Search found 20 matches

by shannon_tseng_3L
Mon Mar 13, 2017 3:11 pm
Forum: *Cyclopropanes and Cyclobutanes
Topic: Difference between bond angle strain and steric strain
Replies: 2
Views: 889

Difference between bond angle strain and steric strain

What's the difference between bond angle strain and steric strain?
by shannon_tseng_3L
Mon Mar 06, 2017 11:04 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Pseudo-equilibrium constant
Replies: 1
Views: 403

Pseudo-equilibrium constant

What's the significance of the pseudo-equilibrium constant? How would we apply it to a problem?
by shannon_tseng_3L
Mon Feb 27, 2017 7:31 pm
Forum: Administrative Questions and Class Announcements
Topic: Intro to OChem Textbook?
Replies: 2
Views: 344

Intro to OChem Textbook?

When should we start bringing the organic chemistry textbook to class (the green one)?
by shannon_tseng_3L
Mon Feb 20, 2017 10:54 pm
Forum: General Rate Laws
Topic: Units of K
Replies: 4
Views: 9383

Units of K

Is there an easy way to find the units of different K values for different reaction orders?
by shannon_tseng_3L
Tue Feb 14, 2017 12:20 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 11
Views: 1070

Re: Cell Diagram

the format should be
anode metal | anode ion || cathode ion | cathode metal (or Pt)
by shannon_tseng_3L
Mon Feb 06, 2017 1:54 pm
Forum: Administrative Questions and Class Announcements
Topic: Fall 2016 Chem 14A Final Exam
Replies: 1
Views: 370

Fall 2016 Chem 14A Final Exam

I remember Professor Lavelle saying that the finals from last quarter would be ready for pickup during week 4, but I don't remember where/when exactly. How can I get my final back?
by shannon_tseng_3L
Wed Feb 01, 2017 4:02 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Units of H, S, G, U, q, and w
Replies: 1
Views: 317

Units of H, S, G, U, q, and w

What units should we use for enthalpy, entropy, free energy, heat, and work?
by shannon_tseng_3L
Mon Jan 23, 2017 11:52 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy? State Function?
Replies: 2
Views: 384

Re: Entropy? State Function?

Entropy is a state function, but I'm not quite sure about the rest.
by shannon_tseng_3L
Thu Jan 19, 2017 12:17 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeters [ENDORSED]
Replies: 3
Views: 492

Calorimeters [ENDORSED]

What's the difference between a regular calorimeter and a bomb calorimeter? Which one do we use in thermochemistry?
by shannon_tseng_3L
Mon Jan 09, 2017 9:57 pm
Forum: Administrative Questions and Class Announcements
Topic: No more quiz workbook?
Replies: 4
Views: 624

Re: No more quiz workbook?

I heard that we don't get the quiz drop anymore so maybe that's why there's no workbook anymore? I'm not sure though. The syllabus doesn't say anything about the workbook anymore so I'm assuming we don't use it anymore.
by shannon_tseng_3L
Tue Nov 29, 2016 2:41 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Icebox
Replies: 4
Views: 779

Re: Icebox

I don't think you ever use initial moles instead of initial concentration. However, you can use the moles to find the initial concentration since concentration=moles/volume (C= n/V)
by shannon_tseng_3L
Tue Nov 22, 2016 1:37 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Higher/lower energy in a MO diagram?
Replies: 4
Views: 779

Higher/lower energy in a MO diagram?

Which atom in a molecule is drawn lower than the other in a MO diagram? How much lower do you draw it?
by shannon_tseng_3L
Tue Nov 15, 2016 12:34 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: How do you know the charge of an element? [ENDORSED]
Replies: 1
Views: 377

How do you know the charge of an element? [ENDORSED]

In [Co(NH3)5Cl]Cl.H20 (pentaamminechlorocobalt(II) chloride dihydrate?)
How do you know that the Cl has a charge of -1? Is it just something you have to remember?
by shannon_tseng_3L
Tue Nov 08, 2016 12:56 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Z>8, Z<8
Replies: 8
Views: 884

Re: Z>8, Z<8

what would happen if one atom in a molecule has atomic number greater than 8 and the other has Z less than 8?
by shannon_tseng_3L
Fri Nov 04, 2016 3:45 pm
Forum: Lewis Structures
Topic: Octet rule
Replies: 7
Views: 803

Re: Octet rule

even though the element in the question can have more than the octet, the question asks specifically for the octet
by shannon_tseng_3L
Mon Oct 24, 2016 5:13 pm
Forum: Electronegativity
Topic: Trends in periodic table
Replies: 6
Views: 875

Re: Trends in periodic table

I'm pretty sure it doesn't apply since (as you mentioned) noble gases are stable and nonreactive due to their filled outer shells
by shannon_tseng_3L
Mon Oct 17, 2016 5:29 pm
Forum: Ionic & Covalent Bonds
Topic: Ch 3 #9,11 [ENDORSED]
Replies: 5
Views: 649

Re: Ch 3 #9,11 [ENDORSED]

for these kinds of problems, it's helpful to count the total e-'s this metal M has. for 9a: the element in question is [Ar]3d^7 you know that argon has 18 e- (from periodic table: # e- = atomic #) and then you add 7 more from the 3d^7 18+7= 25 but you can't stop there since the metal M has a +2 char...
by shannon_tseng_3L
Wed Oct 12, 2016 9:13 pm
Forum: Trends in The Periodic Table
Topic: Nitrogen and electron affinity
Replies: 1
Views: 534

Nitrogen and electron affinity

I understand why the noble gases find it unfavorable to add more electrons, but why is it that nitrogen also tends not to accept more electrons when it's not a noble gas?
by shannon_tseng_3L
Mon Oct 03, 2016 12:00 pm
Forum: Student Social/Study Group
Topic: Rieber Vista Study Group!
Replies: 8
Views: 1094

Re: Rieber Vista Study Group!

I'd like to join too if you're still looking for people!
by shannon_tseng_3L
Mon Sep 26, 2016 11:45 pm
Forum: Limiting Reactant Calculations
Topic: Multiple Limiting Reactants? [ENDORSED]
Replies: 4
Views: 2568

Multiple Limiting Reactants? [ENDORSED]

Is it possible for there to be more than one limiting reactant in a reaction?
If so, what are the conditions under which this kind of reaction would occur?

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