CHEMISTRY COMMUNITY

Flamingos 3L

What would be the priority followed after we completed one of them? Say we know where to start our first number due to a functional group, but then there is a conflict between making a double bond smaller numbered vs making 2 substituents shorter numbered. Would priority follow down the chain of fun...

Flamingos 3L

In the organic textbook on page 156, it has an example with a R and S isomer. Will we need to know about the significance of these different structure variants for quiz 3 or the final?

Flamingos 3L

What are the number ordering for substituents within substituents based on? Like if there was a methyl attached to a pentyl at the second to the very end C atom. Would it be 2 methyl pentyl due to the lower numbering, or would it be 4 methyl pentyl due to counting starting from the side that connect...

Flamingos 3L

Up to what chapter in the textbook are advised to study up to for this quiz? I see that the Arrhenius equation shows up during 15.11 so are we advised to just study the chapters before that?

Flamingos 3L

I have a couple questions about the explanation from the solutions manual. First, when the problems state that we must reverse the reaction yields, normally we'd have to flip the sign for the standard potentials too. This is not the case in the solutions manual, as it just proceeds with the original...

Flamingos 3L

I heard this term being thrown around during my discussion and I didn't have a clear idea of what it is. Whats the relationship between this and the standard cell potentials? Thanks!

Flamingos 3L

Are we required to know about this for the quiz?

Flamingos 3L

How I did it was like this. I did all the work to see what was needed for the 2nd equation, which would be the energy needed to make 4 of the NO2 molecules from equation (so the equation's normal energy use times two since we 4 NO2 instead of just 2), plus the energy needed for the reaction for equa...

Flamingos 3L

During the last lecture and during discussion, I heard this concept thrown around a lot but I feel I still don't have a solid grasp on it. I remember during reversible processes, internal and external pressures are the same, but I'm having a hard time understanding exactly what that means in real li...

Flamingos 3L

In my opinion the TA office hours and UA have been a blessing. They're all know what they're doing so asking them to explain most of the problems helps greatly, especially on HW since there are some really confusing ones out there.

Flamingos 3L

Will this mean that we won't be expected to do any problem concerning the total pH of polyprotic acids through it's multiple steps on the final?

Flamingos 3L

I think it would. When Lavell talked about how Cl- doesn't change pH, I think he referred to how the individual atom doesn't change pH, since if we were to draw out the reaction equation, Cl- would be alone on both sides, and crossed out. Despite this, the structure Cl- is attached to, anilinium chl...

Flamingos 3L

Hello! One thing I was confused about was the difference between Kc and Kp. I understand how different units are supposed to be used for both but I don't really get the difference between them conceptually. Can someone explain the difference between them, and if there are any other K I'm missing? Th...

Flamingos 3L

If K is between those two values, unless it is at 0, one of the sides of the reaction is still favored. The only thing is though that the favoring is so minuscule that it isn't noticeable.

Flamingos 3L

For determining formal charge, it is the number of valance electrons minus the amount of lone electrons and the number of electrons in bonds divided by two. Thus the FC = V - ( L + S/2). A easier way of thinking of the problem in terms of the shared electron is to just consider the number of bonds i...

Flamingos 3L

Here ya go! An organic chemist, an analytical chemist, and a physical chemist are asked if a certain horse will win the race. The organic chemist asks what the horse has been eating and drugs given to it. The analytical chemist asks for the makeup of the track and mud. The physical chemist starts wi...

Flamingos 3L

So in the course reader, the jump from Vanadium to Chromium is 3d^3 to 3d^5. Does this mean that three elections were added in this one transition in atomic numbers? (since Chromium is 3d^5 and 4s1) Also, after Chromium, where is the atom placed? continuing the 3d shell, on the 4s shell, or is it ju...

Flamingos 3L

Photons themselves don't have momentum due to no mass. If you want to determine the wavelength of a photon, the E= wavelength * frequency equation is what you need to use.

Flamingos 3L

How can you tell the difference between a chemist and a plumber?

Ask them to pronounce unionized.

CHEMISTRY COMMUNITY

Search found 19 matches

How does priority shift after the first priority has been completed?

Regarding clockwise or counter clockwise isomers

About number ordering for Substituents

Re: Quiz 2 Winter 2017

14.11 Solutions Manual

Can someone explain what one half reduction potential is? [ENDORSED]

Trouton's rule

Re: Homework 8.65

Can some explain reversible and irreversible processes? [ENDORSED]

Re: Most Helpful Resource

Re: Polyprotic pH calculations [ENDORSED]

Re: Acidic Salts

Kc vs Kp and all the other constants

Re: Equilibrium

Re: How to figure out formal charge? [ENDORSED]

Re: Post All Chemistry Jokes Here

Questions on the two exceptions, Chromium and Copper. [ENDORSED]

Re: How do photons have momentum? [ENDORSED]

Re: Chemistry Jokes