Search found 51 matches
- Sun Dec 13, 2020 1:38 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: chelating ligands [ENDORSED]
- Replies: 51
- Views: 96786
Re: chelating ligands [ENDORSED]
Then to clarify, a ring is what is a chelate? and that forms when it's a ligand-spare atom-spare atom-same ligand?
- Sun Dec 13, 2020 1:31 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Recognizing ligand binding sites
- Replies: 5
- Views: 421
Recognizing ligand binding sites
Hi! how can we tell how many sites a ligand will bond to (for example the difference between a monodentate and a bidentate?) And how much will we need to know for this final exam?
- Sat Dec 12, 2020 11:43 pm
- Forum: Trends in The Periodic Table
- Topic: O versus N Ionization Energy
- Replies: 9
- Views: 502
O versus N Ionization Energy
What's the reasoning again for Oxygen having a lower ionization energy than Nitrogen?
- Sat Dec 12, 2020 10:44 pm
- Forum: Limiting Reactant Calculations
- Topic: Dino Nuggets Question 3
- Replies: 3
- Views: 357
Re: Dino Nuggets Question 3
I'm having a little trouble figuring out what the limiting reactant would be
- Sat Dec 12, 2020 6:57 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Acids (& Bases) naming conventions
- Replies: 4
- Views: 328
Re: Acids (& Bases) naming conventions
Okay thanks so much!
- Sat Dec 12, 2020 4:41 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Acids (& Bases) naming conventions
- Replies: 4
- Views: 328
Acids (& Bases) naming conventions
Should we know anything about how acids are named?
- Sun Dec 06, 2020 10:56 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Grade
- Replies: 9
- Views: 650
Re: Final Grade
Honestly it could take longer than a week. Depends on the prof, but I've def been in classes where it took longer than a week to know our final grade lol.
- Sun Dec 06, 2020 4:19 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Lectures not loading
- Replies: 13
- Views: 691
Re: Lectures not loading
If it was just a today problem, CCLE and MyUCLA servers have been wonky today. But if it's something that is occurs often, I would contact the IT office if possible.
- Sun Dec 06, 2020 4:16 pm
- Forum: Naming
- Topic: Naming on the Final
- Replies: 4
- Views: 190
Naming on the Final
How much of naming compounds should we know for the final and how are you guys studying for that section? (i.e. do we need to memorize stuff)
- Sun Dec 06, 2020 4:13 pm
- Forum: Naming
- Topic: Sapling Q1
- Replies: 20
- Views: 898
Re: Sapling Q1
Not totally related, but for some of those having a problem with answering on sapling, also make sure you don't put spaces. I had tetra-ammine dichloro copper (III) chloride and they didn't take it until I changed it to tetraamminedichloro copper (III) chloride.
- Sun Dec 06, 2020 12:34 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization Energy of Group 13
- Replies: 3
- Views: 483
Re: Ionization Energy of Group 13
Hi! One of the UA worksheets (I believe Riya's Week 5 worksheet) explains that the ionization enthalpy of Ga is higher than Al because the 3d-subshell is unable to completely shield the valence electrons. This also applies to Ti having a higher ionization enthalpy than In (ineffective shielding of ...
- Sun Nov 29, 2020 9:09 pm
- Forum: Student Social/Study Group
- Topic: Studying for Final Exam
- Replies: 57
- Views: 2439
Re: Studying for Final Exam
Most likely just textbook problems and UA sessions again.
- Sun Nov 29, 2020 9:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sapling #20
- Replies: 6
- Views: 411
Re: Sapling #20
Figure out how many valence electrons there would be.
As is the center atom and the oxygen atoms should center around it. It should be pretty easily deducible from there.
As is the center atom and the oxygen atoms should center around it. It should be pretty easily deducible from there.
- Sun Nov 29, 2020 9:00 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sapling HW #17
- Replies: 7
- Views: 365
Re: Sapling HW #17
Echoing what the person above me said, just think about the different bonds you can use between carbons and also whether you can make it a ring structure.
