Search found 104 matches
- Sun Mar 14, 2021 3:56 pm
- Forum: Student Social/Study Group
- Topic: Playlist
- Replies: 86
- Views: 8500
Re: Playlist
Going through a Beach Boys phase right now!!
- Sun Mar 14, 2021 3:55 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 609791
Re: Saying Thank You to Dr. Lavelle
Thank You Dr. Lavelle!
You will forever be ingrained in my freshman year memories! Keep vibing out.
You will forever be ingrained in my freshman year memories! Keep vibing out.
- Sun Mar 14, 2021 3:53 pm
- Forum: General Science Questions
- Topic: No Lavelle Chem 14C?
- Replies: 68
- Views: 5793
Re: No Lavelle Chem 14C?
I think Lavelle teaches some upper-division chem classes.
- Wed Mar 10, 2021 9:40 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Q Calculations
- Replies: 21
- Views: 1117
Re: Q Calculations
I would change the units to mol/L
- Wed Mar 10, 2021 9:32 pm
- Forum: Student Social/Study Group
- Topic: Fave movie/show
- Replies: 67
- Views: 5437
Re: Fave movie/show
Gilmore Girls is my guilty pleasure.. It's on Netflix and there's a revival!
- Wed Mar 10, 2021 9:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: The Final
- Replies: 17
- Views: 919
Re: The Final
I think it is likely!
- Wed Mar 10, 2021 8:46 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: steady-state approximation [ENDORSED]
- Replies: 3
- Views: 316
Re: steady-state approximation [ENDORSED]
I am simply choosing to ignore it LOL. The pre-equilibrium method is easier and gets the same result. Also, Lavelle said himself that he's not going to go over steady-state approximation.
- Sun Mar 07, 2021 11:04 pm
- Forum: Phase Changes & Related Calculations
- Topic: Vapor vs gas
- Replies: 121
- Views: 14015
Re: Vapor vs gas
These terms are used interchangeably I believe.
- Sun Mar 07, 2021 11:03 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Determining The Favored Side of an Equilibrium Product
- Replies: 12
- Views: 1282
Re: Determining The Favored Side of an Equilibrium Product
If Q < K, the reaction will shift to the right (towards products).. If Q > K, the reaction will shift to the left (towards reactants). If they are equal, the reaction is at equilibrium.
- Sun Mar 07, 2021 11:01 pm
- Forum: General Science Questions
- Topic: Final Exam
- Replies: 39
- Views: 2294
Re: Final Exam
For sure there will be review sessions. As for a study guide, it's basically the outlines!
- Sun Mar 07, 2021 11:00 pm
- Forum: Administrative Questions and Class Announcements
- Topic: [CHEM 14B KARAOKE]
- Replies: 68
- Views: 6985
Re: [CHEM 14B KARAOKE]
So sad I missed it! I love karaoke ;(
- Sun Mar 07, 2021 10:54 pm
- Forum: Student Social/Study Group
- Topic: Classes for next quarter?
- Replies: 165
- Views: 19310
Re: Classes for next quarter?
Chem 14BL, Chem 14C, & a GE!
- Fri Feb 26, 2021 10:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm 2 and Final
- Replies: 25
- Views: 1354
Re: Midterm 2 and Final
Makes sense that it would be the same. No reason to switch it up now.
- Fri Feb 26, 2021 10:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 48
- Views: 3101
Re: Final
The amount of time you spend studying a topic should correlate with how much time we spent on it in class since that's how the distribution of questions will be like on the final. Don't waste your energy!
- Fri Feb 26, 2021 10:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: [CHEM 14B KARAOKE]
- Replies: 68
- Views: 6985
Re: [CHEM 14B KARAOKE]
Lavelle will be there? FUN!!!
- Fri Feb 26, 2021 10:32 pm
- Forum: Administrative Questions and Class Announcements
- Topic: When is Sapling HW due?
