Search found 105 matches
- Sat Mar 14, 2020 7:21 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Reaction Profile
- Replies: 2
- Views: 282
Reaction Profile
For 14g on Endgame, does the size of dip for the intermediate matter?
- Sat Mar 14, 2020 7:18 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Endgame 15b
- Replies: 5
- Views: 381
Re: Endgame 15b
I think the k' is supposed to signify the combination of the first rate constant and the concentration of A
- Sat Mar 14, 2020 12:47 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Endgame Review Sheet
- Replies: 1
- Views: 306
Endgame Review Sheet
For 5 on the endgame review sheet, the answer key adds the two standard potential values. I thought we couldn't do that because standard potential isn't a state function. Can we only do it in certain cases?
- Thu Mar 12, 2020 10:53 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 2
- Views: 196
Final
How is the final going to be administered and formatted? Is it going to be all multiple choice and what is going to be the time limit? Is it going to be in a locked browser/ filmed? Where are we going to turn it in to?
- Tue Mar 10, 2020 6:44 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: 7E.3
- Replies: 1
- Views: 212
7E.3
Can someone explain the reasoning behind how the solutions manual does 7E.3 and why it is completely different from example 7E.1 even though it is the same type of problem.
- Tue Mar 10, 2020 6:42 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: 7D.5
- Replies: 3
- Views: 290
7D.5
I keep getting a different answer from the answer key for 7D.5. The solutions manual subtracts 0.59 from the right side and I don't understand the reasoning behind this.
- Sun Mar 08, 2020 11:28 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Study Advice
- Replies: 73
- Views: 6765
Re: Study Advice
I personally go to Lyndon's Workshop on Mondays from 6-8 and Kate's Step-Up/Workshop on Thursdays from 6-8. They're really thorough and good at explaining confusing concepts.
- Sun Mar 08, 2020 11:24 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Activation Energy vs. Free energy of activation
- Replies: 2
- Views: 241
Activation Energy vs. Free energy of activation
What is the difference between activation energy and free energy of activation?
- Sun Mar 08, 2020 11:21 pm
- Forum: Zero Order Reactions
- Topic: Calculus
- Replies: 10
- Views: 691
Calculus
To what extent are we going to need to know calculus?
- Sun Mar 08, 2020 11:18 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Kinetics v Therodynamics
- Replies: 8
- Views: 539
Kinetics v Therodynamics
How does understanding a reaction kinetically differ from understanding it thermodynamically?
- Sun Mar 08, 2020 10:47 pm
- Forum: First Order Reactions
- Topic: Derivation of Integrated Rate Laws
- Replies: 1
- Views: 155
Derivation of Integrated Rate Laws
Do we need to know how to derive any of the integrated rate laws or half-lives?
- Sun Mar 01, 2020 6:38 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Dissolved Metal
- Replies: 3
- Views: 313
Dissolved Metal
How would we be able to predict if a metal will dissolve in a solution?
- Sun Mar 01, 2020 6:36 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Concentration Cell Examples
- Replies: 3
- Views: 249
Concentration Cell Examples
What is an example of a concentration cell?
- Sun Mar 01, 2020 6:34 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Biological Examples [ENDORSED]
- Replies: 1
- Views: 414
Biological Examples [ENDORSED]
Which biological examples should we know regarding electrochemistry?
- Sun Mar 01, 2020 6:32 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagram Comma vs Line
- Replies: 5
- Views: 300
Cell Diagram Comma vs Line
When do you put a comma instead of a line in a cell diagram?
- Sun Mar 01, 2020 6:31 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Emf [ENDORSED]
- Replies: 1
- Views: 382
Emf [ENDORSED]
What is electromotive force and why does it represent the maximum potential difference?
- Mon Feb 24, 2020 5:43 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Solar Panels
- Replies: 1
- Views: 153
Solar Panels
How do solar panels work?
- Mon Feb 24, 2020 5:42 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Rechargeable Batteries
- Replies: 4
- Views: 354
Re: Rechargeable Batteries
Just to be safe I would know the example generally because he has mentioned it in lecture but I wouldn't worry about understanding it in depth.
