Search found 20 matches

by Jamie Huang 1L
Sat Mar 18, 2017 12:49 pm
Forum: *Alkenes
Topic: naming alkenes
Replies: 4
Views: 522

naming alkenes

On page 29 of the Organic Chemistry Textbook, I noticed that when naming organic molecules like methylcyclohexadiene, it can be spelled out with an "a" or without an "a". Which one is right? or When are we supposed to used the A within the name? Meaning: methylcyclohexdiene or me...
by Jamie Huang 1L
Wed Mar 08, 2017 12:53 am
Forum: *Alkanes
Topic: Common name & IUPAC naming
Replies: 3
Views: 400

Common name & IUPAC naming

I know that we won't be ask for the common names on tests, but I noticed that some (i think IUPAC) names have/utilizes common naming rules, so how do I know if it's IUPAC names or just common names. Also, when do I apply the common naming rules to IUPAC names or how do I know when to ONLY use IUPAC ...
by Jamie Huang 1L
Thu Mar 02, 2017 10:46 pm
Forum: *Alkanes
Topic: Confusion on naming on page 93 on Course Reader
Replies: 2
Views: 272

Confusion on naming on page 93 on Course Reader

I know Dr.Lavelle tried to explain the organic molecule on page 93 in class, but I'm still confused about the part where he named it 4-Ethyl-2,2-dimethyl-hexane instead of 3-Ethyl-5,5-dimethyl-hexane ? I thought we were supposed to choose the number Carbon that gives the smallest number for the firs...
by Jamie Huang 1L
Thu Feb 23, 2017 12:41 am
Forum: First Order Reactions
Topic: Deriving the 1st order reaction equation
Replies: 2
Views: 310

Deriving the 1st order reaction equation

When integrating (-1/a)d[A]/dt = k[A], why do we assume a is equal to 1?
by Jamie Huang 1L
Tue Feb 14, 2017 4:33 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 11
Views: 700

Re: Cell Diagram

Does the order matter when you separate molecules of the same state with commas. Do we usually range them in the order of charges? and when we separate gas from aqueous with a solid verticle line, is there a order in which we have to put them in?
by Jamie Huang 1L
Fri Feb 10, 2017 9:53 pm
Forum: Balancing Redox Reactions
Topic: highest possible charge [ENDORSED]
Replies: 3
Views: 317

highest possible charge [ENDORSED]

I'm a bit confused on when to flip the equations and on which one to flip. I think my TA said that we're suppose to flip the equation to get the highest positive charge when there's two reduction, I just want to confirm this. And also what happens when you have two oxidation equations, which one do ...
by Jamie Huang 1L
Fri Feb 10, 2017 9:48 pm
Forum: Balancing Redox Reactions
Topic: Redox Memorization Tips
Replies: 4
Views: 453

Re: Redox Memorization Tips

Another memorizing tip would be REDCAT, it's recommended by one of the TA's in the midterm review sessions, which stands for
REDuction
occurs
at
CAThodes
and vice versa.
HOPE THIS HELPS!
by Jamie Huang 1L
Tue Feb 07, 2017 9:10 pm
Forum: General Rate Laws
Topic: d[R]/dt
Replies: 1
Views: 181

d[R]/dt

How does defining the rate at d[A]/dt help us in determining the reaction rate of a reaction? I know it represents the rate of change at a time t, but do we have to integrate it in some way or transform it into another equation?
by Jamie Huang 1L
Thu Feb 02, 2017 6:05 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Internal energy = total kinetic enegy
Replies: 1
Views: 230

Internal energy = total kinetic enegy

Since change in internal energy is equal to total kinetic energy, and the total E_k is equal to 3/2nRT, i was just wondering in what scenario/problems would we apply this equation, or is this equation simply here for our understanding of the concept.
by Jamie Huang 1L
Wed Jan 25, 2017 11:01 pm
Forum: Administrative Questions and Class Announcements
Topic: Returning Finals
Replies: 2
Views: 400

