Search found 56 matches

by AnayaArnold_3L
Sun Dec 08, 2019 9:50 pm
Forum: DeBroglie Equation
Topic: deBroglie derived
Replies: 2
Views: 25

Re: deBroglie derived

TanveerDhaliwal3G wrote:What equations/concepts is deBroglie's equation derived from?


Just remember the equation lambda = h/p, where p=m(v) and it will give the equation wavelike properties.
by AnayaArnold_3L
Sun Dec 08, 2019 9:49 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: chelating ligands [ENDORSED]
Replies: 21
Views: 1533

Re: chelating ligands [ENDORSED]

Elizabeth Harty 3A wrote:How do you know if there are sigma bonds available for rotation?


Sigma bonds can rotate,but pi bonds can't because of the p-shaped orbitals interlocking side by side.
by AnayaArnold_3L
Tue Dec 03, 2019 11:17 am
Forum: *Particle in a Box
Topic: Hydrogen Atom
Replies: 7
Views: 70

Re: Hydrogen Atom

It's usually a partial positive.
by AnayaArnold_3L
Tue Dec 03, 2019 11:13 am
Forum: Lewis Acids & Bases
Topic: Memorizing Charges of Transition Metals
Replies: 9
Views: 56

Re: Memorizing Charges of Transition Metals

Should we only memorize transition metals and their charges?
by AnayaArnold_3L
Tue Dec 03, 2019 11:13 am
Forum: Amphoteric Compounds
Topic: water
Replies: 4
Views: 19

Re: water

It all depends on what it is reacting with really, if it is in an acidic solution then it will be a base and the opposite is true if it is reacting with a basic solution
by AnayaArnold_3L
Tue Dec 03, 2019 11:11 am
Forum: Octet Exceptions
Topic: Octet exception
Replies: 13
Views: 100

Re: Octet exception

What role do octet exceptions hod when it comes to identifying polarity?
by AnayaArnold_3L
Tue Dec 03, 2019 11:08 am
Forum: Industrial Examples
Topic: What do we need to know?
Replies: 15
Views: 124

Re: What do we need to know?

I'd say know how to identify biological compounds,but also review industrial ones just to be safe.
by AnayaArnold_3L
Tue Dec 03, 2019 11:07 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Polydentates
Replies: 9
Views: 63

Re: Polydentates

How would we identify ligands?
by AnayaArnold_3L
Tue Dec 03, 2019 11:05 am
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 48
Views: 37605

Re: How to find my posts

How many post should we have by the end of the quarter?
by AnayaArnold_3L
Tue Dec 03, 2019 11:03 am
Forum: Octet Exceptions
Topic: 2.27
Replies: 7
Views: 49

Re: 2.27

radicals are only present when there is an odd number of electrons.
by AnayaArnold_3L
Tue Dec 03, 2019 11:02 am
Forum: Bond Lengths & Energies
Topic: Boiling point
Replies: 11
Views: 74

Re: Boiling point

The greater the molar mass the higher the boiling point, because there are more atoms present.
by AnayaArnold_3L
Tue Dec 03, 2019 11:01 am
Forum: Bond Lengths & Energies
Topic: Hydrogen Bonding
Replies: 9
Views: 66

Re: Hydrogen Bonding

You should also know that h-bonding only occurs when the hydrogen is directly attached to N,O,F.
by AnayaArnold_3L
Tue Dec 03, 2019 11:00 am
Forum: Bond Lengths & Energies
Topic: Boiling Point and bonds
Replies: 5
Views: 38

Re: Boiling Point and bonds

How can we guess which compound has a higher boiling point if we are only given the name?
by AnayaArnold_3L
Tue Dec 03, 2019 10:59 am
Forum: Dipole Moments
Topic: dipole moments
Replies: 6
Views: 40

Re: dipole moments

Should we only know how to identify dipole-dipole, induced dipole, and h-bonding?
by AnayaArnold_3L
Tue Dec 03, 2019 10:58 am
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Periodic Trends
Replies: 8
Views: 57

Re: Periodic Trends

Do the periodic table trends have any effect on the boiling point?
by AnayaArnold_3L
Tue Dec 03, 2019 10:57 am
Forum: Coordinate Covalent Bonds
Topic: Coordinate Covalent Bond
Replies: 8
Views: 54

Re: Coordinate Covalent Bond

They vary in the number of electrons they supply.
by AnayaArnold_3L
Tue Dec 03, 2019 10:55 am
Forum: Electronegativity
Topic: Electronegativity
Replies: 12
Views: 74

