CHEMISTRY COMMUNITY

Sydney Takeda 2I

it's been fun

Sydney Takeda 2I

Sydney Takeda 2I

this is physics but I mean

Sydney Takeda 2I

also tyvm lyndon you are our saving grace

Sydney Takeda 2I

for 14g we labeled the difference between the energy of the reactants and that of the products as deltaG, but in Joyce's notes we labeled it deltaH; can someone explain why they both work or why not or whatever that's supposed to be labeled as??

Sydney Takeda 2I

Sydney Takeda 2I

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Sydney Takeda 2I

Sydney Takeda 2I

whoops

Sydney Takeda 2I

(this was accidental im sorry)

Sydney Takeda 2I

we love sodium

Sydney Takeda 2I

Sydney Takeda 2I

Sydney Takeda 2I

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Sydney Takeda 2I

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Lady Ga^2

Sydney Takeda 2I

Fe = Iron and Male = Man
Therefore, Female = Ironman

Sydney Takeda 2I

(you're welcome)

Sydney Takeda 2I

If you're not part of the solution, you're part of the precipitate.

Sydney Takeda 2I

Q: What do you call a clown who's in jail?
A: A silicon

Sydney Takeda 2I

Q: What is the show cesium and iodine love watching together?
A: CSI

Sydney Takeda 2I

(Sorry the tables I'm referring to are labeled this way in the 7th edition!) Yes, for part a), you use the Kb value for NH3 in table 6C.2 to find the Ka value of its conjugate acid NH4+ (KaKb = Kw) For part b), you can use table 6D.1 to find the Ka value of common cations in water, which includes A...

Sydney Takeda 2I

Can someone explain how to work through this problem? I understand the calculations and everything, but would I need to look up the Ka value or??

Sydney Takeda 2I

(this may be a dumb question but) is there any difference in saying something is basic versus saying it's alkaline?

Sydney Takeda 2I

good nitrogen

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sodium sodium sodium sodium sodium sodium sodium sodium BATMAN!

Sydney Takeda 2I

What's a chemist's favorite genre of music?

Sydney Takeda 2I

m_s is the spin magnetic quantum number, with a value of 1/2 or -1/2

Sydney Takeda 2I

Could someone just briefly explain how to determine whether something is covalently or ionically bonded? Thanks!

Sydney Takeda 2I

For #31, would it also be correct to put NO2 in the complex or does it have to be ONO?

Sydney Takeda 2I

When do you need to include "ion" at the end of a coordination compound name?

Sydney Takeda 2I

and happy holidays :)

Sydney Takeda 2I

good luck on finals everyone!

Sydney Takeda 2I

bless your heart for these practice problems and review sessions

Sydney Takeda 2I

14/14

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me, coming back from break

Sydney Takeda 2I

What's a chemist's favorite pet?

Sydney Takeda 2I

What does Mariah Carey want for Christmas?

Sydney Takeda 2I

If Avogadro calls tell him to leave his number

Sydney Takeda 2I

Christopher Tran 1E wrote:Does anyone know where/if there's a VSEPR chart in the 6th edition of the textbook?

I believe it's on pg. 118

Sydney Takeda 2I

304981930 wrote:Clearly I needed to look at this earlier than I did..

For 11b, would you subtract to n=3 from the n=1 or the n=1 from the n=3

n=1 from n=3! (since the electron is transitioning from the third energy level to the first)

Sydney Takeda 2I

Edward Xie 3I wrote:
For question 13A, can someone please explain why the answer is 2.681x10^-26? I got the 2.681, but for some reason I got x10^-23.

Did you remember to convert the mass into kg?

I converted to kg and got the 2.681 part yet still can't manage to get 10^-26 help

Sydney Takeda 2I

Sydney Takeda 2I

For 8b, why can't you use Ek = hc/λ to find the kinetic energy then proceed to solve for frequency using this value + the work function all over h?

Sydney Takeda 2I

I am Sodium Funny 3F wrote:We should all sing happy birthday to him when he walks into to class tomorrow!!!!!

I second this, but does "tomorrow" mean today (Sunday) or Monday (I know class is Monday but it says you posted on Saturday night lol so just wanted to clarify :) )

Sydney Takeda 2I

It was so crowded but I appreciate the practice problems and review session so much!!

Sydney Takeda 2I

the 119th element

Sydney Takeda 2I

Julia Cheng 1B wrote:What did the thermometer say to the graduated cylinder?
"You may have graduated, but I've got many degrees!"

Sydney Takeda 2I

Q: What do you call a tooth in a glass of water?

A: A one molar solution

Sydney Takeda 2I

courtesy of the wonderful world of Twitter

Sydney Takeda 2I

I was doing problem 1.45 in the 6th edition textbook and used the Heisenberg equation (△p△x ≥ h/4π) and solved for △x — making the equation △x ≥ h/(4πm△v) — and got my answer, then when I was checking it in the solutions manual the problem was worked out using △x = (1/2)(h/m△v), but I got the same a...

Sydney Takeda 2I

Does the number of posts you have roll over to the next week? Like if you were to have 1 post one week and then 5 the next, would that count as 6 points?

Sydney Takeda 2I

Constructive interference is when two waves are in phase, basically meaning the waves are combined and thus result in a greater amplitude; destructive interference is the opposite scenario, where two waves are out of phase and thus cancel (entirely or partially) each other out, resulting in a smalle...

Sydney Takeda 2I

Can someone explain this equation?

Sydney Takeda 2I

What kind of dogs do chemists have?

LABORATORY RETRIEVERS :)

Sydney Takeda 2I

What do you do with a sick chemist?

If you can't helium, and you can't curium, then you might as well barium.

Sydney Takeda 2I

While doing these types of problems it gets a little confusing determining which type of energy (photon, required to remove e-, or excess/kinetic) either for which I'm solving or given. Are there any key words within a question to look for to help differentiate them?

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