I dont really understand the first one (prostaglandin question) and this is my friends answer not mine
The second one:
Is it better to write that cyclopropanone has no special stability, while methylcyclopropenone is stabilized due to aromaticity as the carbon of carbonyl is partially positive so it's sp2 hybridized?
So I was just studying the distribution of electrons in energy levels and i read that Na with it's configuration being 2,8,1 has to give up the valence electrons to become more "stable ". What does stability exactly refer to? I just looked it up on Google and it Saif " to imitate inert gases" . It aint making sense to me. Pls help
Hi guys, I’m trying to clarify something about the action of hot, acidified potassium dichromate (K2Cr2O7) in organic reactions.
I have this molecule:
CH3CH2CH=CHCH2CH2OH
So it has a C=C double bond in the middle and a primary alcohol at the end.
My question is: under hot acidified K2Cr2O7, what actually happens?
Does it:
I’ve seen conflicting sources online. Some say dichromate can cleave alkenes like KMnO4, others say it only reacts with alcohols/aldehydes. I just want to know what the expected standard reaction is in this kind of scenario.
Thanks in advance for any clear explanations!
I'm using a study guide from another school, so i can't readily ask the professor who designed the website, but i started from right went down at C7. It's an old website and wants specific answers. What is this???
I understand SN1 and SN2 substitution reactions, but I'm unsure why the hydrogen is missing from the hydroxyl group
Solved it! Thanks for the help! I keep ending up with 8 hydrogens instead of 6 to fulfil the octet rule and valence electrons. I tried adding charges on my first attempt, but either I did it wrong, or it is not the solution it is looking for. Any help or advice is appreciated.
guys if anyone has it please send there’s no hope in me doing good my exams in a few hours pls help me out IVE TRIED TO STUDY FOR IT SO DONT FOME AT ME BUT IM NOT READY AT ALL AND I NEED TO GET AN A IN THIS PAPER send help
Someone help me please. How am i supposed to draw these on paper? the exam will probably give an atomic number and something like PF5 then ask for hybridization, do i draw it in 3d or what
I have a 2000ml graduated cylinder. It has a marked accuracy of +/- 6ml. The markings are every 20ml which should result in +/- 10ml uncertainty. To get the total uncertainty of a measurement taken with this tool, do I:
Add the uncertainties for a total of +/- 16ml?
Do a quadratic sum for a total of +/- 12ml?
Take the larger of the two for a total of +/- 10ml?
Use only the marked accuracy for a total of +/- 6ml?
Thanks!
Hi, I got this question from a teacher and was wondering if it is even possible to solve. It is problem 5
Can someone pls explain how you can identify the slow step in a multistep reaction bc all my textbook and every single Google search says is that it's the rate determining one which doesn't help at all 💔 Like is there something specific about the reactions that you're supposed to use for figuring it out?? Any help is greatly appreciated
Whilst tutoring a student, I wasn't able to give this a good explanation for this.
The question asked which is the most and which is the least significant resonance contributor among these three:
My understanding is that C contributes the most because everything has a full octet. No issue there.
But the response indicated that A is the least contributing. Is there any good reason why B is better than A? I would have guessed that it is worse because oxygen is electron withdrawing through induction. Yes, oxygen is electron donating through resonance, but I don't think it is correct to use structure C to explain why B is better. Am I just forgetting my fundamentals? Does hyperconjugation contribute?
Basically I've done all I can, from YouTube videos and visualizers to articles and even asking my teacher to explain it to me. For some reason, my understanding of it and dimensional analysis remains very limited.
My teacher uses the scaffold method, which she expects us to use. I just learned a bit on how to apply dimensional analysis onto it but I have little idea how to put moles and grams on it and in which section, where to pull the data from and how I got the answer I got.
I'm pretty sure I will fail chemistry or get a very unsatisfactory grade if I fail to understand stoichiometry, and if not it still won't be good on the long run. I really don't want to have to retake this class.
Are there any resources that I could use or any tips I could use? I'm kinda panicking right now.
Hello!
I was wondering if anyone could help me with this problem. It is an AP Chemistry challenge problem from Honors chem, and I have no clue how to do parts b and c. In order to calculate x, I have to search it up, and it seems as though I can't do the calculation with a simple calculator, which is the only thing I will have on my test. Any help is much appreciated!
Here's what I did:
Molecular mass of NH4:
14 + 1(4)
= 18 grams
In 18 grams of NH4, there's 4 moles of H.
36/18 = 2
36 grams is double 18, so double the moles of H.
4(2) = 8
In 36 grams of NH4, there's 8 moles of H.
Apparently it's 16? Am I going nuts, or what?
I have a specific problem. I understand formulas and how to use them but I have problems when it’s about exercises where you have to interpret what they want from you. For example when everything is given and I just have to use the formula it’s easy but questions where things get added or etc, I don’t understand what to do. What can I do to overcome this?
Thanks
For chemists working in organic synthesis, how do you organize your lab notes?
Hello, I was reading an article ref(pubs.rsc.org/en/content/articlepdf/2016/nr/c6nr00735j), wherein I encountered a doubt.
Basic overview, creating a diode using organic molecules.
So the thing is, when the whole setup is in positive Bias(i.e energy of R > energy of L) the molecules are attracted together. Here is citation from text:
>As the energy of the sites is different at zero bias, the current is low. For positive bias, the sites are pulled towards each other and the current increases. At 0.55 V, a pronounced peak is visible. This is the point where the two sites have equal energy and resonant transport occurs.
So, my doubt here is, in the line, "The sites are pulled towards each other" why? I realize that 2 F on ortho reduce the electron density in the benzene ring, herewith reducing its energy(i hope i got it right), so providing it with more voltage, helps bring this energy difference down and now suddenly the gap that is present(the ethane bridge), that gap is lost and effectively the pi orbitals of the 2 benzene rings are close enough so that resonance can take place, hence a forward bias.
Please help me with this.
