Search found 20 matches

by Adam Wojnar 1K
Mon Mar 20, 2017 3:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 896595

Re: Post All Chemistry Jokes Here

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by Adam Wojnar 1K
Mon Mar 20, 2017 3:14 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 202
Views: 68462

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!
by Adam Wojnar 1K
Sun Mar 12, 2017 10:55 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 896595

Re: Post All Chemistry Jokes Here

Image
by Adam Wojnar 1K
Sun Mar 05, 2017 3:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 896595

Re: Post All Chemistry Jokes Here

Makes sense to me
by Adam Wojnar 1K
Sun Feb 19, 2017 11:47 pm
Forum: General Rate Laws
Topic: Liquid Scintillation Counter
Replies: 1
Views: 221

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.
by Adam Wojnar 1K
Sun Feb 12, 2017 4:56 pm
Forum: Balancing Redox Reactions
Topic: balancing redox reactions
Replies: 2
Views: 229

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.
by Adam Wojnar 1K
Sun Feb 05, 2017 9:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 896595

Re: Post All Chemistry Jokes Here

What did the thermometer say to the graduated cylinder?
"You may have graduated but I have many degrees."
by Adam Wojnar 1K
Sun Jan 29, 2017 8:54 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework Schedule
Replies: 2
Views: 296

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.
by Adam Wojnar 1K
Sun Jan 22, 2017 11:40 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 896595

Re: Post All Chemistry Jokes Here

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POlar.jpg (21.13 KiB) Viewed 4004 times
by Adam Wojnar 1K
Sun Jan 15, 2017 11:57 pm
Forum: Phase Changes & Related Calculations
Topic: Endothermic vs Exothermic Reactions
Replies: 2
Views: 292

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.
by Adam Wojnar 1K
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: 519

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.
by Adam Wojnar 1K
Sat Dec 03, 2016 7:25 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework 11.3
Replies: 1
Views: 195

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...
by Adam Wojnar 1K
Sat Dec 03, 2016 7:07 pm
Forum: Lewis Structures
Topic: 2013 Final Question 3D
Replies: 2
Views: 340

2013 Final Question 3D

Does anyone know the answer to question 3D on the 2013 final? It isn't printed in the course reader.
by Adam Wojnar 1K
Sat Nov 26, 2016 2:48 pm
Forum: Calculating the pH of Salt Solutions
Topic: Homework 12.65
Replies: 5
Views: 822

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...
by Adam Wojnar 1K
Tue Nov 15, 2016 11:18 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium Shifts
Replies: 1
Views: 279

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?
by Adam Wojnar 1K
Sun Oct 30, 2016 5:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Homework 4.25 [ENDORSED]
Replies: 1
Views: 246

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...
by Adam Wojnar 1K
Sun Oct 30, 2016 5:20 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Chapter 4 Question 25
Replies: 2
Views: 340

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.
by Adam Wojnar 1K
Sat Oct 22, 2016 11:27 pm
Forum: SI Units, Unit Conversions
Topic: Sig Figs [ENDORSED]
Replies: 16
Views: 1831

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.
by Adam Wojnar 1K
Sun Oct 09, 2016 7:20 pm
Forum: Einstein Equation
Topic: Sif Figs for #4 Fall 2015 Quiz 1 Preparation [ENDORSED]
Replies: 2
Views: 424

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.
by Adam Wojnar 1K
Wed Sep 28, 2016 5:37 pm
Forum: Student Social/Study Group
Topic: Dykstra Hall Study Group (Fall 2016)
Replies: 25
Views: 1701

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.

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