- Replies: 22
- Views: 1042
Re: When is Sapling HW due?
2/28 at midnight !!
- Fri Feb 26, 2021 10:31 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Grading Point Cuttoff
- Replies: 2
- Views: 249
Re: Grading Point Cuttoff
This question is always asked! I think Julianna is correct though.
- Fri Feb 26, 2021 10:31 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem 14 B Final
- Replies: 34
- Views: 1724
Re: Chem 14 B Final
I totally forgot that for 14A it was cumulative. I was so hyped that finals would only cover the rest of the outlines but I guess not.
- Mon Feb 22, 2021 11:38 am
- Forum: *Free Energy of Activation vs Activation Energy
- Topic: Temperature vs. activation energy
- Replies: 33
- Views: 2631
Re: Temperature vs. activation energy
An increase in T increases K.
- Mon Feb 22, 2021 11:36 am
- Forum: Ideal Gases
- Topic: Temperature
- Replies: 99
- Views: 7769
Re: Temperature
Yes, assume it's at 25 C or 298K
- Mon Feb 22, 2021 11:35 am
- Forum: Calculating Work of Expansion
- Topic: Reversible vs Irreversible
- Replies: 9
- Views: 707
Re: Reversible vs Irreversible
I recommend going back to the lecture where Lavelle distinguished between the two! For an irreversible pathway, work is done against a constant external pressure, and the temperature changes along the pathway. For a reversible pathway, T is constant and V & P are changing.
- Mon Feb 22, 2021 11:32 am
- Forum: General Science Questions
- Topic: No Lavelle Chem 14C?
- Replies: 68
- Views: 5793
Re: No Lavelle Chem 14C?
Lavelle only teaches general chemistry I believe. Feels a little bittersweet. Gonna miss his music before lectures.
- Mon Feb 22, 2021 11:30 am
- Forum: Student Social/Study Group
- Topic: Chem 14B Final
- Replies: 86
- Views: 6553
Re: Chem 14B Final
The textbook is super useful! I usually study based on the textbook and then look at notes from lectures.
- Sun Feb 14, 2021 8:59 pm
- Forum: Student Social/Study Group
- Topic: Culinary Chemistry
- Replies: 239
- Views: 40038
Re: Culinary Chemistry
As someone who loves to bake and cook, it's super interesting to see the relations it has to chemistry and how chem has been able to explain a lot of stuff. One thing that I always remember now is the question/topic/idea we covered (don't remember exactly at this point) about why steam is so much h...
- Sun Feb 14, 2021 8:57 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm 2
- Replies: 33
- Views: 2378
Re: Midterm 2
Lavelle sent out an email about midterm 2 details. I believe it's part of outline 3 and outline 4.
- Sun Feb 14, 2021 8:56 pm
- Forum: Administrative Questions and Class Announcements
- Topic: cc update
- Replies: 23
- Views: 1339
Re: cc update
Yeah, it's not updated continuously. Just make sure you have the correct number of posts by the end of the quarter or Lavelle may email about when he's going to input them (like on the day midterm grades are out).
- Sun Feb 14, 2021 8:54 pm
- Forum: Phase Changes & Related Calculations
- Topic: Phase Changes: delta H and delta S
- Replies: 5
- Views: 664
Re: Phase Changes: delta H and delta S
If delta H is positive, entropy is increasing b/c heat is going into the system. The opposite is true, if delta H is negative, entropy is decreasing b/c heat is leaving the system.
- Sun Feb 14, 2021 8:52 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Can We Review our Exams?
- Replies: 69
- Views: 3839
Re: Can We Review our Exams?
Ask your TA!
- Sun Feb 14, 2021 8:52 pm
- Forum: Ideal Gases
- Topic: Chem BL
- Replies: 107
- Views: 9885
Re: Chem BL
I'm debating on taking BL and C next quarter or just doing C during spring and BL during the summer.
