Search found 85 matches

by AlyssaMaynard1C
Sun Feb 21, 2021 12:52 pm
Forum: Student Social/Study Group
Topic: We made it through Midterm 2!
Replies: 58
Views: 163

Re: We made it through Midterm 2!

Since both midterms were around 15 questions, do we think the final will be 30? Or less
by AlyssaMaynard1C
Sun Feb 21, 2021 12:51 pm
Forum: Student Social/Study Group
Topic: Has anyone taken Chem 20L before?
Replies: 3
Views: 11

Re: Has anyone taken Chem 20L before?

I haven't taken it or plan to take it, but I have several friends who took the 20 series and it sounds pretty rigorous, maybe harder than the 14 series.
by AlyssaMaynard1C
Sun Feb 21, 2021 12:50 pm
Forum: General Science Questions
Topic: MT 2 grades
Replies: 33
Views: 107

Re: MT 2 grades

LexyDenaburg_3A wrote:Does anyone know when midterm 2 grades will be up?

Generally a week, but he always emails us as soon as they're up. Last midterm I believe it took 5 ish days.
by AlyssaMaynard1C
Sun Feb 21, 2021 12:48 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Max Potential
Replies: 4
Views: 23

Re: Max Potential

I have a hard time with this too and have an explanation for max potential in my mind that may help (it's not super scientific so hopefully this isn't wrong). When the switch is open (and current is 0) there aren't any actual electrons flowing but they are built up and have the potential to flow if...
by AlyssaMaynard1C
Sun Feb 21, 2021 12:47 pm
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 237
Views: 36173

Re: Final Jitters

Does anyone know how to calm down your anxieties before you take this final? Since having test anxiety can be very distracting while you're trying to study or even while you're taking the test itself. Open to any tips:) During tests I make sure to have a hot tea or matcha I can sip on because it he...
by AlyssaMaynard1C
Thu Feb 18, 2021 3:47 pm
Forum: Administrative Questions and Class Announcements
Topic: tips if you're struggling!
Replies: 61
Views: 340

Re: tips if you're struggling!

Thank you for these! Do the textbook (none homework) problems really help on the exams? yes definitely! a lot of the times he will take them directly from the textbook and if you did the textbook problems you may even remember the right answer without having to redo it on the test! wait no way! I'v...
by AlyssaMaynard1C
Sat Feb 13, 2021 3:43 pm
Forum: Administrative Questions and Class Announcements
Topic: tips if you're struggling!
Replies: 61
Views: 340

Re: tips if you're struggling!

I thought I'd make a post to share some tips of what works for me to study for this class for anyone who is struggling since we just got our midterm scores back. I definitely make mistakes too so this isn't to "talk down" to anybody at all. feel free to add some more suggestions below! *u...
by AlyssaMaynard1C
Sat Feb 13, 2021 3:40 pm
Forum: Student Social/Study Group
Topic: Balance / Self Care Tips
Replies: 41
Views: 104

Re: Balance / Self Care Tips

How are you guys balancing studying with relax + self care time? I find it hard to do anything but study when a midterm is coming up, but there have been multiple times when I have burnt myself out right before an exam because of this. Does anyone have tips on how to allocate time to both studying ...
by AlyssaMaynard1C
Sat Feb 13, 2021 3:39 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Sapling Question Week 5/6
Replies: 3
Views: 18

Re: Sapling Question Week 5/6

2C2H6(g)+7O2(g)⟶4CO2(g)+6H2O(g) That is the equation used, maybe you are plugging in wrong values from the table? There H 2 O has a gas and liquid row, but it also may just be mistyping? Since your free energy valued for the table are not listed, I tried copy and pasting them from the table into th...
by AlyssaMaynard1C
Sat Feb 13, 2021 3:38 pm
Forum: Student Social/Study Group
Topic: Classes for next quarter?
Replies: 127
Views: 410

Re: Classes for next quarter?

I plan on taking chem 14C next quarter along with anatomy and another course, but I am unsure of what my 3rd class should be. Do you guys have any recommendations? I heard Scand 50 was a good class but I also heard that it fills up fast. I was thinking of taking Scand 50 too! But I am also consider...
by AlyssaMaynard1C
Sat Feb 13, 2021 3:37 pm
Forum: Student Social/Study Group
Topic: Classes for next quarter?
Replies: 127
Views: 410

Re: Classes for next quarter?

