Search found 69 matches

by Marley Magee 3A
Tue Jan 19, 2021 3:18 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 1 Inquiries
Replies: 6
Views: 52

Re: Midterm 1 Inquiries

I think we will just have to wait for Dr. Lavelle to send out the info for the midterm in an email. It'll probably come later this week, though!
by Marley Magee 3A
Tue Jan 19, 2021 3:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Thermodynamics on Midterm 1
Replies: 6
Views: 24

Re: Thermodynamics on Midterm 1

I think we just need to wait for Dr. Lavelle to send out an email on the topics that will be covered, so don't worry about it yet! I'm sure the information is coming.
by Marley Magee 3A
Tue Jan 19, 2021 8:47 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: State indications in Chemical Equations
Replies: 4
Views: 16

Re: State indications in Chemical Equations

In a correct chemical reaction all states should be indicated, yes. Either it's (s), (l), or (aq). I think you can assume it's whatever's given to you.
by Marley Magee 3A
Tue Jan 19, 2021 8:44 am
Forum: Administrative Questions and Class Announcements
Topic: Lavelle's Class Website
Replies: 11
Views: 33

Re: Lavelle's Class Website

Yeah because the website seems to be working for everyone else, it's likely your password. Just double check to be sure!
by Marley Magee 3A
Mon Jan 18, 2021 3:39 pm
Forum: Administrative Questions and Class Announcements
Topic: Sapling Grading
Replies: 8
Views: 28

Re: Sapling Grading

I asked this question last quarter too because nobody specified this for me either. To add on to what other people are saying, you can also hit the "hint" button! Asking for hints doesn't affect your score either.
by Marley Magee 3A
Mon Jan 11, 2021 9:20 pm
Forum: Student Social/Study Group
Topic: Favorite TV shows
Replies: 178
Views: 879

Re: Favorite TV shows

If you're a Star Wars fan and like animated kids' shows like Avatar, definitely check out both Star Wars Rebels and Star Wars: The Clone Wars. They're a lot of fun!
by Marley Magee 3A
Mon Jan 11, 2021 9:17 pm
Forum: Student Social/Study Group
Topic: Midterms?
Replies: 14
Views: 116

Re: Midterms?

I was having a hard time finding those dates too! Thanks to everyone who posted the link :)
by Marley Magee 3A
Mon Jan 11, 2021 3:42 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kw
Replies: 9
Views: 50

Re: Kw

They just mean that in general, when we talk about water we mean that's it's neutral with a pH of 7. So if that's true then [OH-] and [H3O+] are equal. Knowing these things, you can often determine how adding an acid or base to water will affect your concentrations.
by Marley Magee 3A
Mon Jan 11, 2021 11:14 am
Forum: Ideal Gases
Topic: Does temperature matter?
Replies: 19
Views: 69

Re: Does temperature matter?

If they just tell you the reaction takes place at some temperature, then you can ignore it a lot of the time depending on what you're looking for (for equilibrium constants it's usually not needed unless you're using PV=nRT). I think it's just there to tell you that they used a uniform temperature f...
by Marley Magee 3A
Mon Jan 11, 2021 11:06 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Textbook Problem 5I.19
Replies: 5
Views: 45

Re: Textbook Problem 5I.19

I think for this one it's saying that 60% has reacted by equilibrium, so your initial concentration is still what they gave you in the first sentence but your equilibrium concentration should be 40% of your initial (because that's what's left). Your change is the 60% of the initial concentration. O...
by Marley Magee 3A
Tue Jan 05, 2021 12:56 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Q vs K
Replies: 12
Views: 66

Re: Q vs K

It was kind of hard for me to remember how to tell if the reaction will shift to the left or right based on Q, so how I remember it is by remembering that for any fraction a bigger denominator will make the value of the fraction smaller, while a bigger numerator makes it bigger. So if Q is smaller t...
by Marley Magee 3A
Tue Jan 05, 2021 12:12 pm
Forum: Student Social/Study Group
Topic: Advice for someone who didn't take 14A with professor Lavelle
Replies: 61
Views: 258

Re: Advice for someone who didn't take 14A with professor Lavelle

Definitely attend those UA sessions according to your needs, so if you want something slower because you're a little confused go to a step-up, and if you just want practice problems go to a workshop. Also, don't be shy to ask questions! The UA's are really nice and helpful.
by Marley Magee 3A
Tue Jan 05, 2021 12:00 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Textbook Problem 5I.19
Replies: 5
Views: 45

