Search found 35 matches

by Simran Athwal-Dis 3A
Sat Dec 08, 2018 5:00 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Test 2 outline
Replies: 4
Views: 63

Re: Test 2 outline

Ashita Tanwar 3H wrote:No, electron configurations are Week 4 material, so they should be on the midterm/final and following test. We do need to know the wave function numbers though (n,l,m) and orbitals etc. Hope this helps!


Sorry for replying so late, I just wanted to say thank you so much. And, yes, it did help!
by Simran Athwal-Dis 3A
Sat Dec 08, 2018 4:58 pm
Forum: Student Social/Study Group
Topic: Structure of the final
Replies: 4
Views: 39

Re: Structure of the final

Hello there, this question is nothing about the structure of the final. I wanted to know when naming a structure, is there another way to name it besides just memorizing the names?
by Simran Athwal-Dis 3A
Sat Dec 08, 2018 4:45 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 186
Views: 39195

Re: Saying Thank You to Dr. Lavelle

Thank you Dr. Lavelle for being a supportive and caring professor. I enjoyed your lectures everyday because you made them interesting. I also appreciate how much time you put in to create study sessions for your students such as workshops, drop-in, step-up sessions, modules, etc. Thank you so much a...
by Simran Athwal-Dis 3A
Sat Dec 08, 2018 4:27 pm
Forum: Naming
Topic: Naming Coordination Compounds
Replies: 9
Views: 85

Re: Naming Coordination Compounds

Adding on to the roman numeral question, the roman numeral indicates the charge of the transition metal cation and its used in situations where there are multiple oxidation states that the metal can form and so it helps distinguish the state of the metal. You can generally find it by looking at the...
by Simran Athwal-Dis 3A
Sat Dec 08, 2018 4:21 pm
Forum: Student Social/Study Group
Topic: Structure of the final
Replies: 4
Views: 39

Re: Structure of the final

Hey there, I believe there will be eight questions, but each question will have parts to it. For example, question 1 will have a-d, parts involved.
by Simran Athwal-Dis 3A
Sat Dec 08, 2018 3:55 pm
Forum: Naming
Topic: Naming Coordination Compounds
Replies: 9
Views: 85

Re: Naming Coordination Compounds

Chan Mee Lee wrote:The roman numeral is used to state the oxidation state of the transition metal. It can be figured out by using all the other charges in the coordination compound since you know the total charge for a coordination compound has to be neutral (=0)

Thank you so much!
by Simran Athwal-Dis 3A
Wed Nov 28, 2018 9:47 pm
Forum: Naming
Topic: Naming Coordination Compounds
Replies: 9
Views: 85

Re: Naming Coordination Compounds

When does the roman numeral come into play, basically how do you determine what roman numeral to place on a compound?
by Simran Athwal-Dis 3A
Wed Nov 28, 2018 9:42 pm
Forum: Sigma & Pi Bonds
Topic: Sigma vs. Pi
Replies: 8
Views: 91

Re: Sigma vs. Pi

Is it true that for every double bond, there is one pi bond and for every triple bond, there are 2 pi bonds?
by Simran Athwal-Dis 3A
Wed Nov 28, 2018 9:38 pm
Forum: Sigma & Pi Bonds
Topic: Sigma vs. Pi
Replies: 8
Views: 91

Re: Sigma vs. Pi

Hello there, how do you find out how many sigma and pi bonds are in a molecule?
by Simran Athwal-Dis 3A
Sun Nov 18, 2018 9:17 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Determining the Shape of a Molecule

Hey there, how can you know the shape of a molecule by just drawing the Lewis structure? I mean, Dr. Lavelle did mention that you could just indicate which shape it is and not draw it out, but how do you know?
by Simran Athwal-Dis 3A
Sun Nov 18, 2018 9:09 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Hey there, how can you determine the least amount of repulsion for a molecule after drawing the Lewis structure?
by Simran Athwal-Dis 3A
Sun Nov 18, 2018 9:07 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Determining the Shape of a Molecule

Hey there, can someone explain how to draw Lewis structures as polyatomic species?
by Simran Athwal-Dis 3A
Sun Nov 18, 2018 9:05 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Determining the Shape of a Molecule

Hey there, when determining the shape of a molecule, do we have to draw the Lewis structure in a certain way ?
by Simran Athwal-Dis 3A
Sun Nov 18, 2018 9:02 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Re: Quantum numbers for the "exception" cases

Hey there, can someone explain why copper has an electron configuration that is [Ar] 3d10 4s1 instead of [Ar] 3d9 4s2 and same goes for chromium.
by Simran Athwal-Dis 3A
Sun Nov 04, 2018 4:56 pm
Forum: Lewis Acids & Bases
Topic: Lewis Acids and Bases on Midterm
Replies: 4
Views: 80

Re: Lewis Acids and Bases on Midterm

Hello there, how would you know if a Lewis Structure is more acidic or more basic? How do you figure that out?
by Simran Athwal-Dis 3A
Mon Oct 29, 2018 9:50 pm
Forum: Administrative Questions and Class Announcements
Topic: Exam
Replies: 7
Views: 162

General Questions

Hi, does anyone have lecture notes for Friday, 10/26/18? I couldn't attend because I was in the hospital, so I was hoping someone had lecture notes. If not, could someone tell me what was discussed? Also, I heard from some current 3rd year students that took Chem14A that if you did extra chem proble...
by Simran Athwal-Dis 3A
Mon Oct 29, 2018 9:20 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Quantum #s? [ENDORSED]

Hello, I had a quick question. One of the quantum numbers, the one where you have to determine if it is +1/2 or -1/2. How do you figure out if it is +1/2 or -1/2 from only the periodic table? I know how to find the n, l, and ml, but not that specific one. May anyone help to explain?
by Simran Athwal-Dis 3A
Mon Oct 29, 2018 9:11 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Valence Electrons?