Annette Fishman wrote:What classes are you guys enrolling in for Spring quarter?

I'm manifesting Chem 14BL, Environment M133, Film TV 4, and Film TV 112! I hope I can get these all!
by AlyssaMaynard1C
Sun Feb 07, 2021 1:43 pm
Forum: Student Social/Study Group
Topic: Superbowl Sunday
Replies: 25
Views: 105

Re: Superbowl Sunday

905409193 wrote:Who do you think is going to win the Superbowl?! Will it be the Kansas City Chiefs or Tampa Bay Buccaneers?

I'm just excited for The Weeknd's halftime performance, he even spent $7 million of his own money to make this show insane.
by AlyssaMaynard1C
Sun Feb 07, 2021 1:42 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Identification
Replies: 8
Views: 161

Re: Identification

Andrew Yoon 3L wrote:Elements that are in its pure form are the most stable. So diatomic elements and other specific compounds (like graphite) are pure.

Why are they the most stable?
by AlyssaMaynard1C
Sun Feb 07, 2021 1:41 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Systems
Replies: 24
Views: 79

Re: Systems

Lauren To 1E wrote:I think it was mentioned briefly in lecture that the universe is an isolated system because it has constant energy

What's classified as the universe? All the planets, because we don't know everything out there.
by AlyssaMaynard1C
Sun Feb 07, 2021 1:40 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Friday's Lecture
Replies: 8
Views: 50

Re: Friday's Lecture

If you would recall the first law of thermodynamics being the conservation of energy, energy cannot be created nor can it be destroyed, only transferred between the system and its surroundings. The equation deltaU = q + w represents this fact. It pretty much summarizes the idea that the system can ...
by AlyssaMaynard1C
Sun Feb 07, 2021 1:38 pm
Forum: Student Social/Study Group
Topic: Silly Mistakes?
Replies: 60
Views: 283

Re: Silly Mistakes?

I was dispirited today because I wasn't happy with my midterm score and knew I could've done better. Then I searched on the internet "why do I make silly mistakes on the exam?" I found this answer from quora and it really gave me a different perspective, I hope this helps those who feel t...
by AlyssaMaynard1C
Sun Jan 31, 2021 5:38 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: sapling week 3 and 4
Replies: 9
Views: 62

Re: sapling week 3 and 4

Based on relative bond strengths, classify these reactions as endothermic (energy absorbed) or exothermic (energy released). This is problem 4 on the sapling homework. im confused on how to do this problem so if anyone could explain how to work this problem that would be appreciated An update for a...
by AlyssaMaynard1C
Sun Jan 31, 2021 5:37 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K vs. Kc
Replies: 36
Views: 91

Re: K vs. Kc

Mohamed Mido wrote:Kc is K using concentrations, but they're both essentially the same. Sometimes questions ask for K and can give you either concentrations or partial pressures. But when questions ask for Kc then you have to use concentrations.

In what situations would these be used?
by AlyssaMaynard1C
Sun Jan 31, 2021 5:36 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess's Law
Replies: 58
Views: 180

Re: Hess's Law

Edward Tang 1k wrote:It basically just says that enthalpy are state functions and therefore are additive

Adding the reactions can be hard to do, does anyone know a better way to add these?
by AlyssaMaynard1C
Sun Jan 31, 2021 5:35 pm
Forum: Administrative Questions and Class Announcements
Topic: midterm
Replies: 16
Views: 85

Re: midterm

emmaferry2D wrote:Does anyone know when we will get the grades back for the midterm?

Grades are usually posted a week following!
by AlyssaMaynard1C
Mon Jan 25, 2021 11:56 am
Forum: Student Social/Study Group
Topic: Favorite Music
Replies: 104
Views: 286

Re: Favorite Music

What kind of music do y'all be listening to cause I've been circulating the same playlists and need new suggestions 0_o for doing homework, I listen to my normal fave rap artists. when I'm studying and need to focus on retaining specific a bit more, I listen to Jhene Aiko, Brent Faiyaz, and Summer ...
by AlyssaMaynard1C
Mon Jan 25, 2021 11:54 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kp or Kc
Replies: 6
Views: 16

Re: Kp or Kc

When it asks for an equilibrium constant for a reaction between gases, is it wrong to write the Kc (equilibrium constant using concentrations) instead of Kp? The C is for concentration and the P is for pressure, so I believe you can use both for gases but make sure to use the right one when talking...
by AlyssaMaynard1C
Mon Jan 25, 2021 11:52 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: How to use a calorimeter
Replies: 1
Views: 9

