Search found 50 matches

by Lorena_Morales_1K
Sun Mar 07, 2021 11:15 pm
Forum: Student Social/Study Group
Topic: Moving to Westwood soon. Which restaurants should I visit?
Replies: 28
Views: 82

Re: Moving to Westwood soon. Which restaurants should I visit?

meet fresh boba! a little bit on the pricey side but their boba is pretty bomb :)
by Lorena_Morales_1K
Sun Mar 07, 2021 11:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8831
Views: 1496797

Re: Post All Chemistry Jokes Here

How about the chemical workers… are they unionized?
by Lorena_Morales_1K
Sun Mar 07, 2021 11:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8831
Views: 1496797

Re: Post All Chemistry Jokes Here

Don't trust atoms, they make up everything.
by Lorena_Morales_1K
Sun Mar 07, 2021 11:08 pm
Forum: General Rate Laws
Topic: Rate Constant
Replies: 29
Views: 167

Re: Rate Constant

changing the temperature and/or the activation energy changes the rate constant
by Lorena_Morales_1K
Sun Mar 07, 2021 11:04 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: Temperature vs. activation energy
Replies: 21
Views: 526

Re: Temperature vs. activation energy

The relationship between temperature and the reaction rate is proportional; if you increase the temperature, you increase the reaction rate
by Lorena_Morales_1K
Sun Feb 28, 2021 11:36 pm
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: How Electricity is Quantified
Replies: 3
Views: 19

Re: How Electricity is Quantified

Electricity is the flow of electrons within a given system. It can be quantified using charge, current, and potential. Charge is a physical property of matter. Charge causes matter to experience force within a given electromagnetic field. Current is defined as the amount of charge that passes in a ...
by Lorena_Morales_1K
Sun Feb 28, 2021 11:35 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Standard Reduction Potential
Replies: 4
Views: 9

Re: Standard Reduction Potential

what exactly is the standard reduction potential? in simple terms :)
by Lorena_Morales_1K
Sun Feb 28, 2021 11:34 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: coulomb?
Replies: 18
Views: 50

Re: coulomb?

A coulomb is the SI unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere.
by Lorena_Morales_1K
Sun Feb 28, 2021 11:32 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 81
Views: 50797

Re: Chemistry News

some fun facts about electrochemistry :)
https://kids.kiddle.co/Electrochemistry
by Lorena_Morales_1K
Sun Feb 28, 2021 11:31 pm
Forum: General Rate Laws
Topic: Unique Reaction Rates [ENDORSED]
Replies: 35
Views: 79025

Re: Unique Reaction Rates [ENDORSED]

What does a unique reaction rate mean again?
by Lorena_Morales_1K
Sun Feb 21, 2021 11:57 pm
Forum: Administrative Questions and Class Announcements
Topic: 14B Enrollment [ENDORSED]
Replies: 31
Views: 1474

Re: 14B Enrollment [ENDORSED]

Does anyone know when the course Disability Studies 101W will be offered? I dont think it was offered for this spring 2021
by Lorena_Morales_1K
Sun Feb 21, 2021 11:56 pm
Forum: Administrative Questions and Class Announcements
Topic: 14B Enrollment [ENDORSED]
Replies: 31
Views: 1474

Re: 14B Enrollment [ENDORSED]

What exactly is the order of the chem series classes? Like what comes after Chem 14A and Chem 14B?
by Lorena_Morales_1K
Sun Feb 21, 2021 11:54 pm
Forum: Phase Changes & Related Calculations
Topic: Figuring out which one is oxidation and reductionand 5e-
Replies: 3
Views: 11

Re: Figuring out which one is oxidation and reductionand 5e-

I believe the 5e- is for trying to cancel out both sides of the reaction.
by Lorena_Morales_1K
Sun Feb 21, 2021 11:52 pm
Forum: Phase Changes & Related Calculations
Topic: Standard reduction potential E
Replies: 1
Views: 5

Re: Standard reduction potential E

I thought the anode and cathode weren't necessarily things we move but rather distinct areas of the circuit that indicate electron flow? Can someone clarify this please? Thank you!
by Lorena_Morales_1K
Sun Feb 21, 2021 11:50 pm
Forum: Phase Changes & Related Calculations
Topic: Voltage difference
Replies: 5
Views: 17

Re: Voltage difference

Would voltage difference be something we have to calculate on the final?
by Lorena_Morales_1K
Sun Feb 21, 2021 11:50 pm
Forum: Phase Changes & Related Calculations
Topic: oxidation number change
Replies: 3
Views: 15

Re: oxidation number change

I think Lavelle covered it but I dont exactly remember. What exactly is the oxidation number and when is it altered?
Thank you in advance for your help!
by Lorena_Morales_1K
Sun Feb 21, 2021 11:48 pm
Forum: Student Social/Study Group
Topic: Culinary Chemistry
Replies: 81
Views: 493

