Search found 80 matches

by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:35 pm
Forum: Calculating Work of Expansion
Topic: negative vs positive work
Replies: 21
Views: 57

Re: negative vs positive work

Work is negative when the system is expanding and positive when its compressing
by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:34 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Units for Gibbs Free Energy Calculations
Replies: 6
Views: 15

Re: Units for Gibbs Free Energy Calculations

G is in in KJ same with H but S is in J/k or sometimes KJ/k
G is typically answered in kJ, and H is usually given in kJ. However, S is usually given in J/K instead of kJ/K, so be sure to convert the J to kJ before plugging it into the equation. Hope this helps!
by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:32 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Closed vs Isolated System
Replies: 28
Views: 53

Re: Closed vs Isolated System

heat can be added in a closed system but cant be in an isolated one
by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:30 pm
Forum: Student Social/Study Group
Topic: Spontaneous/Favorable
Replies: 4
Views: 10

Re: Spontaneous/Favorable

theyre the same you can use interchangeably
by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:30 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Would an aq agent be included in K?
Replies: 27
Views: 82

Re: Would an aq agent be included in K?

solids and liquids no aq and gas yes
by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:28 pm
Forum: Student Social/Study Group
Topic: Points needed to pass?
Replies: 49
Views: 166

Re: Points needed to pass?

theres a total of 400 points you can calculate how manhy points you can miss for the desired grade
by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:27 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: R constants
Replies: 40
Views: 878

Re: R constants

8.314 is common for this unit
by Lily Anne Garcia 1C
Sun Feb 14, 2021 11:26 pm
Forum: Student Social/Study Group
Topic: Valentine's Day Long Weekend!
Replies: 28
Views: 87

Re: Valentine's Day Long Weekend!

happy valentines day!
by Lily Anne Garcia 1C
Sun Jan 31, 2021 6:12 pm
Forum: Student Social/Study Group
Topic: Guyssssss...(midterm)
Replies: 22
Views: 177

Re: Guyssssss...(midterm)

i was pleasantly surprised with the midterm. im glad we made it through the first one proud of you guys!
by Lily Anne Garcia 1C
Sun Jan 31, 2021 6:04 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: State Function
Replies: 22
Views: 50

Re: State Function

work is dependent on the path taken to obtain its current state
by Lily Anne Garcia 1C
Sun Jan 31, 2021 6:02 pm
Forum: Student Social/Study Group
Topic: Go treat yourself after MT1!
Replies: 75
Views: 300

Re: Go treat yourself after MT1!

so proud of us!!
by Lily Anne Garcia 1C
Sun Jan 31, 2021 6:02 pm
Forum: Student Social/Study Group
Topic: Congrats!!
Replies: 21
Views: 141

Re: Congrats!!

woohooo lets go guys!!!
by Lily Anne Garcia 1C
Thu Jan 28, 2021 3:41 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Textbook example 5I.3
Replies: 4
Views: 31

Re: Textbook example 5I.3

because of how small K is, its less than 10^-4
by Lily Anne Garcia 1C
Sun Jan 24, 2021 2:54 pm
Forum: Administrative Questions and Class Announcements
Topic: UA workshops
Replies: 1
Views: 22

Re: UA workshops

i believe justin did for both midterms and the final last quarter
by Lily Anne Garcia 1C
Sun Jan 24, 2021 2:53 pm
Forum: General Science Questions
Topic: Studying
Replies: 42
Views: 446

Re: Studying

just do textbook problems!
by Lily Anne Garcia 1C
Sun Jan 24, 2021 2:53 pm
Forum: Administrative Questions and Class Announcements
Topic: Grading Scale
Replies: 16
Views: 388

Re: Grading Scale

c- = 50%
by Lily Anne Garcia 1C
Sun Jan 24, 2021 2:49 pm
Forum: Student Social/Study Group
Topic: Midterms During Lecture
Replies: 44
Views: 234

Re: Midterms During Lecture

you can find it on the syllabus and exam schedule on his website
by Lily Anne Garcia 1C
Sun Jan 24, 2021 2:48 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Timing
Replies: 15
Views: 50

Re: Midterm Timing

i am a little slow when it comes to test taking but i felt that i had enough time to finish. mayb enot look back over every single question but definitely get to the ones that i was unsure about
by Lily Anne Garcia 1C
Sun Jan 24, 2021 2:47 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Should we memorize any standard states?
Replies: 3
Views: 33

