Search found 18 matches

by ERIKTORRESDisc3C
Wed Mar 15, 2017 2:30 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Course Reader Final Practice "2016 Final" Q4 part B
Replies: 5
Views: 754

Course Reader Final Practice "2016 Final" Q4 part B

4a.jpg 4a2.jpg So I was able to do part A for this problem but when it came to part B I did not know exactly what to do to find the rate limiting step and I am dear need of help on this. I don't know if I am overthinking this or not but I need clarification on what steps to take. Q4 B: "Which ...
by ERIKTORRESDisc3C
Sun Mar 12, 2017 10:17 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018544

Re: Post All Chemistry Jokes Here

batorgo.jpg
by ERIKTORRESDisc3C
Sun Feb 26, 2017 10:34 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018544

Re: Post All Chemistry Jokes Here

Image
by ERIKTORRESDisc3C
Sun Feb 19, 2017 1:09 pm
Forum: General Rate Laws
Topic: 15.9 [ENDORSED]
Replies: 4
Views: 478

Re: 15.9 [ENDORSED]

So does this mean that overall rate of a reaction is given in mol.L -1 .s -1 and the rate constant K will depend on the given concentration to cancel out units and obtain the rate given in a problem? Or is it more so just dependent on the order of the reaction and the rate law used? I am still confu...
by ERIKTORRESDisc3C
Sun Feb 12, 2017 3:44 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram Conventions [ENDORSED]
Replies: 3
Views: 828

Re: Cell Diagram Conventions [ENDORSED]

I have seen that when it comes to cell diagrams the elements in the same states (aq,l, g, etc) are not separated by a single line but by a comma. but what happens when you get multiple states on the anode side or cathode side? If there are three states such as solid, liquid, and gas, is there a spec...
by ERIKTORRESDisc3C
Sun Feb 05, 2017 1:22 pm
Forum: Balancing Redox Reactions
Topic: Cathodes and Anodes [ENDORSED]
Replies: 1
Views: 317

Cathodes and Anodes [ENDORSED]

I have been doing problems for electrochemistry and I am having difficulty knowing which of the redox reactions to name as the cathode or anode. Could someone please provide me with the reasoning behind how to identify which element as cathode or anode??
by ERIKTORRESDisc3C
Sun Jan 29, 2017 11:21 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018544

Re: Post All Chemistry Jokes Here

So, this scientist walks into a sports bar and orders his food and beer when another waiter approaches his a while later. The waiter greets him, "Welcome to the Entropy Bar - may I take your order?" "I put in disorder a long time ago. The service here is getting worse all the time,&qu...
by ERIKTORRESDisc3C
Sat Jan 14, 2017 5:50 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: question 8.57
Replies: 2
Views: 259

question 8.57

I had trouble starting this problem: "Determine the reaction enthalpy for the hydrogenation of ethyne to ethane,from the following data: C_{2}H_{2 }(g)+ 2H_{2}(g)\rightarrow[tex]\Delta H_{c}^{\circ}( C_{2}H_{2 }(g))=-1300 kJ.mol^{-1}, \Delta H_{c}^{\circ}( C_...
by ERIKTORRESDisc3C
Sun Nov 06, 2016 1:19 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Transition Metal Cations and H2O
Replies: 1
Views: 364

Transition Metal Cations and H2O

Why is it that despite the fact that Transition Metal Cations in solutions form complexes with H2O but when you add thing such as NH3 or KCN or NaCl that they replace the H2O Ligands? Shouldn't the fact that H2O has two pairs of electrons that H2O would be more electron rich than NH3, HCN, or NaCl a...
by ERIKTORRESDisc3C
Sun Oct 30, 2016 3:25 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shape and Polarity
Replies: 2
Views: 382

Molecular Shape and Polarity

How can you determine polarity based off of the shape of a compound? I could not understand exactly why Phosphorus trichloride was polar and not nonpolar when I encountered it on one of the practice midterms.
by ERIKTORRESDisc3C
Sat Oct 22, 2016 10:25 pm
Forum: Hybridization
Topic: Electronegativity, Electron Affinity and Ionization Energy
Replies: 2
Views: 10143

Electronegativity, Electron Affinity and Ionization Energy

How do Ionization Energy and Electron Affinity affect Electronegativity? I also don't understand electronegativity trend over the Periodic Table. Does it follow the same trend that ionization energy follows on the periodic table?
by ERIKTORRESDisc3C
Fri Oct 14, 2016 9:02 pm
Forum: *Shrodinger Equation
Topic: Kinetic energy in the Schrodinger equation
Replies: 1
Views: 618

Kinetic energy in the Schrodinger equation

I was reading the section on Schrodinger's equation for wavelength function calculation and found some confusing concepts about it. Why is it that in the Schrodinger equation Kinetic energy is negative in value for calculating wavelength function? Why is the wavelength function's simple form decepti...
by ERIKTORRESDisc3C
Thu Oct 06, 2016 6:11 pm
Forum: Phase Changes & Related Calculations
Topic: Chemistry Humor
Replies: 26
Views: 2585

Nodal Planes

It will be easier to find an electron in a Nodal Plane than to find a girl who likes me...
by ERIKTORRESDisc3C
Thu Sep 29, 2016 4:37 pm
Forum: Limiting Reactant Calculations
Topic: Determining Limiting Reactants and Products produced. [ENDORSED]
Replies: 2
Views: 576

Determining Limiting Reactants and Products produced. [ENDORSED]

I had little experience with Limiting Reactant Calculations in High School since a lot of this material was not covered in my High School classes. I do not know how to set up and solve for products from limiting reactants and would like a simplified explanation of the steps to go about the mathemati...

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