Search found 20 matches
- Mon Mar 20, 2017 3:20 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3592880
- Mon Mar 20, 2017 3:14 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 547691
Re: Saying Thank You to Dr. Lavelle
Thank you for everything Dr. Lavelle. You are by far the best professor I've had in my college career, and I'm very pleased to have learned so much from you. Your dedication to teaching is awesome, and you are very appreciated by me and all other students! Thanks again!
- Sun Mar 12, 2017 10:55 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3592880
- Sun Mar 05, 2017 3:27 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3592880
Re: Post All Chemistry Jokes Here
Makes sense to me
- Sun Feb 19, 2017 11:47 pm
- Forum: General Rate Laws
- Topic: Liquid Scintillation Counter
- Replies: 1
- Views: 501
Re: Liquid Scintillation Counter
A liquid scintillation counter is frequently used for the detection and quantification of radioactivity. It works by measuring the intensity of beta particles.
- Sun Feb 12, 2017 4:56 pm
- Forum: Balancing Redox Reactions
- Topic: balancing redox reactions
- Replies: 2
- Views: 563
Re: balancing redox reactions
You need to make sure that each element is balanced first, and then balance the charges afterwards. If all elements are balanced then you only need to add electrons.
- Sun Feb 05, 2017 9:28 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3592880
Re: Post All Chemistry Jokes Here
What did the thermometer say to the graduated cylinder?
"You may have graduated but I have many degrees."
"You may have graduated but I have many degrees."
- Sun Jan 29, 2017 8:54 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Homework Schedule
- Replies: 2
- Views: 684
Re: Homework Schedule
No I don't think so, but by checking the amount of chapters that we will be going through this quarter, you should be able to find how quickly we will go through chapters on average.
- Sun Jan 22, 2017 11:40 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3592880
- Sun Jan 15, 2017 11:57 pm
- Forum: Phase Changes & Related Calculations
- Topic: Endothermic vs Exothermic Reactions
- Replies: 2
- Views: 687
Re: Endothermic vs Exothermic Reactions
If a reaction has a positive (delta)H, it is endothermic, meaning it requires heat. If it has a negative (delta)H, it is exothermic, meaning it releases heat.
- Sat Dec 03, 2016 7:34 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: What elements are included in n=3 L=2?
- Replies: 1
- Views: 2487
Re: What elements are included in n=3 L=2?
Elements 21 through 30 are included in n=3 l=2. While the third period doesn't have any elements with a d-orbital, the 4th period has the 3d^10 orbital.
- Sat Dec 03, 2016 7:25 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Homework 11.3
- Replies: 1
- Views: 464
Re: Homework 11.3
I may be wrong, but I believe that you should always balance the equations. The problem may have just expected you to balance the equation, and maybe Prof. Lavelle skipped over that step. Have you tried solving the problem with both a balanced and unbalanced equation? Maybe it doesn't make a differe...
- Sat Dec 03, 2016 7:07 pm
- Forum: Lewis Structures
- Topic: 2013 Final Question 3D
- Replies: 2
- Views: 864
2013 Final Question 3D
Does anyone know the answer to question 3D on the 2013 final? It isn't printed in the course reader.
- Sat Nov 26, 2016 2:48 pm
- Forum: Calculating the pH of Salt Solutions
- Topic: Homework 12.65
- Replies: 5
- Views: 1524
Re: Homework 12.65
It would be very helpful to me and other students if you could copy the question in your post. Unfortunately I don't have my book with me and don't know what question you are referring to. I'm not sure what the answer to part D is, but if it is close to 7, I believe that it could still be considered...
- Tue Nov 15, 2016 11:18 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium Shifts
- Replies: 1
- Views: 596
Equilibrium Shifts
I'm having a hard time understanding equilibrium shifting. What does it mean when equilibrium shifts to the right or to the left?
- Sun Oct 30, 2016 5:31 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Homework 4.25 [ENDORSED]
- Replies: 1
- Views: 680
Re: Homework 4.25 [ENDORSED]
You're thinking about the molecule from a two dimensional point of view. Using VSEPR, the molecule is tetrahedral in shape. When looking at a tetrahedral molecule, you will see that the Cl atoms will always be next to each other and the H atoms will be next to each other, resulting in a molecule tha...
- Sun Oct 30, 2016 5:20 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Chapter 4 Question 25
- Replies: 2
- Views: 849
Re: Chapter 4 Question 25
I found this short video to be kind of helpful: https://www.youtube.com/watch?v=PcJRH2ojkZA
After you draw the Lewis structure, you can determine the molecule's shape in 3 dimensions (VSEPR) and as a result, it's polarity. A molecule is polar if a net dipole moment exists.
After you draw the Lewis structure, you can determine the molecule's shape in 3 dimensions (VSEPR) and as a result, it's polarity. A molecule is polar if a net dipole moment exists.
- Sat Oct 22, 2016 11:27 pm
- Forum: SI Units, Unit Conversions
- Topic: Sig Figs [ENDORSED]
- Replies: 16
- Views: 3269
Re: Sig Figs [ENDORSED]
Your example would only have 3 sig figs. In order for that number to have 3 significant zeros, it would have to be written as 5.6000*10^4. Hopefully this helped.
- Sun Oct 09, 2016 7:20 pm
- Forum: Einstein Equation
- Topic: Sif Figs for #4 Fall 2015 Quiz 1 Preparation [ENDORSED]
- Replies: 2
- Views: 831
Re: Sif Figs for #4 Fall 2015 Quiz 1 Preparation [ENDORSED]
I think you are right. Because you are given 3 sig figs in the question, there should be 3 in the answer. I think there might be a typo in the workbook.
- Wed Sep 28, 2016 5:37 pm
- Forum: Student Social/Study Group
- Topic: Dykstra Hall Study Group (Fall 2016)
- Replies: 25
- Views: 3625
Re: Dykstra Hall Study Group (Fall 2016)
Hey guys I'm on the 4th floor in Dykstra and I'd also love to join this group. The first floor lounge would be an awesome place to meet.
Shoot me an email: adamwojnar@aol.com.
Shoot me an email: adamwojnar@aol.com.