How does an electron sounds when it falls on the ground?
Planck!
Search found 25 matches
- Sat Mar 18, 2017 8:52 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3916290
- Sat Mar 18, 2017 8:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3916290
Re: Post All Chemistry Jokes Here
If you’re not part of the solution, you’re part of the precipitate!
- Sat Mar 18, 2017 8:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3916290
Re: Post All Chemistry Jokes Here
H2O is the formula for water, what is the formula for ice? — H2O cubed
- Sat Mar 18, 2017 8:47 pm
- Forum: *Alkenes
- Topic: Are alkenes and alkynes considered functional groups?
- Replies: 4
- Views: 1660
Re: Are alkenes and alkynes considered functional groups?
I would label them as functional groups just in case so we don't lose points unnecessarily.
- Sat Mar 18, 2017 8:41 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 633101
Re: Saying Thank You to Dr. Lavelle
Dear Dr. Lavelle,
Thanks for being the backbone of all pre-med students at UCLA, your enthusiasm and passion for teaching really made chemistry one of the best classes I have ever taken.
Regards,
Aditya Mamtora
Thanks for being the backbone of all pre-med students at UCLA, your enthusiasm and passion for teaching really made chemistry one of the best classes I have ever taken.
Regards,
Aditya Mamtora
- Sat Mar 18, 2017 8:36 pm
- Forum: *Cycloalkanes
- Topic: Cyclohexane Chair Conformation with Substituents
- Replies: 2
- Views: 1512
Re: Cyclohexane Chair Conformation with Substituents
The larger substituent group among all the substituents prefers to be in the equatorial position.
- Sat Mar 18, 2017 4:22 pm
- Forum: *Alkenes
- Topic: Naming of Alkenes
- Replies: 1
- Views: 1445
Naming of Alkenes
When naming alkenes with multiple double bonds, suppose a hexene with 2 double bonds, do we end the molecule name with hexa diene or just hexdiene?
- Tue Feb 21, 2017 1:02 am
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 2 Winter 2017
- Replies: 160
- Views: 25470
Re: Quiz 2 Winter 2017
ChristineCastanon_1B wrote:Could anybody briefly explain how you did number 11?
We do not need to know how do do #11 for Quiz #2
- Sat Jan 28, 2017 5:59 pm
- Forum: Phase Changes & Related Calculations
- Topic: Phase Changes
- Replies: 2
- Views: 575
Phase Changes
Why is it that during a phase change, the temperature can still remain the same if heat is still being added?
- Sat Jan 28, 2017 5:56 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3916290
Re: Post All Chemistry Jokes Here
If the Silver Surfer and Iron Man team up, they'd be alloys.
- Sat Jan 28, 2017 5:56 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3916290
Re: Post All Chemistry Jokes Here
A photon checks into a hotel and is asked if he needs any help with his luggage. He says, "No, I'm traveling light."
- Sat Jan 28, 2017 5:55 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3916290
Re: Post All Chemistry Jokes Here
Two chemists go into a bar. 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 Jan 28, 2017 5:54 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Entropy and Temperature
- Replies: 1
- Views: 475
Re: Entropy and Temperature
Based on information from my TA there will be no derivations on the quiz.
- Sat Dec 03, 2016 8:35 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Dissociation energy and Molecular orbital energy level diagram
- Replies: 1
- Views: 2071
Re: Dissociation energy and Molecular orbital energy level diagram
Yeah you can because the stronger the bond the more the dissociation energy and we can find relative bond strength through molecular orbital theory through Bond order (1/2(bonding + anti bonding))
- Sat Dec 03, 2016 8:33 pm
- Forum: *Titrations & Titration Calculations
- Topic: What is the correct number of significant figures for 13.27(b)?
- Replies: 3
- Views: 1206
Re: What is the correct number of significant figures for 13.27(b)?
Since we are measuring pH the correct number of sig figs is the number of decimal places used when finding pH, which is 2 decimal places because 14.00 has digits that go up to 2 past the point.
- Sat Dec 03, 2016 8:30 pm
- Forum: *Titrations & Titration Calculations
- Topic: 2007 Final Q5
- Replies: 2
- Views: 1032
Re: 2007 Final Q5
I'm pretty sure we have to memorize the list of weak acids and bases/strong acids and bases for the final.
- Sat Dec 03, 2016 8:21 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Problem with 2C on 2014 Final
- Replies: 1
- Views: 524
Re: Problem with 2C on 2014 Final
You can't write it as [Kr] because there are many ions that are isoelectronic with [Kr] so just using [Kr] would be too unspecific. Writing in in the expanded form allows us to know for sure that the ion we are talking about is Br-
- Wed Nov 02, 2016 1:13 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angle
- Replies: 1
- Views: 500
Re: Bond Angle
We just have to say less than 109.5 because VSEPR only allows us to know qualitatively the bond angles. It is less than 109.5 because the two lone pairs above the oxygen force down the bonds making the two bonds closer to each other.
- Sun Oct 30, 2016 12:24 pm
- Forum: Hybridization
- Topic: Process of determining bond types
- Replies: 1
- Views: 471
Re: Process of determining bond types
You actually can figure out all the bonds after just drawing the lewis structure but if you automatically draw it in the shape you need then it is even easier. Once you have the bonds (single, double, triple) represented in the lewis structure you can just use those to determine how many sigma and p...
- Sun Oct 23, 2016 2:23 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Wanted Formal Charge
- Replies: 2
- Views: 713
Re: Wanted Formal Charge
We want the formal charge to equal zero because that means the charges are evenly distributed throughout the molecule putting it in its most stable state. To get the overall formal charge of the molecule we have to calculate the individual formal charges of each atom [FC= V+(L+S/2)] and add them tog...
- Sat Oct 15, 2016 3:11 pm
- Forum: Lewis Structures
- Topic: Drawing a Lewis Structure
- Replies: 1
- Views: 423
Drawing a Lewis Structure
I'm a bit confused, what is the order we need to draw our electron dots in for the lewis structure or does it not matter as long as we stick to one pattern the whole time?
- Fri Oct 07, 2016 6:12 pm
- Forum: Properties of Light
- Topic: Question 1.25 on the HW
- Replies: 2
- Views: 2345
Question 1.25 on the HW
1.25 Sodium vapor lamps, used for public lighting, emit yellow light of wavelength 589 nm. How much energy is emitted by (a) an excited sodium atom when it generates a photon; (b) 5.00 mg of sodium atoms emitting light at this wavelength; (c) 1.00 mol of sodium atoms emitting light at this wavelengt...
- Fri Oct 07, 2016 6:08 pm
- Forum: Significant Figures
- Topic: When to Apply Sig Figs [ENDORSED]
- Replies: 2
- Views: 888
Re: When to Apply Sig Figs [ENDORSED]
To maintain the most accurate results, we should only round off our sig figs at the end of the problem.
- Fri Sep 30, 2016 1:03 pm
- Forum: Significant Figures
- Topic: Sig Figs. Problem
- Replies: 4
- Views: 1207
Re: Sig Figs. Problem
When I was in my discussion, my TA told us that the best way to use sig figs in your final answer is to keep as many sig figs as the least amount given during the problem.
- Fri Sep 30, 2016 12:56 pm
- Forum: Student Social/Study Group
- Topic: De Neve Study Group
- Replies: 35
- Views: 4849
Re: De Neve Study Group
Hey guys, I'm in Cedar. If we can get the DeNeve group going that'd be a huge help.