Search found 34 matches
- Tue Dec 04, 2018 7:35 pm
- Forum: Naming
- Topic: Textbook Question 9C.1
- Replies: 2
- Views: 264
Re: Textbook Question 9C.1
a) says [Fe(CN)6]^4- however the answer is tetracholoroferrate (II) why is iron called ferrate and why is the charge (II) and not (IV) Each CN contributes to a -1 charge, meaning (CN) 6 has a total charge of -6. If [Fe(CN)6]^4- has a net charge of -4 and (CN)6 contributes to -6 of that charge, Fe m...
- Tue Dec 04, 2018 7:15 pm
- Forum: Naming
- Topic: Oxidation Number
- Replies: 2
- Views: 296
Re: Oxidation Number
Joon Chang 4A wrote:"Describe coordination compounds for the transition metal ions in terms of coordination number,
oxidation number, and types of ligands." This is under Outline 6 and it is in the syllabus so I think it could be on the finals.
Thank u :)
- Tue Dec 04, 2018 6:57 pm
- Forum: Naming
- Topic: Oxidation Number
- Replies: 2
- Views: 296
Oxidation Number
I don't remember going over oxidation number during lecture. Will it be part of the finals?
- Tue Dec 04, 2018 6:41 pm
- Forum: Naming
- Topic: 7th Edition 9C. 1
- Replies: 3
- Views: 321
Re: 7th Edition 9C. 1
Ryan Danis 1K wrote:On question 1a, the name of the coordination compound of [Fe(CN)6]4- is hexacyanoferrate (II) ion. How come the CN is denoted as cyano instead of cyanido in the name of the compound? Thanks!
Lavelle said we add an -o for the anions when we name in class.
- Tue Dec 04, 2018 6:38 pm
- Forum: Naming
- Topic: Textbook Question 9C.1
- Replies: 2
- Views: 291
Textbook Question 9C.1
a) says [Fe(CN)6]^4-
however the answer is tetracholoroferrate (II)
why is iron called ferrate and why is the charge (II) and not (IV)
however the answer is tetracholoroferrate (II)
why is iron called ferrate and why is the charge (II) and not (IV)
- Tue Dec 04, 2018 6:37 pm
- Forum: Naming
- Topic: Textbook Question 9C.1
- Replies: 2
- Views: 264
Textbook Question 9C.1
a) says [Fe(CN)6]^4-
however the answer is tetracholoroferrate (II)
why is iron called ferrate and why is the charge (II) and not (IV)
however the answer is tetracholoroferrate (II)
why is iron called ferrate and why is the charge (II) and not (IV)
- Thu Nov 29, 2018 8:45 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3678678
Re: Post All Chemistry Jokes Here
Not a chem joke, but Lavelle looks like Larry David
- Tue Nov 27, 2018 9:49 pm
- Forum: Student Social/Study Group
- Topic: Discussion on Wednesday
- Replies: 4
- Views: 568
Re: Discussion on Wednesday
Chem_Mod wrote:Email him to find out.
I emailed him, but he didn't get back to me
- Tue Nov 27, 2018 9:46 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: TEST 3
- Replies: 4
- Views: 827
Re: TEST 3
The only equations given are the ones on the sheet given on every test. The Formal charge equation is just FC = Valence - [Lone Pairs + (1/2 Bonding Pairs)]. It would behoove you to memorize it. I noticed that there was an extra equation given in test 2 compared to test 1 so I was wondering in case...
- Tue Nov 27, 2018 9:32 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: TEST 3
- Replies: 4
- Views: 827
TEST 3
Does anyone know if the equation for the FC will be provided on test 3?
- Tue Nov 20, 2018 3:38 pm
- Forum: Student Social/Study Group
- Topic: Discussion on Wednesday
- Replies: 4
- Views: 568
Discussion on Wednesday
Hey yall does anyone have discussion with Neel on Wednesday?
Anyone know if he is cancelling discussion or not?
Anyone know if he is cancelling discussion or not?
