Search found 67 matches

by 904837647
Sun Mar 17, 2019 9:36 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Le Chatlier Principle
Replies: 7
Views: 753

Re: Le Chatlier Principle

A catalyst only affects the reaction rate. Products, reactants, equilibrium constants etc would not change.
by 904837647
Sun Mar 17, 2019 8:25 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 61
Views: 37124

Re: Chemistry News

https://www.sciencedaily.com/releases/2 ... 100629.htm

Since we've been talking about Catalyst in class, here's an interesting article.
by 904837647
Sun Mar 17, 2019 8:23 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 61
Views: 37124

Re: Chemistry News

by 904837647
Sun Mar 17, 2019 8:17 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

How did the hipster chemist burn his hand?
He picked up his beaker before it was cool.
by 904837647
Sun Mar 17, 2019 8:08 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Why do chemists find working with ammonia easy?
Because it’s pretty basic stuff.
by 904837647
Sun Mar 17, 2019 8:04 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

I tried writing jokes about the periodic table…
…but I realized I wasn’t quite in my element.
by 904837647
Sun Mar 17, 2019 8:03 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

https://www.google.com/search?q=chemistry+jokes&rlz=1C1CHZL_enUS737US737&tbm=isch&source=iu&ictx=1&fir=nqu933a92n6OtM%253A%252CnAThXZM2Vmq5BM%252C_&vet=1&usg=AI4_-kT0J-I8CWv_qn2XCfz6O4xx3RMeOA&sa=X&ved=2ahUKEwi1_NHY2YrhAhVoHzQIHRI_DWsQ9QEwBnoECAAQDg#imgrc=jtdNoMy...
by 904837647
Sun Mar 17, 2019 7:20 pm
Forum: Van't Hoff Equation
Topic: Van't Hoff use
Replies: 13
Views: 460

Re: Van't Hoff use

The van 't Hoff equation can be used to explore the changes in state functions in a thermodynamic system
by 904837647
Sun Mar 17, 2019 7:15 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Effect of increased concentration on equilibrium
Replies: 9
Views: 500

Re: Effect of increased concentration on equilibrium

Think of Le Chatelier's Principle. If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change.
by 904837647
Sun Mar 17, 2019 7:11 pm
Forum: Administrative Questions and Class Announcements
Topic: Chemistry community posts
Replies: 5
Views: 338

Re: Chemistry community posts

I'm sure it's the same. As long as you have 30 posts by the end of the quarter you should get full points.
by 904837647
Sun Mar 17, 2019 7:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student [ENDORSED]
Replies: 147
Views: 84081

Re: Advice from a Medical Student [ENDORSED]

What made you want to go to med school?
by 904837647
Sun Mar 17, 2019 7:04 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Grade Release Date?
Replies: 7
Views: 370

Re: Final Grade Release Date?

Does anyone know if the answer key to the final will be posted?
by 904837647
Sun Mar 17, 2019 7:00 pm
Forum: Administrative Questions and Class Announcements
Topic: How to list Chem_Mod posts
Replies: 10
Views: 32039

Re: How to list Chem_Mod posts

Thank you!
by 904837647
Sun Mar 17, 2019 6:59 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 61
Views: 37124

Re: Chemistry News

https://www.sciencedaily.com/releases/2 ... 084905.htm

Here's some cool crystals that emit light when heated.
by 904837647
Sun Mar 17, 2019 6:56 pm
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 61
Views: 37124

Re: Chemistry News

https://www.sciencedaily.com/releases/2 ... 123632.htm

Learn how DNA and RNA copying has imrpoved!
by 904837647
Sun Mar 17, 2019 6:52 pm
Forum: Ideal Gases
Topic: Reading the textbook [ENDORSED]
Replies: 129
Views: 75224

Re: Reading the textbook [ENDORSED]

I find that looking at the examples in the book really help understand how each concept is applied. Doing the hw problems after covering the concepts also help.
by 904837647
Sun Mar 17, 2019 6:48 pm
Forum: Student Social/Study Group
Topic: Chemistry Community
Replies: 3
Views: 425

