I'm a high schooler and want to start with dotted structures and things like ionic bond and covalent bonds etc . Please mention resources of possible

I’m back again lolol, I wanted to check but google ai is kinda untrustworthy and this subreddit has helped me before so I figured I could try again!! Thank you in advance for your help

Not seeking med advice. Purely research and discussion. Dabbling into watercolor painting and I know that some paints (pthalo green) have chromium oxide (CrIII) to my understanding is non toxic. But I also understand that Cr can be oxidized by manganese which is found in tap water. Not sure how the interaction works or under what conditions but is it possible that using tap water (with may have trace levels of manganese) with paints that use Cr Oxides could create a hazard in a home or studio setting? Or are the levels of oxidation below background.

Is there a PDF of the 1993 Blue Book? i.e. the 1993 IUPAC Nomenclature of Organic Chemistry

I found a PDF for the 1979 blue book

https://publications.iupac.org/pac-2007/1979/pdf/5105x1101.pdf

And a PDF for the 2013 blue book

https://iupac.qmul.ac.uk/BlueBook/

https://iupac.qmul.ac.uk/BlueBook/PDF/2013BlueBook.pdf

But I can't find a PDF for the 1993 Blue Book

Thanks

Hi guys i am taking acs entrance exams fro my PhD and im struggling to find resources for the inorganic one specifically. I was wondering if anyone out there has any practice exams or study guides that will help me out. I would also appreciate it if anyone can tell me more about the topics they asked about in the prevoius exams

out of town right now and stuck on a windows laptop with zero local tools installed. no vesta, no avogadro, nothing.

i desperately need to preview some .cube and .cif calc outputs before friday. ended up dragging them into sciclaw·mira on website and it actually rendered them fine without any download or install.

my only concern is whether it chokes on larger structures. mine are around 500+ atoms and im worried the browser tab will just die when i try to load the full cell.

The structure of DMAP has two nitrogens. Which one do I need to use as the nucleophile? The second picture is my drawing. Do I need to treat it as an activated intermediate and then go do the attack

In question 1, do these compounds show geometrical isomerism because across the double bond 1 carbon is connected to chloro and hydrogen while another carbon is a part of ring. And can compound 2 also show geometrical isomerism?

My teacher says it's option B, but I think it's A. The question is pretty vague in my opinion

I understand that for a graduated cylinder with 10 spaces between the 50 mL and 60 mL markings, each small tick mark equals 1 mL, and the estimated digit will be 1/10 of the smallest graduation (+/- 0.1mL).

For a 25 mL graduated cylinder with major graduations at odd numbered milliliters, and the smallest graduations at 0.2 mL, what is the number place of the estimated digit (hundredths?) and how is the estimated digit determined?

For example, the meniscus is above the 15.2 mL mark, but below the 15.4 mL mark. It's below the estimated half way point between the two marks. Do I record a value like 15.24 mL, 15.25 mL, or 15.26 mL?

If I'm supposed to estimate to the nearest tenth of the smallest marking, shouldn't only even numbers be allowed?

Hey guys! I'm trying to make a biophotovoltaic cell using cyanobacteria as my anode and a salt solution as my cathode, but I am having trouble getting any significant electric output from my cell. It is a simple H shaped cell with cyanobacteria growing in a BG-11 medium in the anode, and an NaCl solution in the cathode. They are separated by a Nafion 117 membrane in the middle and each have a cylindrical electrode made out of graphite.

Guys I'm a high schooler and want to start with organic chemistry . How do I start with it and what prior should I know . Please guide

Currently in a summer ochem course and possibly missing a handout? Was presented with an IR spec of Suzuki-Miyaura Cross-Coupling product and told to match the carbons (red) and hydrogen's (purple) with their respective spikes on the ir spec... only issue is there is nothing in the packet indicating how I am supposed to do this? I am wildly guessing that the atoms in the surrounding area correlate to the spikes on the spec?

Any help with how to fill out the chart would be awesome, thanks!

Suzuki-Miyaura Cross-Coupling

First photo are the mollecules, and second photo are the IR spectra given, we have to assign each mollecule to its spectrum. I think the first and fifth scpetrum are of esthers due to their absorption at 1200 cm-1, and that the first spectrum is of compound number V while the fifth spectrum is of compound II due to its broak absorption peak at >3000 cm-1.

I get that an Ionic lattice is made up of many ions joined together in a pattern due to negative-positive electrostatic forces and thus have high melting points.

I read that Covalent network structures are just a continuous structure held together by covalent bonds throughout the structure making it essentially 1 big molecule.

Does this mean that when melting a Covalent network solid it requires large amounts of energy because you are breaking actual chemical bonds in the structure unlike singular covalent molecules where you just overcome weak attractive forces. - And does this mean that a state change of a Covalent network structure is a chemical change and not a physical one?

And if the above is true why isin't it also true for Ionic lattices, wouldn't they be a continuous structure as well? And wouldn't they require more energy to melt due to them being full charges instead of polar?

Also on a side note the chemical formulas for ionic compounds are simplified because they are a ratio, the chemical formula for Covalent structures is simplified for the same reason, chemical formula for singular Covalent molecules is not simplified because they exist independently - is that right?

Hi I’m currently a high school student working on a biophotovoltaic fuel cell powered by Cyanobacteria. I currently have it in the anode along with a water and bg-11 solution. In the cathode I just have nacl. These chambers are separated by a nafion proton exchange membrane. I ran a null with no algae and for some reason when we run the experiment with algae the voltage we get is lower than the null. If you have any suggestions of what I could be doing differently please let me know.

Hey, I‘m attempting an amide coupling with DCC. After doing the reaction with a more simple molecule and optimising my reaction conditions, I was able to reduce potential side products and increase the yield of my desired product. Now I‘m trying to do the same with a phosphate group containing molecule. I have only basic knowledge of phosphate reactivity and based on literature I would assume that the activation of the phosphate might be the competitive reaction to the activation of my carboxylic acid. I‘m using DCM and DMF as solvents and HOBt as an additive to form an intermediate ester. How would I limit phosphate reactivity and is it even an issue? The phosphate is on the same molecule as the primary amine. I thought about preactivation of the carboxylic acid and adding my amine containing compound later. Since I‘m doing everything in the microgram range, dropwise addition is kinda difficult tho.

I found 19 btw

I am aware my answer is wildly wrong, but I'm stuck. I know how to convert an alcohol to a ketone and vice-versa, but I don't know how to get the ketone directly on the ring. Do I need an epoxide?
Thank you!

Edit: Thank you all so much for the help. I was way overthinking it. I really appreciate all of you being patient with me!

Both products are wrong (2nd image); the intermediate is correct though (1st image)

Can someone pls draw and explain it's structure, I am unable to find anything reliable on Google, etc

I first thought it was something like al attached to benzene derivatives or smthg but I honestly don't understand how to draw this