- Wed Nov 14, 2018 11:24 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Grades
- Replies: 7
- Views: 892
Re: Grades
Raquel Rodriguez wrote:In the syllubus is says that you need 50% to get a c- or higher. Does that mean you need 250/500 points to pass the class?
my TA said 50% in the class is passing, so I believe 250 points is enough to pass the class
- Wed Nov 14, 2018 10:30 pm
- Forum: Ionic & Covalent Bonds
- Topic: Hydrogen Bond
- Replies: 7
- Views: 868
Re: Hydrogen Bond
Amy Dinh 3I wrote:Yes! A molecule can have both hydrogen bonds and covalent bond. Hydrogen bonds are INTERmolecular while covalent bonds are INTRAmolecular.
Can you tell me what the difference is between inter- and intra- ?
- Wed Nov 14, 2018 10:29 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Thanksgiving [ENDORSED]
- Replies: 14
- Views: 1604
Re: Thanksgiving [ENDORSED]
Hello, Does anyone know if we are ahead in class and won't have lecture next Wednesday? I'm trying to make travel plans :). Thanks! He's been ending lectures pretty early as well and none of the students are like slowing down the lectures by asking questions every now and then too so I honestly fee...
- Tue Nov 13, 2018 8:38 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Homework Focus 2A
- Replies: 3
- Views: 457
Homework Focus 2A
Number 5 in Focus 2A asks for electron configuration of Cu^2+. The answer is [Ar]3d^10 instead of 3d^9. Why is it so?
- Tue Nov 06, 2018 5:31 pm
- Forum: Limiting Reactant Calculations
- Topic: Reactant vs. Reagent
- Replies: 1
- Views: 491
Reactant vs. Reagent
What is the difference between a reactant and a reagent?? Are they just the same things?
- Tue Nov 06, 2018 5:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Thanksgiving Week
- Replies: 1
- Views: 282
Thanksgiving Week
Anyone know if Professor Lavelle cancels classes for Thanksgiving Break??
- Tue Nov 06, 2018 5:28 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test On Tuesday
- Replies: 10
- Views: 1073
Re: Test On Tuesday
Hi, I was wondering if chapter 1F will be included on the test on Tuesday because in class, Dr. Lavelle mentioned the test would only include information taught up to Friday's lecture, but the outline on his website shows that we should also know 1F. One of the TA also said we have to memorize the ...
- Tue Oct 23, 2018 12:46 am
- Forum: Properties of Light
- Topic: Test 2 Outline 2 Question About Electron Transition
- Replies: 1
- Views: 199
Test 2 Outline 2 Question About Electron Transition
Outline 2 says, "• With respect to electron transitions that give rise to a UV or visible spectrum: understand the difference between electronic transitions in atomic orbitals (atomic spectroscopy) and electronic transitions in molecular orbitals (molecular spectroscopy)." Can someone elab...
- Tue Oct 23, 2018 12:45 am
- Forum: Properties of Light
- Topic: Test 2 Equations
- Replies: 14
- Views: 1090
Re: Test 2 Equations
Jessica Dharmawan 1G wrote:What are the equations we should memorize for Test 2?
One of the TA said we should memorize the Lyman Series and the Balmer Series.
- Tue Oct 23, 2018 12:44 am
- Forum: Properties of Light
- Topic: Visible Light Spectrum... ?
- Replies: 6
- Views: 548
Re: Visible Light Spectrum... ?
Tyra Nguyen 3K wrote:We just need to know it for UV and visible light (I went to Lavelle's office hours and that was what he said :))
Does that mean we only have to know the frequency of the UV and visible lights?
- Tue Oct 23, 2018 12:37 am
- Forum: Administrative Questions and Class Announcements
- Topic: Test On Tuesday
- Replies: 10
- Views: 1073
Re: Test On Tuesday
Hi, I was wondering if chapter 1F will be included on the test on Tuesday because in class, Dr. Lavelle mentioned the test would only include information taught up to Friday's lecture, but the outline on his website shows that we should also know 1F. One of the TA also said we have to memorize the ...