Re: Electronegativity

Does electronegativity play a role in the boiling point?
by AnayaArnold_3L
Tue Dec 03, 2019 10:55 am
Forum: Formal Charge and Oxidation Numbers
Topic: Shortcut for Formal Charge
Replies: 14
Views: 91

Re: Shortcut for Formal Charge

a quick shortcut is the just see how many atoms are surrounding whichever molecule you are trying to find the formal charge for and then subtract the valence electrons from that value.
by AnayaArnold_3L
Tue Dec 03, 2019 10:52 am
Forum: Resonance Structures
Topic: Resonance and Naming
Replies: 11
Views: 51

Re: Resonance and Naming

Should we be using the electronic or molecular geometry name?
by AnayaArnold_3L
Tue Dec 03, 2019 10:51 am
Forum: Lewis Structures
Topic: lone pairs
Replies: 7
Views: 74

Re: lone pairs

Do lone pairs automatically make a molecule nonpolar?
by AnayaArnold_3L
Tue Dec 03, 2019 10:50 am
Forum: Sigma & Pi Bonds
Topic: Sigma vs. Pi
Replies: 15
Views: 96

Re: Sigma vs. Pi

Are pi bonds weaker, because they stop the molecule from rotating and require a higher boiling point to be broken?
by AnayaArnold_3L
Tue Dec 03, 2019 10:48 am
Forum: Ionic & Covalent Bonds
Topic: intermolecular vs intramolecular
Replies: 7
Views: 54

Re: intermolecular vs intramolecular

Do we need to know how to identify intramolecular forces?
by AnayaArnold_3L
Tue Dec 03, 2019 10:46 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg equation [ENDORSED]
Replies: 73
Views: 1600

Re: Rydberg equation [ENDORSED]

How would we be able to identify if the problem requires the rydberg equation as soon as we read the problem?
by AnayaArnold_3L
Tue Dec 03, 2019 10:44 am
Forum: SI Units, Unit Conversions
Topic: midterm/final
Replies: 18
Views: 241

Re: midterm/final

It will probably be a combination of both.
by AnayaArnold_3L
Tue Dec 03, 2019 10:42 am
Forum: Naming
Topic: Memorizing
Replies: 9
Views: 51

Re: Memorizing

Should we memorize all the names or just the root words for the coordinate compounds?
by AnayaArnold_3L
Tue Nov 19, 2019 6:16 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test 2
Replies: 2
Views: 45

Test 2

Do we have to know both the Molecular and Electronic Geometry associated with the A-X-E notation?
by AnayaArnold_3L
Mon Nov 11, 2019 7:39 pm
Forum: Octet Exceptions
Topic: Limit to expanded octet
Replies: 7
Views: 76

Re: Limit to expanded octet

it usually involves the number of valence electrons available in either the d or p block.
by AnayaArnold_3L
Mon Nov 11, 2019 7:37 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg equation [ENDORSED]
Replies: 73
Views: 1600

Re: Rydberg equation [ENDORSED]

As long as you know the equations name and how to use it you should be fine!
by AnayaArnold_3L
Mon Nov 11, 2019 7:36 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Test 2
Replies: 6
Views: 59

Re: Test 2

Probably everything starting after Focus 2D on outline 2 up until outline 4
Ben 1B wrote:Does anyone know what material will be covered on test number two?
by AnayaArnold_3L
Mon Nov 11, 2019 7:34 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Wavelength Plausibility
Replies: 30
Views: 838

Re: Wavelength Plausibility

Thanks!!!!
RBergtraun_3A wrote:I had a similar question, this video helped me a lot. Hope it helps you. https://www.khanacademy.org/science/phy ... c-spectrum
by AnayaArnold_3L
Mon Nov 11, 2019 7:33 pm
Forum: Administrative Questions and Class Announcements
Topic: How to find my posts
Replies: 48
Views: 37605

Re: How to find my posts

Thank you so much!

