Random help on a train
I am an ex chemist who hasn’t practiced in 20 years . I got my masters back in the 90s and work in it now(long story) I was riding the train and noticed a young student studying sn2 reactions. I couldn’t help myself and asked her about it - she was on the way to an exam and needed help with grignard reactions - frankly I was surprised at how much I remembered about it and hopefully the young lady gets a couple of extra points on her exam. God I miss it. Organic chemistry is such a cool view of the world.
https://redd.it/1npqtvr
@r_chemistry
As a new chem student I want to beat whoever made Fahrenheit and the Imperial system with hammers
I know science gets harder and more complex as you continue on, but I just converted Kelvin to Fahrenheit and immediately realized why that one NASA rocket blew up. For YEARS the rest of the world has had to deal with random goofy numbers that the US made because it wanted to be different. Wtf do you mean:
1.8(Kelvin-273.15) +32 =Fahrenheit , know what to do to get Kelvin to Celsius??? :
Kelvin - 273.15 = Celsius.
1 gallon is 4 quarts, but it's also 3.7854 Liters??? If you're gonna make it so similar just make 1 quart = 1 liter.
I completely understand all hate that the US gets if this what converting our units is like, all other hate the US gets stems from this and this alone
https://redd.it/1npm9u5
@r_chemistry
I love characterization and hate synthesis
I have come to realize that characterization makes me feel alive because I get to test materials and use my brain to analyze trends and other interesting things. I hate synthesis. It drains me and literally makes me depressed. This has been proven to me again this week. I paused doing synthesis and I am now focussing on a side project which involves formulation and characterization to optimize material properties. I feel happy and interested, and now I look forward to going to work. I feel like this is my calling.
Does anybody else feel this way?
https://redd.it/1nphe6c
@r_chemistry
For all the chemistry graduates, what career did you end up in?
Hi reddit, I did BSc in Chemistry, but I dont want to work in a complete lab setting role for the rest of my life. I like coding, found that fun in school. I wanted to get into IT/Comp sci/AI side/Data analytics.
Anyone here done the same? I would love some guidance
https://redd.it/1npdjt5
@r_chemistry
is it possible to overdose/die instantly on sulfuric acid/drain deblocker?
no need to worry i just got into a argument with a friend and i want to know the truth!! she claims it can kill in 5 minutes but for me thats insane
https://redd.it/1np9af1
@r_chemistry
Molisch Test
https://redd.it/1np63ro
@r_chemistry
SODIUM CYANATE FROM UREA
https://redd.it/1notah3
@r_chemistry
Vintage Mercury Bottle, more pics
https://redd.it/1np0c1o
@r_chemistry
Formation of copper II chloride dihydrate crystals :)
https://redd.it/1noxlat
@r_chemistry
Scam alert: HONC Gas
HONC Gas is a new Indian company specialized in hydrogen stove for industries and home cooking. Product is marketed with water as main input and hiding the fact that more electricity is required than the conventional electric stove.
I see lot of paid promotion in internet and TV channels. I want the public aware about this scam.
https://redd.it/1nou2jn
@r_chemistry
Help on fume hood project
Lately I have been really interested in chemistry, and wanted to pursue this passion safely and responsibly, so aside from the usual home experiments I wanted to do something new safely. That’s why along with other PPE I have decided to acquire a fume hood. However seeing prices on those things I had gotten quite discouraged. So an idea came through my mind, which I am hoping is not irresponsible, since I also have quite some expertise in electrical engineering and building things I wanted to make a hood myself. However I know that a fume hood is far from just a fan in a box. I wanted to know if it’s a realistic idea to try and build one myself (with laminar flow and eventually basic scrubbers) or if I should just search for a used one for good money. (if my idea is possible could you give some advices on fume hood engineering.)
https://redd.it/1nos344
@r_chemistry
Just making sure
https://redd.it/1nooxi1
@r_chemistry
Why am I struggling in chem
I’m back to college after taking multiple gap years due to health issues and last semester I took a prerequisite chem class that I passed with ease but this semester I’m struggling but we’re basically learning the same thing. Did I just forget the material? Over thinking? Not studying enough? Or can it be the teaching method since last semester we would have a mini quiz every class day with multiple assignments and this semester the professor is not very strict with assignments having long due dates and it’s just many slide presentations.
https://redd.it/1noms60
@r_chemistry
Attempting a copper plating via electrolysis of copper acetate :D I’m so excited
https://redd.it/1noieww
@r_chemistry
How native English speakers learn the periodic table?
