Search found 10 matches

by rebecca_handler_1B
Mon Mar 13, 2017 2:16 pm
Forum: *Cyclopropanes and Cyclobutanes
Topic: Rotation of cycloalkanes
Replies: 2
Views: 516

Rotation of cycloalkanes

I understand that cyclopropane does not rotate and cyclobutane does, but I don't understand why that is. Can someone help me understand this?
by rebecca_handler_1B
Mon Mar 06, 2017 4:17 pm
Forum: *Electrophiles
Topic: Identifying the nucleophile or electrophile
Replies: 2
Views: 538

Identifying the nucleophile or electrophile

I was still a little confused on the question he went over at the end of class. How can you tell if the positive or negative side of a molecule is stronger?
by rebecca_handler_1B
Tue Feb 21, 2017 12:20 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15318

Re: Quiz 2 Winter 2017

Can someone explain why question 10 is false? I thought half-lives are always the same. You know this one is a second order reaction because rate=[A]^2, and if you set up two equations using the 2nd order integrated rate law (one for 1.0 M and 0.5 M and the other for 0.5 M and 0.25 M), you can solv...
by rebecca_handler_1B
Tue Feb 14, 2017 5:49 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Heat Capacity
Replies: 3
Views: 292

Re: Heat Capacity

Molar heat capacity also depends on the amount of a substance, while specific heat capacity does not.
by rebecca_handler_1B
Wed Feb 08, 2017 9:10 pm
Forum: General Rate Laws
Topic: First-order reactions
Replies: 2
Views: 344

First-order reactions

Are first-order reactions only with reactions that have 1 reactant? I know he said we'd get to larger reactions later, but I was just wondering about this.
by rebecca_handler_1B
Fri Feb 03, 2017 2:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018743

Re: Post All Chemistry Jokes Here

What do you call a fish made of two sodium atoms?


2-Na!!!
by rebecca_handler_1B
Thu Jan 19, 2017 11:57 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Heat versus Work [ENDORSED]
Replies: 3
Views: 442

Re: Heat versus Work [ENDORSED]

Going off of this, how is it that Internal energy is a state function and work is not if ΔU = q + w? This may not be relevant, but I was confused about why this was during lecture.
by rebecca_handler_1B
Fri Jan 13, 2017 10:11 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Choosing a Method
Replies: 2
Views: 182

Choosing a Method

I'm still a little confused when you should use each type of method (Hess's Law, Bond enthalpies or standard enthalpies of formation). Is there a clear answer or is it more of a preference?

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