r/chemhelp

I’m a metallurgical engineer; I’m 25 years old. I don’t like my field of study, and I have no work experience. My university offered a certificate program in Instrumental Techniques for Chemical Analysis, which I completed. I got to work with chemists and chemical engineers, and I loved it—I finished the program without any problems. I want to work in that field. I’ve sent out thousands of resumes and only had one interview, but they won’t hire me because I’m not a chemist or a chemical engineer. It’s been a year and a half like this, and I’ve been feeling pretty depressed. A university in another city in my country is offering a specialization in Instrumental Chemical Analysis, and I’m interested in pursuing it to see if it will improve my chances of working in that field. However, I don’t have any work experience, and I’m not a chemist—though I would earn a specialist degree in instrumental chemical analysis. Do you think it’s worth pursuing in my current situation, and could I find work in that field?

I've searched for resources, but everything I could find led to the hill system but I was marked wrong for putting phosphorus after oxygen. I saw that the number of atoms was supposed to be ascending, but what I understood was it was for a second step in ordering of the same element like C2 is before C3. Is it something about how oxygen is always at the end of a formula or it's some sort of oxide formula?

I've never heard of an order of chemical symbols before so please don't use overly technical terms because it will go over my head, thank you :) The picture shows the correct answer, but my wrong answer had phosphorus and oxygen switched

https://preview.redd.it/rv3jdkdz0ekh1.png?width=708&format=png&auto=webp&s=754777ea529157e481ab8eb372c7f740f9843b8e

https://preview.redd.it/kv6uujw0pdkh1.png?width=1485&format=png&auto=webp&s=55319820762c402361e491151e76ad900b50237d

Hi, I'm writing a lab report about Iodine Clock Reaction using sodium thiosulfate, hydrogen peroxide, sulfuric acid, sodium iodide, and starch indicator. As part of my report, I need to compare my experimental value with literature value. I've searched some sources on Google, but they did not use the reactants I used.... Please help...

https://preview.redd.it/shxiyreo9ckh1.png?width=559&format=png&auto=webp&s=89ae90b17b9ed1116d7a15d5ac5837c51a273aca

1:1 ratio and the concentration is 10^-9M of KOH.

for 0.01 moles of benzoic acid, you would need 0.01 moles of KOH, which would require 10000000 litres not 1000, unless maybe we're talking about acid instead...

Salut!
Est ce que quelqu’un vend ce manuel : Girouard Stéphane, Marrano Claudio et Lapierre Danielle. Chimie organique : 3ᵉ édition. Montréal : Chenelière Éducation, 2025. ISBN 978-2765080862
J’en ai besoin au plus tôt et il est en vente nulle part(ni Amazon, ni les librairies locales) et il est impossible à trouver dans les bibliothèques de Montréal.

If this is not within the spirit of this sub then I apologize and can try to take it elsewhere.

I have several partially or fully empty and unopened coca cola cans. They were in a 24-pack cardboard box that I placed on the concrete floor of my garage next to a tractor battery. After 8 months, I went to bring the 24 pack inside and noticed that there was residue on the sides and bottom of the box, and the entire bottom row of coca cola cans were either fully empty or partially empty, but none of the cans had been breached and they could be squeezed to increase the air pressure in the can.

Any theories (or better yet, solid explanations) for how/why this occurred?

For the future, I'm not going to store coke near tractor batteries, but I'd love to know the science behind the phenomenon. Thanks so much!

What volume of 0.200M KOH is required to react with 125mL of 0.250M H3PO4 in order to produce a solution of K2HPO4

I am panicking a little bit because I was supposed to start my Intro to Chem class today (college level) but only realized this evening that I signed up for an 8 week mini that begins in September. It is too late to switch it and my job paid for it so it’s complicated to drop it. This will be my second attempt to take chemistry and I did not do well the first time and withdrew.

What materials can I begin reviewing while I wait for September? I remember the last time I took Intro to Chem, I struggled the hardest with the math components but can’t remember what the math concepts were called to start googling them and working on it. Or maybe if anyone knows a workbook I can buy? Thank you!

Hi everyone! I'm a chemistry enthusiast and i like to do research. I have ADHD and my current hyper fixation is Cyanide. (english is also not my first language so sorry if i make a mistake lol)

So, i was doing research and i found out about Lithium Cyanide and a process called Cyanation.
I have a few questions and i hope someone gets to answer them! I didn't really quite understood some things from google so i hope that a person explaining makes it more simple, lol.

1. What can we do with Lithium cyanide? Is there any practical use or is it just a toxic compound?
2. How do you achieve Lithium Cyanide?
3. Is there a difference between Nitril and cyanide?
4. How do you achieve Cyanation?
5. Does lithium and cyanide have anything in common besides this combination?

I hope these aren't dumb questions, lol. Thanks in advance 🤍

I'm taking organic chemistry 2 this semester, and I'm having a ton of anxiety because I really struggled in organic 1. I took the class 5 times total (I had a lot of personal struggles at the time as well), and just passed this summer with a B-. I felt like I had a really good grasp at the first half, but when it came to reactions I felt completely lost--especially with synthesis and retrosynthesis reactions. I felt like I knew reactions independently, their features, and could perform them if I was told what reaction it was, but as soon as I was forced to choose how to make something I felt like everything I understood was gone.

From my understanding ochem 2 is just going to be reactions, and they get increasingly complex. What do I do? Are there any resources that were very helpful, and what concepts should I try to understand before walking in?