## Search found 10 matches

Fri Mar 04, 2016 2:33 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Comparing Conformation Stability
Replies: 2
Views: 417

### Re: Comparing Conformation Stability

http://www.chem.ucla.edu/harding/ec_tutorials/tutorial15.pdf"onclick="window.open(this.href);return false; I found this pdf form the chem department at ucla. It hints at answers to part of your question regarding the chair conformation. Steric strain is when two hydrogens try to occupy the same plac...
Sun Feb 21, 2016 8:03 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Example of a single sided arrow
Replies: 1
Views: 357

### Example of a single sided arrow

In lecture on Friday we were told that a normal curved arrow represents the movement of two electrons and a single sided arrow represents the movement of a single electron. What would be an example when a single sided arrow would be used?
Sun Feb 14, 2016 7:53 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: k for a reaction at equilibrium
Replies: 1
Views: 384

### k for a reaction at equilibrium

Why is it that we cannot say that k=k' at equilibrium?
Fri Feb 05, 2016 5:46 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Question about entropy change formula with change in T
Replies: 1
Views: 303

### Question about entropy change formula with change in T

I am aware that the equation for deltaS=nCln(T2/T1), but is there ever a case where instead of using C you would use R to make the equation deltaS=nRln(T2/T1)? Homework problem 9.13 seems to utilize the latter equation. Why is this? I would assume that we should utilize the fact that Cv=(3/2)R but t...
Fri Feb 05, 2016 2:16 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: The inverse relationship between P and V
Replies: 1
Views: 363

### The inverse relationship between P and V

Are pressure and volume only inversely propprtional for ideal gasses or is this a fact of any gas?
Fri Jan 29, 2016 2:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8223
Views: 1435313

### Re: Chemistry Jokes

chemistry is funny
Fri Jan 22, 2016 4:25 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Reaction Enthalpy given Enthalpy of combistion hmwk8.57
Replies: 1
Views: 253

### Reaction Enthalpy given Enthalpy of combistion hmwk8.57

In the instance of this homework problem and others like it (8.57) the molar coefficients are in fraction form. Is this because we are given the Enthalpy of the hydrocarbon? We want the coefficient of the hydrocarbon to be one. If we were to use whole numbers (so the coefficients to the first chemic...
Sun Jan 10, 2016 3:24 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacity Units
Replies: 2
Views: 452

### Re: Heat Capacity Units

On page 21 of the course reader it lists that the units of Specific Heat Capacity are kJ.°C^-1.g^-1 and Molar Heat Capacity are J.K^-1.mol^-1. As Lavelle also stated K and °C are, to some extent, interchangeable because they are on the same scale, so kJ.°C^-1.g^-1 is equal to kJ.K^-1.g^-1. I am stil...
Tue Nov 24, 2015 4:26 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: VIDEO: Calculate pH of KOH
Replies: 1
Views: 352

### VIDEO: Calculate pH of KOH

Chapter 12 question 28- Calculating pH.mp4 [ 32.05 MiB | Viewed 327 times ]

https://youtu.be/mnJhXHkI5Mk
Tue Oct 06, 2015 5:22 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbitals and shape
Replies: 3
Views: 588

### Re: Orbitals and shape

I am still unclear on the difference between a subshell and an orbital. I understand that subshells are labeled s,d,p,f... and have different shapes, but then what are orbitals?