CHEMISTRY COMMUNITY

Christian_Makar_2D

There aren't any physical differences except for the fact that axial bonds are drawn with a 90 degree angle to the parent chain while equatorials have a smaller slight angle. The main purpose on differentiating between the two is two be able to predict how the axial and equatorial hydrogens on the a...

Christian_Makar_2D

danny_nguyen_3C wrote:Are we required to know reaction mechanisms for the quiz?

If by section mechanisms you mean where we split up for example an electrophilic addition reaction into two steps and draw arrows representing where the electrons are going, then yes you must know them.

Christian_Makar_2D

If numbering order doesn't matter, then how is 1-ETHYL-3-Methyl-4-PROPYLCYCLOHEXANE wrong as opposed to 4-ETHYL-2-METHYL-1-PROPYLCYCLOHEXANE? Do you have to add all the numbers up and see which one gives the lowest?

Christian_Makar_2D

I just wanted to clarify something from class on Friday. When you have two substituents with the same numbering, you always have to give the first named group the lower number. But if they are not the same, do you give the lower number to the last group? I just got confused because of the example on...

Christian_Makar_2D

There are certain terms like ambient nucleophiles and the nucleophile strength present in the green into to organic chem book that are not in the course reader. Are we responsible for knowing all of them, even if they weren't mentioned in lecture?

Christian_Makar_2D

: Yay for complicated Lewis Structures

Christian_Makar_2D

Sure if I ever get the class smh....

Christian_Makar_2D

So then in the formula deltaG= deltaH-T*deltaS, how can G and H be zero but entropy is still positive?

Christian_Makar_2D

Is the standard entropy of formation just like enthalpy and Gibb's free energy where the value is zero when the molecule is in it's most stable form?

Christian_Makar_2D

What is potential difference in the conceptual sense? Is it the same as voltage?

Christian_Makar_2D

I believe you only use the degeneracy equation when calculating the positional or residual entropy. So basically when you are dealing with calculating entropy in the molecular form, not with thermal entropy.

Christian_Makar_2D

All ideal gases are monoatomic gases

Christian_Makar_2D

I understand that entropy can be positional, but can someone explain what residual entropy is?

Christian_Makar_2D

I know that there are preparation for the three quizzes along with the midterms and finals in the back of the course reader. In Chem 14 A these quizzes had the solutions in the back, but now there are not any solutions so none of us can check our answers . Are there solutions to these practice quizz...

Christian_Makar_2D

Must we memorize the stable form of every element in order to conclude that their Standard Enthalpies of Formation is zero?

Christian_Makar_2D

Delocalization implies that the electron in an anion is pulled away by a more electronegative element as to minimize an electronegative charge.

Christian_Makar_2D

The question says that all of these have the [Kr]4d^10 configuration EXCEPT one of the following, which by what you discovered, would be Pd. So, Pd is the answer because it is the only one that does NOT have that configuration. Actually the only one that did not have a configuration of [Kr]4d^10 wa...

Christian_Makar_2D

this question asks what elements can have the electron configuration [Kr]4d^10. One of the answers was Pd which when I did the configuration, I got [Kr]4d^8 5s^2. Does this mean that the exception that occurs with chromium and copper also applies to elements in that need two more electrons to fill u...

Christian_Makar_2D

When using the ICE box to calculate the concentrations of a weak acid or base, I know that we can use an approximation in the calculation of the acidity or basicity constant if the constant is small. But what is the exact of when to to use this approximation?

Christian_Makar_2D

I remember it being mentioned in class, but how exactly does the MO diagram demonstrate how the chlorophyll absorbs certain lights and reflects green light?

Christian_Makar_2D

Caitlin Dillon 4G wrote:So since en is bidentate? Is dien tridentate because it has 3 nitrogens?

dien is a tridente because when you draw the lewis structure, the nitrogens have a lone pair and can therefore donate both of those electrons to from a coordinating bond.

Christian_Makar_2D

When given the name and then asked to write the formula, I know the transition metal within the brackets go first, but what is the order if you have multiple ligands? Is that alphabetical too?

Christian_Makar_2D

I know a lot of my peers have been marked down on this question as well, which asks "What was the major conceptual change of the photoelectric experiment?". I have already checked the answer solution which said "Light described as packets or photons/quanta of energy." I woke that...

Christian_Makar_2D

The oxidation state is basically the charge on the entire ion. So if the charge is a positive two, put "(II) right after the element name.

Christian_Makar_2D

At this point in the quarter are we expected to only know which hybridization to use based off knowing the corresponding number of electron regions or are there other ways to determine the hybridization of an atom?

Christian_Makar_2D

That extra pair of electrons on Xenon is there because when you count the electrons you end up with only 32, but you need 34 total. So since Xenon is an exception to the octet rule, it can hold more electrons and that one lone pair is added to it.

Christian_Makar_2D

You have the correct Lewis Dot Structure for ONF, the solution manual must either have a different shape showing a resonance, or it is the editor's version of writing it.

Christian_Makar_2D

What is the smallest detectable wavelength? I know for an electron the wavelength is 10^-12, are there any other wavelengths like 10^-15 that can be detected?

Christian_Makar_2D

What is the name of Agent 007's Eskimo cousin?
The name is Bond...Polar Bond

Christian_Makar_2D

Are there any other objects or substances that have the same dual property of wave and particle qualities the same way light does?

Christian_Makar_2D

Hey, I'm on Dykstra floor 9 and I would love to meet up to study as well. Let's just set up a time and place!

CHEMISTRY COMMUNITY

Search found 31 matches

Re: Axial Bonds and Equatorial Bonds

Re: Quiz 3 Winter 2017

Re: Numbering of Substituents [ENDORSED]

Numbering of Substituents [ENDORSED]

Term to know?

Re: Post All Chemistry Jokes Here

Re: 14C discussion Switch

Re: Stable molecules

Stable molecules

Potential Difference

Re: Calculating Degeneracy

Re: 9.7

Residual Entropy

Practice Quizzes in the Course Reader

Stable forms for Standard Enthalpies of Formation

Re: delocalization

Re: 2013 Final Question 2C

2013 Final Question 2C

When to use the approximation [ENDORSED]

Chlorophyll conceptual basis [ENDORSED]

Re: Coordination Number for (en) [ENDORSED]

Order of ligands in the reverse naming

Question 3B on the Fall 2016 Midterm [ENDORSED]

Re: Oxidation State

Hybridization for the midterm

Re: workbook Quiz 2 preparation #7

Re: Lewis Structures #3.33 (c)

Conceptual Wavelength measurement

Re: Chemistry Joke

Re: Nature of light [ENDORSED]

Re: Dykstra Hall Study Group (Fall 2016)