Re: Chemistry Community

I believe they just [censored] all your posts at the ended of the quarter. I'm not quite sure how it works though because I realized that I was posting the Chem14A instead of 14B but they seemed to be the same page.
by 904837647
Sun Mar 17, 2019 6:44 pm
Forum: Administrative Questions and Class Announcements
Topic: Lavelle's other classes
Replies: 3
Views: 263

Re: Lavelle's other classes

Lavelle doesn't teach 14C?
by 904837647
Sun Mar 17, 2019 6:35 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Organic chemistry is difficult. Those who study it have alkynes of trouble.
by 904837647
Sun Mar 17, 2019 6:33 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Making bad chemistry jokes because all the good ones Argon
by 904837647
Sun Mar 17, 2019 6:32 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Why do chemists like nitrates so much?
They're cheaper than day rates.
by 904837647
Sun Mar 17, 2019 6:30 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Did you know that you can cool yourself to -273.15˚C and still be 0k?
by 904837647
Sun Mar 17, 2019 6:24 pm
Forum: *Enzyme Kinetics
Topic: Catalysts
Replies: 7
Views: 258

Re: Catalysts

Catalyst should only affect the chemical rate of the reaction. The catalyst itself is not altered nor is the equilibrium. I don't think they affect the reactants or the products.
by 904837647
Sun Mar 17, 2019 6:21 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: What is pKa and Ka exactly?
Replies: 11
Views: 1090

Re: What is pKa and Ka exactly?

The acid dissociation constant, Ka, is a quantitative indicator of the strength of an acid in a solution. pKa is simply the negative log of ka.
by 904837647
Sun Mar 17, 2019 6:17 pm
Forum: Van't Hoff Equation
Topic: Temp Units
Replies: 11
Views: 320

Re: Temp Units

It's in Kelvin.
by 904837647
Sun Mar 17, 2019 6:14 pm
Forum: Van't Hoff Equation
Topic: Temp Units
Replies: 11
Views: 320

Re: Temp Units

It's in Kelvin.
by 904837647
Sun Dec 09, 2018 9:06 pm
Forum: General Science Questions
Topic: Final Grades
Replies: 2
Views: 325

Final Grades

I know we just took our final, but I was just curious as to when final grades will be posted.
by 904837647
Sun Dec 09, 2018 3:42 am
Forum: Biological Examples
Topic: Cisplatin
Replies: 7
Views: 317

Re: Cisplatin

Will cisplatin be apart of what we need to know on the final?
by 904837647
Sun Dec 09, 2018 3:37 am
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: strength of base
Replies: 4
Views: 215

Re: strength of base

The bond strengths of acids and bases are implied by the relative amounts of molecules and ions present in solution. Strong acids have mostly ions in solution and weak acids exist mostly as molecules with only a few ions in solution.
by 904837647
Sun Dec 09, 2018 3:33 am
Forum: Naming
Topic: Chloro vs Chlorito
Replies: 8
Views: 324

Re: Chloro vs Chlorito

I would go based off of the ones Lavelle has on his website.
by 904837647
Sun Dec 09, 2018 3:30 am
Forum: Trends in The Periodic Table
Topic: 2nd Ionization Energy
Replies: 2
Views: 193

2nd Ionization Energy

Will we be test on 2nd Ionization energy? I was working on a problem in Ch 2 (6th edition) and found that none of the 2nd ionization questions was listed on the hw.
by 904837647
Sun Dec 09, 2018 3:27 am
Forum: Calculating the pH of Salt Solutions
Topic: 6th Edition Example 12.10 -12.11
Replies: 2
Views: 219

Re: 6th Edition Example 12.10 -12.11

Anything covered in the HW is material the test will cover. So yes.
by 904837647
Sun Dec 09, 2018 3:25 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: magnetism
Replies: 1
Views: 263

Re: magnetism

According to the Pauli Exclusion Principle which states that no two electrons may occupy the same quantum state at the same time, the electron spins are oriented in opposite directions. This causes the magnetic fields of the electrons to cancel out; thus there is no net magnetic moment, and the atom...
by 904837647
Sun Dec 09, 2018 3:22 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Outline 6 Box 12.1
Replies: 2
Views: 77

Re: Outline 6 Box 12.1

I would practice both just in case.
by 904837647
Sun Dec 09, 2018 3:20 am
Forum: Photoelectric Effect
Topic: Finding frequency
Replies: 2
Views: 2003

