Search found 16 matches

by Brian Devlin 3B
Sat Mar 18, 2017 4:47 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: 2015 Final 5A
Replies: 4
Views: 423

Re: 2015 Final 5A

And on part B...2 questions. Are we given the values for E or how did they come up with .40V and .80V? And how do you know that Cd is the oxidation reaction?
by Brian Devlin 3B
Sat Mar 18, 2017 4:39 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Winter 2013 Final 8B
Replies: 3
Views: 606

Re: Winter 2013 Final 8B

How would you describe trans-1-chloro-3-ethylcyclohexane?
by Brian Devlin 3B
Mon Mar 13, 2017 3:19 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019571

Re: Post All Chemistry Jokes Here

My grade in the class
by Brian Devlin 3B
Mon Jan 30, 2017 6:20 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 9.57 (b) Help asap and I'll love you
Replies: 5
Views: 463

Re: 9.57 (b) Help asap and I'll love you

My bad...I edited it, I meant enthalpy
by Brian Devlin 3B
Mon Jan 30, 2017 5:54 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 9.57 (b) Help asap and I'll love you
Replies: 5
Views: 463

9.57 (b) Help asap and I'll love you

When calculating the standard reaction enthalpy of HF in (2F 2 (g) + 2H 2 O (l) -> 4HF (aq) + O 2 (g)) The solution has us basically doing some weird things with HF (what we want) in addition to H2O (reactant). When in the previous problem, all we did was take the number from the Appendix-2A. In oth...
by Brian Devlin 3B
Sat Jan 28, 2017 6:03 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Q 8.53
Replies: 1
Views: 273

Q 8.53

Just a general question
On (b) its asks to "Calculate the internal energy change, deltaU, for the reaction of 1.00 mol CO(g)...
When finding "q" I thought the answer would be in kJ, but the solution proceeds to make it kJ/mol....why?
by Brian Devlin 3B
Sat Dec 03, 2016 7:56 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019571

Re: Post All Chemistry Jokes Here

You know the song Broccoli by D.R.A.M....."All she wanna do is smoke de Broglie".....I'm sorry
by Brian Devlin 3B
Sat Dec 03, 2016 7:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019571

Re: Post All Chemistry Jokes Here

Long Live Lavelle
by Brian Devlin 3B
Sat Dec 03, 2016 7:24 pm
Forum: Naming
Topic: Symbol Order for Compounds [ENDORSED]
Replies: 1
Views: 278

Symbol Order for Compounds [ENDORSED]

When writing out the symbols for compounds such as triamminetrichloronickel(IV) sulfate...the answer is written as [NiCl_3(NH_3)_3]_2 SO_4
So why is the chlorine in front of ammine???
by Brian Devlin 3B
Sat Dec 03, 2016 7:14 pm
Forum: Lewis Structures
Topic: 2013 Final Question 3D
Replies: 2
Views: 359

Re: 2013 Final Question 3D

Here: https://www.google.com/search?q=lewis+structure+of+urea&rlz=1C1TIGY_enUS708US709&espv=2&biw=1396&bih=690&tbm=isch&imgil=DQHrOxbaHuvvCM%253A%253B8FheaeVk-FqyDM%253Bhttps%25253A%25252F%25252Fopentextbc.ca%25252Fchemistry%25252Fchapter%25252F8-2-hybrid-atomic-orbitals%2525...
by Brian Devlin 3B
Sat Dec 03, 2016 7:13 pm
Forum: Lewis Structures
Topic: 2013 Final Question 3D
Replies: 2
Views: 359

Re: 2013 Final Question 3D

There are four lone pairs of electrons. 2 on the oxygen, and 1 for each Nitrogen. You can google "Lewis Structure of urea" and get a clear picture.
by Brian Devlin 3B
Sat Dec 03, 2016 7:03 pm
Forum: General Science Questions
Topic: Radicals
Replies: 1
Views: 300

Re: Radicals

Not sure about VESPR, but radicals in terms of Lewis structures means there is an electron that is not paired.
by Brian Devlin 3B
Thu Nov 03, 2016 1:37 pm
Forum: Lewis Structures
Topic: Best Method for Drawing Lewis Structures
Replies: 1
Views: 297

Re: Best Method for Drawing Lewis Structures

What I have found over the few weeks drawing Lewis structures, I start noticing patterns on how each element "prefers" to bond. The best way to be sure (which can be tedious at times) is to write out the formal charges. My typical steps: Count electrons->bond everything->fill in common pat...
by Brian Devlin 3B
Wed Nov 02, 2016 1:20 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Which Diagram to draw in a bond with both elements Z<8 and Z>8 [ENDORSED]
Replies: 8
Views: 878

Re: Which Diagram to draw in a bond with both elements Z<8 and Z>8 [ENDORSED]

I'm not quite sure if molecular diagrams will be tested on this midterm...someone tell me if they are but I don't think so.

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