Re: How to use a calorimeter

I'm not sure if using a calorimeter is specifically covered on this class, but a food science class would definitely include how to use this instrument.
by AlyssaMaynard1C
Mon Jan 25, 2021 11:51 am
Forum: Student Social/Study Group
Topic: Motivation
Replies: 34
Views: 175

Re: Motivation

I felt the same as you, and having it online made it feel so much less like a real class and more like a Khan Academy course. I think being in the GroupMe and knowing other people were experiencing the same things as me kept me motivated. Can you post the GroupMe link on here or is there already a ...
by AlyssaMaynard1C
Mon Jan 25, 2021 11:49 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: shifts left or right
Replies: 23
Views: 83

Re: shifts left or right

sabrina ghalambor 2J wrote:shifting to the left favors reactant production, and shifting to the right favors product production!

Do we do these tests to figure out where the reaction is shifting then? Is this the only way to tell?
by AlyssaMaynard1C
Sun Jan 17, 2021 3:16 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling hw 5
Replies: 14
Views: 99

Re: Sapling hw 5

Is the week 1 homework due tonight or next sunday, I'm slightly confused. The homework is due on the 17th, hope this helps! Hi, quick question. So does that mean that today (Sunday, Jan 10) is considered to be Sunday of Week 1 and not Sunday of Week 2? Week 2 sunday is the day before Week 3 starts!
by AlyssaMaynard1C
Sun Jan 17, 2021 3:15 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: shifts left or right
Replies: 23
Views: 83

Re: shifts left or right

Hi, I know that when Q<K then its a forward reaction and it shift right. It shifts left when it is the opposite. But, what exactly does this shift indicate? I know it's important to know whether it is a forward or reverse reaction but what is the importance of identifying the shift? Do we always ne...
by AlyssaMaynard1C
Sun Jan 17, 2021 3:15 pm
Forum: Student Social/Study Group
Topic: Motivation
Replies: 34
Views: 175

Re: Motivation

I felt the same as you, and having it online made it feel so much less like a real class and more like a Khan Academy course. I think being in the GroupMe and knowing other people were experiencing the same things as me kept me motivated. Can you post the GroupMe link on here or is there already a ...
by AlyssaMaynard1C
Sun Jan 17, 2021 3:12 pm
Forum: Administrative Questions and Class Announcements
Topic: Posting on Chem Community
Replies: 6
Views: 55

Re: Posting on Chem Community

hi! I had a quick question. I am not sure if this was already explained, but does it matter which section we post under? Like if we accidentally post in the Chem 14A section will it not count towards our total posts? thank you! How would we know if we posted in the wrong section? As long as you res...
by AlyssaMaynard1C
Sun Jan 17, 2021 3:10 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterms
Replies: 24
Views: 66

Re: Midterms

Anya Holbrook 1E wrote:Do we know if the midterms are going to be administered during discussion like 14A or are we going to be taking them during lecture?

I believe they will be during discussion section and we will have 50 min to complete them. This class is the same structure as 14A.
by AlyssaMaynard1C
Sun Jan 10, 2021 6:01 pm
Forum: Student Social/Study Group
Topic: Thoughts on Switching Majors?
Replies: 31
Views: 288

Re: Thoughts on Switching Majors?

you should try taking different classes/GEs in areas of study that you might be interested in. I think the more you try different things, the more you'll get an idea for what you want to do. UCLA has such a profound program for a multitude of art forms, every student at UCLA should take at least on...
by AlyssaMaynard1C
Sun Jan 10, 2021 6:00 pm
Forum: Student Social/Study Group
Topic: Thoughts on Switching Majors?
Replies: 31
Views: 288

Re: Thoughts on Switching Majors?

