CHEMISTRY COMMUNITY

Constance Newell

Reversible usually has smaller steps while irreversible is normally under a constraint.

Constance Newell

You have to do both, I can't explain why but I guess the concentration has some sort of exponential effect on the constant

Constance Newell

Do yall know if anymore spots are gonna open up?

Constance Newell

Honestly i prefer in person learning, but at the same time I feel like the assessments would also be much harder.

Constance Newell

Yall are the BEST!

Constance Newell

Seraphina Joseph 1C wrote:
Constance Newell wrote:My all time favorite is Chicken Fried by the Zac Brown band
give it a try :) i promise its really good

I love that song too!

OH MY GOSH! Another fellow country fan :)

Constance Newell

The questions seemed much more straight forward than the finals

Constance Newell

it indicates spontaneity, so +E and -G

Constance Newell

It tends to be more solid outside and more aqueous/liquid inside, but what it really does is follow the flow of electrons and sequence which the reactions take place

Constance Newell

I believe this is due to equilibrium

Constance Newell

By test 2 do yall mean final? or am i just confused

Constance Newell

And yes, it does take a bit for the grades to update. If you don't see a change within 3 schooldays i would check in with ur TA

Constance Newell

Is the Final going to be on Saturday? i think i saw it in the syllabus but i am not completely sure....does anyone have anymore info on how it is going to work? like are their different sessions like the midterm or is everyone taking it at once?

Constance Newell

You just put your two equations together, products on one side and reactants on one side. It seems that you have done your coefficients correct. If so, the electrons should cancel out

Constance Newell

lol...maybe its just me but i think i did worse on this test.. definitely a fair exam tho..just gotta study more

Constance Newell

My all time favorite is Chicken Fried by the Zac Brown band
give it a try :) i promise its really good

Constance Newell

You have to go to the drop down menu for attepts and click in the empty box above attempt one and then hit resume

Constance Newell

Lectures are very helpful for conceptual ideas and textbook problems are great for working on harder problems. Sapling is good for understanding basic concepts and formulas.

Constance Newell

AWW man guys...... 14C is all filled up

Constance Newell

Does anyone know if the lectures are recorded/asynchronous or do we have to attend live?

Constance Newell

Nika Gladkov 1A wrote:Dr. Lavelle only teaches 14A and 14B. Dr. Castillo is the professor for 14C.

AWWWWW....I really want Lavelle again...that's sad

Constance Newell

Caelin Brenninkmeijer 1G wrote:
Constance Newell wrote:I'm taking 14 BL right now.. most of the chemistry is pretty basic so I wouldn't stress out about it... whenever you take it

Is there a final for BL?

There is a final, but only 1 midterm

Constance Newell

From what I understand its much easier to get a C then it is to get an A... i think a 50% is needed for a C

Constance Newell

Textbook problems are the way to goo!

Constance Newell

It feels too soon

Constance Newell

Am i blind or is Lavelle not showing up for 14 C :(

Constance Newell

Check the units first! You wanna zero everything out

Constance Newell

NGL....ive never heard of either team

Constance Newell

AHH why is our next midterm so soon.... I feel like we just finished one.
This quarter system really be kicking be in the [censored]

Constance Newell

I'm taking 14 BL right now.. most of the chemistry is pretty basic so I wouldn't stress out about it... whenever you take it

Constance Newell

I believe its much easier to get a C=which is covered... then an A= which is pretty standard... from my understanding

Constance Newell

I believe it only effects gasses..... I could be wrong but I don't think it effects inert gasses tho.

Constance Newell

That was definitely tricky. There were a some questions from the textbook.....those were probably the only questions I was confident in....and then the reset were quite challenging.

Constance Newell

Hey this has probably already been answered but what zoom link do we join for the midterm?
is it the same one as for discussion section or is it something different?

Constance Newell

I have the same question!
I know for my Friday discussion we will still have it.

But, is the zoom link we are supposed to join for the midterm our discussion link or is there going to be another link?

Constance Newell

Exothermic reactions have a negative delta H and endothermic reactions have a positive delta H

Constance Newell

Tired...but good luck on on the midterm guys!

Constance Newell

The text-book problems are an amazing resource!

Constance Newell

Awesome Thank you!

Constance Newell

I think it will depend on what the average distribution is but the above comments are generally right. 93 ish will be a pretty standard A while what is considered as passing will vary.

