Search found 101 matches
- Sun Mar 15, 2020 9:57 pm
- Forum: General Rate Laws
- Topic: Rate Constants
- Replies: 3
- Views: 385
Rate Constants
What does it mean for a reaction to be pseudo-first-order?
- Sun Mar 15, 2020 9:54 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Solving for rates
- Replies: 3
- Views: 351
Re: Solving for rates
If I'm thinking of the same problem, it seems to be asking about the rate of disappearance of oxygen. In that case you would multiply the rate given by the ratio of oxygen shown in the reaction.
- Sun Mar 15, 2020 9:52 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Kinetic vs thermodynamics
- Replies: 8
- Views: 561
Re: Kinetic vs thermodynamics
You shouldn't confuse the two when doing calculations. When a question is asking about thermodynamics and kinetics at the same time it is most likely a conceptual problem that has to do energy profiles.
- Sun Mar 15, 2020 9:50 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Activation Energy and Energy of a Reaction
- Replies: 10
- Views: 624
Re: Activation Energy and Energy of a Reaction
The rate constant, k, is dependent on temperature and directly proportional to it. An increase in temperature would increase k and speed up a reaction.
- Wed Mar 11, 2020 7:42 pm
- Forum: Student Social/Study Group
- Topic: Final Exam
- Replies: 22
- Views: 1597
Re: Final Exam
How exactly will be turning in our finals? If we're going to scan them, does anyone know how that works?
- Sun Mar 08, 2020 8:50 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Exothermic vs. Endothermic
- Replies: 14
- Views: 977
Exothermic vs. Endothermic
By looking at energy profiles, how can you tell if it is showing an endothermic or exothermic reaction?
- Sun Mar 08, 2020 8:48 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: 7.11
- Replies: 1
- Views: 136
7.11
How can you determine which step is the slow by just looking at the reactions alone? For this problem step 2 is the slow step but I'm not understanding how you can determine that with just the reactions given.
- Sun Mar 08, 2020 8:41 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: 7.9
- Replies: 2
- Views: 279
7.9
The solution ti this problem uses the word "pseudo-first-order" to describe the rate mechanism. What does that mean? And how are you able to tell the other of the reaction from the elementary steps alone?
- Sun Mar 08, 2020 8:38 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Homework Problem 7.1
- Replies: 1
- Views: 196
Homework Problem 7.1
This problem asks to distinguish which product has the larger activation energy and the only information given besides the molecule is temperature. Since temperature increases k and speeds up the run shouldn't the product with the lower temperature have the larger activation energy? The answer says ...
- Sun Mar 08, 2020 8:34 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Study Advice
- Replies: 73
- Views: 7161
Re: Study Advice
A lot of people are saying Karen has good review session but I don't see her name or where and when her sessions are on the peer learning sessions link. Does anyone know where and when her review sessions are?
- Sun Mar 01, 2020 11:12 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Calculating standard cell potentials
- Replies: 2
- Views: 238
Calculating standard cell potentials
Which method for calculating the standard cell potential can be used for both galvanic and electrolysis cells?
- Sun Mar 01, 2020 11:11 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Potential Equation
- Replies: 1
- Views: 159
Cell Potential Equation
Will we ever need to use the equation E = E* - (0.0257/n) lnQ ? Or is it only the other equation E = E* - (0.0592/n)logQ ?
- Sun Mar 01, 2020 11:08 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 6L.5
- Replies: 5
- Views: 421
6L.5
For this homework problem, the cell notation includes Pt(s) and I2(s) on the same side of the cell diagram. Why is Pt added if there is already a solid (Iodide) in that half reaction?
- Sun Mar 01, 2020 11:06 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 6L.3
- Replies: 3
- Views: 233
6L.3
For this homework problem, the Ni reduction reaction is flipped so the cell potential should also be flipped from -0.23 to +0.23 but the solution says it remains as -0.23. Why is that?
- Sun Mar 01, 2020 11:03 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Notation
- Replies: 4
- Views: 489
Cell Notation
Why do we not include H20 (l) in the cell notation for a reaction?
- Sun Feb 23, 2020 11:18 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Test 2
- Replies: 6
- Views: 417
Test 2
When does the information for test 2 stop in terms of lecture material?
- Sun Feb 23, 2020 11:16 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: G in standard conditions
- Replies: 2
- Views: 220
G in standard conditions
Besides G(not) being in standard conditions and G not being in standard conditions, do we calculate them both the same way?
- Sun Feb 23, 2020 11:13 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Platinum
- Replies: 4
- Views: 298
Re: Platinum
It's typically because both sides of the reaction require a metal conductor. If one side lacks a metal, you add Platinum which a good inert conductor.