Re: Finding frequency

E=hv!! So substitute planck's constant for h and set that equation= to work function + Ek
by 904837647
Sun Dec 09, 2018 3:17 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: bond order
Replies: 4
Views: 221

Re: bond order

i believe you do. They form other bonds to achieve stability.
by 904837647
Sun Dec 09, 2018 3:07 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Elements we have to memorize for the Midterm
Replies: 4
Views: 272

Re: Elements we have to memorize for the Midterm

Lavelle always provides a periodic table for exams so I doubt it.
by 904837647
Sun Dec 09, 2018 3:04 am
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 61
Views: 37124

Re: Chemistry News

Hilda Sauceda 3C wrote:does anyone know is there is gonna be a study guide?


There's a practice final posted somewhere in the chemistry community created by one of the UAs. They said it would closely resemble Lavelle's exam.
by 904837647
Sun Dec 09, 2018 3:03 am
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 61
Views: 37124

Re: Chemistry News

This article discusses a new battery concept based on fluoride ions that could potentially expand lifespan so we would only have to charge our phones twice a month!!

https://www.sciencedaily.com/releases/2 ... 141209.htm
by 904837647
Sun Dec 09, 2018 2:59 am
Forum: Student Social/Study Group
Topic: Chemistry News
Replies: 61
Views: 37124

Re: Chemistry News

by 904837647
Sun Dec 09, 2018 2:57 am
Forum: General Science Questions
Topic: Studying Methods
Replies: 6
Views: 438

Re: Studying Methods

Khan academy is also very helpful!!!
by 904837647
Sun Dec 09, 2018 2:56 am
Forum: General Science Questions
Topic: Studying Methods
Replies: 6
Views: 438

Re: Studying Methods

Khan academy is also very helpful!!!
by 904837647
Sun Dec 09, 2018 2:54 am
Forum: Bond Lengths & Energies
Topic: Bond Length
Replies: 1
Views: 215

Re: Bond Length

I think it would be F2^-1, but not quite sure.
by 904837647
Sun Dec 09, 2018 2:39 am
Forum: Lewis Acids & Bases
Topic: SO3 acid or base?
Replies: 2
Views: 358

Re: SO3 acid or base?

SO3 is a non-metal oxide and non-metal oxides are acidic in nature. The aqueous solution of acidic oxides donates protons, therefore SO3 is an acidic oxide
by 904837647
Sun Dec 09, 2018 2:35 am
Forum: Lewis Acids & Bases
Topic: 6th Edition 12.49
Replies: 2
Views: 212

Re: 6th Edition 12.49

the greater the pKb value the weaker the base. In this case hypobromite has the smallest at 5.31 compared to morphine's 5.79, therefore being the strongest.
by 904837647
Sun Dec 09, 2018 2:27 am
Forum: Administrative Questions and Class Announcements
Topic: Worksheet 4 Key
Replies: 1
Views: 122

Worksheet 4 Key

I'm trying to check my answers for worksheet 4 but I couldn't find the answer key anywhere. Was there ever one?
by 904837647
Sun Dec 09, 2018 2:25 am
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student [ENDORSED]
Replies: 147
Views: 84081

Re: Advice from a Medical Student [ENDORSED]

Thank you Ashley! I agree, Lavelle is a great professor and he's extremely helpful!
by 904837647
Sun Dec 09, 2018 2:22 am
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 69
Views: 22615

Re: formula units [ENDORSED]

Are their specific units that we should be using? I usually just follow the units given in the problem, but as I was working through one the answer was given in mL instead of L.
by 904837647
Sun Dec 09, 2018 2:18 am
Forum: General Science Questions
Topic: Studying Methods
Replies: 6
Views: 438

Re: Studying Methods

i've been reviewing the discussion worksheets and I have found those very helpful.
by 904837647
Sun Dec 09, 2018 2:16 am
Forum: General Science Questions
Topic: Equations Given on the Final
Replies: 2
Views: 256

Equations Given on the Final

Will the Constants and Formulas given be the same as the previous tests/midterms? Or will it provide more information?
by 904837647
Sun Dec 09, 2018 2:14 am
Forum: General Science Questions
Topic: Can We Take The Final In Pencil?
Replies: 14
Views: 472

Re: Can We Take The Final In Pencil?