Hey! I'm an Environmental Science major and I chose it because I want to restore the natural world and bring awareness to the pitfalls of our learned bad behavior/toxic practices. Chemistry is in no way my strong suit, but it's required for my major to be a well rounded scientist and I have to find ...
by AlyssaMaynard1C
Sun Jan 10, 2021 5:56 pm
Forum: Student Social/Study Group
Topic: Study Habits
Replies: 96
Views: 321

Re: Study Habits

Hi! I've found that my biggest problem with studying is I never spend enough time on the stuff I'm shaky on. I like going through concepts I know how to do, just to confirm I do, but it ends up taking way too much time. While it can be daunting to do practice problems on concepts you don't like/fin...
by AlyssaMaynard1C
Sun Jan 10, 2021 5:53 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling hw 5
Replies: 14
Views: 99

Re: Sapling hw 5

Is the week 1 homework due tonight or next sunday, I'm slightly confused.
by AlyssaMaynard1C
Sun Jan 10, 2021 5:52 pm
Forum: General Science Questions
Topic: midterm/final
Replies: 12
Views: 62

Re: midterm/final

I think it'll be the same as Dr. Lavelle said this is the same format as 14A, but this course has more calculations and problem solving.
by AlyssaMaynard1C
Wed Dec 16, 2020 10:41 am
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 237
Views: 36173

Re: Final Jitters

Does anyone know how to calm down your anxieties before you take this final? Since having test anxiety can be very distracting while you're trying to study or even while you're taking the test itself. Open to any tips:) I hope these strategies helped and now that the final is over, remember you did...
by AlyssaMaynard1C
Sun Dec 06, 2020 4:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Will fundamentals problems be on our final?
Replies: 6
Views: 40

Re: Will fundamentals problems be on our final?

I know that most of the problems will be taken from the textbook, but will the fundamentals problems also be on the final (Outline 1 problems)? Was wondering because I feel like that content is usually used in the later sections anyway. The test is cumulative, so most likely and there is a fundamen...
by AlyssaMaynard1C
Sun Dec 06, 2020 4:06 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Identifying monodentate ligands
Replies: 5
Views: 41

Re: Identifying monodentate ligands

Lets look at the example of water where O has two lone pairs but it still is mono dentate. Due to the orbital geometry of water only one lone pair can have the correct orientation to bond. Additionally, bidentate ligands most of the time require distinct lone pairs on distinct atoms . Is there a li...
by AlyssaMaynard1C
Sun Dec 06, 2020 4:04 pm
Forum: Lewis Acids & Bases
Topic: Acids vs Basis
Replies: 11
Views: 107

Re: Acids vs Basis

Ryan_Kien_1L wrote:I personally think that it depends on your definition of acids and bases (ie. Bronsted-Lowry, Lewis, Arrhenius). So the first thing you'd need to do is identify which definition you're looking for.

Make sure to pay attention to their characteristics as well, if they are a weak or strong acid/base.
by AlyssaMaynard1C
Sun Dec 06, 2020 4:03 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Number With Atoms outside of Coordination Compound
Replies: 8
Views: 41

Re: Coordination Number With Atoms outside of Coordination Compound

When there are extra atoms on the outside of the coordination compound, does that change or effect the coordination number? I am a little confused on figuring out the coordination numbers. Also make sure if there are two compounds in the brackets in parenthesis, like [(compound6)(compound2)4], then...
by AlyssaMaynard1C
Sun Dec 06, 2020 4:01 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Number With Atoms outside of Coordination Compound
Replies: 8
Views: 41

Re: Coordination Number With Atoms outside of Coordination Compound

When there are extra atoms on the outside of the coordination compound, does that change or effect the coordination number? I am a little confused on figuring out the coordination numbers. The coordination number only has to do with the subscript numbers inside the brackets, but outside of the pare...
by AlyssaMaynard1C
Sun Nov 29, 2020 1:14 pm
Forum: Student Social/Study Group
Topic: Final Study
Replies: 32
Views: 220

Re: Final Study

I know it's really soon, especially since we just got back our midterm scores, but when are y'all going to start studying for the final? I was thinking of starting to review the first couple topics by Monday since we're still going to have content that lasts all the way till 2 days before the final...
by AlyssaMaynard1C
Sun Nov 29, 2020 1:12 pm
Forum: Resonance Structures
Topic: Sapling #17
Replies: 4
Views: 30

Re: Sapling #17

On Sapling #17 (Draw the three possible structures of C3H4), why are the three structures not resonance of one another? Do they not contribute equally to chemical bonding? All three structures don't have resonance because they are each different shapes that occur naturally, so they can't be combine...
by AlyssaMaynard1C
Sun Nov 29, 2020 1:11 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: pi and sigma bonds
Replies: 17
Views: 122

