Search found 30 matches
- Tue Mar 14, 2017 2:29 am
- Forum: Administrative Questions and Class Announcements
- Topic: 1.23 in Introduction to Organic Chemistry Course reader
- Replies: 1
- Views: 472
1.23 in Introduction to Organic Chemistry Course reader
How do you know that those specific isomers that they show in the solution are all the specific isomers? Like is there a tick to doing this when it asks to draw all the isomers?
- Tue Mar 14, 2017 2:26 am
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 906418
Re: Saying Thank You to Dr. Lavelle
Dear Dr. Lavelle,
Thank you for providing an extensive amount of resources to us throughout Chemistry 14A and 14B. I know that you truly want us to learn and out the effort in creating an environment in which we have the tools to fully grasp what we are learning.
All the best
Alexy
Thank you for providing an extensive amount of resources to us throughout Chemistry 14A and 14B. I know that you truly want us to learn and out the effort in creating an environment in which we have the tools to fully grasp what we are learning.
All the best
Alexy
- Mon Mar 06, 2017 10:24 am
- Forum: Administrative Questions and Class Announcements
- Topic: 4.3 page 153
- Replies: 1
- Views: 332
4.3 page 153
Introduction to Organic Chemistry page 153:
Can electrophilic addition reactions have more than two steps/two energy barriers?
Can electrophilic addition reactions have more than two steps/two energy barriers?
- Sun Mar 05, 2017 10:20 am
- Forum: Administrative Questions and Class Announcements
- Topic: 4.1
- Replies: 3
- Views: 576
Re: 4.1
Thank you!
- Sat Mar 04, 2017 6:25 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 4.1
- Replies: 3
- Views: 576
4.1
I don't really understand page 146 in the Introduction to Organic Chemistry textbook. Specifically, what is a Grignard reaction? the wording on this page just confused me and I was wondering is someone could simplify it for me?
- Sun Feb 26, 2017 6:52 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4590706
Re: Post All Chemistry Jokes Here
Did you hear about the chemist who was reading a book about Helium? He just couldn't put it down!
- Mon Feb 20, 2017 10:17 am
- Forum: Student Social/Study Group
- Topic: Quiz
- Replies: 3
- Views: 739
Quiz
Does the quiz only cover up to page 73 in the course reader?
- Mon Feb 20, 2017 10:13 am
- Forum: Zero Order Reactions
- Topic: Rate Laws and Reaction order [ENDORSED]
- Replies: 2
- Views: 2212
Re: Rate Laws and Reaction order [ENDORSED]
Yes it does, Thank You!
- Sat Feb 18, 2017 3:17 pm
- Forum: Zero Order Reactions
- Topic: Rate Laws and Reaction order [ENDORSED]
- Replies: 2
- Views: 2212
Rate Laws and Reaction order [ENDORSED]
On page 621 of the textbook, there is an example of
2O3(g) ----> 3O2(g)
and then it says that the rate law for this reaction is
Rate= k([O3]^2/[O2]
can someone explain how that is the rate law?
Thank you!
2O3(g) ----> 3O2(g)
and then it says that the rate law for this reaction is
Rate= k([O3]^2/[O2]
can someone explain how that is the rate law?
Thank you!
- Fri Feb 17, 2017 11:04 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4590706
Re: Post All Chemistry Jokes Here
In a sports relay race, a chemical kinetics specialist runs slowly, and his group loses the race.
When the chemical kinetics specialist is asked why he ran slowly, his reply was “I always wanted to be the significant rate determining step”
When the chemical kinetics specialist is asked why he ran slowly, his reply was “I always wanted to be the significant rate determining step”
- Sun Feb 12, 2017 11:16 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Chapter 14, Problem 14.19
- Replies: 4
- Views: 1803
14.13
The reaction in 14.13 was as follows: Ce^4+(aq) + I^- (aq) ---> I2 (s) + Ce^3+(aq) I understand that in the final cell Diagram, there needs to be Pt(s) by the cerium because both the oxidized and reduced species are in the same solution (aq). But, in the solutions manual, there was a Pt(s) by the Io...
- Mon Jan 30, 2017 8:29 am
- Forum: General Science Questions
- Topic: Sig Figs with Logs
- Replies: 2
- Views: 1624
9.59 Textbook
in 9.59b, the dissolution of CaF2 I'm water is: CaF2(s)---->CaF2(aq) technically this is increasing the disorder of the system and should have a positive entropy (positive delta S), but the solutions manual shows it to have a negative entropy. Why is that?
- Wed Jan 25, 2017 2:54 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz Topics
- Replies: 10
- Views: 1938
Videos
The video links that Lavelle sent in to review all the math don't work on mine or my friends laptops, I was wondering if they are working for anyone else?
- Wed Jan 18, 2017 6:21 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: 8.93 Textbook [ENDORSED]
- Replies: 1
- Views: 533
8.93 Textbook [ENDORSED]
A.) calculate the work that must be done against the atmosphere for the expansion of the gaseous products in the combustion of 1.00 mol C6H6(l) at 25 degrees celsius and 1.00 bar. B.) Using the data in appendix 2A, calculate the standard enthalpy of the reaction. C.) calculate the change in internal...
- Wed Jan 11, 2017 2:29 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4590706
Re: Post All Chemistry Jokes Here
Q: What emotional disorder does a gas chomatograph suffer from?