- Mon Feb 24, 2020 5:39 pm
- Forum: Balancing Redox Reactions
- Topic: Acid and Bases in Redox Reaction
- Replies: 4
- Views: 373
Acid and Bases in Redox Reaction
How do acids and bases factor into redox reaction and how do we know which side to add H+ and OH-?
- Mon Feb 24, 2020 5:38 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Derivation of Formula
- Replies: 2
- Views: 215
Derivation of Formula
From what is the Nernst Equation derived from?
- Mon Feb 24, 2020 5:37 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Galvanic/voltaic cell
- Replies: 6
- Views: 457
Galvanic/voltaic cell
What is the galvanic/voltaic cell and how is it different from an electrochemical cell?
- Mon Feb 17, 2020 10:52 am
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Open Systems
- Replies: 15
- Views: 843
Open Systems
Which equations can be applied to open systems?
- Mon Feb 17, 2020 10:51 am
- Forum: Biological Examples (*DNA Structural Transitions, etc.)
- Topic: Examples Expected to Know
- Replies: 15
- Views: 1780
Examples Expected to Know
Is there a list of biological examples that we should know or should we just be aware of the examples Lavelle mentions in class?
- Mon Feb 17, 2020 10:48 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Free Energy and Work
- Replies: 5
- Views: 392
Free Energy and Work
What is the relationship between free energy and work? This is one of the learning objectives from Thermodynamics.
- Mon Feb 17, 2020 10:45 am
- Forum: Van't Hoff Equation
- Topic: Derivation of Van't Hoff
- Replies: 3
- Views: 221
Derivation of Van't Hoff
What two equations is Van't Hoff derived from?
- Mon Feb 17, 2020 10:44 am
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Reversible and Irreversible
- Replies: 5
- Views: 444
Reversible and Irreversible
Can the second law be applied to irreversible reactions?
- Sun Feb 09, 2020 11:34 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: State Functions
- Replies: 5
- Views: 518
Re: State Functions
The nemonic device is "when you are under Pressure and Depressed, watch TV and get HUGS"
Pressure
density
Temp.
Volume
H Enthalpy
U Internal Energy
G Gibbs Free Energy
S Entropy
The two things that are not considered state functions are Work and Heat.
Pressure
density
Temp.
Volume
H Enthalpy
U Internal Energy
G Gibbs Free Energy
S Entropy
The two things that are not considered state functions are Work and Heat.
- Sun Feb 09, 2020 11:29 pm
- Forum: Calculating Work of Expansion
- Topic: Derivation of Formula
- Replies: 3
- Views: 124
Derivation of Formula
Should we know how to derive the equation for work for isothermal reversible reactions? As in know the integral and how it results in the equation?
- Sun Feb 09, 2020 11:27 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Reversible Reactions vs. Irreversible Reactions
- Replies: 6
- Views: 258
Reversible Reactions vs. Irreversible Reactions
Should we be able to produce the graphs associated with each?
- Sun Feb 09, 2020 11:26 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Cv vs. Cp
- Replies: 5
- Views: 254
Cv vs. Cp
When should we use Cv and when should we use Cp?
- Sun Feb 09, 2020 11:25 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: All Laws of Thermodynamics
- Replies: 2
- Views: 157
All Laws of Thermodynamics
Should we be able to verbally explain all the laws or is knowing the equations associated with each law what we are expected to know?
- Sun Feb 02, 2020 10:28 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Heat Capacity at Constant Volume and Pressure
- Replies: 1
- Views: 113
Heat Capacity at Constant Volume and Pressure
What is the relationship between heat capacity at constant volume and heat capacity at constant pressure?
- Sun Feb 02, 2020 10:26 pm
- Forum: Phase Changes & Related Calculations
- Topic: Heating Curve
- Replies: 6
- Views: 976
Heating Curve
How do you read and interpret a heating curve?
- Sun Feb 02, 2020 10:22 pm
- Forum: Phase Changes & Related Calculations
- Topic: Different Energies
- Replies: 1
- Views: 100
Different Energies
Do we need to be able to differentiate between translational energy, rotational energy, and vibrational energy? If so, what is the difference.