Re: pi and sigma bonds

An easy way to think about sigma bonds is to remember that a SINGLE bond is denoted by a SIGMA bond. If a molecule has multiple bonds, like a double bond or a triple bond, then only one of the bonds will be a sigma bond and the other bonds will be pi bonds. For example, a double bond has one sigma ...
by AlyssaMaynard1C
Sun Nov 29, 2020 1:09 pm
Forum: General Science Questions
Topic: Grade Breakdown
Replies: 32
Views: 371

Re: Grade Breakdown

I don't think he mentions anything on this, but he does say 50% or higher is required to pass with a C- or higher. I saw that too and was so confused... He is saying if you earn a 50% in the class you automatically pass? No,, if you earn a 50% or more on homework you will be able to pass with the h...
by AlyssaMaynard1C
Sun Nov 29, 2020 1:07 pm
Forum: Lewis Structures
Topic: Electron Density
Replies: 14
Views: 132

Re: Electron Density

Electron density refers to the probability that an atom would be found in any given region of an orbital. And to answer your second question, I believe that any area where an electron could be found would be considered a region of electron density. Does electron density also contribute to the polar...
by AlyssaMaynard1C
Sun Nov 22, 2020 6:24 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: London Forces [ENDORSED]
Replies: 19
Views: 147

Re: London Forces [ENDORSED]

emilyyribarren1k wrote:Are London Forces found in interactions between every type of molecule? Basically, are they always found in some capacity during intermolecular interactions?

Yes and they're also called Van der Waals forces if you ever see that name too!
by AlyssaMaynard1C
Sun Nov 22, 2020 6:23 pm
Forum: Lewis Structures
Topic: Electron Density
Replies: 14
Views: 132

Re: Electron Density

Electron density refers to the probability that an atom would be found in any given region of an orbital. And to answer your second question, I believe that any area where an electron could be found would be considered a region of electron density. Does electron density also contribute to the polar...
by AlyssaMaynard1C
Sun Nov 22, 2020 6:22 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: H-Bonding clarification
Replies: 7
Views: 119

Re: H-Bonding clarification

aashmi_agrawal_3j wrote:The hydrogen just needs to be bonded to N O or F. The lone pairs on N O or F are not relevant.

Are N O and F the only ones that can bond because they are the most electronegative?
by AlyssaMaynard1C
Sun Nov 22, 2020 6:20 pm
Forum: Student Social/Study Group
Topic: Midterm 2
Replies: 9
Views: 77

Re: Midterm 2

Last midterm, the grades were released on the tuesday or wednesday the week after the exam. All the questions are all or nothing for the points, so it should be easier to grade as there is no partial credit.
by AlyssaMaynard1C
Sun Nov 22, 2020 6:17 pm
Forum: Resonance Structures
Topic: bond character
Replies: 8
Views: 41

Re: bond character

I'm confused on the hydrogen bonding question, what are the rules that apply to h bonds? Does anyone know how to remember them? Hi Alyssa! To add onto what Gina mentioned, take into account the dipoles of those atoms. For example, in CH4, the H atoms don't have any dipole moments so they can't hydr...
by AlyssaMaynard1C
Sun Nov 15, 2020 5:42 pm
Forum: General Science Questions
Topic: Midterm #2
Replies: 11
Views: 84

Re: Midterm #2

My TA said "Midterm 2 covers all material after MT1 to the end of Outline 3 (Chemical Bonds)" in an email asking the topics for midterm 2, hope this helps!
by AlyssaMaynard1C
Sun Nov 15, 2020 5:27 pm
Forum: General Science Questions
Topic: Midterm #2
Replies: 11
Views: 84

Re: Midterm #2

Make sure to study the end of outline 3 too because some sections might've not covered it in its entirety!
by AlyssaMaynard1C
Sun Nov 15, 2020 5:26 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Atomic Radius
Replies: 7
Views: 67

Re: Ionic vs Atomic Radius

Will we be able to look at a chart on the midterm for the electronegativity and other descriptions?
by AlyssaMaynard1C
Sun Nov 15, 2020 5:25 pm
Forum: Resonance Structures
Topic: bond character
Replies: 8
Views: 41

Re: bond character

I'm confused on the hydrogen bonding question, what are the rules that apply to h bonds? Does anyone know how to remember them?
by AlyssaMaynard1C
Sun Nov 08, 2020 1:42 pm
Forum: Octet Exceptions
Topic: Octet rule
Replies: 9
Views: 67

Re: Octet rule

Hi! The octet rule refers to the tendency of atoms to prefer to have 8 electrons in the valence shell. When atoms have fewer than 8 electrons, they tend to react and form more stable compounds. There are a few exceptions that Lavelle went over in previous lectures. Make sure to remember those! I ho...
by AlyssaMaynard1C
Sun Nov 08, 2020 1:39 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: F orbitals?
Replies: 21
Views: 136

Re: F orbitals?