Returning Finals

I was told that we usually get our finals from Chem 14A back around week 3, so I was just wondering if we will be getting our physical test back anytime soon since I haven't heard anyone talking about it. Do we get it during our lecture, from our old TA, or are we supposed to go to a certain place t...
by Jamie Huang 1L
Wed Jan 11, 2017 10:05 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: State Properties
Replies: 2
Views: 186

State Properties

Why is heat not a state property, but enthalpy is considered a state property as it consists of heat?
by Jamie Huang 1L
Sat Dec 03, 2016 11:28 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: For the final exam
Replies: 1
Views: 370

For the final exam

For the final exam, do we need to know how to calculate the electrostatic potential energy?
by Jamie Huang 1L
Sat Dec 03, 2016 11:19 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: molecular orbital electron configuration [ENDORSED]
Replies: 1
Views: 238

molecular orbital electron configuration [ENDORSED]

For example, if you were asked to find the the MO electron configuration, how do you know where do you start from, like from the 1s orbital or the valence orbital?
by Jamie Huang 1L
Sat Dec 03, 2016 11:02 pm
Forum: *Shrodinger Equation
Topic: Shrodinger Equation
Replies: 4
Views: 490

Re: Shrodinger Equation

On page 256, in question 2E, I don't quite understand the question and how it links to the answer, which is "orbitals." Can someone explain this to me?
by Jamie Huang 1L
Sun Nov 20, 2016 5:51 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: MO adding/deleting e-
Replies: 3
Views: 422

MO adding/deleting e-

When you have a heteronuclear molecule like BF-, where do you add the extra electron ? Is there a specific side where I add/delete electrons? Are we expected to know which side to add/delete them on ?
by Jamie Huang 1L
Mon Nov 14, 2016 12:58 pm
Forum: *Molecular Orbital Theory Applied To Transition Metals
Topic: A Question about Molecular orbitals
Replies: 2
Views: 424

A Question about Molecular orbitals

Does the state of a molecule, paramagnetic or diamagnetic, affects the strength of bonding. When explaining the strength or stability of a molecule, do you ever use their state to explain their strength and stability? Or do you simply use the bond order to explain all of the above?
by Jamie Huang 1L
Sun Oct 23, 2016 11:27 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic or Covalent Bond: Electronegativity Difference
Replies: 3
Views: 365

Re: Ionic or Covalent Bond: Electronegativity Difference

Since we usually find out the ionic and covalent character of a molecule using the electronegativity chart on our course reader, are we given that chart during quizes and tests?
by Jamie Huang 1L
Fri Oct 14, 2016 2:15 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: quiz 1 fall 2014 prep #10
Replies: 4
Views: 626

Re: quiz 1 fall 2014 prep #10

For this question, I got 7.56 x 10^-20 J for when freq is equal to 1.14 x 10^14 Hz, then using n=4, I plugged in -hR/n^2 and I got -1.36 x 10 ^-19 J. When I try to subtract the Energy of n=4 from Energy of freq, I got -2.12 x 10^-19 J. Using this Energy, I try to find n by plugging values into the f...
by Jamie Huang 1L
Mon Sep 26, 2016 5:54 pm
Forum: Student Social/Study Group
Topic: Rieber Hall 14A Study Group (Fall 2016)
Replies: 49
Views: 4105

Re: Rieber Hall 14A Study Group (Fall 2016)

I would say 2/3 times a week. At least once in the weekend, if people can't make it to the time(s) during the week. As for me, I'm fine with anytime after 6PM during the week.
by Jamie Huang 1L
Mon Sep 26, 2016 5:25 pm
Forum: Student Social/Study Group
Topic: Rieber Hall 14A Study Group (Fall 2016)
Replies: 49
Views: 4105

Re: Rieber Hall 14A Study Group (Fall 2016)

I live in hedrick hall, and i'm interested too! Let me know when and where to meet ! Thanks !

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