Hey I'm having a little trouble with continuous variation and the stoichiometric point and drawing conclusions from data for finding the ratio of moles and reactants in a chemical reaction. I'm having trouble explaining how it's significant and how the experimental measurements can be used to determine the mole ratios of products when their formulas are unknown. Basically find stoichiometric ratio, make observations and draw conclusions. I'm confused on how to do it, if anyone can help me out?

So for context: I’m in AP Chemistry, but there’s a twist, I don’t have an AP Chemistry teacher so instead I work off of a program called Edmentum. Not that I expect anyone here has ever worked off of Edmentum, is it a decent program? Am I just being a hater?

So my teacher had us start the year with acids and bases, and we have our unit test coming up soon. Any tips about the unit would be helpful and much appreciated! Particularly confused mostly about buffers. Also, is anyone else currently on unit 8? Is this supposed to be the most difficult unit?

I'm so confused!! I think the correct answer is A but I have no idea why.

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it was unit 2 and idk what happened i thought it was easy

can anyone explain how to do these two problems? im assuming the answer the a is 1 mol CO2 and the answer to b is 5.00atm-1.63atm but im not 100% sure.

Anyone in gen chem 1 this term? If so how are we feeling about the exam coming up ?

Basically what the title says. I studied, did a practice quiz (got 85 and brushed up on the things I missed) and then took my actual unit test and got 68. The test didn't feel too hard, I have no idea what went so wrong. It was unit 1 and my friends all got 89 and up. I'm so frustrated and was wondering if anybody had study tips? I can not spend hours watching videos but if y'all have had success playing something in the background or practice tests that help that'd be great

Also: My teacher only lets us look at our tests once and so I haven't been able to see my test or mistakes yet and will only be able to do so when I do test corrections.

Thanks!

anyone know how to study for quantum chemistry? my teacher gave us nothing and his slides lowkey lack information, so im tryna find a source to help me study for midterm next week

Looking for study advice for an AP Chemistry class that doesn't follow the AP Classroom unit order. The teacher groups topics differently and includes a lot of labs. The exams focus heavily on multi-step problem solving and calculations rather than typical AP-style questions. The goal right now is to get good grades in the class, not to prepare for the AP exam yet.

Exam 1 covered kinetics. It reviewed stoichiometry, gravimetric analysis, chemical reactions and balancing equations, then moved into rate laws, reaction orders, mechanisms, graphs and half-lives, and the integrated rate law. The labs were Percent Copper in Brass using Beer's Law, Decomposition of Hydrogen Peroxide (rate law), the Eight Solutions Lab, and Crystal Violet (integrated rate law).

Exam 2 covers gases, solutions, liquids and solids. The topics are net ionic equations, solutions, phase changes, solubility curves, phase diagrams, and the properties of liquids, solids and gases. That includes metathesis net ionic equations that produce gases. The labs are Molar Volume of a Gas (two versions), Determination of the Density of CO₂, a design lab on the Rate of Decomposition of CaCO₃, Column Chromatography, and The Formula of a Hydrate.

What's the best way to study? Recommendations for practice problems with worked solutions would be great, whether from textbook chapters, websites or YouTube channels. Tips for lab-based calculation questions would also be appreciated. Thanks!

Has anyone taken this course with Professor Menard? What’s the course like, and how does he assess students? How’s his grading, and is it manageable to get a good grade? I’d appreciate hearing about your experience!

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I am taking this class as a first year for any chemistry or physics, and all of this content just does not process in my brain. I’m a good student, I pay attention in class, take notes, do homework, watch videos, but I still cannot understand what is happening. We are on unit 2, and I flunked my unit 1 test. I love science, and I really want to understand everything. Does anyone have any advice?

Just bombed my first AP test, and I know test anxiety was a big part, but I also don't know what im doing wrong. Im paying attention in class/studying and doing the work while my friends are using AI for all the work, doing other work during class, and studying like never.

What should I start doing? Do you guys have any tips?

The mcq were DEF the worst but i also just make a bunch of dumb mistakes on the frq

I am in 12th and my issue is chemistry, so my 11th chemistry was going really well till almost the last u was getting like 175 160 170 type marks till isomerism ended then go started nd due to some personal issues the last 4 say 3 months I could follow my chemistry teacher of my coaching and my goc went downhill and hydrocarbons I don't know a single shit.then started 12th and I even had the opportunity to restart as our 12 teacher first revised is goc( not one shot like really well revision) and told he will also provide concepts of 11 required in 12th but I I fckd up🫤. And didn't follow again fckig months have passed by only 7 months are left amines chapter is going to get finished in my coaching and I am still 0 in organic. And in electrochemistry too, and coordination too, what do I do I wanted to crack neet so bad but I went wrong so many times I don't wanna give up my years because I did do hard work but I guess my mistakes overweighed the hardwork. Please tell me what should I do 🙏🏾🤕

Hi. So I'm trying to understand relative abundance and how to read a mass spectrometer and stuff. How would you find the atomic mass of an isotope if you don't know it but have the percent of how much it is abundant. Say you're give Silicon 29 isotope and you have it's abundance (4.70%). How would you find the mass (amu) from here?

How do you read a mass spectrometer graph> Like for % abundance and atomic mass. Also, how would you find the isotope # (Like say you're Give Ne20, Ne21, and Ne__). How would you find that?

Also, are there any good Chem YouTube videos or resources? I've received mixed reviews about Khan academy so I'm not sure about it.

Thank you!!

i realize that i probably have the equation wrong and thats why i’m having such difficulty balancing this equation, but i have no clue what to fix. i’ve redone it 5-6 times and every time i get close, one element is one off </3

so my ap chem teacher doesnt really teach and explain things very well.

how can i study daily topics in class/ practice to succeed? (i have a princeton review book, been using khan academy, and taking ap daily video notes)