Search found 52 matches
- Mon Dec 09, 2019 1:37 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: chelating ligands [ENDORSED]
- Replies: 51
- Views: 98891
Re: chelating ligands [ENDORSED]
Is this a topic that will be relevant in 14B?
- Mon Dec 09, 2019 1:36 am
- Forum: Trends in The Periodic Table
- Topic: Ionization
- Replies: 5
- Views: 655
Re: Ionization
Which principle is this based off of?
- Sat Dec 07, 2019 4:19 pm
- Forum: Administrative Questions and Class Announcements
- Topic: MARSHMALLOW- FINAL REVIEW SESSION [ENDORSED]
- Replies: 115
- Views: 13300
Re: MARSHMALLOW- FINAL REVIEW SESSION [ENDORSED]
Annie Chantasirivisal_4I wrote:Hey guys, he just posted marshmallow answers rn. posting in case anyone has it bookmarked/subscribed.
Thank you!
- Sat Dec 07, 2019 3:28 pm
- Forum: Administrative Questions and Class Announcements
- Topic: MARSHMALLOW- FINAL REVIEW SESSION [ENDORSED]
- Replies: 115
- Views: 13300
Re: MARSHMALLOW- FINAL REVIEW SESSION [ENDORSED]
Hannah Romano 4D wrote:when are the answers for marshmallows being posted???
I'd also love to know!
- Sun Dec 01, 2019 3:32 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Acids
- Replies: 13
- Views: 1589
Re: Acids
ahuang wrote:A good list to know is this list of 7 strong acids: HCl, HBr, HI, H2SO4, HNO3, HClO3, HClO4
Also know that generally molecules with COOH are weak acids.
is H2SO4 different from the others because it has two Hydrogens?
- Sun Dec 01, 2019 3:29 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Carboxylic Acids
- Replies: 5
- Views: 514
Re: Carboxylic Acids
How much of this will we need to know for the final?
- Sun Dec 01, 2019 3:28 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Final Exam
- Replies: 10
- Views: 717
Re: Final Exam
Good to know, thanks guys!
- Sun Dec 01, 2019 3:27 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Strong vs Weak Acids
- Replies: 7
- Views: 542
Re: Strong vs Weak Acids
Is this a complete binary or is there some continuity?
- Sun Dec 01, 2019 3:26 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH Scale is broken?
- Replies: 6
- Views: 551
Re: pH Scale is broken?
Are there any examples we should know of that fall outside the 0-14 range?
- Sun Nov 24, 2019 9:23 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: chelating complexes
- Replies: 2
- Views: 262
Re: chelating complexes
Can anything that’s polydentate be chelating?
- Sun Nov 24, 2019 9:22 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination Numbers
- Replies: 4
- Views: 337
Re: Coordination Numbers
Does a tm have a coordination number before being part of the complex?
- Sun Nov 24, 2019 9:21 pm
- Forum: Naming
- Topic: polydentate?
- Replies: 7
- Views: 481
Re: polydentate?
Thanks guys! I had this question too
- Thu Nov 21, 2019 11:52 pm
- Forum: Hybridization
- Topic: HW 2.57
- Replies: 2
- Views: 236
Re: HW 2.57
Serena Siddiq 3D wrote:The hybridization should be for the second carbon, not the nitrogen. So, the hybridization is sp since there are 2 regions of electron density around the carbon.
Oh ok so then is the Nitrogen not hybridized?
- Thu Nov 21, 2019 11:32 pm
- Forum: Hybridization
- Topic: HW 2.57
- Replies: 2
- Views: 236
HW 2.57
In problem 2.57 which asks about Acetonitrile (CH3CN) (there's no solution in the solutions manual), what is the hybridization on the right carbon and the nitrogen on the end? In general, what is the hybridization on a nitrogen with 3 bonds and a lone pair?
- Sun Nov 17, 2019 6:40 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: single, double, and triple bonds
- Replies: 6
- Views: 468
Re: single, double, and triple bonds
Will double and triple bonds repel any more than the single bonds (enough to change the angles at all)?
- Sun Nov 17, 2019 6:36 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Prediction of Angles
- Replies: 4
- Views: 299
Re: Prediction of Angles
Are we meant to just memorize the angles for the shapes we've learned?
- Sun Nov 17, 2019 6:34 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3660068
Re: Post All Chemistry Jokes Here
Wish I'd seen this one when we were still doing quantum...
- Sun Nov 17, 2019 6:30 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3660068
Re: Post All Chemistry Jokes Here
Why did the attacking army use acid?
To neutralize the enemy’s base.
To neutralize the enemy’s base.
- Sun Nov 17, 2019 6:29 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3660068
Re: Post All Chemistry Jokes Here
What kind of fish is salty?
