Search found 15 matches

by Alejandra_Vasquez_1B
Sun Feb 26, 2017 8:48 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Reaction Mechanism in More Detail
Replies: 1
Views: 260

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?
by Alejandra_Vasquez_1B
Sat Feb 18, 2017 9:33 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Rate of Reaction vs. Reaction Rate Constant [ENDORSED]
Replies: 2
Views: 319

Rate of Reaction vs. Reaction Rate Constant [ENDORSED]

Can someone please explain the difference between rate of reaction and reaction rate constant?
by Alejandra_Vasquez_1B
Fri Feb 10, 2017 7:59 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 1
Views: 221

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?
by Alejandra_Vasquez_1B
Sat Feb 04, 2017 9:49 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1169786

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!
by Alejandra_Vasquez_1B
Wed Jan 25, 2017 10:20 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Example of isolated System
Replies: 4
Views: 4111

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.
by Alejandra_Vasquez_1B
Sun Jan 15, 2017 10:54 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: By or On the System? [ENDORSED]
Replies: 4
Views: 539

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?
by Alejandra_Vasquez_1B
Wed Nov 30, 2016 8:37 pm
Forum: *Titrations & Titration Calculations
Topic: Strong Acid-Strong Base Titration Calculations
Replies: 1
Views: 299

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...
by Alejandra_Vasquez_1B
Mon Nov 21, 2016 8:34 pm
Forum: Bronsted Acids & Bases
Topic: KA VS KB
Replies: 2
Views: 420

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.
by Alejandra_Vasquez_1B
Wed Nov 16, 2016 9:25 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligands and Coordination Numbers
Replies: 2
Views: 499

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.
by Alejandra_Vasquez_1B
Tue Nov 08, 2016 2:51 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Z>8, Z<8
Replies: 8
Views: 731

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.
by Alejandra_Vasquez_1B
Sun Oct 30, 2016 9:25 pm
Forum: Empirical & Molecular Formulas
Topic: Mass % Composition
Replies: 3
Views: 2324

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.)
by Alejandra_Vasquez_1B
Sun Oct 23, 2016 6:02 pm
Forum: Lewis Structures
Topic: Quiz 2
Replies: 1
Views: 271

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?
by Alejandra_Vasquez_1B
Sun Oct 16, 2016 8:45 pm
Forum: Lewis Structures
Topic: Ionization Energy
Replies: 1
Views: 326

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?
by Alejandra_Vasquez_1B
Thu Oct 06, 2016 5:58 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Indeterminacy Equation
Replies: 1
Views: 276

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...
by Alejandra_Vasquez_1B
Wed Sep 28, 2016 11:01 am
Forum: Administrative Questions and Class Announcements
Topic: Peer Facilitated Learning Sessions
Replies: 32
Views: 11553

Re: Peer Facilitated Learning Sessions

Are the Peer Facilitate Learning Sessions for Chem 14A different from the ones in AAP?

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