In my native language, the periodic table shows both the full element name and element symbol. For example, hydrogen-H, in the table, hydrogen on top and H below. Right now, I find it difficult to memorize the English names of the elements. And the periodic tables I can find usually only display the element symbols. So I’m curious how do the native English speakers connect the element names with the symbols when they first learn them?
https://redd.it/1no84qr
@r_chemistry
ID Help: Frey Scientific Becquerel Materials Kit
https://redd.it/1nppix1
@r_chemistry
I’ve been running pyrolysis oil through a vacuum filtration setup and the sand core of the filter head is stained black. Any technique for restoring it?
https://redd.it/1nphzmk
@r_chemistry
please help me make sense of a strange observation during a Benzil synthesis
https://redd.it/1npcx32
@r_chemistry
Burette Reading
Hello! When performing titrations, we use a 50 mL burette. However, some of the experiments we use require us to 70 mL of our titrant. When you are dispensing the first 50 mL of the titrant, do you go past the 50 mL mark and just dispense all of the titrant? Or, do you stop at the 50 mL mark?
https://preview.redd.it/zkkeykrcy3rf1.png?width=354&format=png&auto=webp&s=30bd7401f7fded9832b1001ba66ce719467c1ab6
(Would you dispense the titrant in the indicated space?)
https://redd.it/1npb241
@r_chemistry
Looking to gain lab experience
I’ve been studying chemistry as a hobby for sometime as it interests me, I usually use books to study the theory but I am also interested in learning the practical side of it and gain experience working in a lab. Now I can’t afford to invest 3 years into an undergrad degree so what’s my best bet?
https://redd.it/1np500f
@r_chemistry
I need a super quick help!
https://redd.it/1np509l
@r_chemistry
What do you think about my molecule of water ? ( H2O)
https://redd.it/1nozwk7
@r_chemistry
I think i broke our viscometer
https://redd.it/1nowru9
@r_chemistry
building chemical models in vr
https://redd.it/1nou3iu
@r_chemistry
Help with Sulfide Stock
I keep making sulfide stock for waste water sulfide testing using NaS and deionized water dosed with NaOH. It gets stored at 4C in a fridge. I have to remake it every 2 weeks because too much of it oxidizes into sulfate. Is there a way to prevent this from happening or is there a way to precipitate the sulfate out with impacting the sulfide (i.e. forming H2S)?
https://redd.it/1norjer
@r_chemistry
Scared to use dimethyl sulfate for methylation reactions
I am working on methylation and I need to use agents such as methyl iodide and dimethyl sulfate, which are really toxic. I've used methyl iodide a few times and I'm not that scared anymore, but having to use dimethyl sulfate freaks me out. I haven't done it before and the words "fatal if inhaled" in the SDS have essentially freaked me out. I work under the fume hood and wear nitrile gloves too. Another part I'm afraid of is using a needle and syringe to transfer the dimethyl sulfate into my round bottom flask. I am planning to skip using this chemical because I am worried. What if I accidentally inhale some or prick myself? Am I overreacting?
https://redd.it/1nompwh
@r_chemistry
Anyone on Oahu, Looking for some used lab glass?
I dont know if this is allowed on here. Im moving and have a bunch of lab glass. Separatory funnels, a distillation kit with a set up for fractional distillation, heating mantels, beakers, test tubes, vacuum filter. etc.
https://redd.it/1nol6f9
@r_chemistry
Hobby Chemist
I am very much interested in organic chemistry and doing synthesising stuff. I already have knowledge of general organic chemistry and basic reaction mechanisms but not much practical experience. I was wondering how I should go about learning more like should I practice synthesising simpler stuff n learning the mechanism behind it or delve deeper into theory with graduate level books. I already have some basic equipment at home and I can afford to get some basic stuff.
https://redd.it/1nofbww
@r_chemistry
Why do too many neutrons make the nucleus unstable?
Hi, I'm a grade 11 student I have a test on radiation on Thursday. I have a question about unstable nuclei.
Basically, my chemistry gave me a worksheet on radiation and there's a note in it that says "When a nucleus contains too many neutrons, the strong nuclear force becomes much greater than the electrostatic force making the nucleus unstable."
This really confused me because over the summer I wrote some notes on grade 11 chemistry and I wrote about radiation.
I wrote that the strong nuclear force keeps the nucleus together. The strong nuclear force is stronger than the electrostatic force, but it is a short ranged force. If there are too many particles, the nucleus is too big, eventually electric force will overpower the strong nuclear force and that's what makes it unstable.
I know that electrostatic force is only between the protons and electrons, and in the larger nuclei the protons repel.
I'm wondering if what my teacher has on the worksheet is right and I'm just reading it wrong. But I'm pretty sure the strong nuclear force should be weaker than the electrostatic force in larger elements.
For the most part I'm wondering why too many neutrons make the nucleus of an atomic unstable. The nucleus has no charge.
I tried searching it up, but the explanations are quite advanced and I don't really understand. I want to understand this so that I can do well on my test.
https://redd.it/1no8son
@r_chemistry