Re: Textbook Problem 5I.19

I think for this one it's saying that 60% has reacted by equilibrium, so your initial concentration is still what they gave you in the first sentence but your equilibrium concentration should be 40% of your initial (because that's what's left). Your change is the 60% of the initial concentration.
by Marley Magee 3A
Mon Jan 04, 2021 2:18 pm
Forum: Ideal Gases
Topic: Converting concentration to partial pressure [ENDORSED]
Replies: 3
Views: 48

Re: Converting concentration to partial pressure [ENDORSED]

The only way we have been shown to convert between concentration and partial pressure in class is using PV=nRT. So if you don't have temperature, based on what we know for this class so far, I don't think you can find partial pressure. But maybe it'll be covered in class later!
by Marley Magee 3A
Mon Jan 04, 2021 2:13 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Chemical Equilibrium part 4 post assessment #13
Replies: 2
Views: 22

Re: Chemical Equilibrium part 4 post assessment #13

I don't remember the correct answer to this problem, but I think this is how I did this problem: If you compress the volume of the system, then the pressure increases. There are more moles of gas on the left side of the reaction compared to the right side (2 HI(g) + Cl2(g) versus only 2 HCl(g)). Thi...
by Marley Magee 3A
Mon Dec 07, 2020 2:45 pm
Forum: Administrative Questions and Class Announcements
Topic: Unable to view the lectures
Replies: 12
Views: 114

Re: Unable to view the lectures

Yes, I definitely had that issue while watching the lecture today. Honestly, CCLE has been iffy since yesterday. When it stops I just do something else for a few minutes and then refresh the page. Eventually it comes back up but I don't think there's any quick fix.
by Marley Magee 3A
Mon Dec 07, 2020 2:44 pm
Forum: Conjugate Acids & Bases
Topic: Alkaline
Replies: 15
Views: 87

Re: Alkaline

I think they're very similar, so when someone says that something is alkaline you can assume they're saying it's basic. Alkaline just means something with a pH greater than seven.
by Marley Magee 3A
Mon Dec 07, 2020 2:42 pm
Forum: Student Social/Study Group
Topic: Finals Study Things
Replies: 27
Views: 186

Re: Finals Study Things

Thanks! I didn't get a chance to attend the session but I did hear about it. I'll definitely take a look at that doc!
by Marley Magee 3A
Mon Dec 07, 2020 2:41 pm
Forum: Student Social/Study Group
Topic: Calculating grade
Replies: 24
Views: 249

Re: Calculating grade

I can't see my overall grade either. You can individually add up the assignments and divide it out of the 500 point total to get your grade. Or you can find a website that'll do it for you, and there are a lot of them out there. Here's a straightforward one: https://www.calculator.net/grade-calculat...
by Marley Magee 3A
Mon Dec 07, 2020 2:38 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: pH and pKa Relation
Replies: 3
Views: 36

Re: pH and pKa Relation

You should also remember that pkA is the -logkA. So they are two different things, but are still related and can both help you determine the acidity of a compound.
by Marley Magee 3A
Tue Dec 01, 2020 10:05 pm
Forum: Naming
Topic: Textbook problem 9c.3
Replies: 4
Views: 47

Re: Textbook problem 9c.3

Like other people have been saying, the biggest thing to remember when deciding how many of each atom to have is the charges. Just make sure that when you finish writing it out that the overall charge of what's inside the brackets is equal to the overall charge of everything outside the brackets. It...
by Marley Magee 3A
Tue Dec 01, 2020 10:02 pm
Forum: Student Social/Study Group
Topic: Final Exam Study Tips
Replies: 48
Views: 244

Re: Final Exam Study Tips

The textbook problems on the outlines and the sapling homework are good resources, especially since some textbook problems are recycled for the tests. Also make sure to attend the step up and workshop sessions! I heard that some of the ones for week 10 are going to be review sessions, so those shoul...
by Marley Magee 3A
Tue Dec 01, 2020 11:53 am
Forum: General Science Questions
Topic: study methods/recs
Replies: 37
Views: 279

