CHEMISTRY COMMUNITY

Hannah Chang 3K

most scientific calculators have embedded program to solve quadratic formula, you could try to practice using it

Hannah Chang 3K

Those mnemonics are so cool

Hannah Chang 3K

Some of the content kind of overlap with those mentioned in the lectures.

Hannah Chang 3K

I like many kinds of music and don't really have a favorite. I listen to different kinds of music for different occasions, like classical music for studying and indie rock for workout

Hannah Chang 3K

it seems like the molarity is already given in this question. molarity is defined as moles of solute per liter of solution

Hannah Chang 3K

my TA last quarter updated the points after each exam and it seems like the "total number" of posts is the key factor.

Hannah Chang 3K

Reading textbook is more helpful than I originally thought

Hannah Chang 3K

I think last quarter my chemistry community grades are posted after each exam so it probably depends on your TA

Hannah Chang 3K

There are three lectures so the midterm would probably be 11am/1pm/3pm depending on which lecture you're enrolled in.

Hannah Chang 3K

Sapling homework with links posted on CCLE is mandatory, and they have specific deadlines. The grading is based on completion, not accuracy.
The practice problems listed in the syllabus under each topic are not mandatory.

Hannah Chang 3K

"<<" ---->much less than

Hannah Chang 3K

I purchased the sapling+ 7th edition ebook a few days ago from ucla and have not received a notification for the prepaid code to access sapling. Does anybody have a solution or are in a similar situation? Thanks. Hi, I had the exact same problem, because I did not previously take 14A with Lavelle. ...

Hannah Chang 3K

When you re-purchased, did you receive a code on email or were you able to access it right away? I still for some reason unable to get into sapling. At first, I tried to use the access code I got last quarter, but it said it's already used. So I chose the other option; which is something like "...

Hannah Chang 3K

Are there solutions posted anywhere for the extra practice textbook problems (not the Sapling questions)? Go to sapling learning site for this class -> Resources -> Atkins 7e SSM (a.k.a. student solution manual). This student solution manual includes answers for odd-number textbook questions, not s...

Hannah Chang 3K

l=5 is theoretically correct though we haven't found actual elements with h orbitals.

Hannah Chang 3K

I pretty much just memorized the formulas and did lots of practice problems.

Hannah Chang 3K

The average of this class still falls within c+/b- range so probably no curve will be applied.

Hannah Chang 3K

Hope we could also see what we did right or wrong.

Hannah Chang 3K

Yeah, it will be cumulative and there will be 30 questions each worth 6 points (180 points total) and we have a total of 95 minutes.

Hannah Chang 3K

Seesaw should have 4 bonds but 5 regions of electron density.

Hannah Chang 3K

probably not necessary to remember the exact value but knowing the relative pH order of different compound is quite important

Hannah Chang 3K

Matlynn Giles 1A wrote:Dr. Lavelle may have said this but are there partial credit questions on the exam?

I didn't recall him mention this yet

Hannah Chang 3K

There haven't been more instructions so I would expect it to be the same as the previous two exams

Hannah Chang 3K

Cooper_Geralds_2E wrote:If we complete the sapling assignments by the due dates are we guaranteed the full 50 points for that portion of our grades?

yeah I think so. when you finished the assignment sapling would also give a percentage completion score

Hannah Chang 3K

All ligands are Lewis bases but not all Lewis bases are ligands

Hannah Chang 3K

I didn't even realize there are words on it until I saw this post.

Hannah Chang 3K

https://lavelle.chem.ucla.edu/wp-conten ... hedule.pdf
Final exam should be 12/13 for everyone.

Hannah Chang 3K

Molecules having only nonpolar bonds cannot be polar.

Hannah Chang 3K

does anyone know if the class average has negatively affected grades? For example, is it possible to be passing the class as of now, but fail it in the end due to a high class average? the averages for the past two midterms are ~80% which still falls in the B- range of a standard grading curve, so ...

Hannah Chang 3K

Is there a way to view the distribution and average score of the class?

Hannah Chang 3K

since we're able to know the shape of the molecule by looking at the lewis structure it's possible to infer the polarity. But ultimately, numerical values of electronegativity would provide the most precise information regarding polarity

Hannah Chang 3K

It's not mentioned in the syllabus so I guess not

Hannah Chang 3K

I use the equation the same way Dr. Lavelle uses during the lecture. FC=V-(shared/2+L)

Hannah Chang 3K

I feel like the second midterm is more difficult than the first one. I wasn't really worried about the first exam since I'm cool with calculation questions. I feel like the second midterm is more memorization oriented and I couldn't really find an efficient way to master it.

