Search found 61 matches
- Sat Mar 16, 2019 11:12 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Morris Review
- Replies: 4
- Views: 823
Re: Morris Review
Thank you!
- Sat Mar 16, 2019 11:10 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Slow and Fast step
- Replies: 4
- Views: 766
Re: Slow and Fast step
So we need to be able to find the intermediate for the final?
- Sat Mar 16, 2019 11:09 pm
- Forum: Administrative Questions and Class Announcements
- Topic: LYNDON'S PORK RAMEN REVIEW
- Replies: 37
- Views: 7738
Re: LYNDON'S PORK RAMEN REVIEW
Would anyone be willing to post pictures of the last few problem solutions?
- Sat Mar 16, 2019 11:06 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Class Curve
- Replies: 11
- Views: 1826
Re: Class Curve
I think it says you cannot pass with under a 50% but it does not specify if you will if you have over.
- Sun Mar 10, 2019 8:52 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Homework
- Replies: 7
- Views: 909
Re: Homework
Thank you! I will check with my TA
- Sun Mar 10, 2019 8:51 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 18
- Views: 2138
Final
Does anyone know the percentage of questions from each unit will be on the final?
- Sun Mar 10, 2019 8:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Morris Review
- Replies: 4
- Views: 823
Morris Review
Did anyone go to Morris's review session today that would be willing to post their notes? I find his sessions really helpful but I was not able to make it today.
- Sun Mar 03, 2019 10:19 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: K Value
- Replies: 7
- Views: 798
Re: K Value
Are significant figures something we are being graded on right now? It seems like he had been pretty relaxed about them recently.
- Sun Mar 03, 2019 10:17 pm
- Forum: Balancing Redox Reactions
- Topic: Short hand notation
- Replies: 8
- Views: 901
Re: Short hand notation
What does the single line represent then? I thought the single line was the salt bridge?
- Sun Mar 03, 2019 10:16 pm
- Forum: Balancing Redox Reactions
- Topic: oxidizing agent and reducing agent
- Replies: 15
- Views: 1408
Re: oxidizing agent and reducing agent
Sometimes it seems like in the homework that sometimes both are losing electrons? Which one is the oxidizing agent in that case?
- Sun Mar 03, 2019 10:14 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Homework
- Replies: 7
- Views: 909
Homework
Is it okay to turn in homework from topics we went over in the beginning of the quarter if we are using it as review for the final?
- Sun Mar 03, 2019 10:12 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Class Curve
- Replies: 11
- Views: 1826
Re: Class Curve
I don't think it says that C- is passing in the syllabus but that has seemed to be the case at least in 14A.
- Sun Mar 03, 2019 10:08 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Finding n
- Replies: 12
- Views: 1152
Re: Finding n
So it is the -e- that is in your reaction.
- Sun Mar 03, 2019 10:07 pm
- Forum: Balancing Redox Reactions
- Topic: Test #2
- Replies: 10
- Views: 1150
Re: Test #2
Was this covered in class? Or were we just expected to know it?
- Sun Mar 03, 2019 10:05 pm
- Forum: Balancing Redox Reactions
- Topic: Adding H+ and H2O
- Replies: 13
- Views: 2973
Re: Adding H+ and H2O
Wait do you put the OH- on the same or opposite side of H+?
- Sun Feb 10, 2019 10:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem 14 BL
- Replies: 5
- Views: 813
Re: Chem 14 BL
I know people who have even saved their chem labs until they completed the rest of the chem series and they said it was fine.
- Sun Feb 10, 2019 10:47 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: DeltaU=q+w
- Replies: 5
- Views: 512
Re: DeltaU=q+w
Yes but q is energy lost as heat it does no work.
- Sun Feb 10, 2019 10:45 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Systems
- Replies: 6
- Views: 986
Re: Systems
More examples could be a cup (open), a jar (closed), and a cooler (insulated).
- Sun Feb 03, 2019 10:57 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 3
- Replies: 10
- Views: 1210
Re: Test 3
We only have two tests this quarter for 14B though, right? Wasn't it changed?
- Sun Feb 03, 2019 10:56 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Homework
- Replies: 5
- Views: 807
Re: Homework
You can do the homework on anything that we have covered, whatever you feel like you need to review the most.
- Sun Feb 03, 2019 10:54 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 1 Solutions
- Replies: 4
- Views: 541
Re: Test 1 Solutions
I don't think Lavelle gives solutions for the tests but I'm sure you could review it with your TA during office hours.
- Sun Feb 03, 2019 10:53 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm Review
- Replies: 14
- Views: 1295
Re: Midterm Review
I know sometimes Lavelle dedicates a class or two to review as well as the provided sessions from the TAs.
