Search found 17 matches

by Blanca Cervantes
Mon Nov 18, 2019 6:10 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shape and Structure
Replies: 1
Views: 18

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.
by Blanca Cervantes
Mon Nov 18, 2019 5:47 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Intermolecular Forces
Replies: 2
Views: 30

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.
by Blanca Cervantes
Sat Nov 16, 2019 8:57 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test #2
Replies: 4
Views: 34

Re: Test #2

Will Lavelle be covering sigma and pi bonds on Monday?
by Blanca Cervantes
Sat Nov 16, 2019 8:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Test #2
Replies: 4
Views: 34

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?
by Blanca Cervantes
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: 25

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?
by Blanca Cervantes
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: 51

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?
by Blanca Cervantes
Fri Nov 15, 2019 9:40 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: How to study for VSEPR?
Replies: 9
Views: 84

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&...
by Blanca Cervantes
Sun Jul 07, 2019 11:59 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Atomic Orbitals [ENDORSED]
Replies: 5
Views: 348

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.
by Blanca Cervantes
Sun Jul 07, 2019 11:47 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Atomic Orbitals [ENDORSED]
Replies: 5
Views: 348

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...
by Blanca Cervantes
Sun Jul 07, 2019 11:40 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Atomic Orbitals [ENDORSED]
Replies: 5
Views: 348

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).
by Blanca Cervantes
Sun Jul 07, 2019 11:30 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Wave Function
Replies: 2
Views: 205

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.
by Blanca Cervantes
Sun Jul 07, 2019 11:22 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Wave Function
Replies: 2
Views: 205

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...
by Blanca Cervantes
Sun Jul 07, 2019 11:05 pm
Forum: SI Units, Unit Conversions
Topic: Quantum Mechanics
Replies: 1
Views: 240

Quantum Mechanics

What is the probability density and why is it represented as Ψ2 ("wave function squared")?
by Blanca Cervantes
Sun Jun 30, 2019 7:29 pm
Forum: SI Units, Unit Conversions
Topic: Calculating amount of molecules
Replies: 3
Views: 268

Re: Calculating amount of molecules

There most likely was a typo in the textbook question
by Blanca Cervantes
Thu Jun 27, 2019 10:43 pm
Forum: SI Units, Unit Conversions
Topic: Limiting Reactants
Replies: 5
Views: 272

Limiting Reactants

Will professor Lavelle expect us to know the formula for, say, calcium hydroxide and ethyne in limiting reactant problems?
by Blanca Cervantes
Thu Jun 27, 2019 12:58 pm
Forum: SI Units, Unit Conversions
Topic: Calculating amount of molecules
Replies: 3
Views: 268

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...
by Blanca Cervantes
Wed Jun 26, 2019 4:00 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Balancing Equations [ENDORSED]
Replies: 25
Views: 482

Re: Balancing Equations [ENDORSED]

You most likely would be deducted points since stoichiometric coefficients must be the lowest whole number

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