ornery_chemist

joined 2 years ago
[–] ornery_chemist@mander.xyz 15 points 2 weeks ago* (last edited 1 week ago) (1 children)

You're missing the fuckton of heat that is generated during neutralization. I've had a few lab volcanoes because of it (LOC due to the low-boiling organics flash boiling).

[–] ornery_chemist@mander.xyz 15 points 2 weeks ago

Yes and no. No surface tension implies vanishing intermolecular forces, so the liquid would not be cohesive and would expand in all directions to the volume of the room... which is pretty much the definition of a gas. Not quite though: supercritical fluids also do this as long as temperature and pressure remain high enough, and are indeed useful in niche applications industrially.

[–] ornery_chemist@mander.xyz 41 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Those flasks can actually be really nice compared to normal RBFs for real reasons and not just memes. They are a lot easier to e.g. pipette out of because the taper gives small volumes of liquid more height than a typical round bottom, so less material is lost as skin on the glass. Same issue with stirring; it's a lot easier to get better stirring when the liquid actually covers the stirbar. "Just use a smaller container", you say, and yes, do so if you start with a small volume. But a lot of times in organic chemistry, you need to isolate the compound from solution by evaporating the solvent. Depending on the concentration, the volume can start large and end much smaller. These flasks can help recover a larger amount of precious material.

[–] ornery_chemist@mander.xyz 1 points 3 weeks ago

Um die US-Wahlergebnissen zu beeinflussen muss man nicht unbedingt gewinnen. Jede Stimme für eine dritte Partei hätte auch an eine der größeren Parteien (dh, eine der beiden, die werden sicher gewinnen: D oder R) gehen können. Wenn eine Untergruppe einer der größeren Parteien (zB Republicansche Musk fans--Demokraten gefällt er weniger) gemeinsam für die dritte Partei (Musk) stimmt, erhält die größere Partei (R) weniger Stimmen un deshalb gewinnt die andere (D).

Es könnte ein Versuch von Musk sein, Trumps Partei zu untergraben. Auch könnte es nur ein Wutanfall sein--das ist von Musk auch zu erwarten.

[–] ornery_chemist@mander.xyz 5 points 3 weeks ago* (last edited 3 weeks ago)

Char contains a variety of compounds that can be carcinogenic. It's usually worse with meats than veggies, though veggies still produce at small amount. However, if some char or smoke gets you to eat more otherwise unprocessed vegetables, don't worry about it; the health benefits pretty much always outweigh the additional risk.

[–] ornery_chemist@mander.xyz 5 points 3 weeks ago

To some degree, yes, but if a bit of char gets people to eat more calories from vegetables instead of highly processed foods, the cancer risk is pretty much always offset by decreased diabetes, liver disease, etc.

I'm assuming that the fried rice here has vegetables, of course. I know some people who don't...

[–] ornery_chemist@mander.xyz 14 points 4 weeks ago (1 children)

The local reenactors' reading out the Grievances this year certainly hits a bit different.

[–] ornery_chemist@mander.xyz 5 points 1 month ago

Just think about all the shit you had to do to get from then to now, and then imagine that you have to do all of it all over again.

[–] ornery_chemist@mander.xyz 62 points 1 month ago* (last edited 1 month ago) (2 children)

Pretty sure I just got ~~anti-bribery~~ ethics and compliance training that said no one in my company is allowed to accept such gifts lol

[–] ornery_chemist@mander.xyz 5 points 1 month ago* (last edited 1 month ago)

And calculating far too many digits of π by hand

[–] ornery_chemist@mander.xyz 3 points 1 month ago* (last edited 1 month ago)

-onium is usually an extra group/proton (carbonium, oxonium, bromonium...). HO+ isn't too hard to approximate--just take a hydroperoxide or peroxyacid and add strong acid like with piranha :)

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