Re: Should we memorize any standard states?

i would just get yourself comfortable with recognizing them not necessarily memorizing
by Lily Anne Garcia 1C
Sun Jan 17, 2021 11:59 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: quadratic formula values
Replies: 13
Views: 77

Re: quadratic formula values

no negative x values and if theyre both positive one will be bigger than the initial condition which isnt right
by Lily Anne Garcia 1C
Sun Jan 17, 2021 11:58 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kc and Kp
Replies: 11
Views: 54

Re: Kc and Kp

kc is for concentration while kp is for pressure
by Lily Anne Garcia 1C
Sun Jan 17, 2021 11:57 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Increasing pressure
Replies: 23
Views: 104

Re: Increasing pressure

if youre adding a gas that isnt going to react with the already present gases then it wont do anything
by Lily Anne Garcia 1C
Sun Jan 17, 2021 11:55 pm
Forum: Student Social/Study Group
Topic: Study Strategies
Replies: 31
Views: 59

Re: Study Strategies

do the textbook problems and attend step ups
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:59 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Gas Constant (R)
Replies: 12
Views: 94

Re: Gas Constant (R)

it really depends on what the problem is asking you to do. You have to associate one of the three R constants with whatever equation youre using
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:58 pm
Forum: Administrative Questions and Class Announcements
Topic: Accessing the E-textbook [ENDORSED]
Replies: 107
Views: 7254

Re: Accessing the E-textbook [ENDORSED]

i would encourage multi term, that way you can use it over several quarters for a more reasonable price
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:57 pm
Forum: Ideal Gases
Topic: Kc for Gases
Replies: 11
Views: 81

Re: Kc for Gases

you only use partial pressures when solving for Kp meaning that they would be giving you pressures of the gases. If they give you concentrations, then you calculate Kc
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:56 pm
Forum: Ideal Gases
Topic: PV=nRT
Replies: 74
Views: 504

Re: PV=nRT

pressure, volume, number of moles, constant, tempurature
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:55 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: reaction quotient Q vs. equilibrium constant K
Replies: 11
Views: 74

Re: reaction quotient Q vs. equilibrium constant K

basically k is the constant when the reaction is at equuilibrium, and you calculate q when either more reactants or products are added to the system.
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:54 pm
Forum: Administrative Questions and Class Announcements
Topic: Lecture Format
Replies: 22
Views: 125

Re: Lecture Format

sadly they are all pre recorded, you can attend his office hours live
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:53 pm
Forum: Ideal Gases
Topic: Kc vs Kp
Replies: 109
Views: 989

Re: Kc vs Kp

Kc refers to concentration while Kp refers to pressure. You calculate either or depending on what values you were given in the problem.
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Sapling Assignments
Replies: 28
Views: 154

Re: Sapling Assignments

sapling and chem community are the only mandatory graded assignments
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:51 pm
Forum: Ideal Gases
Topic: reversing reactions
Replies: 83
Views: 437

Re: reversing reactions

1/K
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:50 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q and K
Replies: 17
Views: 131

Re: Q and K

K stays the same, but Q is what you calculate after more reactants are added
by Lily Anne Garcia 1C
Thu Jan 07, 2021 8:49 pm
Forum: Administrative Questions and Class Announcements
Topic: Audio-Visual Topics
Replies: 13
Views: 79

Re: Audio-Visual Topics

theyre not part of our grade, only for additional practice. i believe thyer only put up for the first section
by Lily Anne Garcia 1C
Wed Dec 09, 2020 6:04 pm
Forum: Administrative Questions and Class Announcements
Topic: review sessions
Replies: 2
Views: 61

Re: review sessions

sadly, no.
by Lily Anne Garcia 1C
Wed Dec 09, 2020 6:04 pm
Forum: Student Social/Study Group
Topic: Final Exam
Replies: 11
Views: 121

Re: Final Exam

probably a mix of some we have seen and some new ones. same as the midterms.
by Lily Anne Garcia 1C
Wed Dec 09, 2020 6:02 pm
Forum: Naming
Topic: Naming quizlet
Replies: 41
Views: 299

Re: Naming quizlet

this is great thank you so much
by Lily Anne Garcia 1C
Wed Dec 09, 2020 6:02 pm
Forum: Biological Examples
Topic: Final Exam
Replies: 8
Views: 141