Hi! I was doing some of the problems in section 2A and I realized that there were some F orbital problems (in electron configurations). Will we be expected to know the f orbital as well? The f orbital is probably going to be rare for questions because those are elements deep in the periodic table. ...
by AlyssaMaynard1C
Sun Nov 08, 2020 1:18 pm
Forum: Lewis Structures
Topic: Sapling #3
Replies: 10
Views: 88

Re: Sapling #3

I am still struggling to understand how to draw Lewis structures that "minimize formal charge." What is the best way to approach these types of problems? I'm having similar struggles and also assigning the formal charge is challenging for me on sapling. Does anyone know how to assign the ...
by AlyssaMaynard1C
Sun Nov 08, 2020 1:16 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Why is the 4s state filled before the 3d state?
Replies: 14
Views: 123

Re: Why is the 4s state filled before the 3d state?

My TA, Andrew Salmon, talked about the orbitals in discussion this week. It's helpful to draw out the chart making columns of 1-7s, then 2-7p, then 3-7d, and finally 4-7f. From there, lightly draw diagonal arrows over 1s, then 2s, then 2p and 3s, then 3p and 4s, then 3d and 4p and 5s, keep repeatin...
by AlyssaMaynard1C
Fri Nov 06, 2020 2:13 pm
Forum: Lewis Structures
Topic: 2A.1
Replies: 4
Views: 42

Sapling Wk 5 Q 2

Does anyone know how to work the sapling structure tools. I'm trying to solve question 2 on the week 5 hw, "Draw the Lewis structures of the polyatomic ions and assign formal charges." and I'm having trouble assigning the formal charge correctly.
by AlyssaMaynard1C
Thu Nov 05, 2020 9:33 pm
Forum: Administrative Questions and Class Announcements
Topic: Reviewing Answers for Midterm 1
Replies: 13
Views: 133

Re: Reviewing Answers for Midterm 1

Hi! I think he said that he will be reviewing commonly missed questions from midterm 1 and midterm 2 for a final exam review. As of now, I am not sure if we will be able to see our full midterm exam anytime soon. Do we know if there is a set midterm 1 review meeting or will the TAs go over it in se...
by AlyssaMaynard1C
Thu Nov 05, 2020 8:55 pm
Forum: Administrative Questions and Class Announcements
Topic: Fall 2020 Midterm 1 Instructions
Replies: 20
Views: 1087

Re: Fall 2020 Midterm 1 Instructions

SamanyaCMuyunga1K wrote:Do we need to have two cameras?

For this respondus browser we just need to be on zoom on another device that's not the one you're doing the test on. Your sound shouldn't be on during the zoom too.
by AlyssaMaynard1C
Thu Nov 05, 2020 8:54 pm
Forum: General Science Questions
Topic: Grade Breakdown
Replies: 32
Views: 371

Re: Grade Breakdown

Taylor K 2C wrote:Does anyone know Lavelle's grade breakdown/rubric, i.e. how many points equal an A/A-/B/etc.?

Both midterms are only out of 110 points and we have a total of 500 points in the class. So if you aren't happy with your score, there are points to be gained and improve your grade.
by AlyssaMaynard1C
Thu Nov 05, 2020 8:51 pm
Forum: General Science Questions
Topic: Grade Breakdown
Replies: 32
Views: 371

Re: Grade Breakdown

Adrienne Yuh 2C wrote:I don't think he mentions anything on this, but he does say 50% or higher is required to pass with a C- or higher.

I think the 50% is applied to the homework and posting on chemistry community too. If you don't get 50% or more of the total points you can't get above a C-.
by AlyssaMaynard1C
Thu Nov 05, 2020 8:49 pm
Forum: Administrative Questions and Class Announcements
Topic: Fall 2020 Midterm 1 Instructions
Replies: 20
Views: 1087

Re: Fall 2020 Midterm 1 Instructions

lwong Dis1L wrote:What is Midterm 2 going to cover?

