Search found 17 matches
- Mon Nov 18, 2019 6:10 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Shape and Structure
- Replies: 1
- Views: 176
Molecular Shape and Structure
Which homework problems for section 2F cover the different intermolecular forces and sigma and pi bonds? A lot of them are about hybridization, but that's not going to be in the test.
- Mon Nov 18, 2019 5:47 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Intermolecular Forces
- Replies: 2
- Views: 251
Intermolecular Forces
Which intermolecular forces are we expected to know exactly for the test? On Lavelle's "Molecular Shape and Structure" overview sheet, it is said that we have to know H-bonding, dipole-dipole and dispersion.
- Sat Nov 16, 2019 8:57 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test #2
- Replies: 4
- Views: 332
Re: Test #2
Will Lavelle be covering sigma and pi bonds on Monday?
- Sat Nov 16, 2019 8:49 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test #2
- Replies: 4
- Views: 332
Test #2
I'm aware that Lavelle mentioned in class that test 2 will cover material not on the midterm up to Friday. However, which topics exactly will be on the test?
- Sat Nov 16, 2019 2:35 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Using Dipole moments to determine if a molecule is polar or non polar
- Replies: 2
- Views: 201
Using Dipole moments to determine if a molecule is polar or non polar
Problem 2E.29 asks which of the three isomers of dichlorobenzene, C6H4Cl2, are polar. Can anyone explain to me how they went about solving this problem? How do you determine which isomer is polar?
- Fri Nov 15, 2019 11:18 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Determining if a molecule is polar or non polar
- Replies: 9
- Views: 949
Determining if a molecule is polar or non polar
When determining if a molecule is polar or non polar on the test, is it expected of us to know the electronegativity values of the elements in the given molecules?
- Fri Nov 15, 2019 9:40 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: How to study for VSEPR?
- Replies: 9
- Views: 729
Re: How to study for VSEPR?
https://www.google.com/imgres?imgurl=https%3A%2F%2Fd2jmvrsizmvf4x.cloudfront.net%2FkIvBaJQ6Q4qL5PDMygrt_main-qimg-48559dab899b4a80bce6c154f5d5db80&imgrefurl=https%3A%2F%2Fsocratic.org%2Fquestions%2Fwhat-is-the-molecular-geometry-of-h2o-draw-its-vsepr-and-lewis-structure&docid=MWmdtbQsJ-0-HM&...
- Sun Jul 07, 2019 11:59 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Atomic Orbitals [ENDORSED]
- Replies: 5
- Views: 886
Re: Atomic Orbitals [ENDORSED]
To answer the initial question, I think we need to understand how the spherical polar coordinates constitute the form of an atomic orbital.
- Sun Jul 07, 2019 11:47 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Atomic Orbitals [ENDORSED]
- Replies: 5
- Views: 886
Re: Atomic Orbitals [ENDORSED]
This image could help with visualizing the spherical polar coordinates (not from the textbook): https://www.google.com/imgres?imgurl=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F4%2F4f%2F3D_Spherical.svg%2F1200px-3D_Spherical.svg.png&imgrefurl=https%3A%2F%2Fen.wikipedia.org...
- Sun Jul 07, 2019 11:40 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Atomic Orbitals [ENDORSED]
- Replies: 5
- Views: 886
Re: Atomic Orbitals [ENDORSED]
Well, spherical polar coordinates are needed to write down the form of an atomic orbital and to specify the location of each point around the nucleus. Each point is labeled with three coordinates (r, theta, phi).
- Sun Jul 07, 2019 11:30 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Wave Function
- Replies: 2
- Views: 471
Re: Wave Function
In addition, the density of a cloud centered on the nucleus at each point represents the probability of finding an electron there. The densest regions of the cloud represent locations where the electron is most likely to be found.
- Sun Jul 07, 2019 11:22 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Wave Function
- Replies: 2
- Views: 471
Re: Wave Function
A wave function is a mathematical description of the probability of a particle's quantum state as a function of r (the distance from the nucleus), theta (angle from the positive z axis), and phi (the angle about the z axis). Hence, the square of a wave function tells us the probability density of an...
- Sun Jul 07, 2019 11:05 pm
- Forum: SI Units, Unit Conversions
- Topic: Quantum Mechanics
- Replies: 1
- Views: 467
Quantum Mechanics
What is the probability density and why is it represented as Ψ2 ("wave function squared")?
- Sun Jun 30, 2019 7:29 pm
- Forum: SI Units, Unit Conversions
- Topic: Calculating amount of molecules
- Replies: 3
- Views: 993
Re: Calculating amount of molecules
There most likely was a typo in the textbook question
- Thu Jun 27, 2019 10:43 pm
- Forum: SI Units, Unit Conversions
- Topic: Limiting Reactants
- Replies: 5
- Views: 728
Limiting Reactants
Will professor Lavelle expect us to know the formula for, say, calcium hydroxide and ethyne in limiting reactant problems?
- Thu Jun 27, 2019 12:58 pm
- Forum: SI Units, Unit Conversions
- Topic: Calculating amount of molecules
- Replies: 3
- Views: 993
Calculating amount of molecules
Can anybody explain how they went about solving the following problem?: Calculate the amount of urea molecules, OC(NH2)2, in 2.3 x 10^5g of urea, which is used in facial creams and, on a bigger scale, as an agricultural fertilizer. The correct answer is 3.8 x 10^3, but I keep getting a different num...
- Wed Jun 26, 2019 4:00 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Balancing Equations [ENDORSED]
- Replies: 25
- Views: 2095
Re: Balancing Equations [ENDORSED]
You most likely would be deducted points since stoichiometric coefficients must be the lowest whole number