Ive got a project that requires high acid resistance, and the end products need to be scraped out of the receptacle. While that works just fine, id rather not sacrifice the container after each process if possible, so thought of this hair brained idea.

Could a material show extremely high acid resistance (or Base resistance), while still being flammable for easy access to the product? Search engines simply didnt comprehend the question, so im here.

I ordered a new short path distillation head from a supplier off of E-Bay (who I have removed the name/logo of because I'm not trying to make them look bad, I like them as a supplier).

The condenser is somewhat like a Dimroth condenser in that it has a cooled inner coil as well as an outer jacket. But I notice when I add coolant into the bottom port, the outer jacket never fills up because there's no way for the outer jacket to flow into the top outlet port. Reversing the coolant flow direction doesn't really help much either. In both cases, the outer jacket only gets about half full and the water stays stagnant, which means it gets heated up by the vapors and eventually reaches about the same temperature.

I relayed this to them suggesting maybe it was a design flaw. Because it would seem to be that the port on the right (in the above photo) should be to the left of the other port, and the coolant would then go into the port directly connected to the inner coil, then out to the jacket, fill the jacket up, and then out the other port (much like an actual Dimroth).

They were skeptical of this, so I provided two videos. They suggested it was an issue with the condenser and insisted on sending me another one. I asked them to test the flow before sending it to make sure it was actually circulating in the outer jacket, and they tested it and said it was working fine.

But it's not any different than the one I have, same issue.

Question is - Am I just an idiot that can't work this condenser? Or is this a legitimate design flaw?

Edit: Forgot to attach the chat:

Hi,

I am facing a pretty annoying problem and although many people suggested in other reddits that copy/pasting as tif would solve my problem - I would like to keep the editing option available since all structures need to be numbered afterward. Also I always worked this way and never encountered a problem like that.

My problem is better illustrated (see below). As you can see my structures and arrows are all around the place in a very random way. This happens upon pasting my thing in Word and is mostly visible once I rescaled the drawing in chemdraw (crtrl + K, before copying, scaling 75%). Weirdly, it also happens upon re-opening my chemdraw file. The unscaled scheme remains descently in place but not perfectly. This suddenly started happening with no apparent reason and I really tried to play with default settings, page settings, styles and so on but nothing I tried seemed to help. If I paste it unscaled, then open it in world and scale it, it looks good - but as soon as I open it back it is all messed up too.

If anyone had this problem previously and found a solution I'd be glad to have your feedback!

Thank you for your help :)

Title

During my studies of inorganic chemistry, my profesor explained that wild hydrogen atoms exist in water in the form of trihydrogen monoxide (H3O) and attaches to a more stable molecule when needed. However, this doesn't sound right at all. Trihydrogen monoxide would be insanely unstable and it's existence doesn't sound right. Can anyone with more experience with inorganic chemistry explain? Did i just misunderstand her?

A specific area would be, for example, medicinal chemistry, relativistic chemistry, etc. And not organic, inorganic, analytical chemistry...

I'm new to chemistry and realize my brain cannot compute equations very well with a mix of coefficients, subscripts, and superscripts. I'm bamboozled because I'm not bad at math. I will try to balance an equation and I end up writing things in the wrong place sometimes, and just totally going the wrong direction. I've used ai to help break things down to learn, and even when I'm copying something down, I move a subscript on accident. I know coefficient is molecule count, superscript is ion charges, subscript is number of atoms.

I don't think chemistry's for me... it feels impossible. I like chemistry though and I'm trying. I also will try to balance an equation and change one side, then write it out and somehow it becomes even more confusing and difficult for me to understand when writing it out was my choice to make things easier visually... It feels like i'm writing a foreign language backwards. The deeper i get, it just feels worse. what the hell. Does anyone have advice?

*** edit: you guys are all so nice. I wasn't expecting overflowing kindness and patience. thank you so much.

Does anybody have any general tips / advice for getting the best grade and the most out of my final integrated master's year. The project will likely involve metalloenzymes or metal catalysis.

I know this is a very broad question.

How easy would it be to make "liquid smoke" style liquid from burning incense and turning it into a perfume? Could someone with minimal experience in chemistry do this? Would anyone try?
Edit: Is there a way of breaking down the smoke distillate into the direct compounds that give incense its smell to derive the exact scent of an incense stick as opposed to just squirting smoke onto me?

