Search found 54 matches
- Sun Mar 18, 2018 3:24 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry JokesDid you know that you can cool yourself to -273.15˚C and still be 0k? Here
Did you know that you can cool yourself to -273.15˚C and still be 0K?
- Sun Mar 18, 2018 3:14 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
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.
A: If you can't helium, and you can't curium, then you might as well barium.
- Sun Mar 18, 2018 4:29 am
- Forum: Student Social/Study Group
- Topic: Chemistry Joke
- Replies: 57
- Views: 5386
Re: Chemistry Joke
Don't trust atoms, they make up everything.
- Sun Mar 18, 2018 4:28 am
- Forum: Student Social/Study Group
- Topic: Chemistry Joke
- Replies: 57
- Views: 5386
Re: Chemistry Joke
Helium walks into a bar,
The bar tender says "We don't serve noble gasses in here."
Helium doesn't react.
The bar tender says "We don't serve noble gasses in here."
Helium doesn't react.
- Sun Mar 18, 2018 4:28 am
- Forum: Student Social/Study Group
- Topic: Chemistry Joke
- Replies: 57
- Views: 5386
Re: Chemistry Joke
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.
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.
- Sun Mar 18, 2018 3:52 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What do you call a wheel made of iron?
A: A ferrous wheel.
A: A ferrous wheel.
- Sun Mar 18, 2018 3:51 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What kind of dogs do chemists have?
A: Laboratory Retrievers.
A: Laboratory Retrievers.
- Sun Mar 18, 2018 3:51 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What element is derived from a Norse [censored]?
A: Thorium.
A: Thorium.
- Sun Mar 18, 2018 3:51 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: Why do chemists enjoy working with ammonia?
A: Because it's pretty basic stuff.
A: Because it's pretty basic stuff.
- Sun Mar 18, 2018 3:50 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What do you call a clown who's in jail?
A: A silicon.
A: A silicon.
- Sun Mar 18, 2018 2:35 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Preventing Charge Buildup
- Replies: 3
- Views: 605
Re: Preventing Charge Buildup
^ Great explanation!
- Sat Mar 17, 2018 10:44 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: what does W stand for in S=klnW
- Replies: 3
- Views: 7185
Re: what does W stand for in S=klnW
W=degeneracy=(# of states)^(# of particles)
- Sat Mar 17, 2018 7:35 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Is enthalpy a state function?
- Replies: 12
- Views: 2259
- Sat Mar 17, 2018 7:34 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What is the show cesium and iodine love watching together?
A: CSI
A: CSI
- Sat Mar 17, 2018 7:33 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
My teacher threw Sodium Chloride at me.
That’s a salt!
That’s a salt!
- Sat Mar 17, 2018 7:32 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
You must be a compound of Beryllium and Barium,
because you’re a total BaBe
because you’re a total BaBe
- Sat Mar 17, 2018 5:16 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Lavelle: Professor by day, wizard by night
- Replies: 6
- Views: 1542
Re: Lavelle: Professor by day, wizard by night
What more can this man do! Definitely Oscar worthy LOL
- Sat Mar 17, 2018 5:11 pm
- Forum: Administrative Questions and Class Announcements
- Topic: FINAL
- Replies: 9
- Views: 1440
Re: FINAL
All topics will be covered on the final. Some functional groups may be on there as well.
- Sat Mar 17, 2018 5:08 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test Grading
- Replies: 4
- Views: 826
Re: Test Grading
Don't remember anything about that. :(
- Sat Mar 17, 2018 5:07 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Topics
- Replies: 3
- Views: 490
Re: Final Topics
^ Yup. Final will be covering all topics.
- Sat Mar 17, 2018 5:05 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Class Study Google Doc
- Replies: 5
- Views: 990
Re: Class Study Google Doc
Thank you!! :)
- Tue Mar 13, 2018 12:56 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Discussion Sections
- Replies: 2
- Views: 482
Re: Discussion Sections
Yep! This week is the last week of classes this quarter. :)
- Tue Jan 23, 2018 4:12 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What do you call a clown who's in jail?
A: A silicon.
A: A silicon.
- Tue Jan 23, 2018 4:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What kind of dogs do chemists have?
A: Laboratory Retrievers
A: Laboratory Retrievers
- Sun Jan 21, 2018 10:40 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Week 3 Test Topic is endorsed
- Replies: 37
- Views: 4940
Re: Week 3 Test Topic is endorsed
I believe any necessary values would be given as well.
- Sun Jan 21, 2018 10:37 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Week 3 Test Topic is endorsed
- Replies: 37
- Views: 4940
Re: Week 3 Test Topic is endorsed
Yes, a formula sheet with constants and equations will be provided.
Here's the sheet: https://lavelle.chem.ucla.edu/wp-conten ... ations.pdf
Here's the sheet: https://lavelle.chem.ucla.edu/wp-conten ... ations.pdf
- Sun Jan 21, 2018 10:35 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What do you call a tooth in a glass of water?
A: One molar solution.
A: One molar solution.
- Sun Jan 21, 2018 10:35 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What did the bartender say when oxygen, hydrogen, sulfur, sodium, and phosphorous walked into his bar?
A: OH SNaP!
A: OH SNaP!
- Sun Jan 21, 2018 10:34 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: If H2O is the formula for water, what is the formula for ice?
A: H2O cubed.
A: H2O cubed.
- Mon Dec 11, 2017 2:06 am
- Forum: Naming
- Topic: Iron v ferrate in coordination compound naming
- Replies: 8
- Views: 5365
Re: Iron v ferrate in coordination compound naming
I believe we really just need to know Ferrate only, although there are those other exceptions.