Re: study methods/recs

Other than the textbook and sapling, the workshops and step up sessions are really helpful. It's a nice review if you're already somewhat familiar with the material but want a bit more practice or have questions. You can access the worksheets again later for more studying too from the google drive.
by Marley Magee 3A
Mon Nov 30, 2020 1:07 pm
Forum: Naming
Topic: Textbook 9C.1
Replies: 6
Views: 73

Re: Textbook 9C.1

I think for this class I would mostly stick to using "cyano" rather than "cyanido" because that's what Dr. Lavelle uses, but I agree that both are valid.
by Marley Magee 3A
Mon Nov 30, 2020 1:04 pm
Forum: Naming
Topic: Using ido or o
Replies: 24
Views: 138

Re: Using ido or o

Like everyone else has basically been saying, I would stick to using -o since it's what Dr. Lavelle uses.
by Marley Magee 3A
Mon Nov 23, 2020 4:15 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2 Grades Chem 14A
Replies: 6
Views: 117

Re: Midterm 2 Grades Chem 14A

I'm not certain that this is true, but I heard in a different thread that they're supposed to be out tomorrow. Last time it was Thursday though, so nothing is guaranteed.
by Marley Magee 3A
Mon Nov 23, 2020 4:12 pm
Forum: Student Social/Study Group
Topic: Post Midterm Blues
Replies: 71
Views: 609

Re: Post Midterm Blues

505352202 wrote:Are the exam grades out yet? Does anyone know?

I read in a different thread that they should be out tomorrow.
by Marley Magee 3A
Mon Nov 23, 2020 4:09 pm
Forum: Student Social/Study Group
Topic: Big Sad: Midterm 2
Replies: 86
Views: 867

Re: Big Sad: Midterm 2

Most people I've talked to felt like they didn't do very well on this midterm compared to the first, so you're not alone! I'm feeling okay about it, but I'm ~very~ anxious to know my score.
by Marley Magee 3A
Mon Nov 23, 2020 4:07 pm
Forum: Student Social/Study Group
Topic: How have your study habits changed?
Replies: 45
Views: 313

Re: How have your study habits changed?

I began attending the step up sessions and actually taking notes. Before, I wouldn't write anything down and just listen, but having the extra practice of writing things down really helps a lot of people to remember things. Even if it's stuff already in my notes, I find that I remember it better to ...
by Marley Magee 3A
Mon Nov 23, 2020 4:05 pm
Forum: Student Social/Study Group
Topic: How to relax after midterms
Replies: 54
Views: 262

Re: How to relax after midterms

Definitely be sure to take some time off! Spend an hour or two doing whatever you want as a break. I like to read, go for walks, and catch up on sleep. Try not to worry too much about your tests. However the test went, you can't do anything about it now.
by Marley Magee 3A
Tue Nov 17, 2020 11:24 am
Forum: Bond Lengths & Energies
Topic: Higher Melting Point
Replies: 5
Views: 49

Re: Higher Melting Point

Another significant thing to remember here is that HCl is a covalent molecule, and NaCl is an ionic molecule. The intermolecular forces between ions are generally stronger than between covalent molecules.
by Marley Magee 3A
Tue Nov 17, 2020 11:20 am
Forum: Student Social/Study Group
Topic: grade worries
Replies: 110
Views: 1171

Re: grade worries

I think about my grades all the time, probably too much of the time. Honestly you've just got to make sure you're trying your best and taking advantage of all the resources offered to you. After that, you've basically done all you can and I think there's some reassurance in that.
by Marley Magee 3A
Tue Nov 17, 2020 11:11 am
Forum: Electronegativity
Topic: 2D.3
Replies: 2
Views: 32

Re: 2D.3

You're right that you have to look at electronegativity here. Barium is quite a bit less electronegative than Beryllium, since it's a lot lower on the periodic table. Therefore, the difference between Bromine and Barium is going to be greater than Bromine and Beryllium, which is why the answer is Ba...
by Marley Magee 3A
Mon Nov 16, 2020 12:12 pm
Forum: Student Social/Study Group
Topic: Exercising Our Minds and Bodies
Replies: 103
Views: 509

Re: Exercising Our Minds and Bodies

I try to go for a walk every day either in the morning or evening, and then a few times a week I go jogging. I find that sitting in front of my laptop can make me really stiff so stretching or yoga is also a great idea.
by Marley Magee 3A
Mon Nov 16, 2020 12:09 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: Ion-Dipole vs Hydrogen Bonding
Replies: 3
Views: 24