Midterm 2 is going to cover everything from halfway through week 4 and week 7 I believe. It's not cumulative though!
by AlyssaMaynard1C
Thu Nov 05, 2020 8:48 pm
Forum: Administrative Questions and Class Announcements
Topic: Fall 2020 Midterm 1 Instructions
Replies: 20
Views: 1087

Re: Fall 2020 Midterm 1 Instructions

Will each question be all or nothing for points? Or how could points be awarded if the answer was almost there? My TA said that partial credit would be given on some questions, but I am not too sure about how many questions have the possibility of partial credit. I'm wondering when we'll be able to...
by AlyssaMaynard1C
Thu Nov 05, 2020 1:58 pm
Forum: Lewis Structures
Topic: Lewis Structure Question
Replies: 4
Views: 24

Re: Lewis Structure Question

Hey I'm pretty sure this has to do with the concept of resonance where all the possible lewis structures are taken into account to create a hybrid as the best estimate. Since we don't know what the actual structure looks like, a combination of all the possibilities is the best guess.
by AlyssaMaynard1C
Thu Nov 05, 2020 1:56 pm
Forum: Resonance Structures
Topic: Resonance Question
Replies: 4
Views: 44

Re: Resonance Question

He explained on Monday that the resonance is a combination of all the possible lewis structures because we don't know for sure what the structure will look like. The hybrid is the best estimate for the shape and length in A of the structure. Hopefully I got this right!
by AlyssaMaynard1C
Thu Nov 05, 2020 1:54 pm
Forum: General Science Questions
Topic: Midterm Grades
Replies: 30
Views: 354

Re: Midterm Grades

They just emailed and the results are on the grade tab in CCLE. Both midterms is out of 110 points and the average was 86%.
by AlyssaMaynard1C
Thu Nov 05, 2020 1:53 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Why is the 4s state filled before the 3d state?
Replies: 14
Views: 123

Re: Why is the 4s state filled before the 3d state?

My TA, Andrew Salmon, talked about the orbitals in discussion this week. It's helpful to draw out the chart making columns of 1-7s, then 2-7p, then 3-7d, and finally 4-7f. From there, lightly draw diagonal arrows over 1s, then 2s, then 2p and 3s, then 3p and 4s, then 3d and 4p and 5s, keep repeating...
by AlyssaMaynard1C
Thu Nov 05, 2020 1:45 pm
Forum: Student Social/Study Group
Topic: Test Anxiety
Replies: 62
Views: 355

Re: Test Anxiety

I have some test anxiety! I usually just like to do the easier problems first, and if I get to stressed from the harder ones I take a minute to sit back and calm down again before going back to working on the problem. I hope this helps! I like to do this also, but I try to not let a question throw ...
by AlyssaMaynard1C
Mon Nov 02, 2020 7:49 pm
Forum: Quantum Numbers and The H-Atom
Topic: Electron excitement
Replies: 4
Views: 23

Re: Electron excitement

Electrons are excited when they absorb energy (like that from a photon of light). I'm not sure there is a way to show on an electron configuration as it is a temporary state. Why is there a difference in writing the ground versus excited state? Would it be easier to use the element followed by the ...
by AlyssaMaynard1C
Mon Nov 02, 2020 7:44 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8746
Views: 1489523

Re: Post All Chemistry Jokes Here

Did you hear oxygen went on a date with potassium? It went OK!
by AlyssaMaynard1C
Mon Nov 02, 2020 7:43 pm
Forum: Administrative Questions and Class Announcements
Topic: Accessing the E-textbook [ENDORSED]
Replies: 107
Views: 7262

Re: Accessing the E-textbook [ENDORSED]

Is purchasing a hard copy of the textbook worth the $190? I have difficulty viewing the textbook well on Sapling's site and like have a physical copy, but it is expensive and if it helps with the exams it would be worth it.
by AlyssaMaynard1C
Mon Nov 02, 2020 7:38 pm
Forum: Administrative Questions and Class Announcements
Topic: Fall 2020 Midterm 1 Instructions
Replies: 20
Views: 1087

Re: Fall 2020 Midterm 1 Instructions

Will each question be all or nothing for points? Or how could points be awarded if the answer was almost there?
by AlyssaMaynard1C
Mon Nov 02, 2020 7:37 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers
Replies: 2
Views: 34