- Sun Feb 07, 2021 7:42 pm
- Forum: Ideal Gases
- Topic: Gas Constant Value
- Replies: 43
- Views: 1845
Re: Gas Constant Value
I don't think you need to stress that much over it (at least for tests) since it's on the formula sheet Lavelle provides.
- Sun Feb 07, 2021 7:41 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3861184
Re: Post All Chemistry Jokes Here
What kind of bear dissolves in water? ...
Polar Bear!
Polar Bear!
- Sun Feb 07, 2021 7:38 pm
- Forum: Student Social/Study Group
- Topic: Spring 2021
- Replies: 106
- Views: 19331
Re: Spring 2021
Curious as to what other classes you guys are taking along with 14BL ?
- Sun Feb 07, 2021 7:34 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm 2
- Replies: 33
- Views: 2378
Re: Midterm 2
Wow, midterm 2 is already coming. How crazy.
- Sun Feb 07, 2021 7:34 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: types of gas
- Replies: 9
- Views: 368
Re: types of gas
Yeah, just draw out the lewis structure.
- Sun Feb 07, 2021 7:31 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Can We Review our Exams?
- Replies: 69
- Views: 3839
Re: Can We Review our Exams?
Ask your TA!
- Sun Jan 31, 2021 9:32 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Making X negligible
- Replies: 34
- Views: 1556
Re: Making X negligible
I prefer just plugging the value I got for x / initial concentration and see if it's above 5%. If it is, the value of x is not negligible and you have to solve the quadratic equation likely. If it's under 5% you're good.
- Sun Jan 31, 2021 9:27 pm
- Forum: Student Social/Study Group
- Topic: Students Who Have a Job
- Replies: 103
- Views: 12382
Re: Students Who Have a Job
I work 20-30 hours a week. It definitely gets overwhelming at times but I really dedicate my working days to working and then after I'm exhausted from work, I'll catch up on all my lectures/notes. On the days that I am off, I try to get as much done as possible and really maximize my time. The downs...
- Sun Jan 31, 2021 9:25 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm #1 Results
- Replies: 18
- Views: 982
Re: Midterm #1 Results
I'm sure it'll be released within the week...
- Sun Jan 31, 2021 9:24 pm
- Forum: General Science Questions
- Topic: Midterm 1 Reactions
- Replies: 70
- Views: 5647
Re: Midterm 1 Reactions
To me, it felt like the difficulty of the midterm 2 for 14A. I think this midterm was definitely harder than the first one we had for 14A.
- Sun Jan 31, 2021 9:22 pm
- Forum: General Science Questions
- Topic: Grades
- Replies: 30
- Views: 2327
Re: Grades
Does anyone know what it means when there is partial credit for the midterms? Like how do we get partial credit when it's a multiple choice question with only one final answer? I think if you chose an answer choice that was derived from doing the problem correctly but messing up in the final stages...
- Sat Jan 23, 2021 7:06 pm
- Forum: General Science Questions
- Topic: Second Deprotonations
- Replies: 6
- Views: 368
Re: Second Deprotonations
2nd protonation is usually much smaller than 1st anyway.
- Sat Jan 23, 2021 7:03 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Periodic Tables on Midterm
- Replies: 23
- Views: 1018
Re: Periodic Tables on Midterm
Yes and I think we have that formula/constant sheet too!
- Sat Jan 23, 2021 7:03 pm
- Forum: Student Social/Study Group
- Topic: Midterm Study Tips
- Replies: 41
- Views: 2033
Re: Midterm Study Tips
I like reading the textbook and looking at the problems.
- Sat Jan 23, 2021 7:02 pm
- Forum: *Calculations Using ΔG° = -RT ln K
- Topic: Vocabulary
- Replies: 13
- Views: 4720
Re: Vocabulary
Yes!
- Sat Jan 23, 2021 7:01 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE Tables
- Replies: 36
- Views: 1987
Re: ICE Tables
Just the coefficients!