Re: Final Exam

i think if youre going to ua sessions and do the textbook problems youll see everything you need to know
by Lily Anne Garcia 1C
Sun Nov 29, 2020 7:14 pm
Forum: Student Social/Study Group
Topic: Tips for Staying Focused
Replies: 52
Views: 587

Re: Tips for Staying Focused

i set aside my phone and anything that would potentially distract me. Then i let myself work for a certain amount of time and give myself a little break afterwards. that way it is more manageable.
by Lily Anne Garcia 1C
Sun Nov 29, 2020 7:13 pm
Forum: Student Social/Study Group
Topic: Week 8/9 Thoughts/Worries
Replies: 66
Views: 502

Re: Week 8/9 Thoughts/Worries

im okay as of now but stressing big time for the final
by Lily Anne Garcia 1C
Sun Nov 29, 2020 7:12 pm
Forum: Ionic & Covalent Bonds
Topic: Homework due date
Replies: 49
Views: 369

Re: Homework due date

sunday night at 11:59
by Lily Anne Garcia 1C
Sun Nov 29, 2020 7:11 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent
Replies: 9
Views: 85

Re: Bent

yeah theyre the same thing
by Lily Anne Garcia 1C
Sun Nov 29, 2020 7:11 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 236
Views: 36146

Re: Final Jitters

Its important to get a lot o frest the night before. I also remind myself that at that moment, it is the most prepared i can be. stressing only creates anxiety for taking the test. just breathe :)
by Lily Anne Garcia 1C
Sun Nov 22, 2020 10:31 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 3d and 4s
Replies: 9
Views: 74

Re: 3d and 4s

an element is more stable with a half full or full filled orbital shell
by Lily Anne Garcia 1C
Sun Nov 22, 2020 10:26 pm
Forum: Ionic & Covalent Bonds
Topic: Ionization Energy
Replies: 19
Views: 168

Re: Ionization Energy

it always takes the electron from the orbital furthest away from the nucleus
by Lily Anne Garcia 1C
Sun Nov 22, 2020 6:48 pm
Forum: Student Social/Study Group
Topic: Finals!
Replies: 43
Views: 358

Re: Finals!

yes it is thats why we had two separate midterms
by Lily Anne Garcia 1C
Sun Nov 22, 2020 6:46 pm
Forum: Student Social/Study Group
Topic: How to relax after midterms
Replies: 54
Views: 290

Re: How to relax after midterms

After midterms, i love to watch netflix and sleep.
by Lily Anne Garcia 1C
Sun Nov 15, 2020 9:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Missed chem community posts
Replies: 12
Views: 114

Re: Missed chem community posts

i think you just need an accumulative count of 50 posts by the end of the quarter
by Lily Anne Garcia 1C
Sun Nov 15, 2020 9:50 pm
Forum: General Science Questions
Topic: Midterm 2
Replies: 12
Views: 94

Re: Midterm 2

lavelle sent out an outline 3 page you can also find it on his website
by Lily Anne Garcia 1C
Sun Nov 15, 2020 9:49 pm
Forum: Lewis Structures
Topic: Brackets
Replies: 9
Views: 52

Re: Brackets

you use brackets when the molecule has an overall neg or pos charge
by Lily Anne Garcia 1C
Sun Nov 15, 2020 9:46 pm
Forum: Resonance Structures
Topic: Sapling 9
Replies: 5
Views: 52

Re: Sapling 9

the one with the formal charge closest to zero is the most plausible
by Lily Anne Garcia 1C
Mon Nov 09, 2020 12:05 am
Forum: Quantum Numbers and The H-Atom
Topic: Are there subshells past f?
Replies: 28
Views: 177

Re: Are there subshells past f?

