Search found 30 matches

by deniise_garciia
Wed Mar 13, 2019 10:32 am
Forum: Student Social/Study Group
Topic: Curve?
Replies: 6
Views: 100

Re: Curve?

if anyone knows more about this may they please update us, I have this similar question.
by deniise_garciia
Wed Mar 13, 2019 10:28 am
Forum: Second Order Reactions
Topic: Final
Replies: 30
Views: 237

Re: Final

I had this similar question before and someone told me that it will mainly be more on things after the midterm but it will also be cumulative.
by deniise_garciia
Wed Mar 13, 2019 10:26 am
Forum: Student Social/Study Group
Topic: Final
Replies: 24
Views: 231

Re: Final

Thank you Mikka! I wasn't able to find that in the class website.
by deniise_garciia
Wed Mar 13, 2019 10:25 am
Forum: Student Social/Study Group
Topic: Final
Replies: 5
Views: 52

Final

How is anyone going about studying for the final? Is there any plf's or TA's that are holding review session soon? starting this week?
by deniise_garciia
Fri Mar 08, 2019 1:41 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Final
Replies: 3
Views: 33

Final

Does anyone know if the final is cumulative? Or would we mostly be tested on what’s after the midterm?
by deniise_garciia
Fri Mar 08, 2019 1:38 pm
Forum: First Order Reactions
Topic: Order reactions
Replies: 4
Views: 38

Order reactions

How do you know if a reaction is zeroth, first or second order if it is not specified?
by deniise_garciia
Fri Mar 08, 2019 1:37 pm
Forum: Zero Order Reactions
Topic: Reactions Orders
Replies: 2
Views: 27

Reactions Orders

On the final, would Lavelle specify if a reaction is zeroth, first or second order?
by deniise_garciia
Fri Mar 01, 2019 11:53 am
Forum: Balancing Redox Reactions
Topic: Test #2
Replies: 10
Views: 128

Test #2

How do you know to label each element in increasing power? It was a test #2 question.
by deniise_garciia
Fri Mar 01, 2019 11:46 am
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Test #2
Replies: 10
Views: 110

Test #2

Does anyone know when would we get our test #2 back?
by deniise_garciia
Mon Feb 25, 2019 5:18 pm
Forum: General Science Questions
Topic: Test #2
Replies: 2
Views: 57

Test #2

Does anyone know the topics test #2 will cover?
by deniise_garciia
Fri Feb 22, 2019 9:16 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs Free energy
Replies: 5
Views: 43

Gibbs Free energy

How do you know what temperature to use for delta G when it’s not given in the question?
by deniise_garciia
Fri Feb 22, 2019 9:06 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Delta G spontaneity
Replies: 7
Views: 36

Delta G spontaneity

How can you tell if delta G is spontaneous or non spontaneous when it is Temperature dependent?
by deniise_garciia
Fri Feb 22, 2019 7:03 am
Forum: Balancing Redox Reactions
Topic: Redox and Oxidation
Replies: 3
Views: 30

Redox and Oxidation

I still have trouble with redox and oxidation, would someone be kind enough to explain step by step how Lavelle did his in lecture on Wednesday, thanks!
by deniise_garciia
Fri Feb 15, 2019 4:17 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Midterm Grades
Replies: 35
Views: 290

Re: Midterm Grades

Most likely I’m our discussion section. If not, you can email your TA to find out.
by deniise_garciia
Fri Feb 15, 2019 3:55 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs free energy
Replies: 7
Views: 52

Gibbs free energy

How can you tell when deltaG (Gibbs free energy) is spontaneous or non spontaneous?
by deniise_garciia
Fri Feb 15, 2019 3:41 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Lecture Notes
Replies: 1
Views: 27

Lecture Notes

I missed lecture today because of a doctors appointment, I was wondering if anyone can please share their notes with me, I would greatly appreciate it!
by deniise_garciia
Fri Feb 08, 2019 8:11 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Steam vs. Boiled Water
Replies: 2
Views: 37

Re: Steam vs. Boiled Water

Recalling back from what Lavelle mentioned in class, he said, because the enthalpy required to vaporize is higher than the enthalpy required to liquidize, thus steam is hotter than boiled water.
by deniise_garciia
Fri Feb 08, 2019 8:07 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Ideal Gas Laws
Replies: 4
Views: 33

Re: Ideal Gas Laws

How can one tell when you must use the ideal gas law?
by deniise_garciia
Fri Feb 08, 2019 8:06 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Midterm [ENDORSED]
Replies: 48
Views: 631