- Sun Jan 17, 2021 12:24 am
- Forum: Administrative Questions and Class Announcements
- Topic: UA Worksheets
- Replies: 2
- Views: 212
Re: UA Worksheets
Check this class's groupme! I know a lot of people post links to shared folders full of UA worksheets.
- Sun Jan 17, 2021 12:21 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Strong vs Weak Acids and Bases
- Replies: 7
- Views: 305
Re: Strong vs Weak Acids and Bases
It'd probably be best to memorize the strong acids/bases as there aren't that many.
- Sun Jan 17, 2021 12:20 am
- Forum: Administrative Questions and Class Announcements
- Topic: Calculator for exams
- Replies: 28
- Views: 1064
Re: Calculator for exams
Either is fine, I think. I prefer graphing for obvious reasons.
- Sun Jan 17, 2021 12:18 am
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Kelvin or Celsius?
- Replies: 86
- Views: 6165
Re: Kelvin or Celsius?
Kelvin
- Sun Jan 17, 2021 12:17 am
- Forum: *Alkanes
- Topic: Alkaline environment
- Replies: 6
- Views: 1379
Re: Alkaline environment
... is this why they said to drink bleach?
- Thu Jan 07, 2021 4:43 pm
- Forum: General Science Questions
- Topic: mole vs. M
- Replies: 16
- Views: 3215
Re: mole vs. M
M is molarity. Moles will be referred to as mol or moles.
- Thu Jan 07, 2021 4:40 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Lecture Format
- Replies: 22
- Views: 948
Re: Lecture Format
I wonder what the logistics of having midterms/tests during scheduled lecture times will be like.
- Thu Jan 07, 2021 4:38 pm
- Forum: Student Social/Study Group
- Topic: Thoughts on Switching Majors?
- Replies: 35
- Views: 2548
Re: Thoughts on Switching Majors?
If you really loathe the major you're in right now, switch to something that you enjoy! I don't think the process is too difficult unless you're switching into a whole other school/college.
- Thu Jan 07, 2021 4:16 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Accessing the E-textbook [ENDORSED]
- Replies: 125
- Views: 34423
Re: Accessing the E-textbook [ENDORSED]
Sapling is required! In the past, I believe it wasn't, but now it is. You buy the bundle that Lavelle has up on the site, it's around $70ish dollars I believe for multiterm access. It gives you access to the ebook and other resources. Sapling is also where you do the homework which I believe is wort...
- Sat Dec 12, 2020 2:27 pm
- Forum: Student Social/Study Group
- Topic: Final Jitters
- Replies: 457
- Views: 408309
Re: Final Jitters
Don't psych yourself out! Study as best as you can and whatever happens, happens! If you've done all that you can do then just have confidence in the fact that you actively prepared yourself for the test.
- Fri Dec 11, 2020 12:41 pm
- Forum: General Science Questions
- Topic: Textbook Questions on the Final
- Replies: 11
- Views: 699
Re: Textbook Questions on the Final
I'm sure some questions will be formatted like the textbook questions but not all of them.
- Fri Dec 11, 2020 12:40 pm
- Forum: Amphoteric Compounds
- Topic: Amphoteric
- Replies: 8
- Views: 613
Re: Amphoteric
I don't think we need to know this.
- Fri Dec 11, 2020 12:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Content
- Replies: 18
- Views: 1126
Re: Final Content
It'll be cumulative based on how much time we spent on each topic in lectures.
- Fri Dec 11, 2020 12:36 pm
- Forum: Significant Figures
- Topic: Things to remember for final?
- Replies: 20
- Views: 1382
Re: Things to remember for final?
The "SO I BRought NO CLean CLOthes" thing is genius. I typically just memorized them all.