2 Na!
2 Na!
- Sun Nov 10, 2019 10:49 pm
- Forum: Octet Exceptions
- Topic: Limit to expanded octet
- Replies: 7
- Views: 802
Re: Limit to expanded octet
What if the element also has the f-orbital available to it?
- Sun Nov 10, 2019 10:44 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: polarizability and polarizing power
- Replies: 4
- Views: 315
Re: polarizability and polarizing power
Are they linearly inversely related?
- Sun Nov 10, 2019 10:42 pm
- Forum: Dipole Moments
- Topic: Hydrogen Bonding
- Replies: 6
- Views: 442
Re: Hydrogen Bonding
Could a bond between something lower down in the same group as H form an intramolecular bond stronger than a hydrogen-bond? B/c of lower electronegativity?
- Tue Nov 05, 2019 11:22 pm
- Forum: Lewis Structures
- Topic: Common polyatomic ions
- Replies: 2
- Views: 302
Re: Common polyatomic ions
Thank you, that chart is super helpful!
- Tue Nov 05, 2019 10:38 pm
- Forum: Lewis Structures
- Topic: Common polyatomic ions
- Replies: 2
- Views: 302
Common polyatomic ions
For which common polyatomic ions will we have to know the formula (and vice versa) on the midterm? Will they all be given?
- Sun Nov 03, 2019 4:39 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: What are the octet exceptions?
- Replies: 11
- Views: 534
Re: What are the octet exceptions?
n = 3 energy levels, or elements after P, have access to an empty d-orbital. Because of this accessible d-orbital, the elements are exceptions to the octet rule. Elements in group 13 (column with B, Al, etc.) are also exceptions with 3 pairs of e-, rather than an octet. Why are these group 13 eleme...
- Sun Nov 03, 2019 4:38 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Degenerate orbitals
- Replies: 4
- Views: 285
Re: Degenerate orbitals
Is this something we need to know for the midterm? I don't seem to remember it having been mentioned in lecture...
- Sun Nov 03, 2019 4:37 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Coulombic potential energy
- Replies: 3
- Views: 830
Re: Coulombic potential energy
Is this something we need to know for the midterm?
- Sun Nov 03, 2019 4:36 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Exceptions in electronic configurations?
- Replies: 3
- Views: 264
Re: Exceptions in electronic configurations?
Are these the only exceptions we need to know?
- Sun Nov 03, 2019 4:35 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: paul and hundd rules
- Replies: 4
- Views: 293
Re: paul and hundd rules
Is the Aufbau principle also called the "building up" principle? How would I use it in context?
- Sun Oct 27, 2019 11:45 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Finding Most Stable Structure
- Replies: 9
- Views: 309
Re: Finding Most Stable Structure
How do we know when we're dealing with the most stable version? Are naturally occurring molecules always the most stable versions of themselves?
- Sun Oct 27, 2019 11:43 pm
- Forum: Octet Exceptions
- Topic: Determining Exceptions
- Replies: 3
- Views: 268
Re: Determining Exceptions
Thank you guys for explaining this, it's so helpful!
- Sun Oct 27, 2019 11:42 pm
- Forum: Octet Exceptions
- Topic: 8 valence electrons
- Replies: 3
- Views: 218
Re: 8 valence electrons
Dr. Lavelle mentioned the octet guideline only being applicable to a certain array of atoms...what are these atoms? Is it ones without d-orbitals?
- Sun Oct 27, 2019 11:41 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Expanded Valence Shells
- Replies: 5
- Views: 227
Re: Expanded Valence Shells
Could they hypothetically have so many bonds that this d orbital is filled?
- Sun Oct 27, 2019 11:39 pm
- Forum: Student Social/Study Group
- Topic: Ionization Energy vs. e- Affinity
- Replies: 3
- Views: 314
Re: Ionization Energy vs. e- Affinity
Is there any relationship between whether something is a metal and its e- affinity?
- Sun Oct 27, 2019 11:37 pm
- Forum: Octet Exceptions
- Topic: Reasoning behind the exceptions
- Replies: 3
- Views: 160
Re: Reasoning behind the exceptions
Are there any electrons in these 3d orbitals? Or do they just exist because the third energy state exists?
- Sun Oct 20, 2019 11:25 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: electron spin
- Replies: 4
- Views: 241
Re: electron spin
How much conceptual knowledge of electron spin will we need for the midterm in this class?
- Sun Oct 20, 2019 11:24 pm
- Forum: DeBroglie Equation
- Topic: Photon Equation
- Replies: 4
- Views: 240
Re: Photon Equation
My TA also said that this is a big topic of debate and controversy in the field, so if you/we don't understand it, I think we'll be fine at least for this course!
