Search found 12 matches

by Jocelyn_Limas_2G
Thu Mar 16, 2017 8:27 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Gauche conformations
Replies: 2
Views: 387

Re: Gauche conformations

To elaborate, at a UA session today, the UA explained that if the two substituents are "gauche" to each other in a stable conformation, that means that they're next to each other on the Newman projection. (I think they still follow the 60 or 300 degree rule though.)
by Jocelyn_Limas_2G
Thu Mar 16, 2017 8:20 pm
Forum: *Ketones
Topic: Question 2.26 in Organic textbook
Replies: 1
Views: 518

Question 2.26 in Organic textbook

For Question 2.26 (Page 98), I had written the answer as 3,3-dimethylpentan-2-one , but the answer says 3,3-dimethyl-2-pentanone. Would my answer be incorrect, or is it alright either way? Thanks!
by Jocelyn_Limas_2G
Fri Mar 10, 2017 2:52 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Torsional Strain [ENDORSED]
Replies: 5
Views: 621

Re: Torsional Strain [ENDORSED]

I believe so, the Organic Chemistry book says "Torsional strain results from bonds on adjacent atoms being eclipsed".
by Jocelyn_Limas_2G
Thu Mar 02, 2017 10:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018973

Re: Post All Chemistry Jokes Here

One letter makes a difference.
by Jocelyn_Limas_2G
Thu Feb 23, 2017 11:09 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018973

Re: Post All Chemistry Jokes Here

You matter.

Unless you multiply yourself by the speed of light, squared.

Then, you energy.
by Jocelyn_Limas_2G
Thu Feb 16, 2017 1:31 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018973

Re: Post All Chemistry Jokes Here

" Bro 1: Hey do you want to hear a joke about Sodium Hypobromite?
Bro 1: NaBrO
Bro 2: I slapped my neon that one! "
by Jocelyn_Limas_2G
Thu Feb 09, 2017 10:28 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 14.11
Replies: 2
Views: 336

Re: 14.11

They are inert electrodes-- they don't participate in the reaction, they promote the chemical reactions. I believe that they supply/withdraw electrons (?).
by Jocelyn_Limas_2G
Thu Feb 02, 2017 4:07 pm
Forum: Phase Changes & Related Calculations
Topic: Given quantities
Replies: 2
Views: 330

Re: Given quantities

On the formula sheet, I believe we're only given those that correspond to water. But if it's for another substance, I think they should put it in the problem.
by Jocelyn_Limas_2G
Thu Feb 02, 2017 3:49 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 13728

Re: Quiz 1 Preparation Answers

#8 on Quiz 1 Preparation says, "For reaction: 2C+2H2=C2H4, DeltaH= +52.3 kJ/mol and DeltaS= -53.07 J/K*mol at 298 K. At what temperature will this reaction be spontaneous?" Initially, I thought the formula needed to solve for the temperature was DeltaG= DeltaH - T*DeltaS but then I saw th...
by Jocelyn_Limas_2G
Wed Jan 25, 2017 11:04 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Molecules and Disorder
Replies: 1
Views: 227

Molecules and Disorder

I completed practice question #23 for chapter 9, and the solutions stated that one of the molecule choices was incorrect because "all groups attached...are identical". This may be a stretch, but I was wondering if polarity had any correlation with disorder?
by Jocelyn_Limas_2G
Thu Jan 19, 2017 1:02 am
Forum: Phase Changes & Related Calculations
Topic: Course Reader clarification [ENDORSED]
Replies: 2
Views: 281

Course Reader clarification [ENDORSED]

Can I please get clarification on using an integral to sum an infinite number of steps? I was wondering if we will ever need to know how to derive w, work, for the exams/quizzes.
by Jocelyn_Limas_2G
Thu Jan 12, 2017 11:39 pm
Forum: Phase Changes & Related Calculations
Topic: Bond Enthalpy and Enthalpy of Formation
Replies: 4
Views: 408

Re: Bond Enthalpy and Enthalpy of Formation

If the standard enthalpy of formation is not found on the tables given, is it then safe to assume that it equals 0?

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