Search found 36 matches

by Debora Fernandez Clemente_ 4H
Fri Nov 15, 2019 10:28 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 Topics
Replies: 11
Views: 47

Re: Test Topics

There really is not a week to week schedule to follow, its better to look at the syllabus and study any material after 2D for the test, so basically anything after the midterm. This excludes hybridization
by Debora Fernandez Clemente_ 4H
Fri Nov 15, 2019 10:25 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: Intermolecular forces
Replies: 10
Views: 56

Re: Intermolecular forces

can anyone explain why professor Lavelle preferred to London dispersion force to be called Induced Dipole- Induced Dipole?
by Debora Fernandez Clemente_ 4H
Fri Nov 15, 2019 10:22 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 Topics
Replies: 11
Views: 47

Re: Test Topics

Victor James 4I wrote:VSPR info as in bond angles and the names of the formation?


yes I believe that is correct!
by Debora Fernandez Clemente_ 4H
Fri Nov 15, 2019 10:17 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: How to tell polar or non polar from lewis structure?
Replies: 9
Views: 30

Re: How to tell polar or non polar from lewis structure?

Are going to have to determine on whether a molecule is polar or not?
by Debora Fernandez Clemente_ 4H
Fri Nov 15, 2019 10:16 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: test 2
Replies: 13
Views: 54

Re: test 2

What are other topics other than the VSEPR models we should know for test two? or is only that?
by Debora Fernandez Clemente_ 4H
Sun Nov 10, 2019 9:56 pm
Forum: Bond Lengths & Energies
Topic: Test 2 Topics
Replies: 40
Views: 221

Re: Test 2 Topics

what was the last topic we covered for the midterm?
by Debora Fernandez Clemente_ 4H
Sun Nov 10, 2019 9:54 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: How to Draw Dipole Arrows
Replies: 8
Views: 25

Re: How to Draw Dipole Arrows

If the dipole moments always point toward the more electronegative atom is this why the arrow drawn from positive to negative?
by Debora Fernandez Clemente_ 4H
Sun Nov 10, 2019 9:51 pm
Forum: Bond Lengths & Energies
Topic: how to determine the energy of a bond
Replies: 6
Views: 28

Re: how to determine the energy of a bond

I am confused by what formal energy is? is that formal charge?
by Debora Fernandez Clemente_ 4H
Sun Nov 10, 2019 11:22 am
Forum: Sigma & Pi Bonds
Topic: Triple bond?
Replies: 18
Views: 465

Re: Triple bond?

Does this also apply for bonding in DNA?
by Debora Fernandez Clemente_ 4H
Sun Nov 03, 2019 1:03 am
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizable vs Polarizing
Replies: 6
Views: 36

Re: Polarizable vs Polarizing

I am still unsure of what covalent character means, can anyone explain?
by Debora Fernandez Clemente_ 4H
Sun Nov 03, 2019 1:58 am
Forum: Formal Charge and Oxidation Numbers
Topic: When to calculate formal charge
Replies: 7
Views: 35

Re: When to calculate formal charge

When determining the most stable structure do you choose the Lewis structure with the least formal charges on each atom?
by Debora Fernandez Clemente_ 4H
Sun Nov 03, 2019 1:55 am
Forum: Lewis Structures
Topic: Midterm Topics
Replies: 8
Views: 33

Re: Midterm Topics

I believe the midterm is up everything up to section 2.D
by Debora Fernandez Clemente_ 4H
Sun Nov 03, 2019 1:52 am
Forum: Coordinate Covalent Bonds
Topic: Coordinate covalent bond?
Replies: 12
Views: 396

Re: Coordinate covalent bond?

I know understand what a coordinate covalent bond is but, how did you know what compound was a base or an acid?
by Debora Fernandez Clemente_ 4H
Sun Nov 03, 2019 1:47 am
Forum: Resonance Structures
Topic: Resonance structure
Replies: 4
Views: 22

Re: Resonance structure

how do you figure out how many resonance structures you should have for a compound?
by Debora Fernandez Clemente_ 4H
Sun Nov 03, 2019 1:45 am
Forum: Lewis Structures
Topic: BF3
Replies: 3
Views: 24

Re: BF3

In order to fin the Lewis structure of BF3 we need to know the valence electron of both Boron and Fluorine which is 3 and 7 valence electrons respectively (you can figure this out by using the periodic table). With this we know that all three F has only one unpaired electron which will bong with the...
by Debora Fernandez Clemente_ 4H
Fri Oct 25, 2019 12:29 am
Forum: Student Social/Study Group
Topic: Midterm
Replies: 17
Views: 131

Re: Midterm

Also does anyone know if Lavelle has posted any possible dates for the midterm review session?
by Debora Fernandez Clemente_ 4H
Fri Oct 25, 2019 12:27 am
Forum: Ionic & Covalent Bonds
Topic: Electron Affinity
Replies: 5
Views: 38

Re: Electron Affinity

Why does electron affinity increase as we go towards the noble gasses?
by Debora Fernandez Clemente_ 4H
Fri Oct 25, 2019 12:18 am
Forum: Bond Lengths & Energies
Topic: Bond lengths
Replies: 15
Views: 110

