Search found 21 matches

by Jasminemay Barcelon 2G
Wed Mar 09, 2016 1:41 am
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Conformational Energy Diagrams
Replies: 2
Views: 478

Conformational Energy Diagrams

In lecture as well as the organic chemistry textbook, we discussed the stability of conformation to be able to find the potential energy. We will be required to know the conformational energy diagrams for various other dihedral angles?
by Jasminemay Barcelon 2G
Sat Mar 05, 2016 6:29 pm
Forum: *Haloalkanes
Topic: Functional Groups [ENDORSED]
Replies: 7
Views: 1611

Re: Functional Groups [ENDORSED]

I believe we do since we covered most of the functional groups within that chart in the course reader and we discussed them in lecture and sections, but if we aren't responsible for them, it doesn't hurt to know them.
by Jasminemay Barcelon 2G
Sat Feb 27, 2016 8:44 pm
Forum: *Nucleophiles
Topic: Determining nucleophilicity
Replies: 5
Views: 958

Re: Determining nucleophilicity

Kelly Huang 3L wrote:What about F?


I believe F is an electrophile as it is a radical. Whereas F-, would be a strong base nucleophile.
by Jasminemay Barcelon 2G
Thu Feb 18, 2016 5:05 pm
Forum: *Nucleophiles
Topic: Determining nucleophilicity
Replies: 5
Views: 958

Determining nucleophilicity

Since a Lewis Acid/Base can be terms used interchangeably with Electrophiles and Nucleophiles, can one use that relationship to determine nucleophilicity? For example, basisity increases across a row from right to left, the strength of a nucleophile does so as well? What else dictates nucleophilicit...
by Jasminemay Barcelon 2G
Sat Feb 13, 2016 11:31 am
Forum: Balancing Redox Reactions
Topic: Oxidation States
Replies: 8
Views: 1060

Re: Oxidation States

I memorized a few oxidation states for the midterm and I somewhat remember how to calculate them from Chem 14A, however I was wondering what other methods you guys implemented in finding the oxidation states for the cathodes and anodes because it took quite a while for me to be sure with my answers.
by Jasminemay Barcelon 2G
Sat Feb 06, 2016 1:47 pm
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: Chapter 14 Excersie 114
Replies: 1
Views: 312

Chapter 14 Excersie 114

It states to estimate the average current through the body with the assumption that delta_G is 10 MJ. I understand how to solve this question, however, with this in mind, I was wondering if these types of applications will be utilized on future quizzes and tests?
by Jasminemay Barcelon 2G
Sat Jan 30, 2016 5:56 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm
Replies: 1
Views: 371

Midterm

I want to get a head start on the rest of the topics to be covered for the midterm, so I was wondering what chapters are we approximately going to complete before the midterm?
by Jasminemay Barcelon 2G
Sat Jan 23, 2016 7:13 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs free energy concept
Replies: 1
Views: 330

Gibbs free energy concept

I just wanted to clarify if the standard state of the reactions must be that the partial pressures of the gases would be 0.1 MPa as well as any other variations would affect calculations?
by Jasminemay Barcelon 2G
Sun Jan 17, 2016 7:52 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8205
Views: 1433328

Re: Chemistry Jokes

Never trust an atom

They make up everything.
by Jasminemay Barcelon 2G
Sat Jan 09, 2016 5:14 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: 8.10 units question
Replies: 3
Views: 505

Re: 8.10 units question

Just to clarify, unless otherwise stated we should always convert Joules just to be safe?
by Jasminemay Barcelon 2G
Sat Dec 05, 2015 8:56 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8205
Views: 1433328

Re: Chemistry Jokes

A little fun while studying for the final,
-What weapon can you make from the elements potassium, nickel, and iron?
~A KNiFe
-Where;s the best place to buy potassium?
~K-Mart
by Jasminemay Barcelon 2G
Sat Nov 28, 2015 10:22 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Fall 2015 Quiz 3 #5
Replies: 1
Views: 368

