CHEMISTRY COMMUNITY

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Jasmine Fendi 1D wrote:What would be an applicable example of a 0 order reaction? When would that make sense?

When it is zero order, it means that the k value is a constant. The rate law would be equal to k.

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Two chemists walk into a bar.

One says, "I'll have H2O."

The other says, "Ill have H2O too."

The second chemist died.

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Daniel Yu 1E wrote:What are the units for k in a zero order reaction? What are the units for the reactants of a zero order reaction? I don't understand why the units are what they are can someone help me?

For a zero order reaction it would be M/s

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Timmy Nguyen Dis 1I wrote:How do we know which order the reaction is?

You can use the given rate constant and the units or from a table with given concentrations and rates.

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Giselle Littleton 1F wrote:How do you get the overall order of a reaction?

You have to add the exponents of all the reactants in the rate equation.

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Question at interview: What is nitrate (nite rate or night rate)?

Answer: double time.

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Q: What emotional disorder does a gas chromatograph suffer from?

A: Separation anxiety.

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Q: What was Avogadro's favorite sport?

A: Golf, because he always got a mole-in-one.

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Two chemists go into a restaurant.
The first chemist says, "I'll have H2O."
The second chemist says, "I'll have an H2O too."... and he died.

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A neutron walks into a shop and says,"I'd like a coke."
The shopkeeper serves up the coke.
"How much will that be?" asks the neutron.
The shopkeeper replies, "For you? No charge."

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The optimist sees the glass half full.
The pessimist sees the glass half empty.
The chemist see the glass completely full, half in the liquid state and half in the vapor state.

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Q: What did one ion say to the other?

A: I've got my ion you.

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Q: Why did the chemist sole and heel his shoes with silicone rubber?

A: To reduce his carbon footprint.

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Florence Flask was getting ready for the opera.

All of a sudden, she screamed: "Erlenmeyer, my joules! Somebody has stolen my joules!"

The husband replied, "Calm down, honey. We'll find a solution."

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Q: If H20 is water, what is H204?

A: Drinking, bathing, washing, swimming, etc.

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Q: What did one titration say to the other?

A: "Let's meet at the endpoint."

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Q: What did the Mass Spectrometer say to the Gas Chromatograph?

A: Breaking up is hard to do.

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Q: When one physicist asks another, "What's new?" what's the typical response?

A:C over lambda.

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Q: What happens when spectroscopists are idle?

A: They turn from notating nuclear spins to notating unclear puns.

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Q: What kind of dogs do chemists have?

A: Laboratory Retrievers

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Q: What do chemists call a benzene ring where the carbon atoms are replaced with iron atoms?

A: A ferrous wheel.

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Q: What happened to the man stopped for having sodium chloride and a 9-volt in his car?

A: He was booked for a salt and battery.

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Q: What was Avogadro's favorite sport?

A: Golf, because he always got a mole-in-one.

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Q: Why can't lawyers do NMR?

A: Bar magnets have poor homogeneity.

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Q: What element is a girl's future best friend?

A: Carbon.

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Q: Why do chemists enjoy working with ammonia?

A: Because it's pretty basic stuff.

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

A: A one molar solution.

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Old chemists never die, they just stop reacting.

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Q: How Dreamwork's chemistry movie will be named?

A: How to train your Argon!

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Q: Carbon and hydrogen went on a date.

A: I heard they really bonded

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Q: How do you cure a sick balloon?

A: You helium up!

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Q: What’s the dullest element?

A: Bohrium!

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Q: Why should you go shopping with neutrons?

A: Because wherever they go, there’s no charge!

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Q: Why are chemists great for solving problems?

A: Because they always have a solution!

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Clarice Chui 2C wrote:Which is equation(s) would you be solving that uses Cv or Cp?

Cv is the specific heat capacity you use for constant volume, and Cp is the specific heat capacity for constant pressure.

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Q: What is HIJKLMNO?

A: H20

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Q: If H2O is the formula for water, then what is the formula for ice?

A: H2O cubed!

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Q: Why do people call organic chemistry the meanest science?

A: Because it’s always pushing electrons around!

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005384106 wrote:What is the difference between boiling an melting point?

Boiling point is the temperature a substance has to reach in order for it to boil (liquid to gas), and the melting point is the temperature a substance has to reach in order for it to melt (with solid items since they are melting).

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So I’m starting to understand a little bit better about endothermic and exothermic reactions, but I wanted a little clarification here? As temperature increases, so does the equilibrium constant? Sorry, just wanted to have a clear understanding if anything. Yeah, as temperature increases, so will t...

Oduwole 1E

Q: Why did the chemist sole and heel his shoes with silicone rubber?

A: To reduce his carbon footprint.

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Q: What do chemists call a benzene ring with iron atoms replacing the carbon atoms?

A: A ferrous wheel.

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Did you know that you can cool yourself to -273.15˚C and still be 0 k?

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A standup comedian tried writing jokes about the periodic table, but realized he wasn’t quite in his element.

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Tracy Tolentino_2E wrote:When do we use ICE tables? I assumed it was when we had to find concentrations of the products, given K and the initial concentration(s).

You would typically use the ICE tables to try and find/solve for the partial pressures or equilibrium concentrations of reactants and products.

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Q: What kind of fish is made out of 2 sodium atoms?

A: 2 Na

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No Time to Die

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Q: What is the best part about learning about equilibrium?

A: Nothing changes!