- Sun Feb 02, 2020 10:21 pm
- Forum: Phase Changes & Related Calculations
- Topic: Equipartition Theorum
- Replies: 2
- Views: 135
Equipartition Theorum
To what extent do we need to know this theorem?
- Sun Feb 02, 2020 10:20 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: State Function
- Replies: 4
- Views: 275
State Function
Why is internal energy a state function when heat and work are not?
- Sun Jan 26, 2020 8:33 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hess's Law
- Replies: 4
- Views: 146
Hess's Law
Are all three of the methods Lavelle did on 1/24/20 part of Hess's law or just the first one?
- Sun Jan 26, 2020 8:30 pm
- Forum: Phase Changes & Related Calculations
- Topic: Heat v Enthalpy
- Replies: 3
- Views: 150
Heat v Enthalpy
Why is heat not a state function while enthalpy is?
- Sun Jan 26, 2020 8:03 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: 4A Thinking Point
- Replies: 2
- Views: 98
4A Thinking Point
A thinking point in 4A asked "how could you ensure that an electric battery produced an electric current reversibly?". How would this be done and how does it relate to the idea that the work a system can do is greatest in a reversible process.
- Sun Jan 26, 2020 8:00 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Reversible Reactions
- Replies: 3
- Views: 228
Reversible Reactions
What makes a reaction reversible?
- Wed Jan 22, 2020 7:29 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: 6D 15b
- Replies: 2
- Views: 142
6D 15b
How do you do 15b? How do you know what ka is and that the water hydrates the metal?
- Wed Jan 22, 2020 7:27 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Autoprotolysis
- Replies: 1
- Views: 84
Autoprotolysis
Is this reaction endothermic or exothermic and why?
- Mon Jan 20, 2020 1:11 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Pressure changes
- Replies: 5
- Views: 201
Pressure changes
If both sides have the same amount of moles, what happens when there is a change in pressure.
- Mon Jan 20, 2020 1:09 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Summary of Le Chatelier
- Replies: 5
- Views: 296
Summary of Le Chatelier
What are all the components of Le Chatelier's Principle?
- Mon Jan 20, 2020 1:07 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Inert Gas
- Replies: 6
- Views: 178
Inert Gas
Why does adding an inert gas and therefor increasing the pressure not have an effect?
- Mon Jan 20, 2020 1:06 pm
- Forum: General Science Questions
- Topic: Buffers
- Replies: 2
- Views: 127
Buffers
How do buffers work and what do we need to know about them?
- Mon Jan 20, 2020 1:05 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: 5% Rule
- Replies: 6
- Views: 323
Re: 5% Rule
Yes the 5% rule does apply to both because they are essentially the same process.
- Sun Jan 12, 2020 6:00 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Test 1
- Replies: 6
- Views: 213
Re: Test 1
Test 1 starts the week of 1/21/2020
- Sun Jan 12, 2020 5:57 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Q>K
- Replies: 9
- Views: 251
Q>K
In what situations could Q>K?
- Sun Jan 12, 2020 5:56 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Units for K
- Replies: 21
- Views: 588
Re: Units for K
K doesn't have units because it is a ratio of molar concentrations.
- Sun Jan 12, 2020 5:53 pm
- Forum: Ideal Gases
- Topic: Bars vs atmospheres
- Replies: 13
- Views: 302
Re: Bars vs atmospheres
Bars and atmospheres are both units of pressure and you should be able to use both as long as the units are the same throughout the problem.
- Sun Jan 12, 2020 5:47 pm
- Forum: Ideal Gases
- Topic: Review Ideal Gas
- Replies: 1
- Views: 87
Review Ideal Gas
Is it helpful to review the Ideal gases in Focus 3A-D?
- Sun Dec 08, 2019 5:34 pm
- Forum: General Science Questions
- Topic: Organic Molecules
- Replies: 1
- Views: 379
Organic Molecules
In organic molecules, how do we know if there is an "implied" Hydrogen?
