CHEMISTRY COMMUNITY

Taylor_Yamane_2L

Dr. Lavelle,

Thank you for being such a kind and supportive teacher. You have provided us with so many useful resources to succeed and truly helped me get better in chem. Thanks also for always communicating with us and for having everything ready and graded in such a timely manner!

Taylor_Yamane_2L

Transition states have partially formed bonds which gives them a much higher energy and makes them very unstable while intermediates have fully formed bonds so transition states are normally always more unstable than the intermediates.

Taylor_Yamane_2L

If you have a ring structure that has a ethyl substituent with a fluorine attached at the end do you write it alphabetically so ethylflouro or does the fluorine always go in front so flouroethyl?

Taylor_Yamane_2L

Taylor_Yamane_2L

He has posted them on his website. Heres a link https://lavelle.chem.ucla.edu/wp-content/supporting-files/Chem14B/Midterm_exam_ans_Winter_2017.pdf

Taylor_Yamane_2L

a little late but in the spirit of valentines day

Taylor_Yamane_2L

Can someone explain the difference between standard cell potential (E knot) and cell potential (E)? Also if the problem simply asks for the cell potential are we solving for E?

Taylor_Yamane_2L

Taylor_Yamane_2L

On the periodic table that came with Lavelle's course reader there are a bunch of equations and conversions that we will always be given on a exam or quiz and it includes the conversion from L.atm to J. It shows that 1L.atm=101.325J so with simple stoichiometry you can do the conversion. Hope that h...

Taylor_Yamane_2L

Regarding entropy and equilibrium it seems that entropy correlates to the amount of states you can be in. Thus a low entropy value means some unit of energy is densely packed in a small volume while a high entropy value means a unit of energy is able to occupy a larger region/state which makes it mo...

Taylor_Yamane_2L

Specific heat seems to be the amount of energy needed per unit of mass to raise the temperature of a sample by 1 degree celsius while heat capacity is just the amount of energy needed to raise the temperature of a sample by 1 degree celsius.

Taylor_Yamane_2L

Did you hear about the chemist who was reading a book about Helium? He just couldn't put it down.

Taylor_Yamane_2L

Taylor_Yamane_2L

Thanks for sharing this!

Taylor_Yamane_2L

A photon checks into a hotel and is asked if he needs any help with his luggage. He says, "No, I'm traveling light."

Taylor_Yamane_2L

After talking to some upperclassmen it seems that if you really enjoy chemistry and have a strong foundation of all the concepts then you can take 14B and 14BL in the same quarter. However many people hold off on taking 14BL until they're done with 14B because it helps to understand the material bef...

Taylor_Yamane_2L

Taylor_Yamane_2L

Wow that explanation was so helpful and so was the video, thank you so much!

Taylor_Yamane_2L

I am a little confused on exactly how to figure out how many unpaired electrons each element has. For example can someone please explain why Nickel has 2 unpaired electrons.

Thank you!!

Taylor_Yamane_2L

Q: If H2O is the formula for water, what is the formula for ice?
A: H2O cubed.

Q: Describe the chemical difference between H20 and CO2.
A: H2O is hot water and CO2 is cold water

Taylor_Yamane_2L

oh I see my mistake now, thanks so much for your help!!

Taylor_Yamane_2L

This problem seems fairly simple but I can't seem to get the right answer, wondering if anyone can help me out. Thanks!

"Calculate the volume of 0.642 M KOH (aq) that should be used to make 1.00 L of 0.101 M KOH (aq)."

Taylor_Yamane_2L

A question on the atomic spectra module post assessment asks the following question and I'm am not exactly sure how to figure it out. Any hints would be much appreciated! (: The meter was defined in 1963 as 1,650,763.73 wavelengths of radiation emitted by krypton-86 (it has since been redefined). Wh...

CHEMISTRY COMMUNITY

Search found 23 matches

Re: Saying Thank You to Dr. Lavelle

Re: Transition states and stability

Substituent naming

Re: Post All Chemistry Jokes Here

Re: Midterm solutions

Re: Post All Chemistry Jokes Here

Cell Potential vs Standard Cell Potential

Re: Post All Chemistry Jokes Here

Re: Converting L/atm to Joules

Re: What is Kb in Entropy? Entropy Clarification? [ENDORSED]

Re: Heat Capacity

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Quizlet for the names of Common Ligands

Re: Post All Chemistry Jokes Here

Re: Chem 14B and 14BL [ENDORSED]

Re: Post All Chemistry Jokes Here

Re: Chapter 2 Question 51 [ENDORSED]

Chapter 2 Question 51 [ENDORSED]

Re: Post All Chemistry Jokes Here

Re: Quiz Prep: Fall 2014 #4 [ENDORSED]

Quiz Prep: Fall 2014 #4 [ENDORSED]

Atomic Spectra Post Assessment Question