diels Alder Reaction?? And what is the role of bromobenzene??

how should I define substrate changing with time in michaelis menten kinetics?? I found this : S(t)=S(0)*(1-(vmax*S(0)/Km+S(0))/S(0))^t, where S(0)-initial substrate concentration, but my tutor says it's not right else I tried to solve: dE/dt = -k1*E*S + ki*ES + k2*ES dS/dt = -k1*E*S + ki*ES dES/dt = k1*E*S - ki*ES - k2*ES dP/dt = k2*ES I solved those in maple, but I get only plots(which seems fine) and no functions. So my question is what is the formula that I could use to find out how substrate concentration changes in time???

I want to dry milled wood lignin in vacuo over p2o5. How should i do it and what instruments should i use for doing that.......can anybody plz suggest me.......

I've looked it up and google'd it and everything, but can anybody tell me what CH3CO2(–) is? Thank you!

Can any one please how the HOFMANN rearrangement takes place in phthalimide ( isoindole-1,3-dione) in order to give 2-aminobenzoic acid? ( the reaction mecahanism)

I got the FAB mass spectrum of a compound synthesized by me. the technician first run the glcerine and obtained a spectra of glycerine with back ground was obtained, then solid sample firstly dissolved in chloroform and then subjected to Mass analysis by FAB ionization technique. There was no any difference in the both spectras. what i should do further to have evaluation of molecular ion identification of my organic compound:-(

Hi everyone, I was wondering whether anyone could help me to explain why the chemical shifts in my proton and carbon NMR results do not exactly match with those reported in the literature? The solvent used in my experiment is exactly the same as the one used in the literature of reference (CD3OD), however the frequency applied in my experiment was 500MHz as opposed to 400MHz by the study i am comparing my results with. For example, in my proton NMR spectra, my results are usually 0.08 to 0.26 ppm higher than that in the literature (e.g: 5.16 x 5.00; 7.51 x 7.25). In the carbon NMR, the results, the variation goes from 0.01 to 3.58 ppm. I wonder, is that acce…

Provide a structure for the dibromo-product expected from the reaction of 1,2,3- trimethylcyclohexene with Br2, and use this product to describe the difference between the terms "absolute stereochemistry" and "relative stereochemistry".

This is what I'm given No significant IR functional group signals Mass spec: M+ m/z 88 Fragments at m/z 58, 50% intensity and m/z 28 100% intensity H NMR: singlet at 3.7 ppm 13C NMR: signal at 67 ppm I have to find the molecular formula and structure of the compound.