- Sun Dec 08, 2019 5:33 pm
- Forum: Amphoteric Compounds
- Topic: Memorization?
- Replies: 10
- Views: 421
Memorization?
Are we required to memorize the amphoteric oxides?
- Sun Dec 08, 2019 5:32 pm
- Forum: Air Pollution & Acid Rain
- Topic: Respiratory Acidosis
- Replies: 4
- Views: 554
Respiratory Acidosis
What causes respiratory acidosis?
- Sun Dec 08, 2019 5:31 pm
- Forum: DeBroglie Equation
- Topic: deBroglie derived
- Replies: 2
- Views: 362
deBroglie derived
What equations/concepts is deBroglie's equation derived from?
- Sun Dec 08, 2019 5:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Grades [ENDORSED]
- Replies: 2
- Views: 322
Final Grades [ENDORSED]
When will the final grades for the class be posted? I know that Lavelle decides the cut-offs for grades so when will we know our final letter grade.
- Sat Nov 30, 2019 9:59 pm
- Forum: Student Social/Study Group
- Topic: Final Preparation
- Replies: 2
- Views: 189
Final Preparation
Is it fair to assume that all topics will be covered equally on the final or are there some topics that I should study more carefully than others
- Sat Nov 30, 2019 9:51 pm
- Forum: Bronsted Acids & Bases
- Topic: J.21
- Replies: 1
- Views: 148
J.21
How do you do J.21 (b). Is it just a regular molarity problem?
- Sat Nov 30, 2019 9:42 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: What to know for the final
- Replies: 8
- Views: 440
What to know for the final
Neither section 6C.1, the Acidity and Basicity Constants section, nor section 6C.2, the Conjugate Seesaw section, were assigned in the reading or homework problems. Will we need to know about these topics and if so what do we need to know.
- Sat Nov 30, 2019 9:36 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Calculating pOH
- Replies: 2
- Views: 105
Calculating pOH
Will we need to know how to calculate pOH because only 6B.1(which only goes over calculating pH) in the textbook was assigned but some of the practice questions require us to know how to calculate it.
- Sat Nov 30, 2019 9:29 pm
- Forum: Polyprotic Acids & Bases
- Topic: Section 6E.1
- Replies: 2
- Views: 132
Section 6E.1
Will we be required to calculate the pH of polyprotic acids like it is explained in section 6E.1?
- Sun Nov 24, 2019 10:25 pm
- Forum: Hybridization
- Topic: sigma or pi?
- Replies: 20
- Views: 1094
Re: sigma or pi?
All single bonds are sigma bonds. A double bonds has one sigma bond and one pi bond and a triple bond has one sigma bond and two pi bonds.
- Sun Nov 24, 2019 10:23 pm
- Forum: Naming
- Topic: Metallocene
- Replies: 1
- Views: 95
Metallocene
What is a metallocene?
- Sun Nov 24, 2019 10:20 pm
- Forum: Biological Examples
- Topic: Coordination Compounds
- Replies: 2
- Views: 198
Coordination Compounds
Which coordination compounds are we supposed to know for the final? What are all of their biological functions?
- Sun Nov 24, 2019 10:17 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Vitamin B12
- Replies: 1
- Views: 123
Vitamin B12
What is the biological importance of Vitamin B12?
Naming
What compound names do we have to memorize?
- Sun Nov 17, 2019 11:27 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Naming the Molecular Shapes
- Replies: 7
- Views: 473
Re: Naming the Molecular Shapes
I made flashcards with the names and arrangements. They really help in relating the shape to the name.
- Sun Nov 17, 2019 11:24 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Shape
- Replies: 1
- Views: 89
Molecular Shape
If lone pair-lone pair repulsion is the strongest why are lone pairs not considered when identifying a molecules shape?
- Sun Nov 17, 2019 11:22 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Density Isosurface and Electrostatic Potential Surface
- Replies: 1
- Views: 113
Density Isosurface and Electrostatic Potential Surface
Can someone explain what these are in more detail and how they are related?