Hannah Chang 3K

I don't have problem viewing it, if it is due to VPN issue you could check the library website to figure out how to connect to UCLA network from home.

Hannah Chang 3K

I don't think we will be asked to draw lewis structures since it would be multiple choice questions, perhaps we will be asked to select from pictures that have the correct configuration.

Hannah Chang 3K

Lewis acids are electron acceptor; lewis bases are electron donor

Hannah Chang 3K

I don't recall being told to print out more stuff for the exam except for the equation and periodic table we used last time.

Hannah Chang 3K · Re: Homework due date Week 5/6 HW is due tonight 11/15 11:59pm PST.

Week 5/6 HW is due tonight 11/15 11:59pm PST.

Hannah Chang 3K

lecture #10 ~ leture #18?

Hannah Chang 3K

From what I've heard I think we will always be given the chemical formula

Hannah Chang 3K

Redirect yourself and keep on working hard.

Hannah Chang 3K

I think the arrangement of this class is very suitable for an online format and can even be a self-guided class.

Hannah Chang 3K

Might be helpful to set up a studying space at home. You could try rearrange furnitures and create a space that you are not usually used to.

Hannah Chang 3K

Does anyone remember if every single question in the midterm were either from the textbook or HW?

Hannah Chang 3K

The grades are already available on CCLE

Hannah Chang 3K

I found it helpful to review HW questions before the exam even if I got them right while doing them.

Hannah Chang 3K

If the principal quantum number ( n ) is the same, electrons located in p orbitals are going to be located closer to the nucleus and thus having a bigger shielding effect.

Hannah Chang 3K

electrons are removed from the high energy orbital first.

Hannah Chang 3K

It seems like "j" is being skipped because some languages don't differentiate between the letters "i" and "j".

Hannah Chang 3K

I watched the lectures and make notes first, then jump into the homework; if I don't understand something, I use hints and search on the chemistry community or just the Internet. And finally, go to the textbook.

Hannah Chang 3K

I would assume an A is the standard 90%, which is 450 points. If you're asking about a 4.0 (A and A+), that's usually cut off at 93% or 465 points. Does anyone know why our class uses this grading system? It seems like it works the same way as the 0-100 system but at a larger scale of points. Don't...

Hannah Chang 3K

though I'm not really good at cooking I love MasterChef.

Hannah Chang 3K

Upon reading the comments, I took out the instruction manual of my scientific calculator and realized it has forty built-in scientific constants and does SI conversion.....and there I was, typing stuffs wrong.

Hannah Chang 3K

I think it's quite important to look at the electromagnetic spectrum and memorize how they compare to each other.

Hannah Chang 3K

I forwarded my electronic receipt and asked them to email me the code directly and I got it within two business days.
textonline@asucla.ucla.edu

Hannah Chang 3K

Sunday nights.

Hannah Chang 3K

Did you remember to convert the mass from g to kg?

Hannah Chang 3K

It seems like randomization has been disabled so midterm 1 covers up to Q19.

Hannah Chang 3K

He didn't mention the one on Amazon in his recent class email, but he did say we need to print out "constants and equation" and "periodic table" on his website

Hannah Chang 3K

We need to print out these two pages before the exam and a scientific calculator
https://lavelle.chem.ucla.edu/wp-conten ... ations.pdf
https://lavelle.chem.ucla.edu/wp-conten ... _IUPAC.pdf

Hannah Chang 3K

There are different types of viscometers that measure viscosity. You would need to know the flow rate, shear stress, density.....etc in order to calculate.

Hannah Chang 3K

No, there will always be at least one limiting reactant in a chemical reaction. If there's no limiting reactant, then it means there's an infinite quantity of reactants, and the reaction would run forever. In a reaction with two reactants, either they are both used up simultaneously, or one is a lim...

Hannah Chang 3K

In order for destructive interference to occur, the two waves need to have displacements in the opposite direction (e.g. the troughs of one coincide with the peaks of the other.). If they have the same magnitude/amplitude, freq, energy then they will cancel each other out completely. But destructive...

Hannah Chang 3K

Yes, given that solutions are homogeneous mixtures, solutes should be evenly distributed in the solution.

Search found 65 matches