I think there are a bunch more but we wont cover them
by Lily Anne Garcia 1C
Mon Nov 09, 2020 12:04 am
Forum: Ionic & Covalent Bonds
Topic: resources
Replies: 7
Views: 23

Re: resources

Khan Academy works wonders!
by Lily Anne Garcia 1C
Mon Nov 09, 2020 12:03 am
Forum: Student Social/Study Group
Topic: Forming Virtual Study Group
Replies: 31
Views: 198

Re: Forming Virtual Study Group

Yes I would love that even for next midterm!!
by Lily Anne Garcia 1C
Mon Nov 09, 2020 12:01 am
Forum: Student Social/Study Group
Topic: Post Midterm Blues
Replies: 71
Views: 652

Re: Post Midterm Blues

Dont even worry, Im sure you did great. We can always do better on the next one!
by Lily Anne Garcia 1C
Sun Nov 01, 2020 9:22 pm
Forum: DeBroglie Equation
Topic: Sapling #10
Replies: 3
Views: 52

Re: Sapling #10

Use wavelength=h/mv but make sure the mass is its diatomic weight (x2) and divided by avogadros number
by Lily Anne Garcia 1C
Sun Nov 01, 2020 9:20 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm scores
Replies: 15
Views: 119

Re: Midterm scores

305572629 wrote:Does anyone know if the next midterm and final exam will be multiple choice?

I think they would be multiple choice if we take them online but Im not completely sure no info has come out yet
by Lily Anne Garcia 1C
Sun Nov 01, 2020 9:19 pm
Forum: Properties of Light
Topic: Sapling Violet line observed
Replies: 2
Views: 28

Re: Sapling Violet line observed

Violet light is in the Balmer series meaning n1=2. Calculate frequency using wavelength value. Then use frequency value in rydberg equation to calculate n2
by Lily Anne Garcia 1C
Sun Nov 01, 2020 9:17 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Sapling Q #18 and 19
Replies: 3
Views: 46

Re: Sapling Q #18 and 19

Ah sorry to say I wasn't having this problem. Maybe you inputed incorrect values?
by Lily Anne Garcia 1C
Sun Nov 01, 2020 9:16 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration
Replies: 8
Views: 52

Re: Electron Configuration

Hi! 4s is filled first and has lower energy
by Lily Anne Garcia 1C
Sun Oct 25, 2020 8:44 pm
Forum: General Science Questions
Topic: When to use sig figs
Replies: 19
Views: 114

Re: When to use sig figs

To avoid round off error, use the whole number until your very last calculation. If you need to write down numbers for problems with multiple steps, you can round them on paper, but keep the entire number on your calculator so you can produce a more accurate answer at the end.
by Lily Anne Garcia 1C
Sun Oct 25, 2020 8:41 pm
Forum: Administrative Questions and Class Announcements
Topic: Sampling HW Problems
Replies: 4
Views: 55

Re: Sampling HW Problems

I think they are all still shuffled but everyone has the same order. Someone informed me that problems 1-10,12,14,19,22-27 are the ones to focus on.
by Lily Anne Garcia 1C
Sun Oct 25, 2020 8:38 pm
Forum: Student Social/Study Group
Topic: How do you study?
Replies: 19
Views: 170

Re: How do you study?

Hey Nicolette, I'm also a freshman this year. One thing I have been doing to study is looking through his outlines and modules. While the lectures are very informative, these additional resources on his website allow for extra practice and explanations. At the end of the day, repetition is what help...
by Lily Anne Garcia 1C
Sun Oct 25, 2020 8:34 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbital shapes
Replies: 3
Views: 42

Re: Orbital shapes

To answer the first part of your question, the electrons they describe have different probability distributions around the nucleus. This means that the electrons can be found in a variety of different region which leads to forces with different strengths.
by Lily Anne Garcia 1C
Sun Oct 25, 2020 8:31 pm
Forum: Student Social/Study Group
Topic: How to relax
Replies: 125
Views: 690

Re: How to relax

I love watching Netflix. Tiktok keeps me very entertained as well.
by Lily Anne Garcia 1C
Sun Oct 25, 2020 8:31 pm
Forum: Einstein Equation
Topic: Scratch paper during the exam
Replies: 19
Views: 154

Re: Scratch paper during the exam

I was confused with this too, we asked our TA during discussion and he said he was okay with us having extra scratch paper out. I would definitely email yours just to be sure.
by Lily Anne Garcia 1C
Sun Oct 25, 2020 8:29 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Electron-Density Distribution
Replies: 2
Views: 13

Re: Electron-Density Distribution

Hi this is a very interesting question actually. To be honest, Im not completely sure but I would assume that it is just a very very low number. As you get closer it just approaches zero but never actually reaches it.
by Lily Anne Garcia 1C
Sun Oct 18, 2020 10:12 pm
Forum: General Science Questions
Topic: Sig Figs
Replies: 14
Views: 83