Re: Ion-Dipole vs Hydrogen Bonding

It was my understanding that H-bonding is generally stronger than ion-dipole, but I agree that it wasn't super clear from lecture and I'm not completely certain.
by Marley Magee 3A
Wed Nov 11, 2020 3:24 pm
Forum: Lewis Structures
Topic: Formal Charge
Replies: 5
Views: 37

Re: Formal Charge

I would basically always calculate formal charges on each atom. That way you'll know if there's a better way to draw the structure because sometimes there's a way to draw it with each atom having an octet, but a more stable way to draw it with double or triple bonds if the atom can accommodate an ex...
by Marley Magee 3A
Tue Nov 10, 2020 2:16 pm
Forum: Lewis Structures
Topic: Sapling HW Q4
Replies: 9
Views: 104

Re: Sapling HW Q4

We know that in structure with resonance, the actual bond lengths between the atoms are neither single nor double, but somewhere in between (a blend). So based on the observed data for the bond lengths that they tell you, you are meant to reference the chart of expected lengths and identify whether ...
by Marley Magee 3A
Tue Nov 10, 2020 2:07 pm
Forum: Administrative Questions and Class Announcements
Topic: missing discussion
Replies: 4
Views: 42

Re: missing discussion

Most TAs don't take attendance either, so I'm sure they don't mind if you couldn't make it to one.
by Marley Magee 3A
Mon Nov 09, 2020 11:33 am
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizing Power and Covalent Character
Replies: 3
Views: 19

Re: Polarizing Power and Covalent Character

All ionic bonds have some covalent character, depending on how polarizable the anion is and how strong the polarizing power of the cation is. An anion that has a large radius and a lot of electrons is typically very polarizable, meaning that its electrons are more easily pulled into the shared bondi...
by Marley Magee 3A
Mon Nov 09, 2020 11:29 am
Forum: Student Social/Study Group
Topic: Making it through Midterm Results
Replies: 13
Views: 141

Re: Making it through Midterm Results

I would definitely recommend just to start studying early. The week before the test, you should probably just start doing some problems every day. Redoing the textbook problems a couple times is helpful, since they're also on the test, and then attend as many UA sessions as possible. You can ask que...
by Marley Magee 3A
Thu Nov 05, 2020 3:27 pm
Forum: Ionic & Covalent Bonds
Topic: configuration
Replies: 4
Views: 15

Re: configuration

For the ones like Cu and Ag, such as Au, they have different electron configurations because it's more stable to have a full d-orbital so they borrow an electron from the s-orbital. So whenever you see one of those you know to make that change.
by Marley Magee 3A
Wed Nov 04, 2020 5:49 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bonding Question
Replies: 6
Views: 58

Re: Ionic Bonding Question

I think you might have that backwards. It was my understanding that the nonmetals are the ones that gain electrons while the metals lose them, making the nonmetal the anion and the metal the cation.
by Marley Magee 3A
Tue Nov 03, 2020 2:58 pm
Forum: Einstein Equation
Topic: E=pc vs E=hv
Replies: 15
Views: 158

Re: E=pc vs E=hv

I agree that it definitely depends on what you're given—just make sure you know the info the problem gives you and what you want to know. Both equations are valid.
by Marley Magee 3A
Mon Nov 02, 2020 5:38 pm
Forum: General Science Questions
Topic: Midterm Grades
Replies: 30
Views: 344

Re: Midterm Grades

Does anyone know where they'll be posted? Just under grades on CCLE, right?
by Marley Magee 3A
Mon Nov 02, 2020 1:00 pm
Forum: Properties of Light
Topic: Study Advice
Replies: 50
Views: 295

Re: Study Advice

The textbook problems are honestly the best practice because you know the problems might be on the test and the answers are verified. The step up sessions are good if you're really not getting a concept and you want someone to go over it slowly. The workshops, I've found, are more helpful than step ...
by Marley Magee 3A
Thu Oct 29, 2020 4:00 pm
Forum: Student Social/Study Group
Topic: How to relax
Replies: 115
Views: 600

Re: How to relax

I try to go for at least one walk a day, especially since everything is virtual and we're sitting all day—it's nice to move around! I also love to read, so whenever I have free time I do that.
by Marley Magee 3A
Wed Oct 28, 2020 1:32 pm
Forum: Administrative Questions and Class Announcements
Topic: Finding Workshop Answers
Replies: 4
Views: 50