- Sun Nov 29, 2020 8:57 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polar
- Replies: 10
- Views: 548
Re: Polar
Think about the electronegativity difference between atoms and whether these polar dipoles will cancel each other out.
- Sun Nov 29, 2020 8:56 pm
- Forum: Hybridization
- Topic: Confused on hybridization conceptually
- Replies: 9
- Views: 590
Re: Confused on hybridization conceptually
Oh okay thanks!
- Sun Nov 29, 2020 8:56 pm
- Forum: Lewis Structures
- Topic: Acids and Bases
- Replies: 1
- Views: 156
Re: Acids and Bases
I usually like to think of it by looking at the Lewis structures. If there are lone pairs, then they tend to be bases since those lone pairs will often contribute to a bond between that ion and another ion. On the other hand, if an ion doesn't have a full octet (for example, if it has a central Boro...
- Sat Nov 28, 2020 11:34 pm
- Forum: Hybridization
- Topic: Confused on hybridization conceptually
- Replies: 9
- Views: 590
Confused on hybridization conceptually
Hi! I understand how to get the hybridization of a given atom through counting bonds and lone pairs etc but can someone kind of explain the concept of hybridization a little bit more to me since I still don't quite understand how it works.
- Sun Nov 22, 2020 10:18 pm
- Forum: Student Social/Study Group
- Topic: Final Jitters
- Replies: 457
- Views: 334347
Re: Final Jitters
While studying, don't be afraid to take breaks. If you overload too much, it can cause mental strain. Additionally, during the exam itself don't think about how fast or slow you're going as that can also stress you out.
- Sun Nov 22, 2020 10:11 pm
- Forum: Student Social/Study Group
- Topic: Study Tips for Final Exam
- Replies: 57
- Views: 2507
Re: Study Tips for Final Exam
Do you guys recommend reading through the textbook too, or just doing the problems? I haven't really been reading the textbook to prepare for the midterms, but I was wondering if others find that helpful as well? I usually just skim the textbook because it's a helpful review of the lectures. Ah I s...
- Sun Nov 22, 2020 11:54 am
- Forum: Student Social/Study Group
- Topic: Study Tips for Final Exam
- Replies: 57
- Views: 2507
Re: Study Tips for Final Exam
Do you guys recommend reading through the textbook too, or just doing the problems? I haven't really been reading the textbook to prepare for the midterms, but I was wondering if others find that helpful as well?
- Sun Nov 22, 2020 11:52 am
- Forum: Administrative Questions and Class Announcements
- Topic: Week 7 Sapling
- Replies: 12
- Views: 687
Re: Week 7 Sapling
There is technically a Sapling assignment for every week's material, but it's not necessarily due every week. As other replies have mentioned above, the Week 7 and Week 8 material have a sapling assignment that will be due next Sunday!
- Wed Nov 18, 2020 2:06 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization Energy of Group 13
- Replies: 3
- Views: 483
Ionization Energy of Group 13
Hi! One of the UA worksheets (I believe Riya's Week 5 worksheet) explains that the ionization enthalpy of Ga is higher than Al because the 3d-subshell is unable to completely shield the valence electrons. This also applies to Ti having a higher ionization enthalpy than In (ineffective shielding of e...
- Wed Nov 18, 2020 2:01 pm
- Forum: Trends in The Periodic Table
- Topic: Oxygen Exception Ionization Energy
- Replies: 12
- Views: 696
Re: Oxygen Exception Ionization Energy
What about the elements below Oxygen also in Group 16, such as Sulfur? Wouldn't they also encounter a similar situation?
- Tue Nov 17, 2020 9:05 pm
- Forum: Student Social/Study Group
- Topic: Midterm 2
- Replies: 19
- Views: 933
Midterm 2
Hi! I was just wondering how yall were studying for this exam/what you thought helped the most for your first midterm? I've attended a couple UA sessions and I didn't have too much trouble with the Sapling but yea I would love to hear what else you guys did.