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Jaqueline Monreal 2L wrote:I heard it was 3 times a week last quarter , but i think it might depend on how your TA grades

It’s five times a week now.

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Brian J Cheng 1I wrote:Just got an email about discussion sections and thought I would confirm with you guys.

Are there going to be discussion sections this week for Chem 14B?

Discussion sections are still being held this week.

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We might have to since we learned it.

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It can both accept and donate protons (H+), meaning it can also act as either an acid or a base.

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Amphoteric means that the compound can act as both an acid and a base. So you have to see what parts of the compound can act as both an acid or a base.

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The pKA as to be either lower (more acidic) than pH6, or higher (more basic) than pH6. Since 4.22 is less than 6, it is more acidic, meaning it is more positive.

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We shouldn't have to since we were told that was something we would be doing in Chemistry 14B.

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Ka has to do with acids (pH), Kb has to do with bases (pOH), and Kw is a constant.

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Go over everything we did in lecture and in the textbooks, and you'll be fine.

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I don't thin so, because we didn't cover that.

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You should only add be using the the ending -ate when the coordination compound has an overall negative charge.

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KTran 1I wrote:For the final, would we actually need to be able to draw the shape of the molecules and show the sigma and pi bonds?

We shouldn't have to, but we did for test two so you never know.

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Since the book and lecture didn't cover this topic it shouldn't be on the final.

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brennayoung wrote:Do we know up to what topic in the book will be tested on for the final?

Up until the last homework problems.

Oduwole 1E

The more you use them, the more familiar you become with them.

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You only add the ending -ate when the coordination compound has a negative charge.

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There will probably be the periodic table, and a sheet with constants and equations just like the others tests.

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Wait, are all these jokes too basic for you? Because I see no reaction.

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I think these jokes are sodium funny. In fact, I slapped my neon that one!

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Q: What did silver say to gold at the bar?

A: "Au, get outta here!"

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Q: Why did the chemist coat his shoes with silicone rubber?

A: He wanted to reduce his carbon footprint.

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Q: What is "H I J K L M N O"?

A: H2O

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Hilda Sauceda 3C wrote:Does anyone what is going to be on exam three?

Most likely the new material we will be learning in lecture.

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1. Periodic Videos
2. LearnChemE
3. Tyler DeWitt
4. chemistNATE

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Philip wrote:So the more electronegative elements are more likely to get the electron?

Yes. The more electronegative elements are, the more likely they are to gain electrons, because they are almost close to being stable.

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Will there still be a workshop this upcoming week?

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what about the ionization energy of nitrogen? Is It greater than oxygen? Nitrogen has a higher ionization energy, because it will take more energy to remove one electron from nitrogen than from oxygen. This is because nitrogen's 2p orbital is half filled, while oxygen's is partially (4/6) filled. H...

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Q: Want to hear a joke about sodium?

A: Na

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Q: What kind of fish is made up of only 2 sodium atoms?

A: 2Na

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You should definantly draw the resonance structures if asked to do so. If not, you should be able to just draw the most stable Lewis structure for the compound.

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You should draw the resonance structures if specifically asked to do so in the question. If not, you should be ok just drawing one.

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There shouldn't be any questions like that on the midterm.

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Why are chemists great for solving problems?

Because they always have a solution!

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Someone threw sodium chloride at me.

I yelled, “That’s a salt!”

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Did you hear the one about cobalt, radon, and yttrium?

It was CoRnY.

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I tried writing jokes about the periodic table…..but I realized I wasn’t quite in my element.

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What should you do if no one laughs at your chemistry jokes?

Keep telling them until you get a reaction.

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Q: Why does hamburger yield lower energy than steak?

A: Because it's in the ground state.

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Q: What did the bartender say when oxygen, hydrogen, sulfur, sodium, and phosphorous walked into his bar?

A: OH SNaP!

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A proton and a neutron are walking down the street.

The proton says, "Wait, I dropped an electron help me look for it."

The neutron says "Are you sure?"

The proton replies "I'm positive."

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Q: Anyone know any jokes about sodium?

A: Na

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H2O is water and H2O2 is hydrogen peroxide. What is H2O4?

Drinking.

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In case we can't attend the sessions, is there a way to see how the answers were gotten so we can learn the processes involved?

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The atom symbol for confusion:

Um

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I'm out of chemistry jokes. I should really Zinc of a new one.

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Is there any way we can view our grades? I know that for my other courses I've been able to review them on CCLE but I feel that i may have read th e syllabus wrong and would like some clarification so I know if i am receiving my discussion points and homework points. 1. Go to myUCLA 2. Click on the...

Oduwole 1E

A shopper walks into a supermarket and asks an employee,

Shopper: Would you happen to have any sodium hypobromite?

Employee: NaBrO

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Is it possible for the TAs in the step-up program to use past exams to help prepare us for any upcoming tests? I also want to know if there is anyway we can access test #1 that has been given out previous quarters in Dr. Lavelle's class, so we can use them to prepare for our upcoming test next week.

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Where will these workshops be held please?

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Another way to find out how many posts you have done, is to look to the right of one of your posts. There you will find your alias name and the number of posts you have made.

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Personally, I think it is a good idea to review the online modules first, then attend lecture so you have a basic understanding of what is going to be taught. If you still don't understand the topic that well after lecture, or want to go over something that was said in lecture, you can watch the mod...

Oduwole 1E

Q: How often do chemists tell jokes?

A: Periodically

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