- Fri Dec 04, 2020 7:02 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Stuck on Sapling HW
- Replies: 14
- Views: 1276
Re: Stuck on Sapling HW
Hey everyone, I was wondering if anyone on here could tutor me on molarity, i cant seem to undestand it all the way through. If you can tutor me please reply and ill frind a way to conatact you. Watch the videos that Lavelle has up on his website! And do the audio-visual units about molarity/diluti...
- Fri Dec 04, 2020 7:00 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Grade Cutoffs
- Replies: 4
- Views: 330
Re: Grade Cutoffs
I think Lavelle said something about finishing up the syllabus? So maybe he'll put grade breakdowns on that.
- Fri Dec 04, 2020 6:59 pm
- Forum: General Science Questions
- Topic: Tricks for Knowing Locations of Metals and Nonmetals on Periodic Table
- Replies: 8
- Views: 5912
Re: Tricks for Knowing Locations of Metals and Nonmetals on Periodic Table
What everyone else said about the staircase! Divide up the periodic table into blocks and you'll get it in no time.
- Fri Dec 04, 2020 6:57 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam Date
- Replies: 21
- Views: 1274
Re: Final Exam Date
I honestly think we'll still be having lectures week 10.
- Fri Dec 04, 2020 6:55 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3861184
Re: Post All Chemistry Jokes Here
choose your fighter https://scontent-sea1-1.xx.fbcdn.net/v/t1.0-9/88064312_2557157307726045_2653155032798593024_n.jpg?_nc_cat=106&ccb=2&_nc_sid=8bfeb9&_nc_ohc=4QXy_lLPnE0AX97wGTR&_nc_ht=scontent-sea1-1.xx&oh=2e9589e2bd801080c24a95d67a9a8445&oe=5FF0E396
- Sun Nov 29, 2020 11:44 pm
- Forum: Sigma & Pi Bonds
- Topic: sapling no 18
- Replies: 5
- Views: 480
Re: sapling no 18
What others have said about triangular/cyclic shape is correct.
- Sun Nov 29, 2020 11:43 pm
- Forum: Empirical & Molecular Formulas
- Topic: Periodic Table and Calculations
- Replies: 21
- Views: 1755
Re: Periodic Table and Calculations
Honestly, any graphing calculator will do. Scientific is fine and all but graphic calculators are better when dealing with so many calculations in chemistry and large numbers.
- Sun Nov 29, 2020 11:42 pm
- Forum: Properties of Light
- Topic: Study Advice
- Replies: 50
- Views: 2569
Re: Study Advice
I haven't been to sessions/workshops. I find that just taking info straight from the book is really helpful, as well as supplementing with info from lectures.
- Sun Nov 29, 2020 11:41 pm
- Forum: Balancing Chemical Reactions
- Topic: States of matter in chem equations
- Replies: 13
- Views: 1063
Re: States of matter in chem equations
Keeping track of states will be useful when you're doing total/net ionic equations and trying to see if a precipitate is formed.
- Sun Nov 29, 2020 11:40 pm
- Forum: Significant Figures
- Topic: 40. versus 40
- Replies: 23
- Views: 1758
Re: 40. versus 40
Victor's summary is good!
- Mon Nov 23, 2020 12:34 am
- Forum: General Science Questions
- Topic: Finals
- Replies: 39
- Views: 2561
Re: Finals
It covers everything! I'm pretty sure it'll be the same format as the midterms.
- Mon Nov 23, 2020 12:27 am
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm 2 Scores
- Replies: 28
- Views: 1584
Re: Midterm 2 Scores
Try not to think about it so much. Enjoy your Thanksgiving and be present!
- Mon Nov 23, 2020 12:25 am
- Forum: Administrative Questions and Class Announcements
- Topic: grades
- Replies: 10
- Views: 625
grades
Does anyone know what the letter grades are in regards to percentages/points? There's no scale that I know of.
- Mon Nov 16, 2020 12:16 am
- Forum: Calculating the pH of Salt Solutions
- Topic: Is pH normally taken at equilibrium concentrations?
