## Search found 13 matches

Thu Mar 10, 2016 2:12 pm
Forum: *Alcohols
Topic: Winter Final Exam 2015 9B
Replies: 2
Views: 644

### Winter Final Exam 2015 9B

For the Fructose structure, how come they have hydroxy- instead of -ol for the OH's? I thought that for -oxy, it was for ethers while OH's stood for alcohols/
Thu Mar 10, 2016 1:27 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Winter Final Exam 2013 4A
Replies: 4
Views: 690

### Winter Final Exam 2013 4A

For the first part of the question, how do we know that n=4? Do we find it through the given equation or do we have to delve deeper?
Fri Mar 04, 2016 10:05 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Questions on Projections
Replies: 1
Views: 320

### Questions on Projections

For week 8 and 9 of Professor Lavelle's Lecture, we've been going on for the positions of compounds such as staggered, eclipsed, etc. What type of questions would be asked as an example?
Sat Feb 27, 2016 6:41 pm
Forum: Second Order Reactions
Topic: Quiz 2 Problem 5
Replies: 1
Views: 341

### Quiz 2 Problem 5

Since we got our workbooks back, I was wondering how for #5 can we determine what order the reaction based on the information. Do we have to know based on the details of the experiment or do we have to look at the units?
Sat Feb 13, 2016 10:29 pm
Forum: General Rate Laws
Topic: Half Lives on Graphs
Replies: 1
Views: 302

### Half Lives on Graphs

I'm still a little confused on how one can find the half life from just looking at a graph and using the plots/data. I think I got a lot of concepts jumbled around in my head, so can anyone give a brief overview on how to do it? Thanks!
Sun Jan 31, 2016 3:37 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond Enthalpies
Replies: 1
Views: 335

### Bond Enthalpies

How come for bond enthalpies, we have to do the sum of reactants minus the sum or products and not the other way around like how we calculate the sum of delta G and delta H?
Sat Jan 23, 2016 8:40 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Equations for 8.27
Replies: 1
Views: 310

### Equations for 8.27

For this problem, it breaks up the two processes into irreversible and isothermic reactions. Which formulas am I supposed to use for each of them?
Sat Jan 16, 2016 1:32 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7826
Views: 1086691

### Re: Chemistry Jokes

What do you do when a chemist dies?

You barium!
Wed Nov 18, 2015 12:28 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quiz 3 Preparation #10
Replies: 1
Views: 333

### Quiz 3 Preparation #10

How would you do the partial pressure in this question? Bromine chloride, bromine, and chlorine gases have reached equilibrium in a container at 500 K according to the reaction, 2 BrCl(g) <--> Br2(g) + Cl2(g). Equilibrium partial pressures are 1.08 bar BrCl, 4.9 bar Br2, and 7.6 bar Cl2. Half the Br...
Fri Nov 06, 2015 5:11 pm
Forum: Administrative Questions and Class Announcements
Topic: Videos Submissions
Replies: 8
Views: 11521

### Videos Submissions

If we want to post a video about Chemistry, what are the guidelines and where do we send it too?
Fri Oct 16, 2015 5:01 pm
Forum: Resonance Structures
Topic: Determining the number of resonance structures
Replies: 1
Views: 346

### Determining the number of resonance structures

Is there a way that we can know how many resonance structures a compound has or do we have to exhaust every possibility every time?
Fri Oct 09, 2015 6:44 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Elements that have irregular orbitals
Replies: 1
Views: 2442

### Elements that have irregular orbitals

After hearing Lavelle's lecture about some elements having an exception to the rule of filling up every energy level (e.g. Chromium and Copper), I was wondering if there was a way to know about these exceptions. It seems pretty random on the table, but is there a way to know if the element is going ...
Fri Oct 02, 2015 8:10 pm
Forum: Molarity, Solutions, Dilutions
Topic: G7
Replies: 2
Views: 1175

### G7

Hey! To be honest, I don't know where to even begin with this problem. If anyone could help me that would be nice!

You need to prepare 510. g of an aqueous solution containing 5.45% KNO3 by mass. Describe how you would prepare the solution and what mass of each component you would use.