- Thu Oct 18, 2018 7:58 pm
- Forum: Student Social/Study Group
- Topic: Class Grades
- Replies: 4
- Views: 525
Re: Class Grades
Will do!! Thank you!
- Thu Oct 18, 2018 7:55 pm
- Forum: SI Units, Unit Conversions
- Topic: How does grading for discussion posts work?
- Replies: 80
- Views: 8892
Re: How does grading for discussion posts work?
It did!!! Thank YOu!! I'm having trouble even finding a way to post in this forum. Can someone tell me where/how I can post a question? I agree I am having trouble with that too but in the upper left side with the three lines next to "Quick Links" shows a tab that you can view "your p...
- Thu Oct 18, 2018 7:53 pm
- Forum: Properties of Light
- Topic: Do I have to memorize the spectrum?
- Replies: 20
- Views: 1728
Do I have to memorize the spectrum?
Do we have to memorize the spectrum of different wavelengths and be able to identify which wavelength is which kind of radiation?
- Sun Oct 14, 2018 10:25 pm
- Forum: Student Social/Study Group
- Topic: Class Grades
- Replies: 4
- Views: 525
Class Grades
How can I figure out my grades in this class? Is it only through MyUcla?
- Wed Oct 10, 2018 4:04 pm
- Forum: SI Units, Unit Conversions
- Topic: Quiz 1- Addition to what we should know?
- Replies: 5
- Views: 618
Re: Quiz 1- Addition to what we should know?
Hannah Padilla 1H wrote:For the first test, will we need to be able to identify molecular formulas from their written name? For example in problem F3.) “Write the formula for nitric acid”
We have to be able to form a chemical equation based on the molecules that will be provided in the question!
- Tue Oct 09, 2018 11:48 pm
- Forum: General Science Questions
- Topic: Thanksgiving Week
- Replies: 8
- Views: 948
Thanksgiving Week
Does anyone know if we have class during the Thanksgiving Week?
11/19~23
11/19~23
- Tue Oct 09, 2018 3:54 pm
- Forum: General Science Questions
- Topic: First Quiz
- Replies: 1
- Views: 325
First Quiz
Does anyone know whether we will be going over the quiz/test after we turn them in?
- Tue Oct 09, 2018 3:54 pm
- Forum: General Science Questions
- Topic: First Quiz
- Replies: 1
- Views: 225
First Quiz
Does anyone know whether we will be going over the quiz/test after we turn them in?
- Sun Sep 30, 2018 1:38 pm
- Forum: General Science Questions
- Topic: First Homework
- Replies: 3
- Views: 290
First Homework
When is our first homework assignment due? During our first discussion section or the Friday of week 1?
- Sat Sep 29, 2018 11:19 pm
- Forum: SI Units, Unit Conversions
- Topic: How does grading for discussion posts work?
- Replies: 80
- Views: 8892
Re: How does grading for discussion posts work?
Does anyone know when our first homework assignment is due? Is it due on the Friday of week 1 during lecture or during our discussion in week 1? Also, I remember Professor Lavelle saying that we can "choose" our homework. Does that mean we can go through our textbook and choose the questio...
- Sat Sep 29, 2018 11:15 pm
- Forum: SI Units, Unit Conversions
- Topic: How does grading for discussion posts work?
- Replies: 80
- Views: 8892
Re: How does grading for discussion posts work?
I'm having trouble even finding a way to post in this forum. Can someone tell me where/how I can post a question? I agree I am having trouble with that too but in the upper left side with the three lines next to "Quick Links" shows a tab that you can view "your posts" I found th...
- Sat Sep 29, 2018 4:07 pm
- Forum: SI Units, Unit Conversions
- Topic: How does grading for discussion posts work?
- Replies: 80
- Views: 8892
Re: How does grading for discussion posts work?
I'm having trouble even finding a way to post in this forum. Can someone tell me where/how I can post a question?