- Replies: 7
- Views: 743
Re: Is pH normally taken at equilibrium concentrations?
It usually is implied that it's at equilibrium.
- Mon Nov 16, 2020 12:15 am
- Forum: Ionic & Covalent Bonds
- Topic: Bond Length
- Replies: 6
- Views: 834
Re: Bond Length
Bond length is basically associated with the energy required to break the bonds. Bonds that are shorter are stronger since the atoms/molecules are more tightly held, making it harder to break them apart.
- Mon Nov 16, 2020 12:13 am
- Forum: Dipole Moments
- Topic: London Dispersion Forces
- Replies: 10
- Views: 955
Re: London Dispersion Forces
They all have dispersion forces because at some moment in time, nonpolar molecules can have temporary dipoles.
- Mon Nov 16, 2020 12:11 am
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Avogadro constant
- Replies: 40
- Views: 2658
Re: Avogadro constant
Everyone else put it perfectly! Hope you understand now.
- Sun Nov 15, 2020 8:55 pm
- Forum: General Science Questions
- Topic: Midterm 2
- Replies: 12
- Views: 843
Midterm 2
Does anyone know what sections of the textbook midterm 2 covers?
- Fri Nov 06, 2020 12:35 pm
- Forum: Resonance Structures
- Topic: Faster way to do resonance structures?
- Replies: 3
- Views: 318
Re: Faster way to do resonance structures?
To my knowledge, there isn't a trick or life hack that will make it faster to do resonance structures.
- Fri Nov 06, 2020 12:33 pm
- Forum: Lewis Acids & Bases
- Topic: Octet question
- Replies: 7
- Views: 469
Re: Octet question
I don't think it's too difficult to memorize the exceptions! Also sometimes when you look at a structure it just makes more sense when you think about its stability and formal change.
- Fri Nov 06, 2020 12:31 pm
- Forum: General Science Questions
- Topic: Grade Breakdown
- Replies: 35
- Views: 2507
Re: Grade Breakdown
I'm not sure what the specific grade breakdowns are. Maybe email him?
- Fri Nov 06, 2020 12:29 pm
- Forum: Student Social/Study Group
- Topic: Syllabus
- Replies: 13
- Views: 697
Re: Syllabus
What are you confused about?
- Fri Nov 06, 2020 12:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Acids & Bases in MT2?
- Replies: 4
- Views: 157
Re: Acids & Bases in MT2?
I think he's expecting us to know whatever he has talked about in lecture such as lewis acids/bases but nothing else until we go into further depth.
- Sun Nov 01, 2020 11:14 pm
- Forum: SI Units, Unit Conversions
- Topic: Memorizing SI Units
- Replies: 14
- Views: 2737
Re: Memorizing SI Units
I don't think we are expected to memorize SI units. The picometer conversion was actually on the formula sheet for the midterm! It was a little hard to find for me too.
- Sun Nov 01, 2020 11:12 pm
- Forum: Properties of Light
- Topic: Wavelenght
- Replies: 17
- Views: 807
Re: Wavelenght
Gamma rays have the smallest wavelengths and therefore have the highest energy as they have high frequency!
- Sun Nov 01, 2020 11:11 pm
- Forum: Trends in The Periodic Table
- Topic: Tips for remembering
- Replies: 14
- Views: 718
Re: Tips for remembering
If you ever forget trends, just think about what you know about atoms. It's better to know the reasons why these trends occur rather than just remembering them. However, I do find it helpful to write arrows on my periodic table just to refer back to.
- Sun Nov 01, 2020 11:09 pm
- Forum: Properties of Electrons
- Topic: Sapling 23
- Replies: 2
- Views: 323
Re: Sapling 23
Valerie explained it perfectly!
Just find the energy of the light, convert it to eV, subtract the experimentally measured energy of ejected electrons, then convert the electron affinity to kJ/mole.
Just find the energy of the light, convert it to eV, subtract the experimentally measured energy of ejected electrons, then convert the electron affinity to kJ/mole.
