## Search found 11 matches

Sun Mar 19, 2017 11:56 am
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Practice Problems
Replies: 23
Views: 2436

### Re: Practice Problems

Goodluck on the final everyone!
Mon Mar 13, 2017 12:45 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Exam points
Replies: 7
Views: 875

### Re: Final Exam points

Following up on on the mention about the points for posting on Chemistry Community, does anyone know if posting twice one week could replace the point of another week of not posting? I wasn't able to post last week bc I didn't have Wi-Fi at home and my phone wasn't working. thanks in advance! same ...
Wed Mar 08, 2017 4:38 pm
Forum: *Alkanes
Topic: Line Structures
Replies: 1
Views: 231

### Re: Line Structures

No as long as there's the correct amount of molecules/atoms in the structure!
Fri Mar 03, 2017 9:56 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7749
Views: 1061076

### Re: Chemistry Jokes

Xinjie Su 2J wrote:One property of liquid is that it can fit into containers of any shape and automatically takes up all the space.

So...cat is a liquid!!

This gives me so much joy! Such cute little kitties.
Wed Feb 22, 2017 1:04 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15718

### Re: Quiz 2 Winter 2017

So are we being quiz on knowing Activation energy? If so, does the equation ln[k2/k1]=Ea/R ((1/t2)-(1/T1)) work for all rate laws?
Tue Feb 21, 2017 9:20 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15718

### Re: Quiz 2 Winter 2017

Can someone please help me with #3? I used the integrated rate law for first order and I got t=205 seconds For #3, it is a first order reaction, so you use the corresponding equation ln[A] = -kt + ln[A0] so, ln(.33) = -(.0068)t + ln(.75) ln(.33/.75) = -.0068t t = ln(.33/.75)/-.0068 t = 120 sec Than...
Sat Feb 18, 2017 7:00 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7749
Views: 1061076

### Re: Post All Chemistry Jokes Here

too cute!
Fri Feb 10, 2017 12:54 pm
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: Differences [ENDORSED]
Replies: 1
Views: 320

### Differences[ENDORSED]

Hello! Can someone tell me the difference between
-Potential Difference (E˚cell= E˚cathode-E˚anode) and
- Cell Potential (E˚=E˚cathode-E˚anode)
Sun Jan 29, 2017 10:43 pm
Forum: General Science Questions
Topic: Sig Figs
Replies: 5
Views: 579

### Re: Sig Figs

I also heard that we do NOT consider temperature when applying sig figs. Is this true? For example, say all the given units are in 4 sig figs and temperature is in 3, does our end calculation have three or four sig figs?
Sun Jan 22, 2017 5:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7749
Views: 1061076

### Re: Post All Chemistry Jokes Here

Q: What element is derived from a Norse [censored]?
A: Thorium.
Fri Jan 13, 2017 3:40 pm
Forum: Phase Changes & Related Calculations