Re: Midterm [ENDORSED]

Would anyone mind posting some of the help that the TA's and UA's had during this week? I'd greatly appreciate it! the fact that I couldn't go to some is because I commute and its not worth wasting 4 hours of commute only for a 1 hour help. Thanks again!
by deniise_garciia
Fri Feb 01, 2019 9:14 am
Forum: Student Social/Study Group
Topic: Lecture Notes (1/30)
Replies: 4
Views: 91

Re: Lecture Notes (1/30)

Here are my notes also, I like to include the drawings that he puts on the slide along with them lol
IMG_3703.jpeg

IMG_3704.jpeg
by deniise_garciia
Fri Feb 01, 2019 9:00 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 8.65 6th Edition
Replies: 2
Views: 25

Re: 8.65 6th Edition

It's important to note that ∆Hfº of a substance in its most stable form is 0. Some other examples of when they equal 0 are, H2, O2, N2, Cl2, Br2, I2, and F2, so in this case O2 = O, which iis in it's most stable form making it equal to 0.
by deniise_garciia
Fri Feb 01, 2019 8:45 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: w and q
Replies: 1
Views: 29

Re: w and q

Hey Elizabeth, So, ∆U= q + w, when they are (+) or (-), Energy entering a system carries a (+) sign If heat is absorbed by the system then q is > 0 (+) If work is DONE ON A SYSTEM w>0 (+) Energy leaving a system carries a (-) sign giving off energy If heat is GIVEN OFF BY A SYSTEM q<0 (-) If work is...
by deniise_garciia
Fri Feb 01, 2019 8:36 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Question 8.3 6th edition
Replies: 2
Views: 33

Re: Question 8.3 6th edition

Thanks Janice!!
I was also wondering how to go about this problem, thank you for clarifying!
by deniise_garciia
Fri Jan 18, 2019 9:36 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Initial Concentrations of ICE Box and 12.79 (6th Edition)
Replies: 3
Views: 78

Re: Initial Concentrations of ICE Box and 12.79 (6th Edition)

I had this same question, but I assume that the products in an instance that they are not zero is when the question first asks you to find a concentration at equilibrium and there is a follow up question that states that a certain product was added towards the end. As, for the question in the book I...
by deniise_garciia
Fri Jan 18, 2019 9:07 am
Forum: Administrative Questions and Class Announcements
Topic: Studying for First Discussion Test
Replies: 10
Views: 100

Re: Studying for First Discussion Test

Same here!! But I'm planning to study for the test by going over lecture notes and tying them back to my PLF notes (which are very helpful), I'm also trying to teach the topics to a buddy of mine who doesn't know the topics and if I am able to teach it then it'll mean I really learned the topic :), ...
by deniise_garciia
Wed Jan 16, 2019 7:50 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 7th Edition 6A.19
Replies: 2
Views: 68

Re: 7th Edition 6A.19

I'm not sure if this helps or not, but I have the 6th edition and this similar problem appears in my textbook but mine says that H3O+ part (c) is 3.1mmol•L^-1 and when converting it to only moles it gives 0.0031 which is 3.1 x 10^-3. If by any chance this helps.
by deniise_garciia
Fri Jan 11, 2019 9:59 am
Forum: Ideal Gases
Topic: Pv=nRT [ENDORSED]
Replies: 12
Views: 131

Re: Pv=nRT [ENDORSED]

if in any case it is given in Celsius you only have to add 273.15 to the given temp. and it'll give you the Kelvin temp.
by deniise_garciia
Fri Jan 11, 2019 9:52 am
Forum: Ideal Gases
Topic: use
Replies: 8
Views: 63

Re: use

In regards to the question above, when is Kp used?
by deniise_garciia
Fri Jan 11, 2019 9:48 am
Forum: Ideal Gases
Topic: Q and K [ENDORSED]
Replies: 35
Views: 844

Re: Q and K [ENDORSED]

How do you know when to use Q or K, is there a certain calculation? Or would the question specify so?
by deniise_garciia
Fri Jan 11, 2019 9:45 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Converting Kc to Kp
Replies: 4
Views: 55

Re: Converting Kc to Kp

Kp = Kc (RT)^Dn
P = nRT/V
R = 0.0821 L atm/mol K
T = Temperature in K
Dn = tot. mol product - tot. mol reactant

Not sure if this is the way, but I'm also trying to figure this out. Someone correct me if I'm wrong please!

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