- Sun Feb 23, 2020 11:11 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: State
- Replies: 5
- Views: 402
Re: State
It's usually stated next to the molecule as in N2 (g) or Fe (aq).
- Sun Feb 23, 2020 11:10 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Difference in phases
- Replies: 5
- Views: 335
Difference in phases
Can anyone explain when we use , between 2 molecules vs. when we use | between molecules. For example Fe , Fe || Cl | Cl.
- Sun Feb 16, 2020 7:22 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Temperature Dependence of K
- Replies: 3
- Views: 261
Temperature Dependence of K
When using the Van't Hoff equation why is delta H in the equation if we're assuming change in enthalpy is constant?
- Sun Feb 16, 2020 7:21 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Van't Hoff Equation
- Replies: 2
- Views: 167
Van't Hoff Equation
Why do we assume change in entropy is constant in this equation?
- Sun Feb 16, 2020 7:19 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: K equation with Gibbs free energy
- Replies: 3
- Views: 194
K equation with Gibbs free energy
For the equation G = G* +RTlnQ are we actually using this equation or only/primarily the 0=G* + RTlnK ?
- Sun Feb 16, 2020 7:16 pm
- Forum: Balancing Redox Reactions
- Topic: In Class Example
- Replies: 4
- Views: 313
In Class Example
Can anyone explain the end result for the reaction Dr. Lavelle did in class with permanganate and iron?
- Sun Feb 16, 2020 7:13 pm
- Forum: Phase Changes & Related Calculations
- Topic: Heating curve
- Replies: 5
- Views: 694
Re: Heating curve
There technically is no temperature change at the plateaus where phase changes occur (i.e. melting is 0 degrees---> 0 degrees). For phase changes you use q=m(delta H) and for a temperature change you use q= mCAT.
- Thu Feb 13, 2020 2:18 pm
- Forum: Administrative Questions and Class Announcements
- Topic: AIRPODS MISSING!!!
- Replies: 1
- Views: 696
AIRPODS MISSING!!!
I had my AirPods with a Louis Vuitton case on them in my backpack right before I started the Chem 14B midterm yesterday. I was in Franz 1178 and I believe someone took them because they were in my bag right next to all of the other bags in the front and now they’re not. If you took my AirPods or hav...
- Sun Feb 09, 2020 8:11 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Gas Constant
- Replies: 3
- Views: 175
Re: Gas Constant
Does R always equal 8.314 when using Cv=3/2R and Cp=5/2R?
- Sun Feb 09, 2020 8:10 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Expansion work/ Compression
- Replies: 7
- Views: 398
Re: Expansion work/ Compression
w = (+) when work is done on the system (compression)
w = (-) when work is done by the system (expansion)
w = (-) when work is done by the system (expansion)
- Sun Feb 09, 2020 8:06 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Gas Constant
- Replies: 3
- Views: 175
Gas Constant
How do you know when to use R=8.314 vs. R= 0.08206
- Sun Feb 09, 2020 8:05 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Cv vs. Cp
- Replies: 2
- Views: 139
Cv vs. Cp
I know that Cv= 3/2R and Cp=5/2R but how do know which one to use when calculating q=mCAT when it doesn't specify constant volume/pressure?
- Sun Feb 09, 2020 8:02 pm
- Forum: Phase Changes & Related Calculations
- Topic: Phase Change Calculations
- Replies: 5
- Views: 189
Phase Change Calculations
For the midterm will we be given the change in enthalpy for vaporization/fusion of water or do we have to memorize it?
- Sun Feb 09, 2020 8:00 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bond Enthalpies
- Replies: 6
- Views: 308
Bond Enthalpies
When calculating bond enthalpies, how can you tell which bonds are broken and which ones are formed?
- Sun Feb 09, 2020 7:59 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 4E.5
- Replies: 1
- Views: 143
4E.5
Why don't we consider the C--H bonds when calculating the bond enthalpies for this question?
- Sun Feb 09, 2020 7:58 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: 4D.3
- Replies: 1
- Views: 115
4D.3
For this problem, can anyone explain why q is negative in the final calculation?
- Sun Feb 09, 2020 7:56 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Calorimeter Calculations
- Replies: 3
- Views: 131
Calorimeter Calculations
What is the difference between q=mCAT and q=CAT?
- Sun Feb 09, 2020 7:53 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Calculating q
- Replies: 4
- Views: 600
Calculating q
How do you know when to use q=mCAT/nCAT vs. q=CAT?
