Search found 24 matches

by Cobie_Allen_1H
Sat Mar 18, 2017 1:59 pm
Forum: *Alkenes
Topic: When to use cis and trans?
Replies: 2
Views: 579

Re: When to use cis and trans?

Thank you so much! I appreciate the help!
by Cobie_Allen_1H
Thu Mar 16, 2017 11:07 pm
Forum: *Alkenes
Topic: When to use cis and trans?
Replies: 2
Views: 579

When to use cis and trans?

Sorry if this is a really dumb question, but I am confused when we use cis and trans when naming. Could someone explain it for me?
by Cobie_Allen_1H
Mon Mar 13, 2017 11:18 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7578
Views: 1012378

Re: Post All Chemistry Jokes Here

Because who does not like line structures
by Cobie_Allen_1H
Sun Mar 05, 2017 10:42 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7578
Views: 1012378

Re: Post All Chemistry Jokes Here

Good ole' organic chemistry!
by Cobie_Allen_1H
Sat Feb 25, 2017 10:02 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Slow Reaction
Replies: 11
Views: 756

Re: Slow Reaction

I believe you use the pre-equilibrium approach only when the fast step is first!
by Cobie_Allen_1H
Sat Feb 25, 2017 9:59 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7578
Views: 1012378

Re: Post All Chemistry Jokes Here

Enjoy!
by Cobie_Allen_1H
Fri Feb 10, 2017 6:47 pm
Forum: Balancing Redox Reactions
Topic: Homework 14.3.
Replies: 2
Views: 368

Re: Homework 14.3.

Wow, thank you so much! That helped a lot!
by Cobie_Allen_1H
Mon Feb 06, 2017 6:57 pm
Forum: Balancing Redox Reactions
Topic: Homework 14.3.
Replies: 2
Views: 368

Homework 14.3.

Hey guys! I was working on the homework and I honestly was just really confused on how to balance redox equations. Could you help out? Question 14.3. states " Balance each of the following skeletal equations by using oxidation and reduction half-reactions. All the reactions take place in acidic...
by Cobie_Allen_1H
Sun Feb 05, 2017 6:37 pm
Forum: Balancing Redox Reactions
Topic: Intensive versus Extensive Properties
Replies: 2
Views: 481

Re: Intensive versus Extensive Properties

Thank you so much! I had a similar question on this, it helped out a lot!
by Cobie_Allen_1H
Sun Jan 29, 2017 10:33 am
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: W versus S
Replies: 2
Views: 280

Re: W versus S

I was confused by this as well, thank you for the explanation. So S is essentially related to W in that in order to measure the total disorder we must know the W, right?
by Cobie_Allen_1H
Sat Jan 21, 2017 8:29 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: HW 8.53
Replies: 3
Views: 378

Re: HW 8.53

So essentially no heat leaves or enters the calorimeter, it is just that the heat is absorbed or given off within the isolated system? Please correct me if I am wrong, I was a little confused by that as well.
by Cobie_Allen_1H
Mon Jan 16, 2017 12:56 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess's Law
Replies: 3
Views: 379

Re: Hess's Law

I still don't really get when we should flip the reaction? Could you explain that for me?

Thanks!
by Cobie_Allen_1H
Sun Dec 04, 2016 11:42 am
Forum: Polyprotic Acids & Bases
Topic: Polyprotic Question!
Replies: 8
Views: 732

Re: Polyprotic Question!

Thank you so much for the help!
by Cobie_Allen_1H
Sun Dec 04, 2016 11:14 am
Forum: Polyprotic Acids & Bases
Topic: Polyprotic Question!
Replies: 8
Views: 732

Polyprotic Question!

This is probably a super easy question, but how do we know if an acid or base is polyprotic?

Thank you so much
by Cobie_Allen_1H
Sun Dec 04, 2016 11:11 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Chapter 12 problem 79
Replies: 2
Views: 353

Re: Chapter 12 problem 79

Thank you! Your explanation is very helpful! I was also confused on how to do this problem!
by Cobie_Allen_1H
Mon Nov 28, 2016 10:49 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework Problem 11.41
Replies: 3
Views: 720

Re: Homework Problem 11.41

Thank you so much for the help! Really appreciate it!
by Cobie_Allen_1H
Fri Nov 18, 2016 7:46 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Homework Problem 11.41
Replies: 3
Views: 720

Homework Problem 11.41

Hey guys! I had a question on the homework. I just got a little confused. 11.41. A 25.0-g sample of ammonium carbamate, NH 4 (NH 2 CO 2 ), was placed in an evacuated 0.250-L flask and kept at 25 degrees Celsius. At equilibrium, 17.4mg of CO 2 was present. What is the value of Kc for the decompositio...
by Cobie_Allen_1H
Mon Nov 14, 2016 12:28 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Finding Coordination Number and Oxidation State [ENDORSED]
Replies: 7
Views: 1197

Re: Finding Coordination Number and Oxidation State [ENDORSED]

Julia_Gordon4I wrote:I am slightly confused on how to find the coordination number and oxidation state for complex ions. Could someone please explain how to find both of those values for
[Pt(CN)(NH3)3]+ ?

Thank you!


Yes, this confuses me a lot! Any help would be great!
by Cobie_Allen_1H
Fri Nov 04, 2016 1:00 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Bonding vs Antibonding
Replies: 3
Views: 447

Re: Bonding vs Antibonding

I had the same question. This is very helpful! Thank you so much!
by Cobie_Allen_1H
Fri Oct 28, 2016 4:24 pm
Forum: Student Social/Study Group
Topic: Midterm Study Group (Rieber Vista or anyone else who wants to join)
Replies: 2
Views: 630

Midterm Study Group (Rieber Vista or anyone else who wants to join)

Hey Guys! On Tuesday my friend and I want to get a study group together to cram study for the midterm! We were thinking somewhere in Rieber Vista, like we could do the Vista 6 lounge, and then after the midterm review session from 6-7! Let me know if anyone wants join! Otherwise good luck studying!
by Cobie_Allen_1H
Fri Oct 21, 2016 6:31 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs. Covalent Bonds [ENDORSED]
Replies: 2
Views: 484

Re: Ionic vs. Covalent Bonds [ENDORSED]

I had the same question! Thanks! This is very helpful!
by Cobie_Allen_1H
Thu Oct 13, 2016 11:15 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Homework Problem 1.57.
Replies: 1
Views: 292

Homework Problem 1.57.

Hey Guys! I feel like this question is super easy, but my brain is so full of chemistry. Can someone explain how to do problem 1.57? Here is the question: "Lines in the Balmer Series of the hydrogen spectrum are observed at 656.3, 486.1, 434.0, and 410.2nm. What is the wavelength of the next li...
by Cobie_Allen_1H
Fri Oct 07, 2016 2:58 pm
Forum: Student Social/Study Group
Topic: Rieber Vista Study Group!
Replies: 8
Views: 865

Re: Rieber Vista Study Group!

Can I please join? I need a place to study for chemistry!
by Cobie_Allen_1H
Thu Sep 29, 2016 3:37 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect Post-Assessment #22 & 23
Replies: 1
Views: 249

Photoelectric Effect Post-Assessment #22 & 23

#22 states that "Molybdenum metal must absorb radiation with a minimum frequency of 1.09 x 1015 s-1 before it can emit an electron from its surface. Answer the following two questions." I understand how to answer 22 ("What is the minimum energy needed to produce this effect?"), b...

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