- Sun Jan 27, 2019 10:35 pm
- Forum: Phase Changes & Related Calculations
- Topic: reversible/irreversible
- Replies: 8
- Views: 861
Re: reversible/irreversible
Is combustion even reversible with added energy?
- Sun Jan 27, 2019 10:34 pm
- Forum: Phase Changes & Related Calculations
- Topic: Phase changes
- Replies: 14
- Views: 1454
Re: Phase changes
Yes, I believe if it gives off heat it would be negative delta H.
- Sun Jan 27, 2019 10:32 pm
- Forum: Phase Changes & Related Calculations
- Topic: Steam v. Boiling Water
- Replies: 4
- Views: 441
Re: Steam v. Boiling Water
So both creating steam and boiling water are exothermic?
- Mon Jan 21, 2019 9:23 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Salt
- Replies: 4
- Views: 456
Re: Salt
I thought that salt was usually a product?
- Mon Jan 21, 2019 9:21 pm
- Forum: Ideal Gases
- Topic: ice
- Replies: 4
- Views: 608
Re: ice
How do we know if the acid is too strong for an ICE table?
- Mon Jan 21, 2019 9:17 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Pressure
- Replies: 8
- Views: 784
Re: Pressure
Can the Q value change if the pressure is changed?
- Sun Jan 13, 2019 8:44 pm
- Forum: Ideal Gases
- Topic: ICE Table
- Replies: 4
- Views: 454
Re: ICE Table
Do we only use the ICE table when dealing with homogeneous reactions?
- Sun Jan 13, 2019 8:43 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: K vs Q [ENDORSED]
- Replies: 7
- Views: 839
Re: K vs Q [ENDORSED]
So can there be only one value for K but multiple values for Q as the reaction progresses?
- Sun Jan 13, 2019 8:40 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: solids and liquids
- Replies: 5
- Views: 621
Re: solids and liquids
So because they are constants they have no effect on whether the reaction favors the reactants or the products?
- Sat Dec 08, 2018 7:47 pm
- Forum: General Science Questions
- Topic: Audio Visuals
- Replies: 6
- Views: 855
Re: Audio Visuals
There are even Khan Academy videos for quantum on youtube that go beyond the basic stuff.
- Thu Dec 06, 2018 4:08 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Instructor Evaluations
- Replies: 4
- Views: 458
Re: Instructor Evaluations
Is this worth points?
- Thu Dec 06, 2018 4:07 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent Structures
- Replies: 12
- Views: 1353
Re: Bent Structures
How do we know the bond angles of bent structures?
- Thu Dec 06, 2018 4:06 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: polarity
- Replies: 11
- Views: 882
Re: polarity
To check the symmetry of a Lewis Structure you can draw a line down the middle for a simple test
- Thu Dec 06, 2018 4:04 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Drawing trigonal planar
- Replies: 4
- Views: 937
Re: Drawing trigonal planar
It can be helpful conceptually if you know how to draw them but they are not required on tests.
- Thu Dec 06, 2018 4:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone electron
- Replies: 1
- Views: 306
Lone electron
Is it possible to have a lone electron? or would that be a free radical?
- Thu Dec 06, 2018 4:02 pm
- Forum: Administrative Questions and Class Announcements
- Topic: How to find my posts
- Replies: 163
- Views: 184613
Re: How to find my posts
After you post you can also see the number of posts you have made next to your ID if you need to keep track.
- Thu Dec 06, 2018 4:01 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Practice/Final Studying
- Replies: 2
- Views: 498
Re: Practice/Final Studying
If you search the exact class name or add ucla to your search sometimes you can find ones made by other students in the class. Usually you can see the date when it was made too which is helpful.
- Thu Dec 06, 2018 4:00 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam
- Replies: 22
- Views: 1749
Re: Final Exam
Is he going to emphasize the material after the midterm more or will it be more equal?
- Thu Dec 06, 2018 3:58 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Naming on the Final
- Replies: 4
- Views: 567
Re: Naming on the Final
Di you think naming will be emphasized much on the final as we just learned it in the last few days?
- Thu Dec 06, 2018 3:57 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Modules
- Replies: 3
- Views: 552
Re: Modules
After we finished basic high school review I found sites like Khan academy didn't have as many helpful review videos. I think your best bet would probably be to just search YouTube for other lectures.