Finding Workshop Answers

Does anybody know where we can get the answers to the UA workshop worksheets? Some of them are in the google drive but a lot of them aren't. Are the ones in the drive the only ones we have?
by Marley Magee 3A
Tue Oct 27, 2020 3:59 pm
Forum: DeBroglie Equation
Topic: Textbook Problem 1B.21
Replies: 2
Views: 28

Re: Textbook Problem 1B.21

You are right that you need to use the de Broglie wavelength equation.
First, the conversion should turn out to be .146 kg and 41.2 m/s.
Plugging in, we get (6.626*10^-34)/(.146)(41.2) = 1.10*10^-34 m
by Marley Magee 3A
Tue Oct 27, 2020 12:53 pm
Forum: *Shrodinger Equation
Topic: Shrodinger Equation on Midterm 1
Replies: 3
Views: 78

Re: Shrodinger Equation on Midterm 1

I agree that you probably only have to know H=. You should probably also know generally how the equation relates to orbitals, electron probability, and the very basic concepts of the s, p, d, and f states— just the stuff covered in last Wednesday lecture.
by Marley Magee 3A
Mon Oct 26, 2020 1:01 pm
Forum: Empirical & Molecular Formulas
Topic: Knowing chemical compounds for midterm
Replies: 2
Views: 34

Re: Knowing chemical compounds for midterm

I asked a similar question, and I was told that we shouldn't have to write formulas like that just from a name. They'll give us the formulas. The ones that you should know are only water, carbon dioxide, etc.
by Marley Magee 3A
Thu Oct 22, 2020 4:08 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm
Replies: 1
Views: 24

Midterm

Does anybody know if we will have to be able to name compounds or write formulas for compounds on the midterm? Some of the practice textbook problems only give you the name of the compound and expect you to already know the formula. For example, F.3 asks for the formula of nitric acid.
Thanks!
by Marley Magee 3A
Thu Oct 22, 2020 4:02 pm
Forum: Student Social/Study Group
Topic: Midterm Prep
Replies: 15
Views: 99

Re: Midterm Prep

I'm just working through all the odd problems in the exercises that have been assigned in the textbook. The step-up and workshop sessions are good review too! I think the midterm doesn't have a set length yet.
by Marley Magee 3A
Wed Oct 21, 2020 1:31 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Balmer and Lyman series
Replies: 2
Views: 32

Re: Balmer and Lyman series

Balmer series ends at n=2 not n=1. It takes greater energy to jump from n=2 to n=1 (Lyman series) which corresponds to a higher frequency, which implies a lower wavelength.
by Marley Magee 3A
Tue Oct 20, 2020 5:29 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Sapling HW Weeks 2-4 #6
Replies: 1
Views: 22

Re: Sapling HW Weeks 2-4 #6

A spectral line could appear every time an electron changes energy level. So if the electron began at n=6, then there should be 5 possible lines.
by Marley Magee 3A
Tue Oct 20, 2020 11:39 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Differences in Rydberg Equation versus equation to find "En" from Friday's lecture
Replies: 3
Views: 22

Re: Differences in Rydberg Equation versus equation to find "En" from Friday's lecture

The Rydberg's equation is just a different version of the second equation that makes a shorter process for finding the frequency. Both of these equations rely on the Bohr frequency condition so they can be used for finding the energy or frequency of the photon that is emitted or absorbed when an ele...
by Marley Magee 3A
Mon Oct 19, 2020 3:23 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic and Molecular Spectroscopy
Replies: 5
Views: 48

Re: Atomic and Molecular Spectroscopy

I think they're the same thing but atomic spectroscopy is looking at atoms and molecular spectroscopy is looking at molecules.
by Marley Magee 3A
Mon Oct 19, 2020 3:20 pm
Forum: General Science Questions
Topic: Webcams
Replies: 17
Views: 128

Re: Webcams

I think they're required for taking the assessments. But I think it was also mentioned that we would be able to use our phone as the webcam if we can't find one to buy or are unable to buy one.
by Marley Magee 3A
Fri Oct 16, 2020 1:50 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic Spectra Video Module Question
Replies: 2
Views: 21

