Search found 23 matches

by Hector_Gutierrez 1J
Wed Mar 15, 2017 1:55 am
Forum: Phase Changes & Related Calculations
Topic: Homework 8.27
Replies: 3
Views: 992

Re: Homework 8.27

For part b, I got -1061.4 J. I used the equation -nRTln(Vf/Vi). I set n=1, 8.314 as the gas constant R, 305 K as my temperature T, my final volume as 6.52 L, and my initial volume as 4.29 L. However, the answer at the back of the book is -326 J. What did I do wrong?
by Hector_Gutierrez 1J
Tue Mar 14, 2017 8:58 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Homework 8.11
Replies: 3
Views: 1135

Re: Homework 8.11

In the answer in the book, it states that part b, reversible expansion, does more work? Why is that so?
by Hector_Gutierrez 1J
Thu Mar 09, 2017 7:26 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz #3
Replies: 6
Views: 644

Re: Quiz #3

Thank you!
by Hector_Gutierrez 1J
Thu Mar 09, 2017 11:11 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Prep answers
Replies: 6
Views: 686

Re: Quiz 3 Prep answers

I'm always wondering where the Quiz 3 practice answers are posted to check my solutions.
by Hector_Gutierrez 1J
Tue Feb 28, 2017 10:19 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013896

Re: Post All Chemistry Jokes Here

Are you made up of a 4 carbon chain? Because you're butyl-ful.
by Hector_Gutierrez 1J
Tue Feb 28, 2017 10:09 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz #3
Replies: 6
Views: 644

Re: Quiz #3

So it will include activation energy, reaction mechanisms, and naming organic compounds?
by Hector_Gutierrez 1J
Wed Feb 22, 2017 12:38 pm
Forum: General Rate Laws
Topic: Units for Reaction Rate and the Rate Constant
Replies: 3
Views: 452

Units for Reaction Rate and the Rate Constant

In general, what are the units for the reaction rate and the rate constant? I mean individually of course as the they are different values.
by Hector_Gutierrez 1J
Wed Feb 22, 2017 11:43 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013896

Re: Post All Chemistry Jokes Here

My tendency to always sleep is directly related to the tendencies of the electrons inside of me, they're always trying to be in their lowest energy state.
by Hector_Gutierrez 1J
Sun Feb 12, 2017 9:41 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Winter 2013 Midterm Q2A
Replies: 10
Views: 758

Re: Winter 2013 Midterm Q2A

I am also having a difficult time trying to figure out how one would derive the equation to solve the problem?
by Hector_Gutierrez 1J
Wed Feb 01, 2017 11:50 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1: Formulas We Need To Know
Replies: 2
Views: 408

Quiz 1: Formulas We Need To Know

Are there any formulas for quiz 1 we need to know that will not be on the formula sheet?
by Hector_Gutierrez 1J
Wed Feb 01, 2017 10:55 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013896

Re: Post All Chemistry Jokes Here

I should probably study for my quiz . . . or NaW
by Hector_Gutierrez 1J
Wed Feb 01, 2017 10:51 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7581
Views: 1013896

Re: Post All Chemistry Jokes Here

Q. Why did the chemistry student fall asleep during?
A. Because it was boron.
by Hector_Gutierrez 1J
Wed Jan 18, 2017 9:11 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz Topics
Replies: 10
Views: 1099

Re: Quiz Topics

As a follow-up question, I wanted to ask whether we will receive some sort of quiz preparation. For Chem 14A, I know we had a quiz booklet with practice problems with solutions, as well as turn-in quizzes. We will have something like that this quarter?
by Hector_Gutierrez 1J
Sat Dec 03, 2016 9:41 am
Forum: Student Social/Study Group
Topic: Sproul Hall Chem14A Study Group
Replies: 30
Views: 2353

Re: Sproul Hall Chem14A Study Group

Does anyone know if the midterms answers were posted anywhere? I'm going over problems from the midterm to study and I'm wondering if there is a way to check my solutions.
by Hector_Gutierrez 1J
Tue Nov 29, 2016 10:49 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: change in temperature
Replies: 2
Views: 354

Re: change in temperature

Does temperature also affect the K value, the equilibrium constant?
by Hector_Gutierrez 1J
Wed Nov 16, 2016 9:09 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Are the coordination numbers just inside of brackets? [ENDORSED]
Replies: 4
Views: 685

Re: Are the coordination numbers just inside of brackets? [ENDORSED]

So what about another example, like [Fe(ox)(CO)2(NH3)]H2O for instance. What would be the coordination number?
by Hector_Gutierrez 1J
Mon Nov 14, 2016 6:42 am
Forum: Student Social/Study Group
Topic: Sproul Hall Chem14A Study Group
Replies: 30
Views: 2353

Re: Sproul Hall Chem14A Study Group

Anyone want to study for Quiz 3 this week?
by Hector_Gutierrez 1J
Sun Nov 06, 2016 3:04 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Molecular Orbital Theory
Replies: 4
Views: 446

Re: Molecular Orbital Theory

Does anyone know any videos or resources that aid in showing how to draw out the molecular orbital energy diagrams?
by Hector_Gutierrez 1J
Mon Oct 24, 2016 10:16 pm
Forum: Lewis Structures
Topic: Lewis Structures Charges Always Balanced?
Replies: 1
Views: 216

Lewis Structures Charges Always Balanced?

Is the ideal Lewis Structure always balanced? To be more specific, will the formal charge on every atom in a molecule always be zero? Or will the most ideal state of a molecule sometimes have atoms with positive or negative formal charges?
by Hector_Gutierrez 1J
Sun Oct 23, 2016 10:14 pm
Forum: Lewis Structures
Topic: Lewis Structures
Replies: 3
Views: 344

Re: Lewis Structures

Joseph Lew 1K wrote:When making a Lewis structure should I assume it is correct if I used the correct number of electrons or should I check formal charge to make sure I have the correct bonds?

You should check the formal charge to ensure that the molecule is at its most ideal state.
by Hector_Gutierrez 1J
Sat Oct 15, 2016 7:41 pm
Forum: Ionic & Covalent Bonds
Topic: Ionization Energy
Replies: 7
Views: 737

Re: Ionization Energy

Is the second ionization energy always more than the first for every atom? The second ionization energy is always stronger because there will be a greater ratio of protons to electrons. During the first ionization of an element there is an equal number of protons and electrons. However, during the ...
by Hector_Gutierrez 1J
Mon Oct 03, 2016 3:00 pm
Forum: Student Social/Study Group
Topic: Sproul Hall Chem14A Study Group
Replies: 30
Views: 2353

Re: Sproul Hall Chem14A Study Group

I like Juan's idea of studying from 7-9pm on the days we have class, which would be Monday, Wednesday, and Friday.
by Hector_Gutierrez 1J
Wed Sep 28, 2016 8:56 pm
Forum: Student Social/Study Group
Topic: Sproul Hall Chem14A Study Group
Replies: 30
Views: 2353

Re: Sproul Hall Chem14A Study Group

I live in Sproul Hall! The first thing that came to mind after the first lecture was that I need people to study with. So hopefully in the very near future we can come up with times to do homework together and study together.

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