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#chem
goodvibesandchemnotes · 11 hours ago
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Cool science post!!! Please enjoy! And keep in mind just because something has a higher LD50 (more needed to kill you, less toxic) doesnt mean it's magically Better. Aspirin has a lower LD50 than hydrochloric acid, vitamin D has a lower LD50 than cocaine, and nicotine has a lower LD50 than heroin. Also, this chart doesn't take into account chronic health effects or sub-lethal toxicity. Just how much is needed to kill you in one dose.
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A few things that stood out to me (assuming a statistically average, 70kg adult):
>MSG is 5 times less toxic than table salt, per gram (it has 5 times less sodium per gram). And it tastes better, too! The long term health effects (other than specific allergies, which are immediate) are minimal, its a misconception that it's extremely unhealthy.
>Botox will kill at 0.000000002 grams. And we inject it into our faces to look younger. What the heck, guys.
>LSD is dosed in increments of 100μg, or at about 50-100x BELOW its acute toxic dose. This is known as a "therapeutic window", how far is the useful dose from the toxic dose. LSD has a fantastic therapeutic window compared to many medicines, but its still so small (similar EFFECTIVE dose to fentanyl, 5000% higher LD50) that extreme caution must be taken in dosing. A toxic but nonlethal dose of LSD is gonna leave some bad psychological damage.
>you can eat twice as much Magic Eraser as you can table salt before dying. I have no idea what to do with this information, but there you go.
>you'll die if you drink 10% of your body weight in water. This is pretty hard to do, but there are vanishingly rare cases where people drink so much water that their blood cells explode.
>CBD technically has a lower LD50 than THC? Both are pretty non-toxic, it'd take 70 GRAMS of CBD at once to kill you, and it's usually dosed in MILLIgrams. However, a quarter of the LD50 of THC would be a very very bad time (ever had too many edibles?) while a quarter of the LD50 of CBD would likely just feel drunken.
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blve-orion · a day ago
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Watched the BlueOrigin test flight today, and I definitely had a hard time ignoring the shape of the thing😂
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goodvibesandchemnotes · 4 days ago
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When life gives you lemons, make lemonade. When life gives you nettle stings... write a tumblr post about it?
Guess who just learned what bull nettles (Cnidoscolus stimulosus), also named the "tread-softly" look like! You'll never guess how I found out these were a stinging plant. Go ahead, guess.
They apparently grow in this part of the south. What beautiful white flowers! This genus, Cnidoscolus, grows all across Central America, with species as far north as the SE United States and as far south as Brazil. They're not a true nettle (family Urticaceae) but are instead part of the Spurge family (Euphorbiaceae).
They don't use a particularly unique venom to sting with; the trichomes (hairs) are simply filled with histamine. When touched, the hairs break and penetrate the skin like a hypodermic needle, and inject pure histamine (the neurotransmitter responsible in mammals for wakefulness and itching, among other things) into the skin. It feels like an electric shock at first, and then itches and stings like crazy for a while. Since it's only histamine, the body remediates it out quickly, and the sting is gone within a few hours (no more than a day).
To treat a nettle sting, first get all the hairs out. This can be done with tweezers or, if you're like me, duct tape. Then, wash with soap and cold water (hot water would open the pores and make the rash worse-- cold water closes the pores and helps numb the pain). An antihistamine like Benadryl (diphenhydramine) should make the leftover itching clear up quickly, although we all know the side effect of Benadryl haha. I'd recommend pouring yourself a cup of coffee after treating the nettle sting!
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nemvagyoksenkijateka · 4 days ago
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𝐀𝐏𝐑𝐈𝐋 𝟏𝟏, 𝟐𝟎𝟐𝟏 | 𝟑:𝟓𝟏 𝐏.𝐌.
today to-do:
• revision some chemical experiments, what’s are very helpful for the written part of high-advanced Chemistry exam, too (6 is done!)
• studying some organic chemistry: carbon acids, etc.
ps: hope everyone’s safe!<3
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fumpkins · 2 years ago
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Different types of chemical flames.
Differenttypes of chemical flames.
New post published on: https://livescience.tech/2018/07/18/different-types-of-chemical-flames/
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blve-orion · 6 days ago
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Today some spacejunk got far too close and I hate waiting to discover whether a shitton of space debris was created
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mattieandmatter · 7 days ago
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fuck orgo has numbers in it again
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nemvagyoksenkijateka · 7 days ago
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𝐀𝐏𝐑𝐈𝐋 𝟖, 𝟐𝟎𝟐𝟏
I had a one hour long phone call today with one of my acquaintances (just the son of my mom’s boss; we were maybe a bit closer friends long years ago, after we were seperated from eachother a little & after almost 6 years we talked again!), and he will take high-advanced Chem in May, too. I finally roughly understand thermochemistry!!!✨
First picture just a vibes from today evening revision some organic chem, because it’s my weakness, second is from today morning while I wrote May/2020 high-advanced Chem (I got 60%!!!)
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The atmosphere just before the practical finals
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I'm happy they are all done. Plus, really happy with how I performed yay!
Now gotta continue the grind for boards! Let's goo
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hierophantbeans · 7 days ago
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worst part of going from doing chem all through school to a marine bio based job is the fucking
concentration notations
percentage means fucking bollocks to me. i literally don't understand how people live this way
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oqxy · 8 days ago
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bbgirl im studying genders you haven’t even heard of
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So my teacher sent a pdf of all possible viva questions, it has 86+ questionss. Ya...y
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fumpkins · 2 years ago
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Gallium
Gallium
New post published on: https://livescience.tech/2018/07/27/gallium/
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