Search found 18 matches

by Abbas_Hakim_1B
Tue Mar 14, 2017 6:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 202
Views: 66132

Re: Saying Thank You to Dr. Lavelle

Dr. Lavelle,

Thank you so much for all the resources, review sessions, extra hours, and the time you put into answering our questions on this forum! It definitely helped me get through 14B.

All the best,
Abbas
by Abbas_Hakim_1B
Mon Mar 06, 2017 7:00 pm
Forum: *Organic Reaction Mechanisms in General
Topic: OChem Reaction Profile
Replies: 1
Views: 225

OChem Reaction Profile

When drawing reaction profiles for organic reactions, will we be told whether the reaction is exergonic or endergonic?
by Abbas_Hakim_1B
Sat Mar 04, 2017 4:17 pm
Forum: *Nucleophilic Substitution
Topic: Reaction mechanisms ochem [ENDORSED]
Replies: 1
Views: 3825

Reaction mechanisms ochem [ENDORSED]

will we only be required to know electrophilic addition and nucleophilic substitution for quiz 3 or are there any other mechanisms that we should know?
by Abbas_Hakim_1B
Sun Feb 26, 2017 2:52 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalysts [ENDORSED]
Replies: 2
Views: 338

Re: Catalysts [ENDORSED]

The difference is that homogenous catalysts are catalysts that are in the same phase as the reactants (solid catalyst-solid reactant) and heterogeneous catalysts are catalysts that are in different phase (solid catalyst-gas reactant). There's information on catalysts on page 76 of the course reader....
by Abbas_Hakim_1B
Sun Feb 19, 2017 5:04 pm
Forum: General Rate Laws
Topic: products in rate law equation
Replies: 4
Views: 451

Re: products in rate law equation

I don't think so. The course reader also states that the products should also be removed continuously to keep the product concentration low so that it doesn't affect rate equation. Hope this helps!
by Abbas_Hakim_1B
Sat Feb 11, 2017 5:07 pm
Forum: Zero Order Reactions
Topic: Catalysts [ENDORSED]
Replies: 1
Views: 260

Catalysts [ENDORSED]

If catalysts affect the speed of the reaction, are there reactions in which the catalyst is included in the rate equation?
by Abbas_Hakim_1B
Sun Feb 05, 2017 2:23 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagrams [ENDORSED]
Replies: 1
Views: 211

Cell Diagrams [ENDORSED]

Will we be required to draw voltaic cells for quizzes and exams?
by Abbas_Hakim_1B
Sun Jan 29, 2017 2:13 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: HWQ 8.67
Replies: 1
Views: 233

HWQ 8.67

Hi, for homework question 8.67, why do we have to atomize C? I was thinking that C(solid) is the most stable form of carbon
by Abbas_Hakim_1B
Sat Jan 21, 2017 12:01 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond Enthalpy vs Enthalpy of formation [ENDORSED]
Replies: 1
Views: 212

Re: Bond Enthalpy vs Enthalpy of formation [ENDORSED]

I think bond enthalpy is the amount of energy required to break one mole of a bond, where as Enthalpy of formation is the change in enthalpy when n moles of a substance in its standard state is formed from its elements in standard state.
by Abbas_Hakim_1B
Sun Jan 15, 2017 7:35 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Total Mass
Replies: 1
Views: 202

Total Mass

When mixing a solid and a liquid in a calorimeter, do we use the sum of the masses when calculating (mass x sp heat cap. x temp. change) ?
by Abbas_Hakim_1B
Sun Nov 27, 2016 8:04 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 890172

Re: Post All Chemistry Jokes Here

Fun little ride
by Abbas_Hakim_1B
Wed Nov 16, 2016 11:11 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: MO Energy Diagrams for non-diamtomics
Replies: 1
Views: 213

Re: MO Energy Diagrams for non-diamtomics

For hetero-nuclear molecules (i.e. HF, CO, NO), you would use the molecular orbital diagram for z<8. So the pi 2p would be below the sigma 2p. Question 6 of the Fall Midterm 2014 in the course reader is an example for NO
by Abbas_Hakim_1B
Wed Nov 16, 2016 9:09 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 890172

Re: Post All Chemistry Jokes Here

Why do scientists like nitrates so much?
They're cheaper than dayrates
by Abbas_Hakim_1B
Sun Oct 30, 2016 2:08 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 890172

Re: Post All Chemistry Jokes Here

hydrogen bonds lol
by Abbas_Hakim_1B
Sun Oct 23, 2016 12:03 pm
Forum: Student Social/Study Group
Topic: Hitch Study Group
Replies: 1
Views: 452

Re: Hitch Study Group

Hey, Monday night sounds good!
by Abbas_Hakim_1B
Sat Oct 15, 2016 1:40 pm
Forum: Lewis Structures
Topic: Sulphate ion
Replies: 1
Views: 210

Sulphate ion

I need some help on the structure of the sulphate ion
by Abbas_Hakim_1B
Sat Oct 08, 2016 12:20 pm
Forum: Student Social/Study Group
Topic: A classic joke
Replies: 3
Views: 746

Re: A classic joke

formaldehyde-casualdehyde.jpg
by Abbas_Hakim_1B
Tue Sep 27, 2016 7:22 pm
Forum: Student Social/Study Group
Topic: Hitch Study Group
Replies: 12
Views: 1170

Re: Hitch Study Group

Hey, I'm interested in a study group. I'm from hitch B!

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