Cindy Adiwidjaja 1E wrote:Whenever you post something, there is a box on the right side of your post that has your information on it. Next to your name, there should be a number. By clicking that number, you can see all your posts, questions and replies, and can easily access all of your old work.
by AnayaArnold_3L
Mon Nov 11, 2019 7:31 pm
Forum: General Rate Laws
Topic: Unique Reaction Rates [ENDORSED]
Replies: 32
Views: 61640

Re: Unique Reaction Rates [ENDORSED]

Thank you
Mitchell Koss 4G wrote:Combustion is also unique in that it will always have some reactants and some products that remain the same. (CO2, H2O)
by AnayaArnold_3L
Sun Nov 03, 2019 10:51 pm
Forum: Electronegativity
Topic: Measuring Electronegativity
Replies: 4
Views: 25

Re: Measuring Electronegativity

It is measurable.
Nikita Patra 3J wrote:Is electronegativity measurable, or is it just seen as relative to other atoms?
by AnayaArnold_3L
Sun Nov 03, 2019 10:49 pm
Forum: Dipole Moments
Topic: Content on the Midterm [ENDORSED]
Replies: 3
Views: 65

Re: Content on the Midterm [ENDORSED]

THANK YOU
KaleenaJezycki_4G wrote:The midterm will cover everything from the first 3 outlines. Review through 2D of the Chemical Bonds chapter, this will include Quantum and so on. Look on his website for the chapter outlines, it will really help understand what content will be covered.
by AnayaArnold_3L
Sun Nov 03, 2019 10:48 pm
Forum: Octet Exceptions
Topic: Radical
Replies: 6
Views: 37

Re: Radical

What are radicals?
by AnayaArnold_3L
Sun Nov 03, 2019 10:46 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 61
Views: 54324

Re: Tutoring? [ENDORSED]

PLF's
Samantha Silva 1F wrote:Does anyone know of outside tutoring opportunities like a peer group?
by AnayaArnold_3L
Sun Nov 03, 2019 10:45 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 2 Homework Problems [ENDORSED]
Replies: 67
Views: 1574

Re: Valence Electrons [ENDORSED]

The valence electrons are the number of electrons you have.
aphung1G wrote:How do you determine which are the valence electrons after you write out your electron configuration?
by AnayaArnold_3L
Sun Nov 03, 2019 10:44 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 2 Homework Problems [ENDORSED]
Replies: 67
Views: 1574

Re: Week 2 Homework Problems [ENDORSED]

Yes, they are!
Lauren Sanchez 3D wrote:Just to make sure, the homework problems are now due during our actual discussions right?
by AnayaArnold_3L
Sun Oct 27, 2019 10:08 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram and Ecell [ENDORSED]
Replies: 8
Views: 27681

Re: Cell Diagram and Ecell [ENDORSED]

Thanks for clarifying!!

lukezhang2C wrote:For a Galvanic Cell it should be Anode || Cathode, where there are single lines (|) separating different states of matter, and commas separating different agents with the same state of matter. i.e (aq), (aq), || (aq)| (s)
by AnayaArnold_3L
Sun Oct 27, 2019 10:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 61
Views: 54324

Re: Tutoring? [ENDORSED]

Hey! PLF's are still available and you don't always have to sin up sometimes you can just show up tot eh PLF!! Does anyone know if Peer Facilitated Learning is still available? I tried signing up through my portal, but it took me to my class planner making it seem like it was a class to put on my sc...
by AnayaArnold_3L
Sun Oct 27, 2019 10:06 pm
Forum: General Rate Laws
Topic: Unique Reaction Rates [ENDORSED]
Replies: 32
Views: 61640

Re: Unique Reaction Rates [ENDORSED]

Thank you for clarifying! I will discuss this in class tomorrow. AVERAGE RATE = (CONC(t2) − CONC(t1))/(t2 −t1) = ∆CONC/∆t INSTANTANEOUS RATE = −(d[R])/dt OR INSTANTANEOUS RATE = (d[P])/dt AVERAGE & INSTANTANEOUS RATES CAN BE DIFFERERENT FOR THE INDIVIDUAL R & P. THINK OF THEM AS THE EXPERIME...
by AnayaArnold_3L
Sun Oct 27, 2019 10:04 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student [ENDORSED]
Replies: 153
Views: 85558

Re: Advice from a Medical Student [ENDORSED]

Thank you so much!!!! Hey Chem 14A and 14B Students! I'm Ashley and I am a UCLA graduate and current NY medical student. Before medical school, I was Dr. Lavelle's UA for 10 quarters, which means I know how to do well and effectively study for this class. I wanted to give you some advice and things ...
by AnayaArnold_3L
Sun Oct 20, 2019 8:23 pm
Forum: Trends in The Periodic Table
Topic: Study Buddies?
Replies: 8
Views: 70

Study Buddies?

Hey guys!!

I just made this post to ask if anyone wanted to be study buddies? Especially since the Midterm is coming up in a matter of weeks :)

(Just reply to this post with your email or something you don't mind sharing)
by AnayaArnold_3L
Sun Oct 20, 2019 8:22 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration Exceptions
Replies: 5
Views: 34

Re: Electron Configuration Exceptions

saigorijavolu33J wrote:these exceptions exist because a half-full or completely full d sub-level is more stable than the partially full one.