- Mon Dec 11, 2017 1:50 am
- Forum: Biological Examples
- Topic: Hemoglobin
- Replies: 5
- Views: 1062
Re: Hemoglobin
Hemoglobin transports O2 in blood.
- Mon Dec 11, 2017 1:48 am
- Forum: Balancing Chemical Reactions
- Topic: Net Number of moles produced [ENDORSED]
- Replies: 3
- Views: 747
Re: Net Number of moles produced [ENDORSED]
Net number of moles would be the total number of moles on the product side minus the total number of moles on the reactant side.
- Mon Dec 11, 2017 1:47 am
- Forum: Empirical & Molecular Formulas
- Topic: Finals Question about Empirical Formula [ENDORSED]
- Replies: 2
- Views: 605
Re: Finals Question about Empirical Formula [ENDORSED]
Yeah, I solved it that way too. I believe that should be the correct way.
- Mon Dec 11, 2017 1:45 am
- Forum: Hybridization
- Topic: Bond Angles [ENDORSED]
- Replies: 4
- Views: 7568
Re: Bond Angles [ENDORSED]
Yes, sp3 hybridized would still be tetrahedral.
- Mon Dec 11, 2017 1:24 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: shape [ENDORSED]
- Replies: 2
- Views: 512
Re: shape [ENDORSED]
I believe it was just the vsepr shapes that we had to figure out.
- Sun Dec 10, 2017 1:14 am
- Forum: DeBroglie Equation
- Topic: Wavelike properties
- Replies: 3
- Views: 455
Re: Wavelike properties
Yes, so if the wavelength is smaller than 10^-15, then it does not have measurable wavelike properties.
- Sun Dec 10, 2017 1:09 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Assumption for Subtracting X in Ka or Kb calculation [ENDORSED]
- Replies: 3
- Views: 834
Re: Assumption for Subtracting X in Ka or Kb calculation [ENDORSED]
Make sure to not assume that x=0 though!
- Sun Dec 10, 2017 1:06 am
- Forum: Hybridization
- Topic: sp3 hybridization
- Replies: 6
- Views: 1171
Re: sp3 hybridization
Lone pairs do count as one area of electron density. Trigonal planar would be sp2 hybridized. Seesaw would be sp3d hybridized.
- Sun Dec 10, 2017 1:03 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Bond Order
- Replies: 4
- Views: 773
Re: Bond Order
Bond order would equal the number of bonding electrons subtracted by the number of anti-bonding electrons, then divide the difference by two.
- Sat Dec 09, 2017 9:52 pm
- Forum: Electronegativity
- Topic: Carbon and Sulfur electronegativity?
- Replies: 4
- Views: 14982
Carbon and Sulfur electronegativity?
Why is Carbon less electronegative than sulfur? The periodic trend for electronegativity is that it increases going up and to the right, so why would Carbon be less electronegative?
- Sat Dec 09, 2017 6:06 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
A neutron walks into a bar. He asks the bartender, "How much for a beer?" The bartender offers him a warm smile and says, "For you, no charge".
- Sat Dec 09, 2017 6:04 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
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.
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.
- Sat Dec 09, 2017 6:02 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
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.
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.
- Sat Dec 09, 2017 6:00 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Did you know that you can cool yourself to -273.15˚C and still be 0K?
- Sat Dec 09, 2017 5:55 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: T-shaped and Trigonal Pyramidal
- Replies: 6
- Views: 842
Re: T-shaped and Trigonal Pyramidal
T-shaped has 3 atoms and 2 lone pair electrons around the central atom.
Trigonal pyramidal has 3 atoms and 1 lone pair electron around the central atom.
Trigonal pyramidal has 3 atoms and 1 lone pair electron around the central atom.
- Sat Dec 09, 2017 5:47 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Exceptions to the Octet Rule
- Replies: 4
- Views: 635
Re: Exceptions to the Octet Rule
Elements in Period 3 and beyond are exceptions to the octet rule!
- Sun Dec 03, 2017 10:28 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
What did the thermometer say to the graduated cylinder?
At least I have a degree.
At least I have a degree.
- Sun Dec 03, 2017 10:27 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
I think I left Bromine and Boron in the cabinet.
BrB!
BrB!
- Sun Oct 29, 2017 11:27 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Q: What kind of fish is made out of 2 Sodium atoms?
A: 2NA
A: 2NA
- Sun Oct 29, 2017 11:23 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
My teacher threw Sodium Chloride at me.
That's a salt!
That's a salt!
- Mon Oct 16, 2017 8:17 pm
- Forum: Properties of Light
- Topic: Problem 1.23
- Replies: 3
- Views: 513
Re: Problem 1.23
I believe the conversion is given on a sheet of constants and equations, which is attached to the tests. Here is the sheet: https://lavelle.chem.ucla.edu/wp-conten ... ations.pdf
- Mon Oct 16, 2017 8:04 pm
- Forum: Properties of Light
- Topic: Homework 1.13
- Replies: 2
- Views: 359
Re: Homework 1.13
The values 4 and 16 comes from squaring n=2 and n=4, using the Rydberg equation (En=-hR/n^2).
- Sun Oct 15, 2017 11:05 pm
- Forum: Properties of Light
- Topic: Chapter 1: Question 1.9 [ENDORSED]
- Replies: 7
- Views: 1705
Re: Chapter 1: Question 1.9 [ENDORSED]
You can use the frequencies that you found, and were given to you, to match the events. A lower frequency would mean that it will have a weaker radiation, and higher frequencies would mean it is a stronger type of radiation.
- Sun Oct 15, 2017 10:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891057
Re: Post All Chemistry Jokes Here
Silver walks up to Gold in a bar and says, "AU, get outta here!"