- Thu Dec 06, 2018 3:55 pm
- Forum: Hybridization
- Topic: lone pairs
- Replies: 20
- Views: 2201
Re: lone pairs
Lone pairs count just as much as an atom for a region of electron density
- Thu Dec 06, 2018 3:52 pm
- Forum: Dipole Moments
- Topic: Polarity
- Replies: 7
- Views: 915
Re: Polarity
If the molecule has no lone pairs then you can tell if it is polar based off of its electronegativity
- Thu Dec 06, 2018 3:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 3
- Replies: 4
- Views: 739
Re: Test 3
If we were not able to get ours back do you think the scores will be posted online in time for the final?
- Thu Dec 06, 2018 3:48 pm
- Forum: Administrative Questions and Class Announcements
- Topic: About the test
- Replies: 8
- Views: 1120
Re: About the test
He did say that there were only going to be 8 questions on the test though, so they must be multi-layered
- Sun Nov 04, 2018 9:41 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: degeneracy in quantum numbers
- Replies: 3
- Views: 368
Re: degeneracy in quantum numbers
So the s block has one degeneracy, the p block has 3, the d block has 5 and the f block has 10
- Sun Nov 04, 2018 9:40 pm
- Forum: Electronegativity
- Topic: electronegativity vs electron affinity
- Replies: 4
- Views: 485
Re: electronegativity vs electron affinity
I don't know how correct this advice I was given is, but I was told by another Chem14A TA that we don't really need to know the concepts behind why they are different in order to do the problems we are given in the Chem14 series.
- Sun Nov 04, 2018 9:38 pm
- Forum: DeBroglie Equation
- Topic: Kg vs Grams
- Replies: 6
- Views: 703
Re: Kg vs Grams
Kg is an SI unit so always convert to Kg
- Sun Oct 28, 2018 9:55 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Test #2
- Replies: 3
- Views: 446
Re: Test #2
How many degeneracies can there be?
- Sun Oct 28, 2018 9:33 pm
- Forum: General Science Questions
- Topic: Khan Academy
- Replies: 10
- Views: 1621
Re: Khan Academy
I have heard that the Khan Academy AP Chem review videos and problem sets are very helpful.
- Sun Oct 28, 2018 9:28 pm
- Forum: General Science Questions
- Topic: BruinCast [ENDORSED]
- Replies: 4
- Views: 805
Re: BruinCast [ENDORSED]
The AV modules are a great tool though if you are looking for something like a bruincast to review the material.
- Sun Oct 28, 2018 9:27 pm
- Forum: General Science Questions
- Topic: Workshops
- Replies: 3
- Views: 383
Re: Workshops
The workshops are also often on the Hill (in Covel), so they are super convenient if you live in the dorms.
- Sun Oct 21, 2018 9:19 pm
- Forum: Properties of Electrons
- Topic: ml
- Replies: 5
- Views: 584
Re: ml
I also have this problem with the different v's that all have different meanings. Is there any way you write yours so you don't mess up?
- Sun Oct 21, 2018 9:16 pm
- Forum: Properties of Light
- Topic: Equations
- Replies: 6
- Views: 655
Re: Equations
Will the constants be given as well?
- Sun Oct 21, 2018 9:14 pm
- Forum: Einstein Equation
- Topic: Units
- Replies: 17
- Views: 1836
Re: Units
Its important to remember that we use kg instead of grams for SI units. I know I always forget!
- Mon Oct 15, 2018 5:15 pm
- Forum: Ideal Gases
- Topic: Reading the textbook
- Replies: 262
- Views: 161735
Re: Reading the textbook
I am a very visual learner so watching videos online also really helps me. Also, with videos you can pause them and rewind, which you can't do in lecture, but its a little more engaging than the textbook.
- Mon Oct 15, 2018 5:13 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Advice from a Medical Student [ENDORSED]
- Replies: 297
- Views: 496206
Re: Advice from a Medical Student [ENDORSED]
Thank you! It is so great to know that these notes will be helpful later.
- Sat Oct 06, 2018 12:30 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Tutoring? [ENDORSED]
- Replies: 121
- Views: 321084
Re: Tutoring? [ENDORSED]
If you are a second year taking this class you probably already know people who took the class freshman year. It's not a bad idea to ask around to see if any of your friends are willing to help you out/tutor you because they see you all the time/can hold you accountable.
- Sat Oct 06, 2018 12:28 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Registering/Creating Your Chemistry Community Account
- Replies: 40
- Views: 102703
Re: Registering/Creating Your Chemistry Community Account
How do we know that our TA will see our posts? Should we email them our alias?
- Sat Oct 06, 2018 12:23 pm
- Forum: SI Units, Unit Conversions
- Topic: Avogadro's Number [ENDORSED]
- Replies: 11
- Views: 1454
Re: Avogadro's Number [ENDORSED]
So when asked for atoms of a molecule we can multiply by the mols by Avogadro's number to get number of atoms, but I do not understand how to get molecules from mols?