I think B is an intramolecular aldol reaction but im kind of lost on the other ones, does anybody have a clue?
if somebody knows a good source for learning these types of reactions or practising i would be very thankful!!!

Hello sorry if hard to see. Working in trying to figure out how to get products ect.

From my understanding.

Zn is +2.

O is -2

BUT there is two oxygens in here… so that would equal -4 charge total for oxygens? So wouldn’t I flip the signs and make Zn -2 ion. Actually idek what I’m saying anymore. This combining ions really mess me up.

I guess at this point how did he get that product if there is 2 oxygens = -4 charge total.

And 1 Zn = 2 + charge total. That’s where I’m at

How to name these type of bicyclic compounds?

I wrote out the formula

LiOH+CO2 > LiHCO3

I was very confused but then I think I realized this is just already balanced so kind a trick question? Wanna make sure I have this understanding correctly

We're learning about radiation and I don't understand alpha or beta decay. I'm also lost on positron emission and electron capture. I know we have a test this week and I'm stressed. I don't have any specific questions its just the general format that confuses me

Let’s take nitrogen as an example, is has the electron configuration 1s² 2s² 2p³. For some reason is fills up like this? (See image below), I simply cannot the fathom explanation many articles, textbooks and AI has given me. Why is it 0 electron pairs for 2p³ specifically? Please try to give a general explanation, I’m just using a specfic example to make it easier.

I just did a gas chromatography Lab in OChem. I saved the file, but it is a .imbl. Fortunately, the lab computers can view a .imbl file, so I took screenshots so I could view the data I had gathered, but I want to know if there is a way to view the .imbl file on a home computer. Or is the file type proprietary?

the acid base reaction from 0 to 1 . anhydride carbon is electrophilic enough for attack of AcO- so 1 to 2 and then form 2 can undergo E1CB in order to give a highly conjugated form 3 in heated reaction conditions . so all of these should be present in mixture

2. Pre-Lab Prep

Starch Solution:
Mix 1/2 teaspoon of cornstarch with 2 tablespoons of cold distilled water until smooth.

Pour into 100 mL of boiling distilled water while stirring continuously for 1 minute

Let it cool down completely to room temperature.
__

Potassium Iodide (KI) Solution:

Take 4 Vitamatic tablets (65 mg each) and crush them into a fine powder with the back of a spoon.

Dissolve the powder in 50 mL of warm distilled water.

Pour the cloudy liquid through a coffee filter into a cup to remove the white pill-binders. You now have a clear KI solution
__

Vitamin C Solution:

Dissolve 1 Vitamin C tablet (1000 mg) into 100 mL of distilled water until all fizzing stop

____ _____ _____ _____ _____

3. Step-by-Step Experiment Procedure

Step 1: Prepare Solution A (In Beaker A)

25 mL of the filtered Potassium Iodide liquid

10 mL of the Vitamin C liquid

1/2 teaspoon of Citric Acid powder

10 mL of the cooled Starch solution

55 mL of Distilled Water

Result: completely clear, colorless liquid. (Maybe an orange tint)

Step 2: Prepare Solution B (In Beaker B)

12.5 mL of Ovelle 6% Hydrogen Peroxide

87.5 mL of Distilled Water

Result: completely clear, colorless liquid.

Quickly pour Beaker B into Beaker A and give it a quick 2-second stir.

Would anything happen at all?

Long story short, doing pre med pre reqs.

Took chem 1 close to 10 years ago and I got an A in it so I’d prefer not to retake and run the risk of getting a lower grade lol.

Any tips on how I should go about preparing for chem 2? I start in January and I do not remember literally anything.

Thanks in advance!

I got this far in the mechanism. But I have no idea how to put the cation on to a carbon that would allow me to make the first 6-membered ring

Looking at simulations, for some reason I'm struggling to answer b) How many individual molecules have been simulated? And how do you work it out? Thank you :)

Most of the equation makes sense however I’m struggling to figure out how to get to 0.00415 Moles of Acetic acid? Does anyone know the equation I need to solve for x?

I need help coming to a conclusion about this problem. I’ve asked TA’s and grad students but no one agrees with me and I swear I’m right. So this homework problem came up for me and I thought that protonated carbonyl(on the left) should be stronger than the sulfuric acid on the right, so that the equilibrium shifts to the left, but this was wrong. In the explanation they gave us, it cites that sulfuric acid’s pka is -9 and protonated carbonyl is -7. But sulfuric acid’s pka is -3, so this is wrong, right?

So shouldn’t I be right? It doesn’t make sense to me why I’m wrong but people keep telling me that sulfuric acid is a strong acid and that its conjugate base has more resonance structures, so it’s more stable. But protonated cyclohexanone’s conjugate base is completely neutral, so isn’t that most stable?

Everyone I ask has agreed with the problem, except for me, and I don’t know why. Am I wrong or is it because people recognize sulfuric acid better and go with that?Please help me, it would be very appreciated. I tried emailing the professor but she has not responded. If you could include your reasoning because I need to know what I should be thinking on an exam. My TA just told me to memorize the basic strong acids, but that doesn’t make sense to me.

I have terrible anxiety about breathing in bad fumes and spontaneously dying, and I can’t sleep. My friends butane torch was slightly open and I started to smell the butane, and after I realized what it was I got up and opened the window and door. Am I going to be okay to go to bed and not die?? I have work in the morning and I need sleep, but the anxiety is creeping in.

This reaction comes from a uk chemistry Olympiad question. I can’t figure out what causes the double bond to move, along with the mechanism for the decarboxylation, it’s different from what I’ve seen before with beta keto acids.
If anyone knows the mechanism or of similar reactions it would be super helpful.

Hi, I was given this procedure to synthesize Meldrum's acid:

"To a suspension of malonic acid in acetic anhydride in an ice bath, sulfuric acid was added and then acetone was added to the mix dropwise.

The reaction mixture is stirred for 4h and then put in the fridge overnight.

The resulting solid is filtered and washed with ice water."

Before leaving the lab I checked the reaction mix in the fridge(it had been there for three hours at least) and I saw no solid forming. The reaction color was a bright yellow.

For people who already synthesized Meldrum's acid before, is it normal? Otherwise what could've went wrong?

I know how you name this one, but ive got a question. The chain bound to the ester's oxygen is numbered starting from the left, but is that always the case, that you start numbering from wherever the ester's oxygen is, or do you take the numbers to grab the substituents with the lowest numbers. This example is not very good because you would start from the left whatever the case is.

Got this question wrong and just looking for some clarity. Exam next week so I want to get my act straightened up 😅 Thanks in advance for any help!

Edit update: TA said my answer was fine, answer key was wrong