## Search found 23 matches

Sat Mar 18, 2017 9:32 am
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Details and Review Sessions Winter 2017
Replies: 114
Views: 18060

### Re: Final Exam Details and Review Sessions Winter 2017

Will the review session video be posted soon?

Thanks!
Wed Mar 15, 2017 10:28 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 2008 Midterm HQ1A
Replies: 2
Views: 1070

### Re: 2008 Midterm HQ1A

What is the logic behind dividing it by 30.5 kJ?
Tue Mar 14, 2017 8:40 am
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Details and Review Sessions Winter 2017
Replies: 114
Views: 18060

### Re: Final Exam Details and Review Sessions Winter 2017

Will the final be heavier on Organic Chemistry (because we've been tested less on it) or are all topics equally weighted?
Thu Mar 02, 2017 6:00 pm
Forum: *Alkanes
Topic: Ambidentate nucleophiles
Replies: 2
Views: 439

### Ambidentate nucleophiles

Can someone pls explain what an ambidentate nucleophile is? Thanks!!
Thu Mar 02, 2017 4:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Winter 2017
Replies: 87
Views: 15724

### Re: Midterm Winter 2017

Hello Dr Lavelle,

Will the additional review session tomorrow be recorded?
Sun Feb 19, 2017 2:51 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Chapter 15 Question 19
Replies: 1
Views: 275

### Chapter 15 Question 19

Hello
For this question, i dont understand how they obtained the rate order for reactant B from the table. Can someone please explain this? Thanks!!
Wed Feb 08, 2017 5:12 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Plugging in #s for Q [ENDORSED]
Replies: 2
Views: 398

### Re: Plugging in #s for Q[ENDORSED]

What if both pressure and molarity are involved? Like in problem 14.37 c?

Pt (s) | Cl2 (g, 250 Torr) | HCl (aq, 1.0M) || HCl (aq, 0.85M) | H2 (g, 125 Torr) | Pt (s)

Can you please explain how we're supposed to plug in values for Q if this was the case?
Wed Feb 08, 2017 4:37 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Hw problem 14.35
Replies: 1
Views: 297

### Hw problem 14.35

14.35 Determine the equilibrium constants for the following reactions: b) In3+ (aq) U3+ (aq) yields In2+ (aq) U4+ (aq) I dont understand why they used n=2 for the number of moles of electrons? The half rxns that I got were: In3+ + 1e- --> In2+ and U3+ --> U4+ + 1e- In the solutions manual, the half ...
Mon Feb 06, 2017 12:46 pm
Forum: Administrative Questions and Class Announcements
Topic: Friday Midterm Review
Replies: 1
Views: 306

### Friday Midterm Review

Will the midterm review by Dr. Lavelle on Friday be on Bruincast?
Mon Jan 30, 2017 8:47 pm
Forum: Administrative Questions and Class Announcements
Replies: 130
Views: 17427

### Re: Quiz 1 Preparation Answers

Hello, Can someone please explain Question #9 on the quiz prep? A sample of 1 mol of gas initially at 1 atm and 298 K is heated at constant pressure to 350 K, then the gas is compressed isothermally to its initial volume and finally it is cooled to 298 K at constant volume. Which of the following va...
Thu Jan 26, 2017 11:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz1 Prep
Replies: 1
Views: 330

### Quiz1 Prep

Would the answers for Quiz1 Prep from the course reader be posted?

Thanks!
Sat Jan 21, 2017 4:16 pm
Forum: Phase Changes & Related Calculations
Topic: Enthalpy of Fusion
Replies: 1
Views: 275

### Enthalpy of Fusion

Hello, why is melting called "fusion"? It's kind of contradicting... If someone could pls explain! thanks:)
Thu Jan 12, 2017 9:05 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Sign Conventions
Replies: 1
Views: 298

### Sign Conventions

Hello,

For internal energy and heat, what sign conventions are we using? (example: what is the sign of delta U when the system does work)
If anyone has a list that could help... :) Thank you!!
Mon Nov 28, 2016 11:14 pm
Forum: Conjugate Acids & Bases
Topic: Naming conjugate acids
Replies: 1
Views: 376

### Naming conjugate acids

Hello,
for the homework problems, it asks to name the conjugate acid of a base. How do we know, for example in NH2NH2, where to add the H+?

Thanks!
Sat Nov 26, 2016 7:41 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Details and Review Sessions Fall 2016
Replies: 15
Views: 8293

### Re: Final Exam Details and Review Sessions Fall 2016

Are the UA sessions still taking place next week or just these review sessions?
Mon Nov 14, 2016 8:37 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Naming coordination compounds
Replies: 1
Views: 400

### Naming coordination compounds

Hi,
I was doing #2 from Quiz 3 Prep Fall 2014 and I got confused as to how the oxidation number for cobalt is +2 and how it was named... Can someone please help me with this, thank you:)

2. Name Na[Co (NH3)3Cl3]
Wed Nov 09, 2016 9:20 pm
Forum: Ideal Gases
Topic: Quiz 3 [ENDORSED]
Replies: 2
Views: 545

### Quiz 3[ENDORSED]

Is the review section about the properties of gases from the course reader included in the quiz?
Wed Nov 09, 2016 7:32 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: MO diagrams and Bond order [ENDORSED]
Replies: 2
Views: 562

### MO diagrams and Bond order[ENDORSED]

To calculate the bond order of a molecule, do we always have to draw the molecular orbital diagram or is there a simpler way to calculate it?? Thank you!
Sat Oct 29, 2016 12:57 pm
Forum: Balancing Chemical Reactions
Topic: Balancing Chemical Equations
Replies: 6
Views: 1710

### Re: Balancing Chemical Equations

In balancing chemical rxns for the midterm, are we supposed to know the states of matter for the uncommon compounds or will they be given?
Sat Oct 29, 2016 11:21 am
Forum: Determining Molecular Shape (VSEPR)
Topic: determining the VSEPR shape of the molecule
Replies: 2
Views: 353

### determining the VSEPR shape of the molecule

In determining the VSEPR shape of the molecule, do we use the lewis structure that follows the octet rule or the better structure that reduces the formal charges to it's lowest values or does it not matter?
Tue Oct 25, 2016 6:56 pm
Forum: Lewis Structures
Topic: Lewis Structure (Octet Rule)
Replies: 2
Views: 435

### Re: Lewis Structure (Octet Rule)

Can halogens only form single bonds?
Thu Oct 06, 2016 5:12 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenberg Uncertainty Principle Equation
Replies: 1
Views: 433

### Heisenberg Uncertainty Principle Equation

Is there a special reason why Planck's constant is divided by 4π?
Thu Sep 29, 2016 11:20 pm
Forum: Limiting Reactant Calculations
Topic: Steps for Limiting Reactant Problems
Replies: 4
Views: 3207

### Re: Steps for Limiting Reactant Problems

Can a rxn have two limiting reactants? And is it possible that a rxn has no limiting reactants at all?