Re: Sig Figs

Basically, you want to use the same amount of sigfigs as the value given in the problem with the least amount. If the given values were .0078, 5.076, and .72635, your answer should only contain 2 sigfigs. I'm not too sure if we will get penalized for using the wrong amount of sig figs, but I would a...
by Lily Anne Garcia 1C
Sun Oct 18, 2020 10:10 pm
Forum: Student Social/Study Group
Topic: Midterm 1
Replies: 8
Views: 64

Re: Midterm 1

HI! As stated above, we will only be covering week 1-3 content. Dr. Lavelle explained in a recent email that he would never make a test covering content we were learning in that current week. Hope this helped!!
by Lily Anne Garcia 1C
Sun Oct 18, 2020 10:08 pm
Forum: Photoelectric Effect
Topic: Short/high wavelength
Replies: 7
Views: 57

Re: Short/high wavelength

Hi! Each photon must have sufficient energy to overcome the energy of an electron. Increasing the intensity only adds more photons, but doesn't change the amount of energy each photon has. That is why a higher frequency is needed in order to eject electrons and wavelength doesn't have much of an aff...
by Lily Anne Garcia 1C
Sun Oct 18, 2020 10:05 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Logic behind it
Replies: 3
Views: 51

Re: Logic behind it

Hi! I am not 100% positive, but I believe this answer is based solely off of logic. Nothing can possibly move faster than the speed of light.
by Lily Anne Garcia 1C
Sun Oct 18, 2020 10:03 pm
Forum: Administrative Questions and Class Announcements
Topic: formulas/equations
Replies: 2
Views: 22

Re: formulas/equations

Hi! Professor informed us that we will be given a formula sheet and will not have to memorize equations. He believes it is more important to understand the concepts during the problem solving process.
by Lily Anne Garcia 1C
Sun Oct 18, 2020 10:00 pm
Forum: Student Social/Study Group
Topic: Respondus Tutorial
Replies: 1
Views: 10

Re: Respondus Tutorial

Hi! So, basically when on Respondus you are unable to exit that browser. This means that when you get to the zoom link, you have to deny the popup that says "open zoom app?" Instead, try clicking on the option down below written in blue that says "open zoom on browser." This shou...
by Lily Anne Garcia 1C
Thu Oct 08, 2020 5:28 pm
Forum: Molarity, Solutions, Dilutions
Topic: Molarity written with (aq)
Replies: 4
Views: 59

Re: Molarity written with (aq)

As of now, I don't think you have to worry about writing the phases. That is not a topic we have covered yet and professor said that we would go into detail about it sometime in the future. If it makes you feel any better, I have never seen it after a molar concentration value either!
by Lily Anne Garcia 1C
Thu Oct 08, 2020 5:23 pm
Forum: Limiting Reactant Calculations
Topic: Significant figures when using scientific notion
Replies: 5
Views: 57

Re: Significant figures when using scientific notion

Yes! Basically, you want to use the same amount of sigfigs as the value given in the problem with the least amount. If the given values were .0062, 5.098, and .76345, your answer should only contain 2 sigfigs. Hope this helped
by Lily Anne Garcia 1C
Thu Oct 08, 2020 5:20 pm
Forum: Empirical & Molecular Formulas
Topic: difference between empirical and molecular
Replies: 15
Views: 70

Re: difference between empirical and molecular

After calculating the empirical formula, you can use the periodic table to calculate its mass. If the directions are telling you to find the molecular formula, they should have given you a mass for that compound. If you divide the mass of the molecular formula by the mass of the empirical formula an...
by Lily Anne Garcia 1C
Thu Oct 08, 2020 5:14 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Textbook question E.1
Replies: 7
Views: 90

Re: Textbook question E.1

Im not positive that this is correct, but if I were to approach this problem I would multiply 6.022x10^23 by twice the length of the radius. I believe that would give the length of the nanotube. Hope I could help.
by Lily Anne Garcia 1C
Thu Oct 08, 2020 5:07 pm
Forum: SI Units, Unit Conversions
Topic: Sig figs and molar mass
Replies: 18
Views: 118

Re: Sig figs and molar mass

I usually use the entire value that's given on the periodic table. This is so that I can get a more accurate answer, avoiding round-off error. Once your final value is calculated you can adjust the answer to the amount of sig figs for that specific problem.

Go to advanced search