Can you break this down a bit further I'm having trouble understanding what you meant?
by AnayaArnold_3L
Sun Oct 20, 2019 8:21 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Wavelength Plausibility
Replies: 30
Views: 838

Re: Wavelength Plausibility

Thank you so much!
by AnayaArnold_3L
Sun Oct 20, 2019 8:19 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg equation [ENDORSED]
Replies: 73
Views: 1600

Re: Rydberg equation [ENDORSED]

KHowe_1B wrote:What exactly is the Rydberg equation and how do you know when to use it?


From what I can tell you will mostly use it whenever frequency is involved in the problem.
by AnayaArnold_3L
Sun Oct 20, 2019 8:17 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 168
Views: 102469

Re: Rusty on High School Chem [ENDORSED]

Just to add on-- Crash Course on Youtube is great for conceptual chemistry and overarching themes, and really helps with understanding the "greater picture" when it comes to some concepts. If you are looking for more step-by-step instruction with worked out examples, I'd highly recommend ...
by AnayaArnold_3L
Sun Oct 20, 2019 8:15 pm
Forum: Administrative Questions and Class Announcements
Topic: Accessing the E-textbook [ENDORSED]
Replies: 20
Views: 785

Re: Accessing the E-textbook [ENDORSED]

I know that a few students bought the e-textbook instead of the regular textbook. I'm interested in buying that one instead but I don't know which bundle on the Macmillan Learning student store includes the e-textbook. Do all of them include the e-textbook or only specific bundles? Loose-Leaf Versi...
by AnayaArnold_3L
Sun Oct 20, 2019 8:14 pm
Forum: Properties of Light
Topic: Week 3 Homework
Replies: 9
Views: 63

Re: Week 3 Homework

Lauren Lewis3L wrote:Does anyone know if we are allowed to do the quantum homework problems for this week's homework or are we moving on to the next section? I remember lavelle saying that we are finishing quantum on Monday.


We can still do the Quantum World homework problems.
by AnayaArnold_3L
Sun Oct 06, 2019 6:14 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg equation [ENDORSED]
Replies: 73
Views: 1600

Re: Rydberg equation [ENDORSED]

KHowe_1B wrote:What exactly is the Rydberg equation and how do you know when to use it?


You usually use igt in place of a constant when trying to calculate wavelength or frequency!
by AnayaArnold_3L
Sun Oct 06, 2019 6:13 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty in Speed [ENDORSED]
Replies: 18
Views: 869

Re: Uncertainty in Speed [ENDORSED]

The hydrogen atom has a radius of approximately 0.05 nm. Assume that we know the position of an electron to an accuracy of 1% of the hydrogen radius, calculate the uncertainty in the speed of the electron using the Heisenberg uncertainty principle. So the correct answer is Delta V >= 10^8 m/s. How ...
by AnayaArnold_3L
Sun Oct 06, 2019 6:06 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student [ENDORSED]
Replies: 153
Views: 85558

Re: Advice from a Medical Student [ENDORSED]

Hey Chem 14A and 14B Students! I'm Ashley and I am a UCLA graduate and current NY medical student. Before medical school, I was Dr. Lavelle's UA for 10 quarters, which means I know how to do well and effectively study for this class. I wanted to give you some advice and things I wish I knew when I ...
by AnayaArnold_3L
Sun Oct 06, 2019 6:00 pm
Forum: SI Units, Unit Conversions
Topic: Test 1
Replies: 5
Views: 104

Re: Test 1

Guzman_1J wrote:What topics will the first test be covering?


Be sure to memorize the units as well!
by AnayaArnold_3L
Sun Oct 06, 2019 5:59 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 2 Homework Problems [ENDORSED]
Replies: 67
Views: 1574

Re: Week 2 Homework Problems [ENDORSED]

Thanks! I was sort of confused, so we’re allowed to solve problems from both fundamentals and quantum list. Hey, we are allowed to solve problems for both or just one or the other it all depends on if you feel as though you need more practice with the high school review module for the test next wee...
by AnayaArnold_3L
Sun Sep 29, 2019 6:54 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 61
Views: 54324

Re: Tutoring? [ENDORSED]

BELTRAMI_4I Does anyone know of any good tutors for the first quarter of 2019 for Chem 14A? Hey! I 've found a few good tutors for the Fall Quarter of Chem 14A on the Chemistry and Biochemistry website where they post a list of tutors for the current quarter and they also update it every quarter! He...

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