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Organic Chemistry

All chemistry involving organic compounds (those with C-H bonds).

  1. Started by kaosisallwesee,

    Hey everyone, first post and I know its a basic one, but I've got a question I hope you can help me with. Is the weight of the salt taken into account when labelling pharmaceuticals? For example, if the packaging states "Drug X Phosphate 50mg" does that include the weight of the phosphate salt? I started thinking about Hemihydrates and how little they weigh compared to bulkier salts like phosphates and sulphates, so I assumed it must be taken into account when dosing drugs as some are more potent by weight than others...... but I actually have no idea. Thanks for any help guys.

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  2. Hello, I am looking a solution to reduce benzyl alcohol content in my solution, 100ml solution contains %5.5 benzyl alcohol by volume rest sesame oil. I want to reduce Benzyl Alcohol content to %1 This solution is sterile and also I can't heat it. It is in GL45 glass. I may filter some other things to make sterile and add to the solution then withdraw. IDK I need a genious way to reduce it.

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  3. https://en.wikipedia.org/wiki/Natural_rubber Do you feel the following materials can have a paint color coated to the Rubber material which should last for a long time ? i.e Blue, Red, Green, Yellow, Orange etc 1. Conveyor Belt. 2 Rubber tires in a Vehicle - Two/Three/Four wheeler. 3 Escalator. 4 Treadmill Thanks & Regards, Prashant S Akerkar

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  4. https://en.m.wikipedia.org/wiki/Urea Chemical composition of Urea is CH4N2O. Taking reference of Urea's chemical composition, Can we find other organic chemical compounds, which can be used as Fertilizer? Thanks & Regards, Prashant S Akerkar

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  5. Started by prashantakerkar,

    What is the chemical composition or formula of Wax used for candle making? Thanks & Regards, Prashant S Akerkar

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  6. Started by prashantakerkar,

    https://en.m.wikipedia.org/wiki/Camphor Chemical composition or formula of Camphor is C10H16O. Can the yellow flame generated be changed to any different flame Colour by changing the chemical composition of Camphor? Thanks & Regards, Prashant S Akerkar

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  7. Started by PaulB,

    Hi Can anyone assist a non chemist who's working up ideas on sequestering carbon by dehydrating sugar with sulphuric acid. All I ever seem to find are utube videos showing demos of what I was shown years ago in a lab. What I am trying to find out is whether that process is a viable, cost effective method that can be scaled to produce around 100 kg of carbon. I am also trying to understand whether or not it's possible to estimate the amount of heat, sulphur dioxide and co2 produced so that the process can be managed so as to minimise co2 emissions and benefit from heat recovery for example. I know burning in air and with acid is essentially the same chemical process but d…

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  8. Started by The GreekFreak,

    I am currently working in an organic chemistry lab for a summer internship. My mentor gave me this problem today and I can't quite figure it out. I haven't done actual arrow pushing in over a year so I am having trouble. Thank you!

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  9. Been looking all over the web for nitrate salts, but can't seem to find anything. Your help will be really appreciated! Please and thanks!

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  10. Started by Organicchemistry,

    Hello, Could anybody help me solving this synthesis? Have to predict a pathway for the conversion of benzene to N-(2,4-diethylphenyl)cyclohexanimine including the necessary organic and inorganic compounds. I am thinking about using H2SO4 and HNO3 in the first step.

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  11. I'm going to make a 100 liter solution to desinfect various tools used in Shiitake production so it's important the solution kills mold and mold spores. I've been looking into various methods and chemicals. At first I thought about going with H2O2 since it's safe and does not generate harmful by-products. Since I do not have peroxide stronger than 3% readly available I discarded this route. I thought about a solution of calcium hypochlorite taking the PH below 7 but since that would probably be quite dangerous since I'm not sure about the concentrations / ph levels used to generate minimum ammounts of chlorine gas. I surely don't want to be dealing with th…

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  12. Trying to produce sodium nitrate from ammonium nitrate and soda bicarbonate for industrial use. We produce coal briquettes but to catch fire is slow.

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  13. Started by Andrea93,

    Hi! I can't solve this question: I think it's a intramolecular Sn2 reaction But that can occor only with "trans isomer" So in the first one what is the product? Does NaOH deprotonate the -OH group or give a Sn2 reaction on the carbon bonded with Cl? (Usually acid-base reactions are faster than Sn2 ones) I have the same doubt for the last one. Some help? Thanks!!

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  14. Started by mike888,

    Hi I am trying to make an ester from primary alcohol and carboxylic acid that contain multiple double bonds. Fischer–Speier esterification is not working since the addition of sulfuric acid causes the acid to react with double bonds. appreciate any advise

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  15. Started by Carl Fredrik Ahl,

    Hi, I wonder if fructose can be converted to energy (ATP) like glucose can. How does fructose differ from glucose?