It must be written in pencil if you're think you will need to ask for regrade, but this is a final so i doubt it will matter.
by 904837647
Sun Dec 09, 2018 2:12 am
Forum: Ideal Gases
Topic: Reading the textbook [ENDORSED]
Replies: 129
Views: 75224

Re: Reading the textbook [ENDORSED]

I have my roommates old course reader which is basically Lavelle's lectures condensed. I find it helpful to align my notes/examples given in class with the course reader as a refresher of what was covered in lecture. For a better understanding of the concepts I read that specific chapter in the text...
by 904837647
Sat Dec 08, 2018 3:42 pm
Forum: Student Social/Study Group
Topic: Structure of the final
Replies: 4
Views: 308

Structure of the final

Does anybody know how many questions will be on the final?
by 904837647
Sat Dec 08, 2018 3:42 pm
Forum: Administrative Questions and Class Announcements
Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
Replies: 118
Views: 7775

Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]

Will the final be similar to this practice final?
by 904837647
Sat Dec 08, 2018 3:39 pm
Forum: Administrative Questions and Class Announcements
Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
Replies: 118
Views: 7775

Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]

THANK YOU SO MUCH!!! THIS IS DEFINITELY A HUGE HELP!!
by 904837647
Thu Nov 29, 2018 3:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Two chemists go into a restaurant.
The first one says "I think I'll have an H2O."
The second one says "I think I'll have an H2O too" -- and he died.
by 904837647
Thu Nov 29, 2018 3:50 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Q: What do you do with a sick chemist?
A: If you can't helium, and you can't curium, then you might as well barium.
by 904837647
Thu Nov 29, 2018 3:50 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019904

Re: Post All Chemistry Jokes Here

Q: What is the chemical formula for "coffee"?
A: CoFe2
by 904837647
Fri Nov 02, 2018 7:06 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Elements we have to memorize for the Midterm
Replies: 4
Views: 272

Re: Elements we have to memorize for the Midterm

I’m assuming they’ll provide a periodic table like they have in the test. I doubt they make us memorize all the elements.
by 904837647
Fri Nov 02, 2018 7:03 pm
Forum: Administrative Questions and Class Announcements
Topic: Scantron
Replies: 6
Views: 149

Re: Scantron

So the midterm should be formatted just like the test?
by 904837647
Fri Nov 02, 2018 6:57 pm
Forum: Student Social/Study Group
Topic: Midterm
Replies: 15
Views: 444

Re: Midterm

Do we know how many questions from each section will be in the test? Like how many from the fundamentals, quantum, and chemical bonds? I know there’s 8 but how is it going to be divided?
by 904837647
Fri Nov 02, 2018 6:57 pm
Forum: Student Social/Study Group
Topic: Midterm
Replies: 15
Views: 444

Re: Midterm

Do we know how many questions from each section will be in the test? Like how many from the fundamentals, quantum, and chemical bonds? I know there’s 8 but how is it going to be divided?
by 904837647
Wed Oct 24, 2018 4:27 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 2.53 Predict how many unpaired electrons...
Replies: 2
Views: 48

2.53 Predict how many unpaired electrons...

For problem 23 in chapter 2, after writing the ground-state electron configuration for each element it asks us to predict the number of unpaired electrons. How exactly do we know which ones will be unpaired?
by 904837647
Fri Oct 12, 2018 8:55 am
Forum: Student Social/Study Group
Topic: Test Results
Replies: 1
Views: 106

Test Results

Will the test result be posted on CCLE or will we have to wait to get our test back?
by 904837647
Fri Oct 12, 2018 8:45 am
Forum: Significant Figures
Topic: sig figs urgent question!
Replies: 12
Views: 618

Re: sig figs urgent question!

When there is a decimal in the number always count from left to right starting with the non zero number, any zero in between the nonzeros should still be accounted for. However, if there is no decimal then count from right to left starting with the first non zero number.
by 904837647
Fri Oct 12, 2018 8:40 am
Forum: SI Units, Unit Conversions
Topic: Homework for Week 2
Replies: 16
Views: 326

Re: Homework for Week 2

What's the late policy for hw? I couldn't find it on Lavelle's syllabus, maybe i just missed it but I didn't realize hw was now being collected during discussion.

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