Search found 11 matches

by Valeria Quintana 1G
Tue Mar 14, 2017 11:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1020095

Re: Post All Chemistry Jokes Here

true
by Valeria Quintana 1G
Wed Mar 08, 2017 4:19 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1020095

Re: Post All Chemistry Jokes Here

lol
by Valeria Quintana 1G
Thu Mar 02, 2017 10:53 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1020095

Re: Post All Chemistry Jokes Here

everyone after the quiz next week
by Valeria Quintana 1G
Thu Feb 23, 2017 1:20 pm
Forum: Second Order Reactions
Topic: Slow and Fast Steps [ENDORSED]
Replies: 2
Views: 496

Slow and Fast Steps [ENDORSED]

I was wondering if any of you could please explain why the the order for which the slow/fast steps of a reaction matters. Why do we use one way to solve for a reaction that is fast in the first step and is slow in the second step, and another way for a reaction that is slow in the first step and is ...
by Valeria Quintana 1G
Tue Feb 14, 2017 5:08 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1020095

Re: Post All Chemistry Jokes Here

In honor of Valentine's Day
by Valeria Quintana 1G
Thu Feb 09, 2017 4:52 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1020095

Re: Post All Chemistry Jokes Here

A photon checks into a hotel and is asked if he needs any help with his luggage. He says, "No, I'm traveling light."
by Valeria Quintana 1G
Wed Feb 01, 2017 7:23 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 13730

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 tha...
by Valeria Quintana 1G
Thu Jan 26, 2017 2:32 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Degeneracy
Replies: 2
Views: 431

Re: Degeneracy

Degeneracy, also known as W, is the number of ways you can rearrange a molecule. You can find this by drawing the lewis structure of the molecule in question and see how many ways you can draw the structure. Depending on whether the problem specifies if they want you to find the residual entropy of ...
by Valeria Quintana 1G
Thu Jan 19, 2017 5:12 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Work Done by or on the System [ENDORSED]
Replies: 3
Views: 394

Re: Work Done by or on the System [ENDORSED]

This question was asked during discussion today and the TA told us that to make the whole concept of "work done by or on the system" easier to understand, we should think of ourselves as the system. When something is given to us (work done by the system), we are happy (positive value). Whe...
by Valeria Quintana 1G
Thu Jan 12, 2017 6:44 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Cha. 8 HW Problem #57
Replies: 7
Views: 687

Re: Cha. 8 HW Problem #57

also, can you explain why we need to combine the 3 reactions to find the reaction we are looking for? Can't we just plug in the values (-1300, -1560, and -1560) we are given for C2H2, H2, and C2H6 to find the delta H of the reaction from the start without doing all the other work?
by Valeria Quintana 1G
Thu Jan 12, 2017 6:34 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1020095

Re: Post All Chemistry Jokes Here

*me reading all these jokes*: "That was sodium funny, I slapped my neon that one!"

Go to advanced search