- Sun Nov 01, 2020 10:52 pm
- Forum: Properties of Electrons
- Topic: Sapling #24
- Replies: 7
- Views: 543
Sapling #24
Hi. I'm having some trouble with the homework question pertaining to the wave patterns associated with the Bohr orbits of the hydrogen atom. Could someone explain to me what a sinusoidal and constant wavelength around the orbit looks like?
- Fri Oct 23, 2020 4:53 pm
- Forum: Significant Figures
- Topic: Quick Sig Fig Question with Addition/Subtraction
- Replies: 7
- Views: 529
Re: Quick Sig Fig Question with Addition/Subtraction
A good practice is probably rounding at the end!
- Fri Oct 23, 2020 4:49 pm
- Forum: *Black Body Radiation
- Topic: Midterm 1
- Replies: 15
- Views: 982
Re: Midterm 1
It's included in the readings but I think Lavelle said it's not something we need to know.
- Fri Oct 23, 2020 4:48 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Spin Magnetic Quantum Number
- Replies: 6
- Views: 357
Re: Spin Magnetic Quantum Number
Yes, I don't think you need to know how to determine it, just need to know the quantum numbers.
- Fri Oct 23, 2020 4:47 pm
- Forum: *Shrodinger Equation
- Topic: Understanding of Shrodinger Equation
- Replies: 3
- Views: 180
Re: Understanding of Shrodinger Equation
If you're still confused just look in the textbook! It'll tell you what exactly it's used for.
- Fri Oct 23, 2020 4:46 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm Q
- Replies: 1
- Views: 171
Midterm Q
Is Schrodinger's equation on the midterm and if so, to what extent, if at all?
- Thu Oct 15, 2020 7:04 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: WK 2 Sapling #5
- Replies: 4
- Views: 287
Re: WK 2 Sapling #5
From n=6, an electron could drop to n= 5,4,3,2,1 so you have 5 spectral lines. The highest energy transition would be from n=6 to n=1, which would be the lower wavelength when thinking about the range. The lowest energy transition would be from n=6 to n=5, which would be the larger wavelength when t...
- Thu Oct 15, 2020 6:59 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configuration
- Replies: 8
- Views: 769
Re: Electron Configuration
3d, 4s
- Thu Oct 15, 2020 6:55 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Atomic Spectroscopy
- Replies: 5
- Views: 202
Re: Atomic Spectroscopy
It wouldn't be wavelike properties since it is not continuous like a wave, rather it is quantized.
- Thu Oct 15, 2020 6:53 pm
- Forum: *Black Body Radiation
- Topic: Sapling Wk 2+3 #7
- Replies: 3
- Views: 409
Re: Sapling Wk 2+3 #7
to find the mass, divide the molar mass of O2 by Avogadro's number and then convert it to kg!
- Thu Oct 15, 2020 6:50 pm
- Forum: SI Units, Unit Conversions
- Topic: Webcam
- Replies: 11
- Views: 441
Re: Webcam
If so, you could probably get a webcam on Amazon for like $10.
- Thu Oct 15, 2020 4:33 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Sapling HW
- Replies: 1
- Views: 126
Re: Sapling HW
Just kidding, i figured it out.
- Thu Oct 15, 2020 4:30 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Sapling HW
- Replies: 1
- Views: 126
Sapling HW
I'm kinda having trouble superscripting on Sapling? I'm trying to do it for an electron configuration but can't seem to do it.
- Thu Oct 08, 2020 4:33 pm
- Forum: Student Social/Study Group
- Topic: STEM clubs
- Replies: 8
- Views: 578
Re: STEM clubs
These aren't just strictly STEM clubs but if you're looking for other clubs and activities there's a mega thread on reddit!
https://www.reddit.com/r/ucla/comments/ ... o_get_the/
https://www.reddit.com/r/ucla/comments/ ... o_get_the/