Search found 21 matches

by kaitlindaugherty3L
Fri Dec 08, 2017 4:22 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 4
Replies: 3
Views: 305

Test 4

I wanted to know who I could go to or email concerning problems with Test 4. I found that there were a couple of problems with my test, and I am not sure who I should tell about these. I talked to my TA, but I don't think that they understood my concern. The problems I had were as follows: For the q...
by kaitlindaugherty3L
Wed Nov 29, 2017 8:40 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Monodentate vs Bidentate etc. [ENDORSED]
Replies: 7
Views: 1694

Monodentate vs Bidentate etc. [ENDORSED]

How do you tell if something is monodentate, bidentate, or some other form of dentate? I asked one of the UA's and they said that we should memorize which ones are bidentate, and other forms cause the others will just be monodenate. However, I cannot find the information on which ligands are which d...
by kaitlindaugherty3L
Wed Nov 29, 2017 6:38 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Problem 11.45
Replies: 1
Views: 155

Problem 11.45

Can someone explain problem 11.45? I set up an equation to solve for Cl but I can"t seem to get the right answer.
by kaitlindaugherty3L
Wed Nov 29, 2017 6:38 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Problem 11.45
Replies: 1
Views: 159

Problem 11.45

Can someone explain problem 11.45? I set up an equation to solve for Cl but I can"t seem to get the right answer.
by kaitlindaugherty3L
Wed Nov 29, 2017 6:33 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Problem 11.49 [ENDORSED]
Replies: 1
Views: 124

Problem 11.49 [ENDORSED]

Can someone explain how to do problem 11.49 from the homework? I set up an ice box, but I am not sure that I did it correctly, cause I did not get the correct answer.
by kaitlindaugherty3L
Sat Nov 25, 2017 5:57 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: K constant
Replies: 5
Views: 389

Re: K constant

The brackets mean that it is the concentration (mol x L-1) or the Kc for the reaction. The parenthesis with the P means that the K is in partial pressure (either barr or atm).
by kaitlindaugherty3L
Sat Nov 25, 2017 5:55 pm
Forum: Hybridization
Topic: HW 4.95
Replies: 1
Views: 159

Re: HW 4.95

So the total structure of CH2CHCHO has 22 electrons, if you put everything in with one bond and a double bond where you are told to, then you get 16 electrons (cause each bond counts as 2 electrons and a double bond has 2 bonds so 4 total electrons). The only element without a full valence at this p...
by kaitlindaugherty3L
Thu Nov 16, 2017 1:35 pm
Forum: Hybridization
Topic: Significance of Hybridization
Replies: 3
Views: 202

Re: Significance of Hybridization

Hybridization is important because accommodates for the shape of the molecule after promotion. When promotion occurs and the electrons are moved into higher energy orbitals, the resulting structure usually does not match the shape of the molecule. In order to make the resulting structure match the s...
by kaitlindaugherty3L
Thu Nov 16, 2017 1:12 pm
Forum: Dipole Moments
Topic: Dipole Moments
Replies: 2
Views: 172

Re: Dipole Moments

This is the equation that would be used to calculate a dipole moment μ⃗ =∑iqir⃗. If you have a two charge system, like a diatomic molecule then you can use μdiatomic=Q×r. However, we do not have to know these equations. So, if you are asking about calculating dipoles like we do in the homework probl...
by kaitlindaugherty3L
Thu Nov 16, 2017 12:53 pm
Forum: Hybridization
Topic: Hybridization vs. Standard Electron Configuration
Replies: 1
Views: 122

Re: Hybridization vs. Standard Electron Configuration

In order for hybridization to occur, you need to be able to have promotion. According to the textbook, "promotion of an electron is possible if the overall change, taking account of all contributions to the energy and especially the greater number of bonds that can thereby be formed, is towards...
by kaitlindaugherty3L
Wed Nov 08, 2017 11:55 am
Forum: Ionic & Covalent Bonds
Topic: Homework 3.39
Replies: 3
Views: 197

Re: Homework 3.39

For this test he is going to give us the formula with the names, so you don't need to know it for now. However, in order to figure this out, you would need to a) know what all the prefixes and suffixes mean for the naming part and b) you would need to know the charges from the periodic table (or jus...
by kaitlindaugherty3L
Tue Nov 07, 2017 10:24 pm
Forum: Lewis Structures
Topic: Homework 3.33 C
Replies: 2
Views: 190

Re: Homework 3.33 C

N is an exception to the ionization energy rule because it has 3 electrons in its p orbital, which is one for each subshell. Therefore, O is more likely to lose an e- because it wants to be like N, since N has a lower ground state energy because it has one electron in each subshell. This exception i...
by kaitlindaugherty3L
Tue Nov 07, 2017 10:20 pm
Forum: Ionic & Covalent Bonds
Topic: 3.25
Replies: 3
Views: 207

Re: 3.25

You get the charge for some of them based on the numbers in parentheses next to them (ie Indium(III) is a +3 charge). The other numbers you need to figure out using the periodic table. Group 1 has a +1 charge, Group 2 has a +2 charge, transition metals vary in charge and have to be given to you, Gro...
by kaitlindaugherty3L
Thu Oct 26, 2017 6:49 pm
Forum: Quantum Numbers and The H-Atom
Topic: Problem 2.29 parts, b and c
Replies: 2
Views: 186

Problem 2.29 parts, b and c

For parts b and c in problem number 2.29, how would you determine the l value for the orbital? I understand that you would get the n value from the number in front of the orbital s, d, p or f, but once you get that, you get multiple possibilities for l from that number. How do you determine which on...
by kaitlindaugherty3L
Thu Oct 26, 2017 5:51 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: ch1 question 43
Replies: 8
Views: 601

Re: ch1 question 43

So even though this is a homework question, we don't have to know how to do problems involving Schrodinger's equation for the upcoming test or for the midterm, correct? Or do we need to know the equation for one or the other/ both?
by kaitlindaugherty3L
Thu Oct 19, 2017 3:41 pm
Forum: *Black Body Radiation
Topic: Black body for quiz 2 [ENDORSED]
Replies: 11
Views: 832

Re: Black body for quiz 2 [ENDORSED]

According to what Dr. LaVelle said in class, all we need to know for black body radiation is that atoms and molecules usually only absorb or emit unique frequencies that are allowed by their unique electron structure, but black bodies (hypothetically) absorb or emit all frequencies.
by kaitlindaugherty3L
Thu Oct 12, 2017 8:59 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect
Replies: 8
Views: 377

Re: Photoelectric Effect

So in the atomic spectra experiment, electrons are never ejected? They only move to different levels, or is there a scenario where electrons can be ejected in the atomic spectra experiment?
by kaitlindaugherty3L
Thu Oct 12, 2017 8:50 pm
Forum: Photoelectric Effect
Topic: Energy in kj or j when solving a problem?
Replies: 10
Views: 601

Re: Energy in kj or j when solving a problem?

So should we put the answer in Joules even if the problem gives us the units in Kilojoules?
by kaitlindaugherty3L
Fri Oct 06, 2017 2:10 pm
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 116
Views: 10629

Re: All students read this sig fig post [ENDORSED]

Are we suppose to round to sig figs at every step of the problem? In response to a question in my lecture (lecture 3) Dr. Lavelle said to only round to sig figs at the end of the problem.
by kaitlindaugherty3L
Mon Oct 02, 2017 10:05 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: E.29 part D
Replies: 1
Views: 175

E.29 part D

Can someone help me figure out how to do part D in problem 29? I tried doing it as a ratio with 16.00 / 206.53 = x / 8.61, but I got an answer that was different from the textbook and I am not sure what else I should try.

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