Re: Bond lengths

would the bond length vary when it is a double or triple bond?
by Debora Fernandez Clemente_ 4H
Fri Oct 25, 2019 12:16 am
Forum: Octet Exceptions
Topic: Electron Configurations
Replies: 3
Views: 52

Re: Electron Configurations

why is the electronic configuration of Ag [Kr] 5s^1 4d^10 instead of [Kr] 5s^2 4d^9?
by Debora Fernandez Clemente_ 4H
Thu Oct 24, 2019 11:09 pm
Forum: Resonance Structures
Topic: Bond Lengths
Replies: 3
Views: 265

Re: Bond Lengths

When we are asked to draw resonance structures are we supposed to calculate the average bond length?
by Debora Fernandez Clemente_ 4H
Sun Oct 20, 2019 6:22 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Nodal planes
Replies: 3
Views: 6

Re: Nodal planes

They are regions around atomic nuclei where the likelihood of finding electrons is zero.
by Debora Fernandez Clemente_ 4H
Sun Oct 20, 2019 6:07 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration Exceptions
Replies: 5
Views: 24

Re: Electron Configuration Exceptions

What is the partial full one you are referring to in these exceptions?
by Debora Fernandez Clemente_ 4H
Thu Oct 17, 2019 12:42 pm
Forum: DeBroglie Equation
Topic: De Broglie's Equation
Replies: 17
Views: 76

Re: De Broglie's Equation

What is the difference between λ=h/p and c= λ*ν
by Debora Fernandez Clemente_ 4H
Thu Oct 17, 2019 12:36 pm
Forum: Properties of Light
Topic: Rydberg's Equation [ENDORSED]
Replies: 4
Views: 23

Re: Rydberg's Equation [ENDORSED]

Can someone explain why Lavelle preferred us to us this equation, (E = -hR/n^2), instead of Rydbergs equation?
by Debora Fernandez Clemente_ 4H
Thu Oct 17, 2019 12:33 pm
Forum: DeBroglie Equation
Topic: Constant Question
Replies: 7
Views: 37

Re: Constant Question

Usually just use the constant they give in the equation sheet, which I believe is usually 6.626*10^-34 J*s. Rounding up sometimes can eventually lead your answer to be slightly off from the real answer, so it is better to be more precise with your constants.
by Debora Fernandez Clemente_ 4H
Sat Oct 12, 2019 11:24 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019901

Re: Post All Chemistry Jokes Here

Have you heard the one about a chemist who was reading a book about helium?

He just couldn’t put it down!
by Debora Fernandez Clemente_ 4H
Sat Oct 12, 2019 11:10 pm
Forum: DeBroglie Equation
Topic: De Broglie's Equation
Replies: 13
Views: 67

Re: De Broglie's Equation

Can someone explain the difference between the De Broglie's and Heisenberg's equation?
by Debora Fernandez Clemente_ 4H
Sat Oct 12, 2019 11:02 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect and Photons
Replies: 6
Views: 33

Re: Photoelectric Effect and Photons

A photon is a basic unit of light, when it hits a metal and meets the threshold, an electron will be emitted.
by Debora Fernandez Clemente_ 4H
Sat Oct 12, 2019 9:52 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019901

Re: Post All Chemistry Jokes Here

Enjoy!

Oxygen, hydrogen, sulfur, sodium, and phosphorous walk into a bar.

“OH SNaP!” says the bartender.
by Debora Fernandez Clemente_ 4H
Sat Oct 12, 2019 9:38 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 1891

Re: Test 1 [ENDORSED]

Does anyone know when we will be getting the first test back?
by Debora Fernandez Clemente_ 4H
Thu Oct 03, 2019 11:54 pm
Forum: Properties of Light
Topic: Spectroscopy
Replies: 4
Views: 28

Re: Spectroscopy

How can we figure out what type of light has a shorter/longer frequency? Is there a chart or acronym for this?
by Debora Fernandez Clemente_ 4H
Thu Oct 03, 2019 11:44 pm
Forum: Significant Figures
Topic: When to round for sig figs?
Replies: 12
Views: 78

Re: When to round for sig figs?

I undertand we have to round till the end so that we get more accurate numbers but, if there multiple parts to a problem, for example where you have to find moles, mass, etc, in the same problem, should i just write down exact numbers?
by Debora Fernandez Clemente_ 4H
Wed Oct 02, 2019 3:39 pm
Forum: Properties of Light
Topic: Angstrom Unit [ENDORSED]
Replies: 2
Views: 39

Angstrom Unit [ENDORSED]

Can someone explain what was the significance of the Angstrom unit from lecture?
by Debora Fernandez Clemente_ 4H
Wed Oct 02, 2019 3:23 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Moles
Replies: 5
Views: 36

Re: Moles

First you would have to convert 25.2 kg to grams, and then convert grams to moles.
Second use stoichiometry to find the amount of moles multiplied by 6 which will tell you the amount of F ions


25.2 kg * 1000g/1 kg* 1 mol UF6/Molar Mass UF6 * 6 mol F- ions/1 mol UF6
by Debora Fernandez Clemente_ 4H
Wed Oct 02, 2019 3:14 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Balancing Equations [ENDORSED]
Replies: 25
Views: 380

Re: Balancing Equations [ENDORSED]

When balancing equations how do you determine what to balance first?

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