- Sun Jan 26, 2020 11:35 pm
- Forum: Phase Changes & Related Calculations
- Topic: State Function
- Replies: 3
- Views: 102
State Function
Dr. Lavelle mentioned in lecture that because enthalpy is a state function it MUST be additive. Why is that? and what does that mean?
- Sun Jan 26, 2020 11:32 pm
- Forum: Phase Changes & Related Calculations
- Topic: Chem 14A Final Pickup
- Replies: 8
- Views: 372
Chem 14A Final Pickup
Has anyone picked up their Chem 14A final from Young Hall yet? Are we still able to pick them up this week?
- Sun Jan 26, 2020 11:30 pm
- Forum: Phase Changes & Related Calculations
- Topic: Test 1
- Replies: 6
- Views: 231
Re: Test 1
Wow I thought they'd be available sooner. Thanks.
- Sun Jan 26, 2020 11:29 pm
- Forum: Phase Changes & Related Calculations
- Topic: ∆H
- Replies: 17
- Views: 677
Re: ∆H
I think another is by looking at the energy graphs he's gonna cover soon.
- Sun Jan 26, 2020 11:27 pm
- Forum: Phase Changes & Related Calculations
- Topic: Test 1
- Replies: 6
- Views: 231
Test 1
Does anyone know when the grades for Test 1 will be available?
- Sun Jan 19, 2020 11:41 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: determining which way the reaction is going
- Replies: 5
- Views: 341
Re: determining which way the reaction is going
What is the process for determining which way the reaction is going when we're not dealing with a gas and not a concentration?
- Sun Jan 19, 2020 11:39 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: K vs Q
- Replies: 14
- Views: 404
Re: K vs Q
You can think of Q on a "number line" with K where Q is on either side of K and K is in the middle like 0. When a reaction is not at equilibrium you want to find Q to determine which way the rxn will shift to reach K at equilibrium. If Q is less than K the rxn will move right towards K, th...
- Sun Jan 19, 2020 11:36 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Approximations
- Replies: 3
- Views: 126
Re: Approximations
When a concentration value is less than 10^-3 you can approximate that the value is so small that it will not be significant in the problem so you disregard it in the calculation. This approximation is valid if it's less than 5% of the initial concentration.
- Sun Jan 19, 2020 11:32 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Combining Reactions
- Replies: 3
- Views: 162
Combining Reactions
If two different reactions are given with a K value for each and you are asked to calculate the K value of the third reaction based on what is given, how would you know when to combine or how to combine the reaction the get the K value?
- Sun Jan 19, 2020 11:23 pm
- Forum: Ideal Gases
- Topic: Partial Pressure
- Replies: 4
- Views: 273
Partial Pressure
For test 1, will we need to know how to calculate the partial pressure of a gas if it isn't given?
- Sun Jan 12, 2020 6:34 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: What is this?
- Replies: 23
- Views: 1484
Re: What is this?
You wouldn't necessarily use the principle in a calculation, it's more so to predict which way the reaction will shift given an increase or decrease to the products or reactants.
- Sun Jan 12, 2020 6:31 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Practice Problems
- Replies: 4
- Views: 474
Practice Problems
Does anyone know of a good homework question that involves applying Le Chatelier's Principle to an actual equation/problem?
- Sun Jan 12, 2020 6:28 pm
- Forum: Ideal Gases
- Topic: Gas Laws
- Replies: 6
- Views: 186
Re: Gas Laws
Dr. Lavelle also hasn't covered nor mentioned any of the other gas laws so I don't think we would need to explain the definition or specifics of any of them besides the ideal gas law.
- Sun Jan 12, 2020 6:24 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Reaction Quotient Q
- Replies: 6
- Views: 175
Reaction Quotient Q
How do we distinguish when to calculate Q instead of K or vice versa?
- Sun Jan 12, 2020 6:20 pm
- Forum: Ideal Gases
- Topic: P=(n/v)RT
- Replies: 12
- Views: 1032
Re: P=(n/v)RT
You can get the same answer either way you write it but using P=(n/V)RT makes it easier when you need to convert between the concentration and partial pressure of a compound.
- Sun Dec 08, 2019 8:03 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: chelating ligands [ENDORSED]
- Replies: 51
- Views: 98603
Re: chelating ligands [ENDORSED]
An example would be ethylenediamine (en) which binds to a transition metal at 2 sites.
- Thu Dec 05, 2019 3:00 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: pH, pKa, pKb
- Replies: 5
- Views: 413
Re: pH, pKa, pKb
Can we use the same formulas for pOH/pH to calculate pKa and pKb?