- Sun Oct 20, 2019 3:30 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Heisengberg Uncertainty Equation Meaning
- Replies: 7
- Views: 368
Re: Heisengberg Uncertainty Equation Meaning
Are there any textbook practice problems that you guys would recommend in particular for these concepts?
- Sun Oct 20, 2019 3:28 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Advice for studying
- Replies: 92
- Views: 7763
Re: Advice for studying
Do you guys know if there's anywhere that Dr. Lavelle lists the exact stuff he's gonna go over in lecture? I like to read the textbook sections beforehand but I always end up reading stuff that he doesn't end up expecting us to know, and I just get confused. Thanks!
- Sun Oct 20, 2019 11:20 am
- Forum: *Particle in a Box
- Topic: Particle in A box
- Replies: 8
- Views: 979
Re: Particle in A box
Can the particle in a box experiment be compared to the physics of acoustics and sound waves within a chamber/tube?
- Sun Oct 20, 2019 11:16 am
- Forum: Administrative Questions and Class Announcements
- Topic: How to find my posts
- Replies: 163
- Views: 169468
Re: How to find my posts
This is great to know, thank you guys!
- Fri Oct 11, 2019 10:56 pm
- Forum: Trends in The Periodic Table
- Topic: Element Names
- Replies: 8
- Views: 1036
Re: Element Names
Is that periodic table color-coded with the types of elements like how it is in the front of our textbook?
- Fri Oct 11, 2019 10:55 pm
- Forum: Properties of Light
- Topic: Relationship between lambda and nu
- Replies: 5
- Views: 1175
Re: Relationship between lambda and nu
How does the speed of light change when not in a vacuum?
- Fri Oct 11, 2019 10:53 pm
- Forum: Properties of Light
- Topic: Wavelength
- Replies: 4
- Views: 198
Re: Wavelength
Is it possible for interference to be both constructive and destructive (at different times) with the two waves staying the same?
- Fri Oct 11, 2019 10:52 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3660068
Re: Post All Chemistry Jokes Here
A neutron walked into a bar and asked how much for a drink. The bartender replied, "for you, no charge."
- Fri Oct 11, 2019 10:51 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3660068
Re: Post All Chemistry Jokes Here
The noble gases walk into a bar. No one reacts.
- Mon Oct 07, 2019 7:35 pm
- Forum: Empirical & Molecular Formulas
- Topic: Polyatomic Ions/Naming Compounds
- Replies: 6
- Views: 660
Re: Polyatomic Ions/Naming Compounds
Do we have to know this stuff for the first test?
- Fri Oct 04, 2019 1:06 am
- Forum: SI Units, Unit Conversions
- Topic: Etext Access for Chem Book
- Replies: 3
- Views: 186
Re: Etext Access for Chem Book
Ashley Fang 3J wrote:Hmm I'm not sure about your extext access issue in particular but if you want there's also a free pdf version you could download
https://drive.google.com/file/d/1QBq9rF ... p=drivesdk
Thanks a million! This is super helpful.
- Fri Oct 04, 2019 1:05 am
- Forum: Significant Figures
- Topic: All students read this sig fig post [ENDORSED]
- Replies: 170
- Views: 35288
Re: All students read this sig fig post [ENDORSED]
How do you deal with significant figures when you have exact values (e.g., exactly 1:2 ratio of molecules in a reaction)? Do we treat the exact value as having infinite sig figs?
- Fri Oct 04, 2019 12:59 am
- Forum: Ionic & Covalent Bonds
- Topic: Ionic vs Covalent
- Replies: 32
- Views: 43773
Re: Ionic vs Covalent
405335722 wrote:covalent network are the strongest (ex. diamond and graphite) are stronger than ionic however covalent bonds themselves are usually weaker than ionic bonds.
How much of knowledge like this will be required for the final in this class?
- Wed Oct 02, 2019 11:57 pm
- Forum: SI Units, Unit Conversions
- Topic: Diagnostic test for chem 17 vs 14A
- Replies: 5
- Views: 403
Re: Diagnostic test for chem 17 vs 14A
Alright, thank you! Excuse me while I try to go re-learn all of high school chemistry.
- Wed Oct 02, 2019 11:03 pm
- Forum: SI Units, Unit Conversions
- Topic: Diagnostic test for chem 17 vs 14A
- Replies: 5
- Views: 403
Diagnostic test for chem 17 vs 14A
Hi all! I just took the diagnostic test Dr. Lavelle sent out to see whether I'm more suited to the Chem 14A class in which I'm currently enrolled or perhaps Chem 17 because I'm VERY rusty on high school chem. But, all it said when I finished it under "Overall Feedback" was "This compl...