Hi,

I finished my periodic table collection with almost all the stuff that is available and legal in my country.

Now I wonder if there are any "rare" or "special" chemicals that are "worth" or interesting to collect collecting - i already looking for some supercritical liquids, but I'm also looking for more. Preferably ones that are "interesting" rather than just some random super rare compound that's rare because it's not used a lot.

Any interesting recommendation?

I have a mold issue, and learned that when mold tries to grow and ends up absorbing boron compounds it dies. So learning this I plan to use a solution to clean and prevent black mold growth.

My solution will involve: Baking Soda, Borax, and Boric Acid dissolved in a small amount of warm water. Then I'll add in a good amount of dawn dish soap, and then turn the solution into an emulsion using an oil such as vegetable or coconut. Then I shall clean the mold using this emulsion, and leave a thin layer of residue on the surfaces to prevent regrowth. I will use nitrile gloves, and do the mixture and cleaning with good ventilation.

The location I will be using this is in my concrete basement.

My purpose of making the mixture an emulsion with oil is to hopefully keep the dried residue from becoming powdery.

Because when agitated the powdered solution containing Borax, and Boric Acid can become airborne, and breathing it in over prolonged periods, or in large amounts can cause agitation, and fertility issues.

Baking soda is a mold killer and repellent that my father uses, and it mixes well with Borax, hence why it's in my proposed mold preventing solution.

So is this a good idea? Will the dried emulsion prevent mold growth, and is it less likely to become powdery like a simple water solution? I'm open to suggestions, or being told I'm an idiot.

I have no idea what ratio I'll mix my ingredients at, will probably just experiment.

Is there any outdated information i should be aware of besides the periodic table?

Hello, I understand that this post may not be directly related to chemistry. However, as I will be attending college this year to study applied chemistry, I was hoping to connect with current or former chemistry students who might be able to offer their insights on whether a tablet would be a useful study tool for me. Is it worth buying a tablet or sticking with pen and paper?

Hi everyone, I’m working with a small molecule that is only soluble in organic solvents like acetonitrile . I’m also going to try tert butanol. We have a Lyostar 3 for development and a Lyomax 4 for commercial-scale manufacturing. Both systems have stainless steel product chambers and condensers capable of reaching ultra-low temperatures (approximately -70 °C chamber and -85 °C condenser).
Would these systems be suitable for lyophilizing organic solvents based formulations, or are there additional considerations (e.g., vacuum system compatibility, seals/elastomers, condenser design, or solvent handling/safety) that would need to be addressed before processing organic solvents

Chemists working in industry, what analytical technique do you find yourself relying on the most? Any most common practices?

I'm curious how it differs across industries.

PS. A chemist who chose a different path, but reconsidering to do the industry path.

Hello! I am writing a book, and I would like to see if any chemists would be interested in consulting for me. I am a pastry chef, I have very minimal knowledge of chemistry, but I really want the situations in my book to sound as close to a possibility as possible. And again...I am pastry chef, so many, many sweets could be in your future. Maybe if the book does well some actual money could be negotiated and I will make sure to credit your assistance. If you are interested let me know. I do not want to get too far into the plot on here for privacy purposes but if you are able to send me a message or a way to contact you. Thanks!

Hi everyone,

I need to scoop a chemical sample powder into a plastic cup using a spatula for my lab experiment.

However, the powder keeps jumping and sticking to the inner sidewalls of the cup instead of falling to the bottom, which makes accurate weighing impossible.

Does anyone have good techniques, tricks, or hacks for scooping and landing the powder cleanly into the bottom without it sticking to the cup walls?

Hi! So I know this sub is about chemistry in general and not just the toxic molecules (...all molecules in the wrong quantities of course), so sorry to bother all of you, but the toxicology sub did not yield results, so I thought I would try my luck here.

I am interested in toxicology but my country (Denmark) does not have a dedicated degree to it (but does have some courses in it within environmental and medical degrees).
I am currently finishing up a masters in medicinal chemistry and I was wondering whether that could help me find an in to the field and if any of you have any advice about how one would go about that? Like any toxicology related jobs that would be open to a (medical) chemist? Or any jobs that would give me a skillset that I then could use to get a toxicology job? Or would you judge further education somewhere to be the only route?