- Sun Nov 17, 2019 11:19 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Trans vs Cis molecules
- Replies: 2
- Views: 93
Trans vs Cis molecules
During lecture on Friday, Lavelle talked used a trans- and cis- molecules for an example. What is the difference between the two and how does it affect the molecule?
- Sun Nov 17, 2019 11:17 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Radicals and molecular shape
- Replies: 5
- Views: 343
Radicals and molecular shape
How do radicals affect electron arrangement and shape?
- Sun Nov 10, 2019 9:40 pm
- Forum: Dipole Moments
- Topic: Dipole v Instantaneous Dipole
- Replies: 3
- Views: 307
Dipole v Instantaneous Dipole
What is the difference between a dipole moment and an instantaneous dipole moment?
- Sun Nov 10, 2019 9:37 pm
- Forum: Dipole Moments
- Topic: Hydrogen Bonding
- Replies: 6
- Views: 409
Hydrogen Bonding
The book says that hydrogen bonding is the strongest type of intermolecular forces but isn't it weaker than covalent and ionic bonds?
- Sun Nov 10, 2019 9:33 pm
- Forum: Dipole Moments
- Topic: London Interaction Strength
- Replies: 3
- Views: 155
London Interaction Strength
What is the strength of a London Interaction dependent on?
- Sun Nov 10, 2019 9:32 pm
- Forum: Dipole Moments
- Topic: London Interaction
- Replies: 4
- Views: 132
London Interaction
What causes a London Interaction?
- Sun Nov 10, 2019 9:30 pm
- Forum: Dipole Moments
- Topic: Hydrogen Bonds
- Replies: 4
- Views: 200
Hydrogen Bonds
Which elements can form a Hydrogen bond?
- Wed Nov 06, 2019 8:35 pm
- Forum: Bond Lengths & Energies
- Topic: Midterm
- Replies: 9
- Views: 473
Midterm
When will the midterm be graded?
- Sun Nov 03, 2019 10:24 pm
- Forum: Electronegativity
- Topic: 2D.7
- Replies: 2
- Views: 181
Re: 2D.7
I think this problem is just asking you which of the compounds is more ionic. Since highly covalent compounds are not very soluble, the less covalent, the more soluble the compound would be; so you're just looking for the compound with the bigger difference in electronegativities(more ionic) using e...
- Sun Nov 03, 2019 10:20 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarity vs Polarizability
- Replies: 3
- Views: 226
Re: Polarity vs Polarizability
An atom that is highly polarizable if their electron cloud can readily undergo a large distortion while an atom that has high polarizing power can cause large distortions.
- Sun Nov 03, 2019 10:15 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge Work on Test
- Replies: 2
- Views: 78
Formal Charge Work on Test
Should we write out the full formula of formula charge for each atom on the test or can we just use the method Lyndon taught us in the review session
- Sun Nov 03, 2019 10:14 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Easier way to calculate/remember?
- Replies: 7
- Views: 364
Re: Easier way to calculate/remember?
You can count the number of dots and bonds of the atom and subtract that from the number of valence electrons to find the Formal Charge quickly
- Sun Nov 03, 2019 10:13 pm
- Forum: Dipole Moments
- Topic: Dipole Arrow
- Replies: 5
- Views: 236
Dipole Arrow
The book says that in modern convention, the dipole arrow is pointed to the positive atom but Lavelle draws it pointed toward the negative atom. Which one do we follow
- Sun Nov 03, 2019 10:06 pm
- Forum: *Shrodinger Equation
- Topic: Schrodinger relationships
- Replies: 4
- Views: 293
Schrodinger relationships
What is the relationship between Schrodinger's equation, wave functions, and orbitals
- Mon Oct 28, 2019 8:01 pm
- Forum: Ionic & Covalent Bonds
- Topic: Midterm
- Replies: 28
- Views: 1213
Midterm
What content will the midterm be covering? Someone told me that the midterm goes up to the lecture of Friday 10/25 but I just wanted to clarify.
- Sun Oct 27, 2019 8:59 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic v. Covalent
- Replies: 7
- Views: 217
Ionic v. Covalent
What are the differences between the two and which one is stronger?