A: Separation anxiety.
A: Separation anxiety.
- Mon Nov 28, 2016 3:07 pm
- Forum: Amphoteric Compounds
- Topic: HSO4-
- Replies: 1
- Views: 4509
Re: HSO4-
Yes, it is amphoteric. Here is an example:
HSO4- + HCl <--> H2SO4 + Cl- (HSO4- here acts as a base; it accepts a proton)
HSO4- + OH- <--> SO42- + H2O (HSO4- here acts an acid; it donates a proton)
HSO4- + HCl <--> H2SO4 + Cl- (HSO4- here acts as a base; it accepts a proton)
HSO4- + OH- <--> SO42- + H2O (HSO4- here acts an acid; it donates a proton)
- Fri Nov 25, 2016 12:35 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4590706
- Fri Nov 25, 2016 12:32 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4590706
- Mon Nov 14, 2016 10:12 am
- Forum: Ideal Gases
- Topic: Ideal Gas Law and Equilibrium Constant
- Replies: 7
- Views: 1647
Chemical Equilibrium Part 3 Module
A mixture of 2.5 moles H2O and 100 g of C are placed in a 50 L container and allowed to come to equilibrium subject to the following reaction: C(s) + H2O (g) ⇌ CO (g) + H2 (g) The equilibrium concentration of hydrogen is found to be [H2] = 0.040 M. What is the equilibrium concentration of water, [H2...
- Mon Nov 14, 2016 10:11 am
- Forum: Ideal Gases
- Topic: Ideal Gas Law and Equilibrium Constant
- Replies: 7
- Views: 1647
Chemical Equilibrium Part 3 Module
The equilibrium constant, KP, for the reaction SO2 (g) + O2 (g) ⇌ SO3 (g) at 700 K is 3 x 104. A mixture of SO2, O2, and SO3, each at 65 bars was introduced into a container at 700 K. Is the reaction at equilibrium? If not, does SO3 tend to form or decompose?
- Mon Nov 14, 2016 10:09 am
- Forum: Administrative Questions and Class Announcements
- Topic: Chem 14B enrollment
- Replies: 2
- Views: 1011
Re: Chem 14B enrollment
Yes! You can enroll in both. The only problem is that there aren't a lot of spots open for chem 14B next quarter so not everyone will be able to get in.
- Mon Nov 07, 2016 9:54 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4590706
- Mon Nov 07, 2016 9:47 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Which Diagram to draw in a bond with both elements Z<8 and Z>8 [ENDORSED]
- Replies: 8
- Views: 1766
Re: Which Diagram to draw in a bond with both elements Z<8 and Z>8 [ENDORSED]
Are those dotted lines necessary to draw between the atomic orbitals and the molecular orbitals? Or can we leave them out?
- Mon Oct 31, 2016 4:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4590706
Chem Jokes!!
What do you call a tooth in a glass of water? A one molar solution. What is the name of agent 007's Eskimo cousin? Polar Bond. Q: Why do chemists call helium, curium and barium the medical elements? A: Because if you can't helium or curium, you barium! What did the chemist say when he found two isot...
- Mon Oct 24, 2016 10:38 am
- Forum: Lewis Structures
- Topic: Chapter 3#59
- Replies: 2
- Views: 594
Re: Chapter 3#59
With ClO, there is an odd number of electrons so Cl is going to have a radical on it. Radicals make the compound more reactive.
- Mon Oct 24, 2016 10:14 am
- Forum: Electronegativity
- Topic: Electronegativity
- Replies: 4
- Views: 1104
Re: Electronegativity
No, there isn't any electronegativity values on the periodic table that we are provided with.
- Wed Oct 19, 2016 1:28 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Px, Py, Pz [ENDORSED]
- Replies: 1
- Views: 760
Re: Px, Py, Pz [ENDORSED]
Using P is the same thing as using Px, Py, and Pz. It just helps to use Px, Py, and Pz so that you can fully see how the electrons fill the orbitals. Doing it this way makes it easier to see the lone pairs of electrons.
- Mon Oct 10, 2016 8:38 am
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Uncertainty
- Replies: 11
- Views: 2914
Heisenberg post module assessment #2
The hydrogen atom has a radius of approximately 0.05 nm. Assume that we know the position of an electron to an accuracy of 1 % of the hydrogen radius, calculate the uncertainty in the speed of the electron using the Heisenberg uncertainty principle. I am not really sure where to begin with this ques...
- Tue Oct 04, 2016 12:12 am
- Forum: Properties of Light
- Topic: Textbook Chapter 1, Question 9
- Replies: 1
- Views: 673
Textbook Chapter 1, Question 9
A college student recently had a busy day. Each of the student;s activities on that day (reading, getting a dental x-ray, making popcorn in a microwave oven, and acquiring a suntan) involved radiation from a different part of the electromagnetic spectrum. Complete the following table and match each ...
- Wed Sep 28, 2016 8:23 am
- Forum: Student Social/Study Group
- Topic: Chemistry Jokes
- Replies: 31
- Views: 9179
Re: Chemistry Jokes
What do Batman and sodium have in common? Na-Na-Na-Na-Na-Na-Na-Na What did the Angry electron say when it was compelled? Let me atom! (Here's some chemistry pick up lines as well): Are you made of copper and tellurium? because you're CuTe! You're like an exothermic reaction, you spread your hotness ...