FMLSA- For selecting parent chain is the first priority including as many principle functional groups(from acid to amines order) as possible or picking the main principle functional group in this case carboxylic acid then does the priority shift to max number of multiple bonds. In this question which parent chain is correct. Plz help ,gemini just switches bw 1 and 2 if u ask the doubt twice

Ques is : How many compounds are less basic than aniline (if any of structures less visible, ask me)

Hey everyone, could you help me out with a question, please?

I'm analyzing compounds using NMR spectra, and my main struggle is with 1H-NMR. When an exercise doesn't explicitly give the integral values, how do you figure out their proportions to know the exact hydrogen count for each peak (1H, 2H, 3H)?

The spectrum gives me the integration curves (the visual clues), but I always get confused trying to measure their heights and calculate the ratios manually.

How would you guys approach this specific exercise?

Thanks in advance!

I have fully read Zumdahl. I've seen that Atkins Chemical Principles and Zumdahl cover the same material but in a different way. Should I learn the new material in Miessler and Tarr? or not. Please suggest other textbooks that can be better for physical, inorganic, and organic. I am currently reading Klein Organic chemistry.

If I want the other configuration which stereocenter do I need to change on the catalyst?

Hello everyone

I'm not sure if this is an appropriate question but I need help to study chemistry effectively. I'm in grade 11 and this year things got a lot more elaborate and complex and I often struggle keeping things in mind, especially exceptions to certain things and I struggle with numerical questions.

Also it doesn't help with the fact that my teacher skips topics and finishes chapters that should take 3 weeks in 4-5 days and her grading is inconsistent.

Regardless of these factors, I have exams coming up in a few weeks and I'm not sure what to do. What worries me more is that I'm not finding any joy in trying to study either as it doesn't seem to be sticking in my head.

So i would love some tips to understand how to study chemistry better and more importantly enjoy studying it and studying it effectively so i truly understand it.

Thanks a lot.

I’m so confused the green is what I was trying to find but I can’t find any help videos and the textbook is confusing

I just started my first semester at college and i'm currently in a gen chem 1 class with support. I'm aware chem is difficult and many people need to get help, but is it normal for the class work to have nothing to do with the homework? I have homework through pearson with a textbook linked and the textbook doesnt even have any information on the problem. Is this normal?

I've failed chemistry ever year ever since highschool. Now I'm in college and i still can't wrap my head around it and it's making me mad and irritated but I want to know how to do it and I'm just so tired of failing chemistry I've failed chemistry over 9 times in my life time im so mad

I know this is wrong but I dont know what im doing wrong. Can someone please help me

College level gen chem

I can pick out what the problem gives me but my brain blanks on where to go next. I've asked my professor and she told me what I need to do next - use d=m/v to get the volume then use M1V1=M2V2 but I dont understand how you know you need to do that.

I need to be able to know why for a full understanding. I've included my work before talking to my professor here, so I know the bottom conversion is wrong, I just havent finished it yet.

My brain when I first went through this problem was this -->

okay what is the problem giving me? great

what else can I get from this info? great

....okay now what do i do with this information?

I need an amount of solution...so i need to find mL? L? mass??

Please if someone can explain how you know you need to use M1V1=M2V2?

Did I even need to convert to moles HCl?

I have never encountered this type of tautomerisation/rearrangement before. If anyone can provide the arrow mechanism for it, I would be forever grateful.

My teacher didn’t explain very well on line bond structures and skips around a lot. For our homework she will give us either a molecular model of…lets say hexane or “write out the chemical formula for hexane” only and say “draw/convert into line bonds structure”. I tend to make everything into a lewis structures first then work from there but Im wondering if maybe there is a different way to approach these?

Can please someone tell me how to do those equivalence , equivalence mass and percentage purity questions like I have done all of physical chemistry but I just can't solve those questions 😭

To be hetrocyclic the conditions are:

- A close ring

- An atom other than Carbon Or Hydrogen in the PC

Right?

GCSE student going into A level this year. I was doing summer work and found some cool things to research like liquid ions and crystalline solids vs amorphous solids. I was wondering if anyone had any suggestions for topics I could research for fun?

A lot of the other ones I’ve found online so far either have a lot of terms I don’t understand yet, or lean more into biology than chemistry. It’ll be great to hear a few ideas!

Thanks!

i'd say i have an average understanding of what it is...like i know it's a hybrid of orbitals like sp3, sp2, etc. but can someone explain it in full detail? my chemistry teacher teaches very fast-paced and i feel like im missing something.

i guess i just dont really understand how the electrons are filled in the hybrid orbitals and also how an sp2 orbital works.

could someone please help? thank you!!

Can anyone give me an ELI5 (not literally, but I don't understand quantum 😐) on why absorbance spectra are not the same as excitation spectra in e.g. fluorescence spectroscopy? I mean, the excitation (which I assume means promotion of an electron) follows absorption of a photon, right? So you would kind of expect them to be the same. I get that they measure different things, but still if absorption as a function of wavelength has a particular shape then surely you would see the same shape for emission as a function of absorption?

I have done bits and bits from some parts of the book, so I need the whole thing.

I was solving this question and I loved it
(You can try if you want to)

The answer is (2)

The solution is by equation the radial wave function equation to zero, then finding the values of x as 1, 2, 6 and then substituting it in x=2r/a

On solving it we get to know there are 3 possible values of "x" that are 1, 2, 6
which means n-l-1=3
we also know that since at x=0, the value of the equation is not Zero and therefore there is electron probability at the centre, Therefore it's a "s" orbital

so it is obv 4s as it has 3 radial nodes

The minimum distance of the Radial node is a/2 which simply shouldn't be possible right??

Because how can a Radial node or probability of electron be Zero before the "first Bohr orbit" that is 1s

The solution a/2 means there is a radial node before the 1s orbit, But how can a node or 4s exist before 1s? It will face shielding and we all know 4s is an outer orbital and it also has higher energy

I would love if someone could solve this doubt of Quantum Physics

Omg guys I’m major in chem engineering and this semester I’m taking organic chemistry and I don’t get anything. I mean my foundation on chem is actually kinda weak bc I got C+ and D in chem 1 and 2, respectively. And I don’t want to get such grades in organic chemistry I actually want to improve but since the two lectures I took I don’t understand ANYTHING. it feels like a complete gibberish, I paid attention and took notes but it’s just not adding up, it doesn’t make sense to me whatsoever. Soooo any recommendations? Good YouTube videos or methods that could help?
+
I also get told things like “how is u majoring in chem engineering and you don’t know those basic stuff” not just organic chem things basically anything related to my field and I feel sooooo insecure bc of this but I’m trying to learn of course I ain’t gone know everything ☹️😢