- Sun Oct 27, 2019 8:57 pm
- Forum: Bond Lengths & Energies
- Topic: Lattice Energy
- Replies: 9
- Views: 408
Lattice Energy
I did not really understand the definition that the book gave. Can someone clarify what lattice energy is?
- Sun Oct 27, 2019 8:53 pm
- Forum: Trends in The Periodic Table
- Topic: Inert-Pair Effect
- Replies: 1
- Views: 97
Inert-Pair Effect
I don't really understand the inert-pair effect. Can someone explain it and give more examples of which elements display the effect?
- Sun Oct 27, 2019 8:48 pm
- Forum: Trends in The Periodic Table
- Topic: Electron Affinity on the Test
- Replies: 3
- Views: 87
Electron Affinity on the Test
Will we need to know how to calculate/do calculation with electron affinity on the midterm or just know the trends that periodic table follows(ie. which part of the table has the highest and lowest electron affinity)
- Sun Oct 27, 2019 8:45 pm
- Forum: Trends in The Periodic Table
- Topic: Electronegativity vs. Electron affinity
- Replies: 8
- Views: 560
Re: Electronegativity vs. Electron affinity
Electronegativity is the tendency of an atom to attract a bonding pair of electrons while electron affinity is the energy required/released when an electron attaches to an atom(measured in eV).
- Fri Oct 18, 2019 2:37 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Exceptions
- Replies: 4
- Views: 216
Exceptions
Today in lecture, Lavelle mentioned that Cr and Cu are exceptions to the general configuration pattern. Are there any other exceptions that we need to know?
- Fri Oct 18, 2019 2:36 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Hund's Rule
- Replies: 3
- Views: 186
Hund's Rule
Can someone explain Hund's rule more in depth?
- Fri Oct 18, 2019 2:30 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Best Way To Study?
- Replies: 56
- Views: 3352
Re: Best Way To Study?
I read the textbook after the lectures to make sure I really grasp what he wants us to know and then I do the homework problems. The modules are also extremely helpful because you can pause/slow down the video lecture to make you understand the concepts.
- Fri Oct 18, 2019 2:23 pm
- Forum: Photoelectric Effect
- Topic: Intensity v Frequency
- Replies: 5
- Views: 307
Intensity v Frequency
Can someone explain the difference between intensity and frequency?
- Fri Oct 18, 2019 2:21 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Nodal Plane
- Replies: 4
- Views: 128
Nodal Plane
What is a nodal plane and what does it mean that the s-orbitals do not have one?
- Sun Oct 13, 2019 4:37 pm
- Forum: Properties of Light
- Topic: Quanta
- Replies: 4
- Views: 231
Quanta
In the 10/04 lecture, Lavelle mentioned that light is absorbed/emitted in discrete units(quanta or photons). What is quanta and what are its units?
- Sun Oct 13, 2019 4:32 pm
- Forum: Properties of Electrons
- Topic: Diffraction
- Replies: 6
- Views: 188
Re: Diffraction
Here is a good graphic to sum up the difference between Constructive and Destructive Interference:
https://cdn.britannica.com/07/62907-004-A3A6351E.jpg
https://cdn.britannica.com/07/62907-004-A3A6351E.jpg
- Sun Oct 13, 2019 4:22 pm
- Forum: Properties of Light
- Topic: Wave-Particle Behavior
- Replies: 4
- Views: 272
Wave-Particle Behavior
Which observations support the particle behavior view of electromagnetic radiation and which observations support the wave view?
- Sun Oct 13, 2019 3:59 pm
- Forum: Photoelectric Effect
- Topic: Avogadro's number
- Replies: 7
- Views: 433
Re: Avogadro's number
You usually divide by Avogadro's number when the question gives you the number of molecules and is asking you to find the number of moles of a compound.
- Sun Oct 13, 2019 3:47 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 416400
Re: Rusty on High School Chem [ENDORSED]
I haven't taken chem since sophomore year of high school so I am in a similar position. One thing that I've been doing is reading the textbook pages that correspond to the lesson because I think it gives me a wider understanding of the topic.