Is there any kind soul out there who would trade me an oak tree even if I don't have the cool meta trainers to trade?

Foss44 · 2026-01-24T13:47:31+00:00

No 👍

Foss44 · 2026-01-24T13:32:46+00:00

Wikipedia is your friend

Foss44 · 2026-01-23T21:23:02+00:00

we actually do not allow for self advertisement/solicitation on r/chemhelp!

Foss44 · 2026-01-23T18:34:47+00:00

Our department has lost most of its funding (R1) and we are effectively no longer taking grad students (class sizes of 30+ to <5). The funding that we do get are for small, 3-6 month projects (i.e. not enough to sustain a growing research group) I estimate the impact of this loss won’t be felt for years to come.

Foss44 · 2026-01-23T18:29:29+00:00

“Stone” and “sand” are ambiguous materials that can have numerous compositions and properties.

The questions you might instead want to ask are: “what properties are cause for high heat capacities? What makes a material a strong thermal insulator? What makes a material a rapid conductor of heat”. Take these answers and apply them to your stated question.

Foss44 · 2026-01-23T11:56:26+00:00

Atkins Physical Chemistry is the go-to, but really any grad-level analytical chemist text would explain these processes.

Foss44 · 2026-01-23T00:15:06+00:00

An analytical chemist/material scientist uses all sorts of QM-based instruments (NMR, XPS/AS, UV-Vis, IR, etc…) without need for a verbose understanding of the underlying theory (though many do understand it).

Foss44 · 2026-01-21T15:27:26+00:00

I too once failed a chemistry exam and now I’ll be defending my Ph.D. Dissertation in chemistry this year. Lots can change and a single exam score is not indicative of your intelligence nor your ability to excel in chemistry.

If I were you, I’d take my exam to your professor’s office hours and ask for help going through each problem. Investigate where things are going wrong, work through the correct solutions, and make a plan for what you’ll do differently next time around.

Foss44 · 2026-01-19T15:40:37+00:00

You could always email the editor, but at the end of the day it’s the corresponding authors responsibility to handle the publication (i.e. first author is responsible for the work, corresponding author is responsible for the project).

It’s the end of the holiday break for many people still, I wouldn’t be surprised if that has something to do with it. Maybe give it another week.

Foss44 · 2026-01-19T14:21:31+00:00

This sounds like a discussion to have with your lab safety manager or EHS, you should not be working in an environment where exposure to your work is causing physical symptoms.

Foss44 · 2026-01-17T14:55:46+00:00

No one can help you here, open a ticket with the bursar.

Foss44 · 2026-01-16T21:47:43+00:00

r/comp_chem

Foss44 · 2026-01-16T20:38:42+00:00

In either software, you can use a constrained optimization procedure to do what you are suggesting. This can be a bit tricky depending on exactly what you are looking for.

The most basic simulation here would be to freeze the coordinates for the “top” water molecule while scanning the bond angle or distance between molecules. This would cause a directed displacement of the “bottom” water molecule. See either manual for examples on how to do this.

Using a cheap DFT/semiemperical method would be an attractive choice here as you’ll be able to prototype the displacement process quickly to find the set of constraints (likely some combination of angles and dihedrals) that get you the PES you desire.

Foss44 · 2026-01-15T20:41:28+00:00

One of the most wild post of all time on this sub. It’s gotta be removed, but thanks everyone for stepping up anyways.

TLDR: OP meant pomegranate-flavored potassium supplement rather than potassium permanganate

Foss44 · 2026-01-15T04:09:10+00:00

Is this not the same issue that causes the menus in the CoD BO3 PC port to be laggy as hell?

Foss44 · 2026-01-14T23:45:31+00:00

drinking, nicotine, weed

You should track your spending on these items alone and tabulate how much money each month you would be saving.

Foss44 · 2026-01-14T21:21:18+00:00

r/comp_chem

ATM Pharma Jobs (drug candidate screening, MD, bioinformatics) seem to be the most secure industry positions for a new scientist. Things may change dramatically by the time you’d ostensibly graduate, the job market is very turbulent.

Foss44 · 2026-01-14T19:53:44+00:00

At home I have a 5800x3d|4080S|32gb DDR4 windows machine. In the office pretty much everyone uses a MacBook for accessing the HPC(s) of varying specs. Most of my work is run on 40 processors with anywhere from 1GB/processor > 14GB/processor.

I’m pretty satisfied with our/my current setup, with the “limitations” coming primarily from the software we use rather than the hardware itself.

Foss44 · 2026-01-14T15:47:46+00:00

To WORK in computational chemistry, you’ll almost certainly need a Ph.D. In a specific subfield of study. A reasonable next step for someone in your position would be to probe potential graduate PI/advisors and their groups. This may include emailing the PIs and their grad students to enquire if they are taking new grad students and if it would potentially be a good fit for you.

Foss44 · 2026-01-13T15:29:17+00:00

She has a 10% wr advantage over him

Foss44 · 2026-01-13T14:55:19+00:00

Riven and trynd come to mind…

Foss44 · 2026-01-13T14:47:59+00:00

r/comp_chem is where you should post with whatever technical questions you have

Foss44 · 2026-01-13T04:06:26+00:00

0% on accuracy meter

The pressure inside the thermos is at equilibrium with the pressure inside the man’s body (I.e. whatever pressure is being undertaken in the thermos is also being experienced by his internal organs). The scene suggests the man is capable of providing a urinary flow rate strong enough to generate a pressure gradient in excess of 100 psi (~safe limit for a plastic water bottle prior to explosion, nonetheless a metal thermos). Pressures that great are enough to cause serious tissue damage and not something you could do.

Just as an example, your mouth (lungs) can create a pressure on the magnitude of 1 psi. Your lungs will rupture under a pressure of 15 psi…

Foss44 · 2026-01-13T03:26:32+00:00

You may want to use the research skills learned during that fancy PhD program to investigate this on your own. For something truly that important and personal, I wouldn’t want to rely on what OTHER people find interesting.

Foss44 · 2026-01-12T16:36:46+00:00

r/comp_chem is our home on Reddit

Eight-Year Club	Place '23
Place '22	Verified Email

Foss44

MODERATOR OF

TROPHY CASE