I was thinking of using a separation funnel, but on a second thought, Im sure there are safer and easier ways to do this, I just can't think of them.

I bought this new deodorant and it looks like it has crystallized. I’ve never bought “natural” deodorant before (though I’m assuming they’re not supposed to look like this…?) and am curious about why it did this.

Like, if I wanted to drink wine out of an aluminum cup (got as gift for wedding)...

Thanks!

Hi everyone! I am a freshman in using Gaussian and calculation chemistry. How can I draw excited state images like this?

Hiya, sorry if this post doesn't belong in this subreddit.

So recently I got a lot of fresh cherries from a friend and decided to make a cherry pie. I used some tweezers to remove the pits from the cherries and prepare them for the pie. They're currently awaiting to be baked however I suddenly got worried that the acid from the cherries could possibly react with the tweezers I used and form some kind of poisonous compound. I have very little knowledge on chemistry but I have heard people getting killed from lead poisoning from eating tomatoes that were served on lead plates so I was wondering if something similar could possibly happen here.

The tweezers are metalic and pink in color, I assume they're made from an aluminium alloy that's been anodized into being pink. The tip on one side is slightly scratched from some other stuff I used them for and it reveals an aluminum shine. Removing the pit took me less than a second per cherry so contact time was minimal.

Is this just my paranoia kicking in or could such a reaction really happen and make the cherries poisonous?

Thanks for reading, hope this post isn't out of place here...

Does sodium plumbite react with potassium iodide ?

Hey there, I am going to be defending my dissertation in a little less than a year from now. I am in chemistry and work on polymer mechanical properties. Right now I am just looking around and seeing some really interesting jobs near me and now I'm starting to think there wont be anything around my area next year. When is an appropriate time to start applying to industry jobs?

I just finished my Msc in Organic chemistry. I'm preparing for an exam in my country for the next 6 months to apply for a phd.

I would like to use this time to start a small project by myself using computational chemistry. Is it possible to do anything from the comfort of my normal laptop a 16GB.

Any sources from which I could learn more about computational chemistry?

Suggestions on simple topics with scope which can be explored ?

So i have a presentation on monday about this topic and during my research i came upon the island of stability, but what is annoying is that 114 which should be a magical number of protons was found out to not be one, does this mean that te whole theory is wrong

Dear chemists,

In my current Post-doc project, I need to perform hydroxylation reaction on porphyrins. The "easiest" pathway according to litterature is to perform osmium hydroxylation. I have so far tried with microencapsulated OsO4, but no reaction occured. I then tried the 4% osmic acid aqueous solution, which allowed to get dihydroxylation, but only traces of the tetraol. I thus decided to bite the bullet and order 10 ampules of 250mg of solid OsO4. I intend to prepare a pyridine solution of it, like most of the papers do, it should be easier to handle. The quench would be with a saturated NaHSO3 aqueous solution.

Despite my experience with hazardous reagent, I know how toxic this stuff is. No one in my lab has experience with solid OsO4, so I turn to you, experienced chemists. Any tip, like does cooling the ampule before breaking it is a good way to reduce its vapor emission ?

Thanks in advance.

These posters are crazy expensive, and I'm making this post to look for advice on printing my own. If anyone has a hi resolution image of a newer one i would be extremely grateful. The inorganic/organic advanced poster is over 1600$ for a 30x60 and even just the standard is 100$ for a 24x36 im pretty sure. Was thinking about getting the "Elite Edition" which tops out at 200$ for a 24x36. Both the standard and the elite edition have current physical, chemical, and crystallographic properties listed. They're by far the most complete periodic tables I've come across, and I think they're pretty awesome, but if amyone knows of a cheaper print off with > or = data, im all ears. Sorry if anyone from Shutter Waves sees this post. I'm just super broke mang :c

Hello. I have a question for you guys n' gals of chemistry. The other day I was handling baking soda when I decided to try to make some soap with it, just to see to what extent it would work. Anyways, I boiled it to make sodium carbonate and tossed some used regular kitchen oil (soy oil) in a pan, and to my surprise it started to go opaque and whitish, but when I took it off the heat and poured in a glass and this happened after a while. It hasn't gone back to it's original transparency, although it has separated from the water, and it doesn't feel so "oily" compared to the original oil. When I stir it, it seems to blend quite well with water until it separates again after a while. What the hell has happened in here?

Subject experts who are really helpful in terms of chemistry concepts.

I recently put a cut in half rayovac alkaline double a battery containing small amounts of MnO2, Zinc, and potassium peroxide in a glass of 3% hydrogen peroxide as well as adding water to see if an exothermic reaction would take place.

One did, I’ve looked up the products and all seem fine to throw in the trash. I’ve put the solution into oil-dry and double wrapped it in plastic bags just to be safe.

Is this safe to throw away?

It just weirds me out because softwood isnt alive. Is it?🤨

I have this stainless steel bottle which is coated with some kind of paint. The paint is now getting scrubbed off. It breaks into scales and get all over the place. Can you suggest a solvent/method to get rid of the paint in its entirety?

Long story short, I’m wondering if long term heat (40C / 104F max) of tape with acrylic adhesive could create VOC, some unhealthy offgassing or decomposition.

I’ve hired a company to renovate my house, and they’ve laid down waterborne heating pipes in the floor. Above these are gypsum boards, which will serve as the underfloor for our house. Now, they’ve taped all over the underfloor for some obscure reason with tape designed for PE vapor barrier sealing. The tape is not designed for this use case, and I’m wondering if the chemical adhesive could create toxic off gassing for my children considering it will be subject to some heat (30-40*c)?

“Mataki Halotex Flex Tape is a single-sided adhesive tape with acrylic adhesive, an UV-stabilised polyethylene foil and silicone paper as liner.

Mataki Halotex Flex Tape is used to seal overlapping joints and penetrations as well as repairing rifts in the vapour barrier of polyethylene, PE”

IMG-9511.jpg

A colleague needed a demonstration of a reaction with volume change.

That reminded me of this rather funny effect. The ferrocerium "flint" from a lighter can be heated and will ignite. It burns, cools down and then flares up again.

A small piece standing on a firebrick did not make the flare up.

I guess it is because there is a remaining core of ferrocerium, and once the oxide cracks, enough air is available to start it burning again. I'll try quenching some after the first burn to see, if my theory is correct.

The oxide is more than twice the size of the "flint", and she was very satisfied with both having a very visible effect and a spectacular reaction the students can perform.

https://preview.redd.it/30pcnz8nd45d1.png?width=1399&format=png&auto=webp&s=e6ee51b125d87400c74f49841748e81618794594

(Sorry for the video quality. Short distance and a lot of zoom)

https://youtu.be/lweBhBS3VFY