Search found 15 matches
- Sun Feb 26, 2017 8:48 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Reaction Mechanism in More Detail
- Replies: 1
- Views: 422
Reaction Mechanism in More Detail
When dealing with an electrophilic addition reaction, is the goal to breakup double bonds? In the course reader, the example of HBr and 2-Butene, says to break up the double bond. Is that always going to be the case for other reactions? Is it best to try and get rid of the double bond?
- Sat Feb 18, 2017 9:33 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Rate of Reaction vs. Reaction Rate Constant [ENDORSED]
- Replies: 2
- Views: 588
Rate of Reaction vs. Reaction Rate Constant [ENDORSED]
Can someone please explain the difference between rate of reaction and reaction rate constant?
- Fri Feb 10, 2017 7:59 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagram
- Replies: 1
- Views: 388
Cell Diagram
When drawing or writing the cell diagram, when do you know to reverse the half reaction? Is it reversed for the anode or the cathode?
- Sat Feb 04, 2017 9:49 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3919766
Re: Post All Chemistry Jokes Here
Did you know that oxygen went for a second date with potassium?
How did it go?
It went OK2!
How did it go?
It went OK2!
- Wed Jan 25, 2017 10:20 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Example of isolated System
- Replies: 4
- Views: 9077
Example of isolated System
What are some good examples of an isolated system? I understand that energy nor matter can be transferred, but I can't really think of any good examples of an isolated system since most are either closed or open.
- Sun Jan 15, 2017 10:54 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: By or On the System? [ENDORSED]
- Replies: 4
- Views: 1034
By or On the System? [ENDORSED]
Hello, my question is how would I be able to identify whether the work was done by a system or on the system? Would I have to identify what type of reaction is occurring in order to determine what did the work?
- Wed Nov 30, 2016 8:37 pm
- Forum: *Titrations & Titration Calculations
- Topic: Strong Acid-Strong Base Titration Calculations
- Replies: 1
- Views: 488
Strong Acid-Strong Base Titration Calculations
Okay so I am a little confused on how to calculate a pH value. In my PLF session I was told that if you have a strong acid and strong base calculation problem we can use the given concentration in the problem to solve for the initial pH. However, in lecture we had to do extra math in order to find a...
- Mon Nov 21, 2016 8:34 pm
- Forum: Bronsted Acids & Bases
- Topic: KA VS KB
- Replies: 2
- Views: 671
Re: KA VS KB
I am not completely positive, but I believe that we use Ka for acids and Kb for bases. So far we have only used Ka for weak acids and Kb for the bases.
- Wed Nov 16, 2016 9:25 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Ligands and Coordination Numbers
- Replies: 2
- Views: 748
Ligands and Coordination Numbers
How do I know many bonds each ligand can make? Or how can I determine which ligands can make more than one bond? I don't exactly remember what was said in lecture about the ligands that had an asterisk next to them in the course reader.
- Tue Nov 08, 2016 2:51 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Z>8, Z<8
- Replies: 8
- Views: 1536
Re: Z>8, Z<8
As long as one atom in the compound is less than 8, then you will have to use the z<8 diagram. It doesn't matter if one atom is greater than 8, you still have to use the z<8 diagram because of the atom that is less than 8.
- Sun Oct 30, 2016 9:25 pm
- Forum: Empirical & Molecular Formulas
- Topic: Mass % Composition
- Replies: 3
- Views: 2814
Re: Mass % Composition
It is unnecessary to calculate the % mass composition when you are given the grams because you can just go from grams to moles. It is a lot quicker to use the grams to convert to moles rather than finding % calculate composition. (You also save time in your calculations.)
- Sun Oct 23, 2016 6:02 pm
- Forum: Lewis Structures
- Topic: Quiz 2
- Replies: 1
- Views: 454
Quiz 2
I know that we discussed during lecture that there are many ways to draw a lewis structure for chemical bonds, but on the quiz will there be only one specific way to correctly draw a lewis structure?
- Sun Oct 16, 2016 8:45 pm
- Forum: Lewis Structures
- Topic: Ionization Energy
- Replies: 1
- Views: 505
Ionization Energy
I am having difficulty understanding how to determine the ionization energy level of an atom. Is there any way to figure out which atom has a lower ionization level for a lewis structure?
- Thu Oct 06, 2016 5:58 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Indeterminacy Equation
- Replies: 1
- Views: 462
Indeterminacy Equation
How can I tell when a number is unrealistic when using the indeterminacy equation? I understand that when we are working with a problem that deals with Heisenberg's Indeterminacy equation, it is unrealistic to get a velocity greater than the speed of light (3.0 x 10^8 m.s) and also for an electron t...
- Wed Sep 28, 2016 11:01 am
- Forum: Administrative Questions and Class Announcements
- Topic: Peer Facilitated Learning Sessions
- Replies: 32
- Views: 13440
Re: Peer Facilitated Learning Sessions
Are the Peer Facilitate Learning Sessions for Chem 14A different from the ones in AAP?