Hello, I had a quick question about figuring out valence electrons. I know that you can figure how many valence electrons there are for each element by electron configurations or just simply figuring out where the element is located in the column. But, for the transition metals, how do you imply the...
by Simran Athwal-Dis 3A
Mon Oct 29, 2018 9:06 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Re: Understanding a textbook problem

Te Jung Yang 1G wrote:
For the particle and textbook problem, you just simply apply De Broglie's equation: wavelength = h / (mass * velocity). You see that as mass goes up, the wavelength falls as h and velocity are constants.


Thank You! I understand it now.
by Simran Athwal-Dis 3A
Wed Oct 24, 2018 3:35 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Understanding a textbook problem

Hey there, there was a problem that I didn't understand the concept behind. A particle (6.644 * 10^-34 kg) and textbook (2.18 kg) travel the same speed. Which will have a smaller wavelength? I know it is the textbook, but what is the concept behind it? Is it that the larger the mass, the smaller the...
by Simran Athwal-Dis 3A
Wed Oct 24, 2018 3:29 pm
Forum: Quantum Numbers and The H-Atom
Topic: Quantum numbers for the "exception" cases
Replies: 15
Views: 162

Re: Quantum numbers for the "exception" cases

Hey there, how do you calculate the frequency of light emitted? I know the equation, but how do I apply it? Is it only utilized when hydrogen atoms are available?
by Simran Athwal-Dis 3A
Wed Oct 24, 2018 3:11 pm
Forum: Quantum Numbers and The H-Atom
Topic: Which electrons have most energy?
Replies: 3
Views: 37

Re: Excited States vs. Ground States

Hey there, I wanted to know how can I differentiate between excited states of an atom and ground states of an atom?
by Simran Athwal-Dis 3A
Wed Oct 24, 2018 3:07 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Test 2 outline
Replies: 4
Views: 63

Re: Test 2 outline

Hey there, are electron configurations on quiz 2?
by Simran Athwal-Dis 3A
Wed Oct 24, 2018 3:03 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: Solution Concentration [ENDORSED]

AriaSoeprono4I wrote:[quote=In a problem that involves M1V1=M2V2 you must first identify which you are trying to solve for. If you are solving for final molarity, you know that the molarity the problem gives is the initial molarity. Of the two volumes, the one that comes first is usually the initial volume. If it does not state explicitly what the final volume is, you usually add the amount of water "added" to the solution to the initial volume to get the final volume.


Thank you so much!
by Simran Athwal-Dis 3A
Sat Oct 13, 2018 10:01 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: formula units [ENDORSED]

Hello! May someone explain more how e- structure give rise to light? Also, during my lecture I had on Oct. 10th, Dr. Lavelle went over an example using the formula: Wavelength= hc/E He included the following: (6.626 * 10^-34 Js)(3.00 * 10^8 m/s)/3.61 *10^19 J) Where did he get his numerator is what ...
by Simran Athwal-Dis 3A
Sat Oct 13, 2018 9:47 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: Solution Concentration [ENDORSED]

These things are stated in the problem, whether it is explicit or implicit. It helps to identify what the numbers mean in the given problem, and record them accordingly as you read. There should only be one of these answers missing, in which you would manipulate the equation M[initial]*V[initial]=M...
by Simran Athwal-Dis 3A
Sat Oct 13, 2018 9:44 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: Re: [ENDORSED]

lukezhang wrote:I think theres an option in profile which shows your posts!

Thank You!
by Simran Athwal-Dis 3A
Thu Oct 11, 2018 10:17 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: Rounding Up [ENDORSED]

Sapna Ramappa 3G wrote:We can calculate everything with the atomic masses given on the periodic table, and then we can round after we consider significant figures at the end of the problem! This will allow us to have more accurate results. :)


Thank you so much!
by Simran Athwal-Dis 3A
Thu Oct 11, 2018 10:16 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: Rounding Up [ENDORSED]

Daniel Bowen 3I wrote:
Simran Athwal-Dis 3A wrote:Hello! I had a question regarding atomic masses. Do we round the atomic masses on the periodic table or leave them as is?


I would leave them as is and you can round using significant figures at the end of the problem



Thank You!
by Simran Athwal-Dis 3A
Thu Oct 11, 2018 10:14 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: Solution Concentration [ENDORSED]

How do you know which is the initial molarity, initial volume, final molarity, and/or final volume from a given problem? How do you figure it out? These things are stated in the problem, whether it is explicit or implicit. It helps to identify what the numbers mean in the given problem, and record ...
by Simran Athwal-Dis 3A
Thu Oct 11, 2018 10:10 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Hi, I had a quick question. How do we check how many times we posted on Chemistry Community? Do we go on our profile?
by Simran Athwal-Dis 3A
Thu Oct 04, 2018 9:33 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Solution Concentration [ENDORSED]

How do you know which is the initial molarity, initial volume, final molarity, and/or final volume from a given problem? How do you figure it out?
by Simran Athwal-Dis 3A
Thu Oct 04, 2018 9:19 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Re: Rounding Up [ENDORSED]

Thank you for the feedback!
by Simran Athwal-Dis 3A
Thu Oct 04, 2018 5:16 pm
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20018

Rounding Up [ENDORSED]

Hello! I had a question regarding atomic masses. Do we round the atomic masses on the periodic table or leave them as is?

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