- Tue Nov 17, 2020 2:46 pm
- Forum: Dipole Moments
- Topic: Sapling #13
- Replies: 9
- Views: 525
Re: Sapling #13
Adding onto this, I ended up figuring this out, but I'm still confused about the exact number, I counted the atoms most likely to form a Hydrogen bond but that number was less than the number I ended up getting. The exact amount is 8 I'm pretty sure. For each hydrogen atoms, the oxygen in a water m...
- Sun Nov 15, 2020 7:07 pm
- Forum: Dipole Moments
- Topic: Sapling #13
- Replies: 9
- Views: 525
Re: Sapling #13
Adding onto this, I ended up figuring this out, but I'm still confused about the exact number, I counted the atoms most likely to form a Hydrogen bond but that number was less than the number I ended up getting.
- Sun Nov 15, 2020 7:03 pm
- Forum: Resonance Structures
- Topic: Resonance
- Replies: 19
- Views: 673
Re: Resonance
I think also a good way to think about it is as if the energy from all the electrons are distributed between more atoms, which lowers the energy magnitude of the entire molecule. it's also important to remember that resonance structures represent a singular molecule.
- Sun Nov 15, 2020 6:54 pm
- Forum: Trends in The Periodic Table
- Topic: Trends in Periodic Table Tips
- Replies: 12
- Views: 692
Re: Trends in Periodic Table Tips
Ok thanks so much!
- Sun Nov 15, 2020 3:04 pm
- Forum: Resonance Structures
- Topic: Resonance Structures Clarification
- Replies: 8
- Views: 333
Resonance Structures Clarification
Hi so I know that resonance occurs when you can place electrons in different locations (i.e the double bond can go anywhere), but does this imply that every structure with this characteristic has a hybrid/partial bond?
- Sun Nov 15, 2020 2:50 pm
- Forum: Trends in The Periodic Table
- Topic: Trends in Periodic Table Tips
- Replies: 12
- Views: 692
Trends in Periodic Table Tips
I was just wondering if anyone had a way to better memorize/understand the trends in the periodic table? I always end up confusing myself.
- Sun Nov 15, 2020 2:47 pm
- Forum: Lewis Structures
- Topic: breaking the octet rule
- Replies: 4
- Views: 281
Re: breaking the octet rule
Wait I thought the expanded octets were only for certain elements, not anything past the 2nd row?
- Sun Nov 08, 2020 1:27 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: F orbitals?
- Replies: 21
- Views: 712
Re: F orbitals?
I'm pretty sure he's specified before that we should only worry up to the d orbitals.
- Sun Nov 08, 2020 1:25 am
- Forum: Quantum Numbers and The H-Atom
- Topic: order of electron cnfiguration
- Replies: 13
- Views: 507
Re: order of electron cnfiguration
Thanks everyone!
- Tue Nov 03, 2020 8:29 pm
- Forum: Properties of Light
- Topic: Number of photons
- Replies: 3
- Views: 239
Re: Number of photons
okay thank you!
- Tue Nov 03, 2020 8:29 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: order of electron cnfiguration
- Replies: 13
- Views: 507
order of electron cnfiguration
can someone explain why 4s and 3d sometimes are flipped in order?
- Mon Nov 02, 2020 12:00 am
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm grades
- Replies: 19
- Views: 803
Re: Midterm grades
Hopefully soon but probably not until end of this week
- Sun Nov 01, 2020 11:59 pm
- Forum: Properties of Light
- Topic: Number of photons
- Replies: 3
- Views: 239
Number of photons
If you're given a wavelength and energy required to absorb the radiation, how can you tell how many photons you need?
- Sun Oct 25, 2020 9:58 pm
- Forum: Properties of Electrons
- Topic: Schrodinger's wave equation
- Replies: 4
- Views: 233
Re: Schrodinger's wave equation
I might be wrong, but I believe that schrodinger's more or less tells us which orbital an electron is located in. I don't know if a comparison can really be made between it and the lewis dot diagram which just gives us a representation of an atom's valence electrons.
