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: 699
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: 569
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: 550
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: 493
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: 552
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: 9651
- Views: 3885081
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: 405
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: 641
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: 511
VIDEO: Calculate pH of KOH
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: 931
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?