CHEMISTRY COMMUNITY

Krishil_Gandhi_1D

Yes, but can someone please clarify whether "2 fully eclipsed C-H bonds" mean 1 pair of eclipsed bonds or 2 pairs.

Thanks

Krishil_Gandhi_1D

Hey guys, I just had a question regarding the eclipsed bonds of cyclopentanes. Can someone please explain what the course reader means when it states "the 2 fully eclipsed C-H bonds". Does this mean that there are 2 pairs of eclipsed C-H bonds in the cyclopentane ball and stick model or is...

Krishil_Gandhi_1D

Hey guys, How are we supposed to draw the reaction profile from the reaction mechanism? I understand that you can determine the number of transition states/steps from the reaction mechanism, however, how can we deduce which transition state is higher in energy or whether the delta G is negative or p...

Krishil_Gandhi_1D

WHAT IN TITRATION!!

Krishil_Gandhi_1D

Ochem Joke

Krishil_Gandhi_1D

Got mole problems? Call Avogadro at 6022-1023.

Krishil_Gandhi_1D

Hello,
How are we supposed to know when to use 0.025693 V vs. 0.0592 V in the Nernst equation? I am seeing problems that use either constant and I am unable to find the reasoning behind that. Can someone please advise on this. Thanks in advance.

Krishil_Gandhi_1D

Hey guys, I've attached question 4 from the Chem 14B 2007 midterm. If you open it up, I've circled the number, 2.42, in orange. 2.42 is supposed to be the specific heat of ethanol in regards to this problem. However, I would like to know if we are expected to know this specific heat or if we'll be g...

Krishil_Gandhi_1D

Problem: Caculate the standard entropy of vaporization of water at 85 degrees celsius, given that its standard entropy of vaporization at 100 degrees celsius is 109 J/K mol and the molar heat capacities at constant pressure of liquid water and water vapor are 75.3 J/K mol and 33.6 J/K mol, respectiv...

Krishil_Gandhi_1D

I just wanted to ask if it was advisable to read all of chapter 11 again or should we only read what we're asked to read in the syllabus? Would reading the rest of chapter 11 still help us out in 14B even though we've covered it in 14A? Will there be concepts from last quarter pertaining to chapter ...

Krishil_Gandhi_1D

"Organic chemistry is difficult. Those who study it have alkynes of trouble."

Krishil_Gandhi_1D

Thank you so much.
Krishil

Krishil_Gandhi_1D

Hello,
I'm sorry if this question sounds dumb but I am a little confused on how we could solve the Henderson-Hasselbalch equation for the concentration of a conjugate acid given the pH, pka, and the concentration of the base? Thanks

Krishil

Krishil_Gandhi_1D

Hello, I was wondering if there could be more than one correct responses to question 1B for the 2012 Practice Final in the course reader. Can you also prove E=pc=hv by rearranging the equations to h=p(wavelength) and v=c/(wavelength). You would substitute these into hv and this would give you the sa...

Krishil_Gandhi_1D

Thank you so much:)

Krishil_Gandhi_1D

For # 2 on the quiz 3 prep 3 in the workbook, why is Br written before the NH3 in the solutions?? Alphabetically, wouldn't ammine come before bromo because well 'a' comes before 'b'??
Thanks.

Krishil_Gandhi_1D

You would refer to it as aqua because that is the proper ligand name of H2O as mentioned on Page 117 of our coursereader.

Krishil_Gandhi_1D

Q: What do you get when you cut an avocado into 6.0 X 10^23 pieces??

A: 'Guac'-a-mole...

Krishil_Gandhi_1D

I still don't understand this question. Even after writing in the hydrogen atoms, I do not understand hoe the carbon atoms have a sp^3 hybridization. From my point of view, I can only see 3 regions of electron density around the carbon atoms in the ring structure. Thus, I keep getting sp^2. Is there...

Krishil_Gandhi_1D

Yes, that would be correct.

Krishil_Gandhi_1D

Thank you!!

Krishil

Krishil_Gandhi_1D

Hey guys, Would someone please explain to me why every e- configuration after the Cerium in the lanthanides F-block does not acknowledge the 5d orbital. For example, why is Praseodymium 4f^3,6s^2? I don't understand why it is not 4f^2, 5d^1, 6s^2. Is there some type of guideline or exception to this...

Krishil_Gandhi_1D

So then for the above problem, quiz 1 prep # 5, when solving for the indeterminacy in position, would delta V equal .2 because it would 0.1 doubled?

Krishil_Gandhi_1D

Hey guys,
Can someone please confirm if the answers given to us for the prep quizzes in the chem workbook are in the correct amount of sig figs. I am pretty sure they are but I just would like someone to confirm that. Thanks

Krishil

Krishil_Gandhi_1D

Thank you so much. I see what I was doing wrong. I had the right equation and everything but I was just off on the conversion from nano meters to meters. Thanks

Krishil

Krishil_Gandhi_1D

Hey guys, Can someone please help me out with the below listed problem. It's straight out of the Chem workbook, from the Quiz 1 preparation questions. The problem that I'm facing is that my answer comes out to 4.83 x 10^-4, however, the answer listed in the workbook is 4.83 x 10^-14. Thus, can someo...

Krishil_Gandhi_1D

I'd make a chemistry joke but the problem with that is that all the good ones Argon:)

CHEMISTRY COMMUNITY

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Re: Question on the eclipsed bonds of Cyclopentanes

Question on the eclipsed bonds of Cyclopentanes

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Chem Workbook, Quiz 1 Preparation, Problem #7 [ENDORSED]

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