Search found 13 matches

by Iris Feng 2I
Sun Mar 19, 2017 12:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Naming priority
Replies: 3
Views: 443

Re: Naming priority

The -OH group is a functional group, which is prioritized before double/triple bonds. Substituents like alkyls are even lower priority.
by Iris Feng 2I
Tue Mar 14, 2017 1:31 pm
Forum: *Alkanes
Topic: Nomenclature
Replies: 3
Views: 336

Re: Nomenclature

I feel like it would be most important to know neo- and iso-, probably not so much for the other ones listed in the course reader. I remember Dr. Lavelle saying that some of the common names are actually not commonly used anymore (like vinyl I think).
by Iris Feng 2I
Tue Mar 07, 2017 2:48 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015180

Re: Post All Chemistry Jokes Here

What do you call iron blowing in the wind?

Febreeze
by Iris Feng 2I
Mon Feb 27, 2017 7:47 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Midterm Problem 1A
Replies: 1
Views: 331

Re: Midterm Problem 1A

The question asks for standard enthalpy of formation, which is always going to be kJ/mol. By definition, standard enthalpy of formation is "the change in enthalpy when one mole of a substance in the standard state (1 atm of pressure and 298.15 K) is formed from its pure elements under the same ...
by Iris Feng 2I
Tue Feb 21, 2017 10:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15311

Re: Quiz 2 Winter 2017

604735966 wrote:As for number 7, when do we know to use the rearranged integrated rate law and when to use the differential rate law?


You use the integrated rate law when time is involved.
by Iris Feng 2I
Tue Feb 21, 2017 2:30 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015180

Re: Post All Chemistry Jokes Here

What was NaCl arrested for?

A salt.
by Iris Feng 2I
Tue Feb 14, 2017 10:10 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Midterm Winter 2013 problem 5B
Replies: 10
Views: 916

Re: Midterm Winter 2013 problem 5B

Chiao-Wei Cheng 3e wrote:Correct if I'm wrong, I think molar mass is related to molecules quantity, related to the W in S=klnW. Therefore, entropy will increase with the increase of the molar mass.


W is just (# of orientations)^(# of particles), so I don't think W has to do with the molar mass of one single molecule
by Iris Feng 2I
Tue Feb 14, 2017 2:49 am
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: midterm 2015 #4&5 B
Replies: 3
Views: 454

Re: midterm 2015 #4&5 B

It comes from Cv = (3/2)R, given in the formula sheet. It's the molar heat capacity at constant volume for a monoatomic ideal gas.
by Iris Feng 2I
Tue Feb 07, 2017 7:45 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015180

Re: Post All Chemistry Jokes Here

How do you make 24-molar solution?

Put artificial teeth in water.
by Iris Feng 2I
Tue Jan 31, 2017 11:21 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015180

Re: Post All Chemistry Jokes Here

What is a cation afraid of?

A dogion.
by Iris Feng 2I
Thu Jan 26, 2017 4:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015180

Re: Post All Chemistry Jokes Here

H2O is water and H2O2 is hydrogen peroxide. What is H2O4?
Drinking.
by Iris Feng 2I
Wed Jan 18, 2017 3:39 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015180

Re: Post All Chemistry Jokes Here

Two chemists go into a bar. The first one says "I think I'll have an H2O." The second one says "I think I'll have an H2O too" — and he died.
by Iris Feng 2I
Wed Jan 11, 2017 7:57 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015180

Re: Post All Chemistry Jokes Here

I would never try to poison you

Now eat your Pb and jelly sandwich

Go to advanced search