- Sun Oct 25, 2020 9:46 pm
- Forum: Properties of Light
- Topic: Speed of light
- Replies: 25
- Views: 759
Re: Speed of light
Regardless of the precise constant you use, the test is multiple choice, therefore your answer should be close enough to one of the options given.
- Sun Oct 25, 2020 9:42 pm
- Forum: Properties of Light
- Topic: How does an atom continuously emit light?
- Replies: 4
- Views: 289
Re: How does an atom continuously emit light?
I believe that the light/color you see when you shine light on an object is actually a separate process from the photoelectric effect and has more to do with how our eyes interpret light; the object isn't necessarily continuously emitting light. Hope that makes sense!
- Sun Oct 18, 2020 4:41 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Exams
- Replies: 12
- Views: 521
Re: Exams
Oooh okay thanks guys!Also I believe that there won't be partial credit since everything seems to be multiple choice.
- Sun Oct 18, 2020 12:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Exams
- Replies: 12
- Views: 521
Exams
Hi would we be allowed to use an ipad/tablet to do work our work when completing the exam? Or is it preferred for us to use paper and pen?
- Sun Oct 18, 2020 12:33 pm
- Forum: Photoelectric Effect
- Topic: Question about Short Wavelengths vs. Long Wavelengths
- Replies: 6
- Views: 387
Re: Question about Short Wavelengths vs. Long Wavelengths
So is the shorter the wavelength -> the higher the frequency-> the higher the energy? Or am I misunderstanding ?
- Sun Oct 18, 2020 12:24 pm
- Forum: Student Social/Study Group
- Topic: How are you studying?
- Replies: 204
- Views: 17511
Re: How are you studying?
Wow, there are definitely a lot of good ideas here. Personally, I find that practice problems always help me the most (this goes for every stem subject I've been in). I've actually never been to a step-up session but will def consider going at some point. But yes, 100% practice.
- Thu Oct 15, 2020 12:03 pm
- Forum: Properties of Light
- Topic: Intensity v Energy
- Replies: 18
- Views: 556
Intensity v Energy
Can someone explain the difference between the intensity of light and its energy? I'm not sure I understand it completely.
- Thu Oct 15, 2020 10:38 am
- Forum: Student Social/Study Group
- Topic: Sophomores in Lavelle Chem14A Lecture 3
- Replies: 6
- Views: 352
Re: Sophomores in Lavelle Chem14A Lecture 3
Hey Kiana! I'm also a second year in Lecture 3:)
- Thu Oct 15, 2020 10:36 am
- Forum: Student Social/Study Group
- Topic: iPad vs Paper notes
- Replies: 32
- Views: 7549
Re: iPad vs Paper notes
I definitely think using an ipad had made organization a lot easier, and since I personally use notability, I'm able to back it up to drive immediately (I'm not sure about other apps). TBH this has been easier for me especially if some classes have premade note templates or slides, so I can just dow...
- Sun Oct 11, 2020 2:00 pm
- Forum: Empirical & Molecular Formulas
- Topic: How to go from molecular formula to empirical formula
- Replies: 4
- Views: 141
Re: How to go from molecular formula to empirical formula
The empirical formula should just be the simplified version of the molecular formula. The ratio of each element should stay the same so essentially you would be reducing the formula to the lowest whole number integers if that makes sense. For example, C4H8O4 would be reduced to CH2O.
- Sun Oct 11, 2020 1:58 pm
- Forum: Student Social/Study Group
- Topic: Forming Virtual Study Group
- Replies: 31
- Views: 1055
Re: Forming Virtual Study Group
Hi I'd love to be apart of this group!
- Sat Oct 10, 2020 4:53 pm
- Forum: Limiting Reactant Calculations
- Topic: Last Question on the Sapling Hw (Week 1)?
- Replies: 12
- Views: 483
Re: Last Question on the Sapling Hw (Week 1)?
So, just to clarify, we don't have to do anything with the given structures? Is the only way to solve this problem through searching up the molar mass?