I am wondering if there are generally accepted ways of getting the critical constants (acentric factor, critical pressure and temperature) of a substance from a simulation of some sort (i.e. quantum chemistry) [more inside]
Why is my lemoncello cloudy? When I combine the simple sugar and the lemon infused alcohol, both of which are very transparent (although one is a luminous yellow) the resulting mixture becomes instantly cloudy. Can anyone explain why? For bonus points can you suggest a way to minimize this? [more inside]
How can I make myself sound attractive to a local microbrewery given my qualifications? [more inside]
What might cause a marked spike in my anxiety/depression symptoms from 5pm-8pm (almost to the minute)? In terms of body chemistry, sleep/wake cycle, hormones, etc what does my body have going on during this time? [more inside]
Can one sell a chemical over the internet if its not a precursor to meth or an ingredient in explosives? What regulatory and legal issues are there? [more inside]
What makes lemon bars tart? [more inside]
My stovetop espresso maker has a small leak. I don't think returning it will help me. Are there any recipes for food-safe 'stop leak' compounds? [more inside]
What would you like to read about Chemistry (and maybe science in general) from a non-scientist POV? [more inside]
Does compressed oxygen burn? Or do only objects IN compressed oxygen burn? Please settle this dinnertime discussion...The hubs and the daughter's boyfriend need to be told which one of them is right. Thanks!
Teach me chemistry! No, not the social kind, the science-y kind. [more inside]
Is it detrimental to date a psychiatrist (not my own) after being in an emotionally abusive relationship? [more inside]
How come sulphur hexaflouride is an extremely potent greenhouse gas when it's much heavier than air? [more inside]
I know *what* an azeotrope is, but I don't really know *why* an azeotrope happens. Please enlighten me. [more inside]
What is the best modelling software to construct hexa- and higher ordered structures of membrane proteins if you've got a monomer structure? [more inside]
In a few weeks I'll be giving a talk to my research group about chemical safety. Please help me find stories, videos, and photos to make it interesting, awe-inspiring, and informative! [more inside]
I am getting really frustrated with my flaky chemistry professor. I don't want to complain about her mistakes to the Dean because I think she's a nice person and has some life circumstances I wouldn't wish on anyone (illness of her own and single caregiver for extremely ill and challenged child). How do I get over my frustration with her, stop resenting her, and also stop feeling upset and anxious when I study? [more inside]
I have always found skunk odor and roses to share similar scent. In my opinion, it's strikingly similar, but almost nobody agrees with me. What chemical, if any, do they have in common? [more inside]
Hydrogen peroxide + baking soda = ???? [more inside]
I'm looking for the chemistry version of A Brief History of Time. Does it exist? [more inside]
Help me understand hair care chemistry. When I look at the list of ingredients on bottles of conditioner, what ingredients should I avoid. I can't stand the 'waxy' feeling I get from some conditioners. My old favorite standby conditioner changed formulas recently and it now has the dreaded waxy ickiness. NOT looking for specific product recommendations, only for ingredients to avoid or possibly ingredients to look for. [more inside]
Do you know of resources for understanding Density Functional Theory for Inorganic Chemists? [more inside]
I'm trying to find coffee mugs that have individual elements on their sides for a birthday gift, but have not been able to find them. Can you help? [more inside]
Quick chemistry question - do i need to dilute this or is it already diluted [more inside]
I can't get the phrase "Nonoxyl-1,5-Triethylamine" out of my head. Obviously, it is an IUPAC name for an organic chemical, but AP Chemistry was a long time ago and I can't quite map out if it's valid— my hunch is "no." Is there a notable chemical that has a similar name that I might be half-remembering? More importantly, is there a website where I can look things like this up in the future?
If you were to combine 1 cup of skim milk and 1 cup of 2% milk, does that essentially give you two cups of 1% milk? [more inside]
I'm giving a presentation next month need a funny joke about the difference between chemists/scientists and engineers (because I'm an engineer doing chemistry) [more inside]
"Silicon based life" is a perennial sci-fi trope - I guess because silicon and carbon share similar-ish valency properties. Has anyone actually tried to flesh out what a silicon chemistry complex enough to support protein analogues would look like? Or more broadly, has anyone proposed schemata for complex, self-replicating chemistries that differ substantially from those we know?
Looking for a chart or table that broadly summarizes/compares the relative bond energies of the most common intramolecular bonds found in organic molecules (think single and double bonds among C, H, O, N, and maybe S too). [more inside]
What's the best review/refresher book for high-school level chemistry? [more inside]
Na2CO3·1.5H2O2 + NaClO + H2O --> ??? Or, what actually happens when you mix bleach and oxyclean? [more inside]
What's this molecule? An antibiotic of some kind, I think? I've tried Google'ing based on its IUPAC name, no luck.
Should I use warm or cool water when I fill an ice cube tray to freeze? [more inside]
What's the best software for prepping for college-level hard sciences? [more inside]
There's a hair product my friends and I love that's been discontinued. Do you know of any companies or chemists that can duplicate it using the ingredients list on the back of the container for a reasonable price? Is there a minimum volume? Can I sell the extra on Ebay? Is this possible or just a pipe dream?
Please explain the stereochemistry of this reaction. [more inside]
Would a drug-manufacturing machine be legal? [more inside]
Why does stainless steel have such strange properties? [more inside]
what's the difference between speed and ice?
How long does it take you to know you want to "date" a first date from online? Is there more i can be doing to give chemistry a try? [more inside]
I am looking for a torch to melt pyrex (borosilicate glass). [more inside]
What kinds of simple, safe chemical reactions can I do to really wow a group of 6th graders? [more inside]
BookFilter: I'm looking for a book for my (26-year-old) brother on what I'd call "kitchen chemistry"; i.e. cool experiments that you can do at home just for the sake of making something awesome happen. [more inside]
I went from loving my degree to completely meh about it...what now? [more inside]
I am planning to go get my PhD in chemistry and I am waiting to hear back from schools. I have already been accepted to 3 schools (one in the top 10), however, I really like some of the faculty at one located in the 30s in the rankings. How important are the rankings and will they have a big affect on my career?
What are the best academic journals in each field? [more inside]
How can Prelief react with food acid but not with stomach acid? [more inside]
I'm throwing a chemistry themed birthday party. I need help generating some awesome ideas. [more inside]
Help me pass general chemistry the quick-and-dirty way. [more inside]
What is the best way to move hot air? Would it be blowing air across the heat source (ex: wood stove) or suck the air away from the heat source? [more inside]
ToxicWasteFilter: How do I clean up a copper sulfate spill? [more inside]