Fall 2015 Quiz 3 #5

This question was regarding the second part of #5 where it states that you find in a publication that a researcher in China has studied the same reaction at the same temperature, but she wrote the reaction in the form NH 3 (g) <-> N 2 (g) + 3H 2 (g). The original equation being N 2 (g) + 3H 2 (g) <-...
by Jasminemay Barcelon 2G
Sat Nov 21, 2015 7:23 pm
Forum: Administrative Questions and Class Announcements
Topic: Last Class Lecture
Replies: 1
Views: 542

Last Class Lecture

Approximately when will we be finished covering new material? Since it'll be week nine, I just wanted to know so I can plan studying cumulatively.
Thank you!
by Jasminemay Barcelon 2G
Sat Nov 14, 2015 5:01 pm
Forum: Ideal Gases
Topic: Real Gases Clarification
Replies: 1
Views: 403

Real Gases Clarification

So essentially as pressure increases, the volume decreases and approaches zero but never reaches zero and real gases also contain intermolecular forces. This then makes the most ideal gas one with the smallest amount of molecules and the one with the least amount of intermolecular forces, correct?
by Jasminemay Barcelon 2G
Sat Nov 07, 2015 9:46 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Metals
Replies: 1
Views: 290

Metals

I know we have not covered this, but I decided to look further into the types of ligands, or macrocrycles, that are connected to metals. I was wondering if I could get examples of these?
Thank you!
by Jasminemay Barcelon 2G
Wed Nov 04, 2015 5:01 pm
Forum: Administrative Questions and Class Announcements
Topic: Blue book?
Replies: 1
Views: 519

Re: Blue book?

I believe we don't need a blue book. In the link below, they said that all we needed was a pen, calculator, and photo ID. We're also not allowed to bring our backpacks in. https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=157&t=6903&sid=8bbd3d72977901416d102407f5752c41 Hope this helps!
by Jasminemay Barcelon 2G
Sat Oct 31, 2015 9:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Shape Chart
Replies: 1
Views: 439

VSEPR Shape Chart

I decided to make chart when I was determining the shapes and molecules of ions. It really helped me out and I think it could help others as well.
VSEPR.jpg
VSEPR Chart

I just wanted to make sure if everything is correct and if we could use "bent" and "angular" interchangeably?
Thank you!
by Jasminemay Barcelon 2G
Sat Oct 24, 2015 9:31 pm
Forum: Bond Lengths & Energies
Topic: Question 3.101
Replies: 1
Views: 429

Question 3.101

I understand that the isolobal analogy applies to chemical fragments with similar valence-orbital structures that can replace others in the molecule, but I wanted to clarify if it is also because of similar shapes, energy, and number of electrons as well?
by Jasminemay Barcelon 2G
Fri Oct 16, 2015 8:00 pm
Forum: Resonance Structures
Topic: Angstrom Calculation
Replies: 2
Views: 792

Angstrom Calculation

I saw a previous post that concerned this as well, but it didn't fully answer my question. When we went over the N--O bond length in NO3- which equals 1.24 ‎Å in lecture, I was wondering where the angstrom calculation came from?
by Jasminemay Barcelon 2G
Thu Oct 08, 2015 7:44 pm
Forum: Trends in The Periodic Table
Topic: Diagonal Relationships
Replies: 1
Views: 316

Diagonal Relationships

I understand the concept of diagonal relationships of elements as being similar in their chemical properties. Other than this being due to the size of their ions, what else can cause these likenesses?
by Jasminemay Barcelon 2G
Wed Sep 30, 2015 9:07 pm
Forum: DeBroglie Equation
Topic: Lab Detection
Replies: 1
Views: 364

Lab Detection

The worked examples for the De Broglie equation in the course reader asked if the wavelength could be experimentally detected in the lab. The answer being 1.4 x 10^-10 m. Is there any specific measurement for a wavelength that would deem it unverifiable?

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