Constance Newell · Re: class 1/18/21 above replies are correct, no class tomorrow :)

above replies are correct, no class tomorrow :)

Constance Newell

I'm not completely sure what you did but I believe your x-value is wrong. Some tips to make sure your doing these types of questions is to remember if the reaction when balanced has the products have a coefficient greater than 1 then remember when going through the reverse reaction to subtract 2x n...

Constance Newell

I find that the textbook problems are really helpful

Constance Newell

At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.200 M and [NO]=0.600 M. N2(g)+O2(g)↽−−⇀2NO(g) If more NO is added, bringing its concentration to 0.900 M, what will the final concentration of NO be after equilibrium is re‑established? I keep getting 0.75 my K is 9 and ...

Constance Newell

At equilibrium, the concentrations in this system were found to be [N2]=[O2]=0.200 M and [NO]=0.600 M. N2(g)+O2(g)↽−−⇀2NO(g) If more NO is added, bringing its concentration to 0.900 M, what will the final concentration of NO be after equilibrium is re‑established? I keep getting 0.75 my K is 9 and x...

Constance Newell

Isabel Luu 1I wrote:Are there solutions posted anywhere for the extra practice textbook problems (not the Sapling questions)?

Usually not. But you can find answers for most of them at the end of the textbook. And if you can't, usually chemistry community (here) has the answer

Constance Newell

The assignments we have due for this class are the 5 chemistry community posts and sapling every week, both worth the same amount of points

Constance Newell

Also buying the fullterm one will save you more money and if u don't use it, it acts like credit..so u can use it for other classes

Constance Newell

Sapling is automatically graded and we do have HW assignments due for it every sunday

Constance Newell

I know this is off on a tangent but what is considered an A for the class? is it a 90 or a 92? thank you!

Constance Newell

We should receive our grades sometime after Thursday.. when exactly I am not 100% sure

Constance Newell

Yes I felt like I was really rushing in the end. The sad part is that i felt like i understood how to solve all the questions, i just didn't have anytime to do it

Constance Newell

..... really hope there's a curve

Constance Newell

Oh my gosh! same! I felt like I was rushing a lot on this exam. I felt like the Midterm was much less of a time crunch than the final... like i felt it was literally impossible to finish the exam on time. the midterms weren't really representative of the final. Well its over now so not much I can do...

Constance Newell

Which geometry or geometrics are common for complexes with a coordination number of 4?
1.Square Planar **
2. Seesaw
3.Tetrahedral**
4. Trigonal Bipyramidal

Sapling says only 1 and 3 are the answers. Can someone explain to me why see-saw is not a possible answer?
Thank you!

Constance Newell

Ill be attending as many review sesssions as possible, complete textbook problems for new units, and review sapling for old units

Constance Newell

The main things is that Strong Acids and Bases will dissociate/breakup in a solution

Constance Newell

The Walking Dead and Gilmore Girls are by for my favorite!

Constance Newell

Are we still going to need a separate device for a camera

Constance Newell

Im feeling a bit stressed about final bc my second midterm was worse than my second... and each question is worth so many points :(

Constance Newell

Thank you so much!

Constance Newell

OMG, yes! each question on an exam is worth so much of our grade!
But i think 93+ is an A (4.0)

Constance Newell

Yay, I think I would follow green too!

Constance Newell

Is our exam still on the weekend? Or did the date change?

Constance Newell

Thank you so much for sharing!

Constance Newell

Learned this in highschool and found it to be really helpful for remembering certain trends: Periodic table: across down A ↓ ↑ I ↑ ↓ M ↓ ↑ E ↑ ↓ S -- ↑ A: atomic radius I: ionizing energy M: metallic properties E: electronegativity S: shells

Constance Newell

The organic chemistry tutor is great, as well as khan academy. With organic chemistry tutor put him on 2x because he speaks really slow.

Constance Newell

Textbook problems are much harder than the actual tests, almost to the point where they cover material you don't need to know. But it is still good practice. I think the sapling problems are a great for referencing the styles of questions that will be on the exam but i feel like they sometimes skip ...

Constance Newell

Personally I thought midterm 1 was a little too easy and this midterm, although pretty straight forward, had a couple of trickier questions that could really mess you up if you didn't pay attention to the details.