Re: Culinary Chemistry

This is so fascinating, I am not much of a cook myself but I definitely want to start to cook and make connections to the chemistry we're learning because it sounds super dope.
by Lorena_Morales_1K
Sun Feb 21, 2021 11:47 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student - Part II [ENDORSED]
Replies: 223
Views: 16048

Re: Advice from a Medical Student - Part II [ENDORSED]

This is truly so informative and inspiring, thank you so much for your advice
by Lorena_Morales_1K
Sat Feb 06, 2021 3:23 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy definition
Replies: 27
Views: 74

Re: Entropy definition

how many types of entropy are there? & what exactly is positional (residual) entropy?
by Lorena_Morales_1K
Sat Feb 06, 2021 2:51 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy definition
Replies: 27
Views: 74

Re: Entropy definition

I believe he explained this in lecture but can someone explain why entropy is a maximum at equilibrium?
by Lorena_Morales_1K
Sat Feb 06, 2021 11:19 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Work
Replies: 4
Views: 45

Re: Work

What exactly does it mean when work is positive? Thank you in advance for your help :)
by Lorena_Morales_1K
Sat Jan 30, 2021 2:59 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Ways of Changing the Energy in the System
Replies: 5
Views: 29

Re: Ways of Changing the Energy in the System

After watching the lecture from 01/27/21, I was left confused on what is mean by doing work on the system/ let the system do work on the surroundings and how that affects the energy that is in the system. I feel that this concept is very important and I want to make sure I understand it. Hope someo...
by Lorena_Morales_1K
Sat Jan 30, 2021 2:56 pm
Forum: Phase Changes & Related Calculations
Topic: Endothermic v. Exothermic
Replies: 107
Views: 346

Re: Endothermic v. Exothermic

Why is bond formation exothermic again?
by Lorena_Morales_1K
Sat Jan 30, 2021 2:52 pm
Forum: Calculating Work of Expansion
Topic: Integral
Replies: 9
Views: 163

Re: Integral

It has already been answered but I agree :) it is because the volume is changing as well. We are only dealing with gases when it comes to volume decompression
by Lorena_Morales_1K
Sat Jan 30, 2021 2:50 pm
Forum: Calculating Work of Expansion
Topic: Systems at Equilibrium
Replies: 3
Views: 29

Re: Systems at Equilibrium

I think that in a reversible process, every intermediate state between the extremes is an equilibrium state, regardless of the direction of the change. In contrast, an irreversible process is one in which the intermediate states are not equilibrium states, so change occurs spontaneously in only one ...
by Lorena_Morales_1K
Sat Jan 30, 2021 2:29 pm
Forum: Calculating Work of Expansion
Topic: Calculating work given pathways
Replies: 2
Views: 28

Re: Calculating work given pathways

What exactly does Lavelle mean when he said "more work is being done on the system"?
Thank you!
by Lorena_Morales_1K
Sun Jan 24, 2021 11:52 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Neutral Solution
Replies: 9
Views: 76

Re: Neutral Solution

what exactly is autoprotolysis?
by Lorena_Morales_1K
Sun Jan 24, 2021 11:48 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Open Systems
Replies: 15
Views: 226

Re: Open Systems

which equations work on closed systems?
by Lorena_Morales_1K
Sun Jan 24, 2021 11:47 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Open Systems
Replies: 15
Views: 226

Re: Open Systems

what is the difference between open and closed systems?
by Lorena_Morales_1K
Sun Jan 17, 2021 11:44 pm
Forum: Phase Changes & Related Calculations
Topic: Determining Stronger Acids
Replies: 18
Views: 58

Re: Determining Stronger Acids

I think the smaller the pKa, the stronger the acid.
by Lorena_Morales_1K
Sun Jan 17, 2021 11:35 pm
Forum: Ideal Gases
Topic: PV=nRT
Replies: 74
Views: 524

Re: PV=nRT

P=Pressure V=Volume n= #moles
R= gas constant
T= temp
by Lorena_Morales_1K
Sun Jan 17, 2021 11:23 pm
Forum: Ideal Gases
Topic: Q and K relationship
Replies: 22
Views: 131

Re: Q and K relationship

Does anyone have any mnemonics to remember the Q and K relationship better? Hi, Here is a really nice one I learned in one of the workshop sessions: When you write it in terms of K first, then the sign points to the direction the reaction proceeds - if K>Q, reaction proceeds towards the products/fa...
by Lorena_Morales_1K
Sun Jan 17, 2021 11:21 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Remembering Le Chatelier's Principle
Replies: 6
Views: 50

Re: Remembering Le Chatelier's Principle

Some that I feel are easy to remember are that when you add more reactants, equilibrium will shift right (reactants will decrease while products increase); when you add more products, equilibrium will shift left (products will decrease while reactants increase); when you remove reactants, equilibri...
by Lorena_Morales_1K
Sun Jan 17, 2021 11:19 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: When would K be unchanged?
Replies: 31
Views: 108

Re: When would K be unchanged?

