Search found 17 matches

by Sophie W
Sun May 27, 2018 11:06 am
Forum: Electronegativity
Topic: Calculating electronegativity
Replies: 10
Views: 267

Re: Calculating electronegativity

pretty sure we should just be going off of the periodic table trends if they aren't one of the FONCI atoms
by Sophie W
Sun May 27, 2018 11:05 am
Forum: Resonance Structures
Topic: Kekulé Structures??
Replies: 6
Views: 227

Re: Kekulé Structures??

Alexander Hari 1L wrote:No, it might be nice to know Kekulé structures, however, for the exams they would want us to write out the entire Lewis Structure

i think the most important thing to know about kekule structures is how to draw resonant structures for molecules that form rings
by Sophie W
Sun May 27, 2018 11:04 am
Forum: Resonance Structures
Topic: ranking
Replies: 11
Views: 329

Re: ranking

you calculate the formal charge of all the atoms, since the most stable structure will see that all atoms have formal charges close to zero
by Sophie W
Sun May 27, 2018 11:01 am
Forum: Balancing Redox Reactions
Topic: Basic and Acidic conditions [ENDORSED]
Replies: 11
Views: 3110

Re: Basic and Acidic conditions [ENDORSED]

Jordanmarshall wrote:why is h+ and h3o+ used to balance the acidic h ?

Because pH is determined by the amount of H+ ions and H+ and H3O+ all provide those ions
by Sophie W
Wed May 09, 2018 4:35 pm
Forum: Ionic & Covalent Bonds
Topic: Midterm Topics [ENDORSED]
Replies: 33
Views: 1555

Re: Midterm Topics [ENDORSED]

yazminedesan1F wrote:
Megan Potter 1G wrote:How far in the periodic table do we need to know for electron configuration stuff? To krypton (so 3d, 4s, 4p)?

Im assuming its only up to the d orbital, not the f orbital.


we had f orbital examples in discussion, so i assume you will have to know.
by Sophie W
Wed May 09, 2018 4:35 pm
Forum: Ionic & Covalent Bonds
Topic: Midterm Topics [ENDORSED]
Replies: 33
Views: 1555

Re: Midterm [ENDORSED]

Maldonado3K wrote:Hello there, I am overthinking everything.. but just to confirm.. our midterm is taking place in CS50 correct? Thanks!

depends on your last name; check the email he sent out
by Sophie W
Sun Apr 29, 2018 9:44 pm
Forum: DeBroglie Equation
Topic: does everything have a wavelength
Replies: 10
Views: 250

Re: does everything have a wavelength

According to DeBroglie: yes everything has a wavelength, but some of them have wavelengths so insubstantial/large that it's difficult to observe wavelike properties from them
by Sophie W
Sun Apr 29, 2018 9:43 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Balmer and Lyman Series
Replies: 9
Views: 460

Re: Balmer and Lyman Series

Pretty sure all we have to know regarding the Balmer/Lyman series in general (not just for test 2) is that they correspond to the visible light spectrum/ultraviolet spectrum and the numbering for atomic spectra (n=2 vs n=2 )
by Sophie W
Sun Apr 29, 2018 9:38 pm
Forum: Photoelectric Effect
Topic: Work function [ENDORSED]
Replies: 6
Views: 257

Re: Work function [ENDORSED]

Work function is the minimum energy required to remove an electron from the surface of a metal which is why you can find the energy of the photon released by subtracting the work function from the kinetic energy of the electron that shot off of the metal
by Sophie W
Sun Apr 29, 2018 9:31 pm
Forum: Einstein Equation
Topic: converting from keV to joules
Replies: 7
Views: 204

Re: converting from keV to joules

I get confused because the list of equations he provides us tells us nano/centi/kilo but doesn't tell us about the other units we have to memorize but the equation sheet also tells you what one eV is equal to so you can just deduce from there
by Sophie W
Sun Apr 15, 2018 10:49 pm
Forum: Balancing Chemical Reactions
Topic: Chemistry Background [ENDORSED]
Replies: 4
Views: 192

Re: Chemistry Background [ENDORSED]

It's definitely crucial, because without knowledge of how to balance equations/find molar masses it would be very difficult to grasp other topics in the future. Being able to perform the fundamental calculations will definitely benefit you in future problem-solving, especially when we get to lab por...
by Sophie W
Sun Apr 15, 2018 10:48 pm
Forum: Balancing Chemical Reactions
Topic: Trick to balance?
Replies: 5
Views: 231

Re: Trick to balance?

A trick that has generally worked for me was to find a "unique" element that perhaps is only present in one product and one reactant and to balance that first, and then balance more "common" elements such as oxygen, hydrogen, etc. around that element!
by Sophie W
Sun Apr 15, 2018 10:46 pm
Forum: Molarity, Solutions, Dilutions
Topic: Practice Problem [ENDORSED]
Replies: 2
Views: 105

Re: Practice Problem [ENDORSED]

You would need to find molar mass because it's basically asking you how much solid KOH to add to the solution. You should first find the number of moles needed to make the molarity of the solution (M = # moles/volume, therefore #moles= M*volume--remembering to convert mL to L). Then you should multi...
by Sophie W
Sun Apr 15, 2018 10:37 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7023
Views: 772033

Re: Post All Chemistry Jokes Here

What's a chemist's dream car?
A Mercedes Benz-ene!
by Sophie W
Sun Apr 15, 2018 10:36 pm
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 28
Views: 15243

Re: How to find my posts

Is there anyway to receive notifications if Prof Lavelle posted?
by Sophie W
Sun Apr 15, 2018 10:33 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 113
Views: 33142

Re: Rusty on High School Chem [ENDORSED]

The TAs also often hold weekly meetings with review sheets that go over material! I know for a fact there are review sessions held every Sunday at Hedrick 125 :)
by Sophie W
Sun Apr 15, 2018 10:30 pm
Forum: Student Social/Study Group
Topic: Study Group
Replies: 8
Views: 327

Re: Study Group

Is there already a groupme formed? If there are enough people interested in making a groupme I'm totally down to organize study sessions.

Go to advanced search