Re: Quantum numbers

Hi!! While I was doing the sapling questions, I was just wondering if we have to memorize the quantum numbers for every subshell or there is a particular way to calculate/figure them out? I'm also confused on this because I try to look for patterns and know which sub shell has which number, but whe...
by AlyssaMaynard1C
Mon Oct 26, 2020 12:01 am
Forum: General Science Questions
Topic: Sapling Homework
Replies: 14
Views: 180

Re: Sapling Homework

So the sapling homework is not due until the end of week 4 now? Including 10 homework problems from week 2, 3, and 4? Do you suggest completing the entire assignment before the midterm (mines tuesday) even if we haven't fully gone over week 4 material? How should I tackle the week 4 questions in or...
by AlyssaMaynard1C
Sun Oct 25, 2020 11:59 pm
Forum: General Science Questions
Topic: Sapling Homework
Replies: 14
Views: 180

Re: Sapling Homework

Jada1J wrote:I was wondering if anyone knows how to take the randomization on the questions off on sapling. I know that Lavelle was saying up to 19 but I think mine is still out of order.

The questions are randomized? I thought they were in order, I'm quite confused.
by AlyssaMaynard1C
Sun Oct 25, 2020 11:58 pm
Forum: General Science Questions
Topic: Sapling Homework
Replies: 14
Views: 180

Re: Sapling Homework

Yes, the Sapling homework is now due on Week 4, which includes Week 2, 3, 4 material (because Week 2 and 3 were supposed to be due Sunday of Week 3 but now Dr. Lavelle added 10 additional problems from Week 4 content). I would suggest to at least attempt to complete all the Sapling homework before ...
by AlyssaMaynard1C
Sun Oct 25, 2020 11:55 pm
Forum: Properties of Light
Topic: Sapling Homework week 2 problem 5
Replies: 11
Views: 137

Re: Sapling Homework week 2 problem 5

Melanie Lin 3B wrote:
idella 1F wrote:Where do you get the 9.33x10^-6 from?

Hi Idella! The problem said that the wavelength was 9.33x10^-4 cm so you have to convert it to meters before plugging it into the E=hc/wavelength. In meters, the wavelength would be 9.33x10^-6.

I'm seeing the wavelength as 851nm on the question
by AlyssaMaynard1C
Sun Oct 25, 2020 11:54 pm
Forum: Properties of Light
Topic: Sapling Homework week 2 problem 5
Replies: 11
Views: 137

Re: Sapling Homework week 2 problem 5

Hi! I think you should try (Planck's constant)(speed of light)/(9.33*10^-6) instead of (Planck's constant)(speed of light)/(9.33*10^-4). When you divide the latter by 100 instead of doing it like the former equation, I believe you get different answers. Hope this helps! If I'm wrong, please correct...
by AlyssaMaynard1C
Sun Oct 11, 2020 8:39 pm
Forum: Empirical & Molecular Formulas
Topic: Sapling Hw #10
Replies: 10
Views: 101

Re: Sapling Hw #10

Hey! I was definitely stuck on this problem for a while too. The first thing I did was write out a chemical equation and check that it was balanced. The next step is to convert the mL of 2-butanone to grams. There should be a given g/mL underneath each molecule in the formula (in my question it was...
by AlyssaMaynard1C
Sun Oct 11, 2020 8:35 pm
Forum: Empirical & Molecular Formulas
Topic: Sapling Hw #10
Replies: 10
Views: 101

Re: Sapling Hw #10

Hey! I was definitely stuck on this problem for a while too. The first thing I did was write out a chemical equation and check that it was balanced. The next step is to convert the mL of 2-butanone to grams. There should be a given g/mL underneath each molecule in the formula (in my question it was...
by AlyssaMaynard1C
Sun Oct 11, 2020 8:12 pm
Forum: Empirical & Molecular Formulas
Topic: Sampling #9
Replies: 7
Views: 66

Re: Sampling #9

Ok so you gotta find how much mass each element is. The easiest elements to find first is C and H. Calculate the molar mass of C and divide it to the molar mass of CO2. From there, multiply the ratio you got for C to the true mass of CO2 (in this case, 2.275g). After that, apply the same method wit...
by AlyssaMaynard1C
Sun Oct 11, 2020 8:00 pm
Forum: Empirical & Molecular Formulas
Topic: Sapling Week 1 #9
Replies: 3
Views: 37

Re: Sapling Week 1 #9

I'm confused on what to do when they give no amount in grams of the oxygen.

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