Tumgik
#general chemistry
acelizystudying · 7 months
Text
Tumblr media Tumblr media
first general chemistry laboratory demonstration: survived!🌞🦩👩🏻‍🍼🧪
• bionics & laboratory literally are my lives, i’m so into this life i created to myself (even with the countinous stress factors, running out of caffeine & insomnia:D)
298 notes · View notes
er-cryptid · 7 months
Text
Tumblr media Tumblr media
Patreon
95 notes · View notes
Tumblr media
First day back in chemistry class. :) ✨
8 notes · View notes
creature-archive · 1 year
Text
girl what the hell is equilibrium. how am i supposed to see if Q is less than or greater than Kc if they both use the same formula. what the fuck are ICE tables.
2 notes · View notes
redysetdare · 3 months
Text
Sometimes...characters being in a romantic relationship is worse.
20K notes · View notes
affordable-publishing · 6 months
Text
Introduction to General, Organic, and Biochemistry 10th Edition by Morris Hein, Scott Pattison, Susan Arena
Tumblr media
1 note · View note
chemistryspace · 7 months
Text
0 notes
Text
Workaholics Anonymous 
Science Major: Man, I sure wish I had time to enjoy college but I have so much studying and homework to do. At least I'll get an easy high paying job after, right?
Physicist: I think I have a pretty good work life balance (does not, actually) and I think my grad students should have the same work life balance (which is not having that)
Astronomer: I work *about 40 hour weeks, but sometimes there are hours are in the middle of the night 'cause, y'know, stars. But who needs a consistent sleep schedule, really? Not me. I got Redbull.
Geologist: Sometimes I get to spend 15 hours a day wandering through the desert in severe weather conditions looking for cool rocks! also I have to like survey the land or whatever so I can get money
Chemist: Oh, you know, my PI only lets me see my family at night for dinner, then I have to come back and sleep in the lab, but overall I’d say I’m not too stressed.
Physician: Well, I had to work really hard, so why shouldn't everyone else have to work even harder? I'm sure the patients could only benefit from everyone being sleep deprived.
Biologist: I work so much I don’t even remember the last time I wasn’t working.
Science Major: huh?
Biologist: I MUST OBSERVE THE CRAB AT ALL TIMES. I OBSERVE THE CRAB EVEN AS WE SPEAK. IF I DO NOT PUBLISH 60 PAPERS ON CRAB BEHAVIOR BY NEXT YEAR MY COLLEAGUES WILL SENSE MY WEAKNESS AND DEVOUR ME ALIVE, LIKE A PACK OF STARVING CRABS
Computer Scientist: Um… I work from home for at most 8 hours a day then play video games
Biologist: *licks lips*
Computer Scientist (Game Dev): I would murder you if I wasn't so... oh there I go- *passes out from exhaustion (hasn't slept or touched grass in five years)*
593 notes · View notes
chemblrish · 22 days
Text
Tumblr media Tumblr media
7 April 2024
I still don't know how I managed to power through ~200 ochem problems for the upcoming test but I have to say I'm impressed
364 notes · View notes
alaynestcnes · 1 month
Text
Tumblr media
have to remind myself this isn’t an edit sometimes like they really just did that. freaks
108 notes · View notes
cuntbrow · 3 months
Text
Tumblr media
118 notes · View notes
er-cryptid · 4 months
Text
Chemistry Notes (Oct. 2023)
Full Notes:
Activating Lipid Synthesis
Activator vs Repressor Diagram
Alpha Decay Diagram
Calculating Formula Mass Ex. 1
Lewis Structure Ex. 3
Moles of Product Ex. 1
.
Note Cards:
Oxaloacetate Derivatives
Oxyhemoglobin
Protein Phosphatases
Velocity of Forward Reaction
.
Patreon
37 notes · View notes
luzisahomosexual · 3 months
Text
The foxes just won another game. Neil waddles over to Andrew to celebrate using his racket cos he’s so exhausted. When he gets there, he smiles at him before falling to the floor. Without a word, Andrew sits down in front of him. They both sit there silently, staring into each others eyes with their foreheads pressed together.
