Nonpolar Puns

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So since gases like O2 can rapidly diffuse across the plasma membrane does that if I theoretically shot a beam of O2 gas at my hand would it travel all the at through my hand? If not what would stop it?

So I figured it would go through facilitated diffusion only but I have a question that says small ones can also go through simple diffusion

I guess the "why" is partly the convenience of being able to use either plug orientation, but that still leaves the "how" and perhaps more "whies."

I have never taken a biology class and jumped straight into ap bio this year. I was doing well in chem and jump into ap chem and was told to take this class as well. Admittedly I am confused on a few aspects as reading through some things didn't really help me. Are there any good guides or youtube videos that can explain a bit more on concepts?

I have 1500 heavenly blue MG seeds. I already ground them up, soaked in zippo lighter fluid, evaporated the fluid from the seed mush and now have it soaking in isopropyl. What i am wondering is after I discard the seed mush in a couple daya, if i were to put the jar of extract in the freezer and the LSA stick to the bottom seperated from the isopropyl? Say like a dmt extract

Is there a specific reason that chemists like to use hexane as a nonpolar solvent instead of some other aliphatic unsaturated hydrocarbon like pentane or septane? Does it have to do with the price or ways to acquire/synthesize these solvents? Or perhaps with toxicity or volatility?

I've been thinking about this for a while, and looking it up does not really help. We are all taught that oil and water repel because oil is nonpolar and water is polar. Thats something you can see with water on a hydrophobic surface; the water seems to "float" as if it were being repeled by the surface. Though surely they don't actually repel, right? As I understand it, these things separate due to the interactions with their own being much stronger than the interactions with the other, and they will bead up into unbroken membranes due to their surface tension. The molecules on these surfaces are aligned in a way to minimize external surface area so that they maximize the number of molecules having more favorable interactions.

I imagine the surface between a bead of water and a bead of oil being similar to two boba balls -- each has a well defined surface membrane. They aren't engulfed to form a bigger ball due to the strength of their membranes, in addition to unfavorable mixing. However, they don't just shoot away when they come into contact. More basic explanations (which are all I can find online) liken these surfaces to magnets, with them being like charges that will exert repulsive forces on eachother, but this explanation sucks since the nonpolar surface isn't charged.

Since they can't actually have repulsive forces, I am led to believe that the interactions at the surfaces are just very weak induced dipoles, and the forces of gravity or energy from slight motion are enough to easily break these IMFs and cause the "repulsion" that we see. I am sure this is an obvious and common idea of how this works, but it's not like I can find an explanation of that depth anywhere on the internet and that's absolutely infuriating. This is such a fundamental concept, though I have never actually had this confirmed-- can anyone help me out?

Is it because they're aromatic amino acids?

I understand that cationic surfactants such as cetrimonium chloride and other cationic molecules like amodimethicone can attach onto hair because of their positive charge, but I'm confused as to how nonpolar agents like dimethicone are able to stay on the hair. My understanding is that conditioners are essentially an emulsion, and I'm imagining that something nonpolar would be more likely to rinse off rather than stay on the hair. I assume part of the reason is that the surface of the hair isn't perfectly smooth, so nonpolar things can resist being washed off if they're deposited in a "crevice," but so many people complain about dimethicone building up - is their cohesion strong enough to resist being washed off? Can someone please offer some insight? Thank you!

Edit: I feel like I didn't word this well enough before - does anyone know the mechanics behind how the nonpolar ingredients come out of the emulsion and instead stay on the hair, since conditioners have things like fatty alcohols present as you're rinsing them off? Again, thank you!

Systematically synthesized new noncentrosymmetric nonpolar chiral coordination polymers exhibit unusually strong second-harmonic generation efficiencies attributable to the synergistic effect of polarizable metal cations and increased hyperpolarizability in the donor–acceptor system originating from the robust hydrogen bonding in the coordinated linkers. Details can be found in the Communication by Joonhyuk Kee and Kang Min Ok (DOI: 10.1002/anie.202106812).

https://ift.tt/3gPMtbW

Isn't chloroform and ethyl acetate polar? On UEarth, it says they are nonpolar solvents?

Four chiral coordination polymers (CPs), M[( S , S )-C 14 H 14 N 2 O 6 ] and M[( R , R )-C 14 H 14 N 2 O 6 ] (M = Zn or Cd), have been exclusively synthesized in high yields with the aid of newly designed chiral ligand under hydrothermal condition. The CPs crystallizing in the orthorhombic nonpolar space group, C 222 1 , reveal three-dimensional framework structures composed of MO 4 tetrahedra and the corresponding homochiral linkers. Powder second-harmonic generation (SHG) measurements indicate that the nonpolar CPs reveal very strong SHG efficiency of ca. 5–9 times that of KH 2 PO 4 and exhibit type-I phase-matching behavior. Density functional theory calculations suggest that the unusually large SHG efficiency found from the nonpolar CPs should be attributable to the synergistic effect of polarizable metal cations and enhanced hyperpolarizability in the donor–acceptor system originating from the hydrogen bonding in the coordinated linkers.

https://ift.tt/3cnBbu4

Hi everyone, this is my first post here. I have 2 questions regarding the production of DMT:

1. What can be used as the nonpolar solvent? If naphtha, Zippo lighter fluid and such products were unavailable what could be used? Could fuel/car gasoline be used? Preferably something that can be found outside the US, in Europe.

2. Source of the MHRB? Is it ordered online and shipped, or is it bought in flower stores and such? Is it worthwhile growing your own Mimosa?

Even if it,mean't those compounds had be vacuum distilled off, I'm just curious if anyone has tried, since no one has really asked this question, I mean naphtha is a mixture of hydrocarbons too, I know some compounds in WD - 40 make it troublesome, like I can't find it's freezing point, what do you guys think?

I understand that STN is nonpolar and this is why the correct answer is C (or 3 in the case of how I copied down the question). I selected answer 2 because I thought the size of the molecule would prevent it from passing through even if it was nonpolar. I always understood that only small and nonpolar molecules could use simple diffusion.

So do all nonpolar molecules pass through the membrane, no matter the size?

21: Considering the structure of STN, what is the most likely mechanism for its entry into the cell?

1. Active transport
2. Receptor mediated endocytosis
3. Diffusion directly through the membrane
4. Passage through an ion channel

https://preview.redd.it/sqzze3z65e961.png?width=563&format=png&auto=webp&s=7fa7462173eceb05597e2ef1e3b67ebf74f371d0

I've looked all over the internet for this, and I can't find any answers: is nitrite polar or nonpolar? It's got nonpolar bonds but a non-geometrically symmetrical structure...so I'm lost on this.

Edit: It's an ion, so it's polar

right???

https://preview.redd.it/hzpql5w9otb41.jpg?width=4032&format=pjpg&auto=webp&s=50baea4d96869cf09d2c5c09239acdc12d5012db

I'm trying to put two and two together here. How does alcohol even help here, like the type we put in hand sanitizers (60% or more)?

Isn't it nonpolar because the OH- cancel? I have an anki card the explains exactly why this happens but I can't find it right now.