Search found 15 matches

by yoonjong_han_3F
Sun Mar 19, 2017 7:01 pm
Forum: Student Social/Study Group
Topic: final test back
Replies: 2
Views: 520

final test back

I am not going to attend spring.
So, can I get the test back early??
by yoonjong_han_3F
Fri Mar 17, 2017 3:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Details and Review Sessions Winter 2017
Replies: 114
Views: 13616

Re: Final Exam Details and Review Sessions Winter 2017

do we need to know how to draw ether, carboboxylic acid, or amines and cyclic amines??
it is so hard!!!!
by yoonjong_han_3F
Sat Mar 11, 2017 7:38 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Details and Review Sessions Winter 2017
Replies: 114
Views: 13616

Re: Final Exam Details and Review Sessions Winter 2017

What chapter covers the final???

especially for the organic chemistry
by yoonjong_han_3F
Sun Mar 05, 2017 1:02 am
Forum: General Science Questions
Topic: Chem 14C
Replies: 2
Views: 396

Re: Chem 14C

thanks!

i contacted with professor of chem 14c. But, he would not provide pte
by yoonjong_han_3F
Sun Feb 26, 2017 6:35 pm
Forum: General Science Questions
Topic: Chem 14C
Replies: 2
Views: 396

Chem 14C

Is there any way we could attain a seat in chem 14c?
My enrollment time was late. and I didn't get in 14 c.

Help
by yoonjong_han_3F
Sat Feb 11, 2017 9:11 pm
Forum: Balancing Redox Reactions
Topic: order of half-reaction
Replies: 2
Views: 306

Re: order of half-reaction

for instance, like homework 14.17???

Pt(s) l Fe +3, Fe +2 // H+ (aq), Mno4-, Mn+2 (aq) l pt(s)
by yoonjong_han_3F
Sat Feb 11, 2017 9:06 pm
Forum: Balancing Redox Reactions
Topic: order of half-reaction
Replies: 2
Views: 306

order of half-reaction

When writing a balanced equation for the cell reaction.
how should we do it?

I am guessing that it is Pt(s)I Neutral I Oxidized II Higher I reduced I Pt(s)

Also, when do we usually use pt?
by yoonjong_han_3F
Sat Feb 11, 2017 6:36 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: HW Problem 14.11
Replies: 2
Views: 272

Re: HW Problem 14.11

I thought so.

I think u are right.
does anyone have link to solution manual error?
by yoonjong_han_3F
Tue Feb 07, 2017 4:57 pm
Forum: General Science Questions
Topic: quiz 1
Replies: 3
Views: 626

quiz 1

Hi,
I heard Dr. Lavelle used to drop the lowest quiz grade.

Does he still drop it??
Or, did he change the grading scheme??
by yoonjong_han_3F
Sun Feb 05, 2017 4:35 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 13715

Re: Quiz 1 Preparation Answers

When do we get our quiz back??
by yoonjong_han_3F
Sun Feb 05, 2017 4:34 pm
Forum: Balancing Redox Reactions
Topic: Intensive property
Replies: 4
Views: 406

Re: Intensive property

It is not depended on n. That's why it is intensive property.

Isn't it???
by yoonjong_han_3F
Fri Jan 27, 2017 4:54 pm
Forum: Phase Changes & Related Calculations
Topic: Difference between K and Q
Replies: 1
Views: 309

Difference between K and Q

In today's lecture, I was confused about

change in G= standard free energy +RT In Q

And, Gp-Gr =-RT In K

what makes them different?
and, what is difference between k and q? can anyone define it for me??

thanks!
by yoonjong_han_3F
Sun Jan 22, 2017 3:20 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Significant Figure [ENDORSED]
Replies: 7
Views: 668

Significant Figure [ENDORSED]

Do we need to know rule of significant figure for quiz??
by yoonjong_han_3F
Sun Jan 15, 2017 5:59 pm
Forum: Phase Changes & Related Calculations
Topic: phase changes [ENDORSED]
Replies: 3
Views: 459

Re: phase changes [ENDORSED]

So, as Dr. Lavelle mentioned in lecture,

when you touch the object at 100 celsius, there will be transfer of heat to your hand! So, it is exothermic
by yoonjong_han_3F
Sun Jan 15, 2017 5:58 pm
Forum: Phase Changes & Related Calculations
Topic: Constant P vs Constant V Calorimetry [ENDORSED]
Replies: 4
Views: 513

Re: Constant P vs Constant V Calorimetry [ENDORSED]

As different from solid or liquid, the gas can extend and contract in volume.
As you see pv=nrt, if temperature increases, either p or v must increase in order for both equations to be equal.

Is it where constant p or constant v used, is it?

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