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  16. Started by hannoe,

    Have I understood correctly that the resonance hybrid orbital does not represent any actual orbital (with new shape) in the molecule? If a new orbital would form then only two electrons could be there but there are many examples where different pair of electrons can go an occupy the same orbital in different resonance structures (e.g. conductive polymers could not function otherwise). Moreover if one huge hybrid orbital would form then it could be very big which leads to larger energy level for electrons as more nodes must form, which means higher frequency which mean higher energy... Meaning, the electron pairs that can move around can be only in pi-bonds and AO-s jus…

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  17. I'm not sure which would be better. I ask because I'm worried using 90% etoh will have an overpowering smell on the final solution. Also, 40% may not be as effective as 90%. Thoughts? ~ee

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  18. This is the n-phenethylacetamide mass spectrum. His base peak ion is at 104 m/z. I have long been thinking about what its structure might be, but with a m/z ratio of 104 I can not think of anything plausible. Can you help me? Thanks in advance

  19. Started by Acreator,

    < I will be posting this Topic in the Inorganic Chemistry section as well, it is up to moderators or anyone else to get rid of it in any section. > Alright, I know there are a lot people that believe that Silicon-based life is not possible, and there is science to prove a lot of it. However, it is an interesting field and I think we shouldn't discredit it. While it might be improbable for an organism to evolve to be entirely silicon-based (the planet might have to be 1000 C just to start trying) we have the advantage of computers and molecule visualization programs to let us think them up. Now, my proposition is this, if there is a…

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  20. Greetings, good people, I am in need of *delete me* My girl has a tattoo and won't tell me what it is, so far i have narrowed it down to aminoacids, nitrocyclopenthane, I guess... I have absolutely no knowledge of chemistry and any kind of help is welcome. The link bellow is the pic. I was told that the sequence is (seeppislelq) but I don't know if that is correct. I apologize if this is not the right place to post such questions, but I am out of ideas. Thank you all in advance and best of luck in all your future endeavours. Best regards, Milan

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  21. Hello, I'm just wanting someone to give me a little bit of guidance on the following conversion, i'm trying to convert my reading of umol/min/umol to umol/min/mg- i think i have the correct answer but i need my method validated if someone could possibly help? i have a spectrophotometric assay of a purified recombinant enzyme, Spy057, against p-nitrophenyl N-acetyl-β-glucosaminide substrate (total reaction volume, 2 mL; volume of Spy05783 added, 50 µL): - I have calculated the umol/min/umol using beer lamberts law to 289.63 - the Mr of spy057 is 43507g/mol - i then calculated that there is 43.507mg/umol - there is 1.899 x 10E-4 umol added rea…

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  22. How to Assign the structure from the following 1D and 2 D NMR spectra of a bacterial secondary metabolite. Molecular formula by MS was determined as C13H21N5O5 . IR absorptions were observed at 3220 and 1660 cm-1. I have uploaded the details : Structure Elucidation of biomolecules.pdf Please help, its really urgent. Thank you in Advance

  23. Started by tyroscene,

    Can anyone identify the molecule (functional group?) shown horizontally on this new US postage stamp? I believe the vertical one is Polyethylene terephthalate (PET). (The stamp is "Science" from the "STEM" issue of April 6, 2018.)

  24. Started by Adri27,

    Hi all, A man told to take some green cardamoms, chew and spit in a glass jar, then take some water in my mouth hold for 2 minutes and spit into glass jar, as soon as the water entered the jar as I was closing the lid immediately flames started to erupt and fire happened in the jar, then it turned into smoke. All the tools were mine including water but he asked me put the cardamoms on a normal white sheet of paper (he had lots of paper on the side of his desk and he pulled out a random one) before I put it in my mouth. Any insight and explanation anyone can offer. Seriously looking for answers as I’m inexplicably thrown off guard to say the least. …

  25. Please excuse the appallingly incorrect chemical equation balancing it's three am (0300am) and I can't sleep... But I'm exhausted!!!! Sodium acetate + sodium sulphate = glacial acetic acid right? I just need to react both the anhydrous sodium acetate with the anhydrous sodium sulphate on a vacuum chamber right?.....while they're being agitated vigorously? Is this correct? If not pls enlighten. The product s mells like pure acetic acid so far.... At won't point do I need to distill this, can I use fractional crystalizatin to get a pure acetic acid crystal in a hydrogen free enviorment (aka reactionary atmosphere)? (,I'd use a …

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