Constance Newell

does anyone know if we will be able to review over the questions in midterm 1

Constance Newell

so if it is up to TA's ds will it kick us out after 56? or are we just responsible for submitting when the TA says the time is up?

Constance Newell

1) the easiest is to just keep everything the same (bond wise) and just rotate locations of bonds
2) move bonds around( can you make a bond from 2 lone e- ? and vise versa?)

Constance Newell

^^^ what they said makes sense... so the best form for nitrogen would be to have 3 bonds and 2 lone electrons

Constance Newell

I think as the ion becomes more negative the ionic radius increases because it is repelling the + charged nucleus more.... that's just my hypothesis. Not 100% sure.

Constance Newell

I feel like this unit is more about structures... but I could be wrong.

Constance Newell

How do virtual labs work? just curious...
Are they like videos and worksheets? or lab reports on given data?

Constance Newell

I would say run through textbook chapter, lecture, textbook problems, sapling, and step up in this order to reinforce concepts before and after lecture.

In my opinion the textbook problems were much harder than the midterm so it was great practice

Constance Newell

I'm doing both right now too. Honestly the concepts aren't that difficult, it just takes more time. It's not to difficult to take both. just don't sike yourself out and manage your time properly.

Constance Newell

Did everyone get a different midterm? because, honestly, I feel like the first one was already fairly short.... i know people were talking about the first one having multiple parts but mine was all multiple choice and it didn't seem as if any of the questions related to one another.

Constance Newell

Honestly i have no clue either

Constance Newell

one v will be cursive and another will not

Constance Newell

I don't remember that but if its a percent then it would be the percent of the number given
so +/- of 9.8

Constance Newell

Avogadro converts moles to "things" which is literally anything that isn't already defined: atomps, particles, ect

Constance Newell

I'm sorry but where on our name are we supposed to click? I keep clicking on my name under the post and it just highlights text

Constance Newell

1B.27 A bowling ball of mass 8.00 kg is rolled down a bowling alley lane at
5.00±5.0m⋅s−1. What is the minimum uncertainty in its position?

Could someone explain why we don't convert 8.00kg to grams in this problem

Thank you!

Constance Newell

Okay, thanks!
Is there a specific reason why we use kg for De Broglie's equation?

Constance Newell

Is wavelength always converted into m or are there any instance where wavelength must be in nm?

Constance Newell

For this equation it asks for the n's when given 102.6 I know that ni(initial) is one. lol, so i really need help with this problem. I keep doing it and i'm doing all the steps people are telling me but I keep getting the wrong answer. I used this equation to get energy E=hc/λ which is 1.937x10^-18 ...

Constance Newell

I also had problem with the question. You would also need to use rydberg's equation

also keep in mind that it is UV which gives a hint as to what the initial orbital is

Constance Newell

some TA were saying around ten then other were saying 30.. i honestly have no clue. I would also love to know how much time we have

Constance Newell

do yall know how long we have?

Constance Newell

hey sorry but are we supposed to have computer sound/mic on bc the feedback kinda annoys me?

Constance Newell

Yes, I did that but i am still not getting the right answer..... lowkey so confused

Constance Newell

Problem: In the ultraviolet spectrum of atomic hydrogen, a line is observed at 102.6 nm. Determine the values of n for the initial and final energy levels of the electron during the emission of energy that leads to this spectral line. So i solved for energy and got: 1.93x10^18 and then I plugged my ...

Constance Newell

You should be able to find molar mass using the given info
X ml C4H8O*(xgrams/ml)=x grams of C4H8O

The masses on each side of the equation should be equal so if you subtract you can find the molar mass of the others.

Constance Newell

I don't believe your marked down. I think the HW competition, but you won't get the credit until all answers are correct

Constance Newell

The previous response is correct. Avogadro's constant is literally a conversion for "things"... so literally, anything that hasn't already been defined.. hahaha ik its very vague but its a great constant to use if you're trying to convert from a measurement you've never used before

Constance Newell

If you add the masses you should get 125.55 g. Then you should be able to find the mol. With the mol, you can set up a proportion to find ml:
(mol1)(ml1)=(mol2)(ml2)

Constance Newell

jasmineculilap_2J wrote:Make sure you're using capital letters. I had that problem too, but you just need capitals.

Awesome! Thank you so much!

Constance Newell

I'm trying to type in the molecular formula for the first part, for example:
C6H8O6, but its not letting me type in letters. Is anyone else having this problem?

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