Re: Atomic Spectra Video Module Question

To add on based on my understanding, another way to think about this is is that as the electron is reaching higher and higher quantum levels its energy is getting closer and closer to zero. This can be seen mathematically since a constant (hR) divided by an ever-increasing number (n) approaches zero...
by Marley Magee 3A
Wed Oct 14, 2020 2:12 pm
Forum: Administrative Questions and Class Announcements
Topic: Sapling HW Grade [ENDORSED]
Replies: 10
Views: 416

Sapling HW Grade [ENDORSED]

For the Sapling problems, if we click on the "Hint" button in the right corner, does our score for that problem go down? As in, will we lose points for using hints? Thanks.
by Marley Magee 3A
Wed Oct 14, 2020 12:02 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: notation for heisenberg indeterminancy equation
Replies: 2
Views: 23

Re: notation for heisenberg indeterminancy equation

H bar is shorthand for h/2pi. I'm not certain why that constant specifically is in the equation, but the textbook just says that it's a number that "occurs widely in quantum mechanics." I assume, then, that it's kind of like pi or e in math, but I'm not sure.
by Marley Magee 3A
Wed Oct 14, 2020 11:55 am
Forum: Properties of Light
Topic: Textbook Problem 1A. 3
Replies: 7
Views: 88

Re: Textbook Problem 1A. 3

I'm not entirely certain that this will adequately answer your question, but I read an explanation for this and it turns out the electrical field is related to the amplitude of the EM radiation. So if the frequency has decreased then the wavelength has increased because of their inverse relationship...
by Marley Magee 3A
Mon Oct 12, 2020 10:17 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic Spectra Equation
Replies: 1
Views: 21

Re: Atomic Spectra Equation

I think the module mentioned that that's only for a hydrogen atom, and same with the other version of that equation.
by Marley Magee 3A
Fri Oct 09, 2020 11:00 am
Forum: Molarity, Solutions, Dilutions
Topic: G5
Replies: 8
Views: 110

Re: G5

a) The concentration of Na2CO3 should turn out to be around 0.07968 mol/L. Now we need to find the concentration of just Na from the concentration of Na2CO3. To do this, we know that there are 2 moles of Na per one mole of Na2CO3 (because the subscript of Na is 2). Therefore, we take the concentrati...
by Marley Magee 3A
Thu Oct 08, 2020 11:27 am
Forum: Molarity, Solutions, Dilutions
Topic: G5
Replies: 8
Views: 110

Re: G5

This problem uses the equation c=n/v, which we can rearrange to v=n/c. "v" being the desired volume, "n" the number of moles, and "c" the concentration. So once you have the concentration of of Na2CO3 you convert it to the concentration of just Na in the 250 mL for part...
by Marley Magee 3A
Wed Oct 07, 2020 2:03 pm
Forum: SI Units, Unit Conversions
Topic: Sapling Week 1 HW_problem #10
Replies: 8
Views: 109

Re: Sapling Week 1 HW_problem #10

Just tried out your problem and also got around 68%! Definitely not 69%, I'm not sure how they got that either.
by Marley Magee 3A
Wed Oct 07, 2020 1:52 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reactants
Replies: 9
Views: 55

Re: Limiting Reactants

I was wondering that too! But I agree that there'll probably only be one for our purposes.
by Marley Magee 3A
Wed Oct 07, 2020 1:49 pm
Forum: Limiting Reactant Calculations
Topic: Sapling Question 10
Replies: 4
Views: 68

Re: Sapling Question 10

Hi Faith,
Someone asked that at the office hours for my TA and she said that we would probably not have to derive the formulas from diagrams like that and that we'll be given the equations for tests. It's definitely not something we've learned yet.
by Marley Magee 3A
Wed Oct 07, 2020 1:42 pm
Forum: Student Social/Study Group
Topic: 2H GroupMe?
Replies: 1
Views: 17

2H GroupMe?

Hey guys, just wondering if there was a GroupMe link for discussion 2H yet. If not, I'd love to start one if anybody is interested! Thanks.
by Marley Magee 3A
Wed Oct 07, 2020 1:19 pm
Forum: Molarity, Solutions, Dilutions
Topic: Sapling Week 1 HW_problem #7
Replies: 5
Views: 61

Re: Sapling Week 1 HW_problem #7

That's how I did it for my problem! I just tried it out on your numbers and I got the same answers you wrote in your post.

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