Daria Obukhova 2B wrote:The only thing that should cause a change in K value is temperature.

Do you know the more specific definition of why temperature is the only thing that causes a change in K value?
by Lorena_Morales_1K
Sun Jan 17, 2021 11:16 pm
Forum: Ideal Gases
Topic: R Value
Replies: 17
Views: 91

Re: R Value

What exactly is the complete definition of the R value?
by Lorena_Morales_1K
Sun Jan 17, 2021 11:15 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Posts in 14B
Replies: 160
Views: 2424

Re: Chemistry Posts in 14B

Hello, perhaps this was asked already, but we only have to do 5 chemistry community comments per week correct?
by Lorena_Morales_1K
Sun Jan 10, 2021 9:44 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Posts in 14B
Replies: 160
Views: 2424

Re: Chemistry Posts in 14B

What weeks will the first midterm cover?
by Lorena_Morales_1K
Sun Jan 10, 2021 9:43 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Posts in 14B
Replies: 160
Views: 2424

Re: Chemistry Posts in 14B

Chem_Mod wrote:Great you asked!

Same account.
This means your total posts would need to be minimum 100 posts by the end of Chem 14B.


Thank you for answering this question! I had also been wondering the same thing :)
by Lorena_Morales_1K
Sun Jan 10, 2021 9:37 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Posts in 14B
Replies: 160
Views: 2424

Re: Chemistry Posts in 14B

Giselle_zamora_1L wrote:Should we add our discussion section to our name or is our UID enough?


I think your UID is enough, but I definitely recommend adding your discussion section so that there are no inconveniences, and your TA is able to find and input your Chemistry Community posts faster into the gradebook.
by Lorena_Morales_1K
Sun Jan 10, 2021 9:33 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Posts in 14B
Replies: 160
Views: 2424

Re: Chemistry Posts in 14B

Will our posts be inputted into the gradebook weekly or will they all be inputted at the end of the winter quarter?
by Lorena_Morales_1K
Sun Jan 10, 2021 9:28 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Posts in 14B
Replies: 160
Views: 2424

Re: Chemistry Posts in 14B

Hi, I had a different professor for 14A in the fall and I'm wondering about the definition of the chemistry community posts. must we create 5 new topics, or does a post also mean replying to another's question? Also, How do we see how many post we created. thanks Hi! This is also my first time with...
by Lorena_Morales_1K
Sat Dec 05, 2020 8:39 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: polar v nonpolar molecules
Replies: 30
Views: 181

Re: polar v nonpolar molecules

How would you differentiate polar and nonpolar molecules? Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each ...
by Lorena_Morales_1K
Sat Dec 05, 2020 8:27 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Numbers
Replies: 8
Views: 79

Re: Coordination Numbers

Coordination numbers are the numbers of bonds ligands forms with the transitional metal. Basically, they are the number of ligands bonded to TM. If you are still confused I think you should rewatch the Monday lecture (specifically the coordination compound part), Dr. Lavelle goes into dept about co...
by Lorena_Morales_1K
Sat Dec 05, 2020 8:25 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: chelating ligands [ENDORSED]
Replies: 31
Views: 7410

Re: chelating ligands [ENDORSED]

Hi!

Perhaps someone else has already asked this but I was wondering, what exactly is a chelating ligand? :(
by Lorena_Morales_1K
Sat Dec 05, 2020 8:23 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 344
Views: 140207

Re: Saying Thank You to Dr. Lavelle

Dear Dr. Lavelle, Thank you so much for always making the smile in the beginning of lecture,AND at the end of lecture. The simplicity of this is very dear to my heart. A smile goes a very long way, especially during these frightening times, so thank you so much. Warm Regards, Lorena Morales Sandoval
by Lorena_Morales_1K
Sat Dec 05, 2020 8:21 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student - Part II [ENDORSED]
Replies: 223
Views: 16048

Re: Advice from a Medical Student - Part II [ENDORSED]

I love your story! super inspiring to see how different and unique every person's journey is, especially yours. thank you so much for sharing <3
by Lorena_Morales_1K
Sat Oct 10, 2020 5:29 pm
Forum: General Science Questions
Topic: Textbook
Replies: 9
Views: 175

Re: Textbook

Im not sure if anyone has had this problem but I bought the Sapling program a while ago and my access codes have not been mailed to me, and I have not been able to access the homework. Is anyone in a similar situation? If so, is there a sort of extension for the homework in this case? Also, to confi...

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