And that’s how the press and fans started speculating about their relationship😋
119 notes · View notes
2700k-moogie · 5 months
Text
Tumblr media
Milk ref sheet done yaHOOOOOOOOOOO lookit my big beautiful baby they filled with joy and happiness
110 notes · View notes
gottalottarocks · 12 days
Text
You guys have probably heard that the EPA just set new Maximum Contaminant Levels (MCLs) for the first time in decades for PFAS, which is BIG news in the industry, but not a surprise. I've been in meetings for months hearing about how new PFAS regulations were in the works, and the consensus in the environmental sector is that it's long overdue. But for the rest of you who've never heard of PFAS before I can break down what the big issues are and why they've taken so long to address.
Tumblr media
^stolen from pubchem
So PFAS stands for per- and poly- flouroalkyl substances, and it's not one chemical compound, but an entire class of thousands of chemicals that have these chains of Carbon and Flourine atoms. For anybody who doesn't have a chem background fluorine is a nasty atom, it has seven electrons in its valence shell and it will do anything to fill it up to eight, creating incredibly strong bonds.
So you have really strong C-F bonds and these chains of C and F atoms are hydrophobic, which means these compounds are durable and water resistant, which makes them great for all sorts of industrial uses. And we've used them in everything: clothing, fast food wrappers, paints, solar panels, and non-stick pans just to start.
Unfortunately, these wonder chemicals are PBTM- Persistent, Bioaccumulative, Toxic, and Mobile. They don't break down, they build up in the food chain, they have adverse health effects, and even though C-F chains are hydrophobic, additional compounds connected to them can make them soluble in water (so they're in our drinking water). We're starting to realize PFAS can raise cholesterol, inhibit immune response, interfere with your thyroid (part of your hormonal system), cause liver toxicity, is linked to cancer, and more!
At this point you're probably starting to think wtf, how did we allow the continued widespread use of these chemicals? Well, we have phased out quite a few high profile PFAS compounds including PFOA and PFOS, but we still want to regulate and test for them in our drinking water. While PFAS is in many different products, the biggest sources of contamination are industrial runoff, areas where fire fighting foams were tested and used, landfills that leach out PFAS into the surrounding area, and wastewater treatment plants. So don't feel too stressed about eating microwave popcorn or using nail polish.
The reason these regulations took so long to implement was because of how difficult it was to connect such small amounts of PFAS with health hazards. The level of concern for PFAS is extremely low- in the ppt (parts per trillion) range. When I sample for contaminants I'm generally testing in the ppm range and higher, for PFAS we're looking an entire scale lower. We literally did not have the technology before the last few decades to detect PFAS in the ppt range in water, let alone study their effects (you can't just impose massive regulations without any proof to back it up).
States that currently have PFAS limits in drinking water have mostly capped it in the 10-70 ppt range. The new MCLs are 4-10 ppt for the six PFAS compounds the EPA addressed, which are six of the most common and most studied PFAS compounds. Most of the bitching I've seen is about how much this will cost and that the new limits are too low. The conservative take on this is that there isn't enough evidence to support such low MCLs, although most people in the environmental industry feel that more and more research keeps coming out and will keep coming out (remember studying such small amounts of anything is difficult) to support these levels. On the other side of the spectrum, there's the consensus that this is just the beginning and that more and more regulations on PFAS will be needed.
And they're in the works! I saw a proposed rule by the EPA that would ban 12 (already defunct) PFAS substances from pesticides. It wouldn't really affect the current manufacturing of pesticides, but it would be a safeguard from letting them back into the manufacturing process in case of a conservative presidency.
If you're still here I'd like to end on the note that as our science improves, our understanding of how we have impacted the environment and our health will improve. We are constantly going to find out about the adverse effects of new chemicals or things that we may not even produce anymore, and that's a good thing. Over time we are going to make the world a healthier and safer place.
62 notes · View notes
coyoxxtl · 18 days
Text
people joke about fandom shippers creating entire relationship dynamics out of two guys standing next to each other but have y’all ever seen fandom claim a ship has no chemistry and when you actually see this ship in canon it’s like, Fireworks
59 notes · View notes