- Thu Dec 05, 2019 2:59 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Ka and Kb
- Replies: 3
- Views: 382
Re: Ka and Kb
Is there any examples of this in the textbook? It would make more sense if I saw problem related to this topic
- Thu Dec 05, 2019 2:57 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Ice tables
- Replies: 3
- Views: 216
Re: Ice tables
No ICE tables are only used for weak acid/base calculations which we won't be doing for this class.
- Thu Dec 05, 2019 2:56 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Calculations
- Replies: 1
- Views: 109
Calculations
Does anyone know if we will have to use ICE tables for the final in order to calculate pH of strong acids/bases or is this only for weak acids/bases.
- Sun Dec 01, 2019 10:19 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Equilibrium constants
- Replies: 3
- Views: 157
Re: Equilibrium constants
kA is just the constant for acids. pkA refers to the pH of kA which is just -log(kA).
- Sun Dec 01, 2019 10:16 pm
- Forum: Bronsted Acids & Bases
- Topic: Conjugate acids and bases
- Replies: 5
- Views: 488
Re: Conjugate acids and bases
There's also a chart for this online if you look it up. There a list of the strong acids and strong bases that conjugate bases/acids come from.
- Sun Dec 01, 2019 10:14 pm
- Forum: Bronsted Acids & Bases
- Topic: Strong/Weak Acids and Bases
- Replies: 2
- Views: 215
Re: Strong/Weak Acids and Bases
Do you guys know if we would actually have to know that for the final?
- Sun Dec 01, 2019 10:13 pm
- Forum: Bronsted Acids & Bases
- Topic: Naming
- Replies: 4
- Views: 369
Naming
Will we have to know how to write the formula for a coordination compound from the name? Like if we're given a long name would we have to write (C6H4)2 or something like that ?
- Sun Dec 01, 2019 10:11 pm
- Forum: Bronsted Acids & Bases
- Topic: naming
- Replies: 4
- Views: 306
Re: naming
Also, there may be some things not listed on his sheet that may be need to be used in naming like ferrate,etc. is not listed on there.
- Sun Dec 01, 2019 10:09 pm
- Forum: Bronsted Acids & Bases
- Topic: Final
- Replies: 13
- Views: 867
Re: Final
Does anyone know if calculations for acids and bases will be on the final?
Re: Oxidation
Also can anyone explain what oxidation is? And what Dr. Lavelle meant by oxidation states? I don't remember him explaining the concept in class.
- Sun Nov 24, 2019 8:47 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 2
- Replies: 2
- Views: 235
Test 2
Does anyone know when test 2 will be handed back for sections on Wednesday-Friday since we'll be on break next week?
- Sun Nov 24, 2019 8:44 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Hydrogen Bonding
- Replies: 13
- Views: 724
Hydrogen Bonding
If hydrogen bonding is present does that always mean the molecule is polar?
- Sun Nov 24, 2019 8:43 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polarity
- Replies: 3
- Views: 261
Polarity
Will we need to know how to determine the polarity of large compounds/molecules? For example, CH3COOH?
- Sun Nov 24, 2019 8:42 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 2
- Replies: 14
- Views: 777
Re: Test 2
Will we need to know how to draw/know the shape of a molecule with more than one central atom?
- Sun Nov 17, 2019 5:55 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Dispersion
- Replies: 5
- Views: 345
Dispersion
Will we have to know about dispersion and induced dipole for test 2? Or is it only london forces, dipole-dipole, and hydrogen bonding?
- Sun Nov 17, 2019 5:49 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Dipole Moment
- Replies: 3
- Views: 262
Dipole Moment
Whenever the dipole moments don't cancel can we assume that it is a polar molecule.
- Sun Nov 17, 2019 5:45 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR repulsion model
- Replies: 8
- Views: 619
Re: VSEPR repulsion model
How do you make sure your'e using the correct Lewis structure when estimating the bond angle?
- Sun Nov 17, 2019 5:44 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Grading
- Replies: 7
- Views: 469
Re: Grading
I believe he doesn't make the curve until after the final so it changes each quarter but I'm hoping there's some type of curve because that's not a great average.
- Sun Nov 17, 2019 5:38 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 2
- Replies: 19
- Views: 888
Re: Test 2
You should draw the most stable Lewis structure when doing calculating the bond angle.
- Sun Nov 17, 2019 5:36 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Grading
- Replies: 7
- Views: 469
Grading
Does anyone know the grading scale for this class? I know that 50% is a C- but are the other grades also a lower percentage?
- Sun Nov 17, 2019 5:35 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Order
- Replies: 3
- Views: 278
Bond Order
Do we need to know the bond order or how to find it when finding the bond angle? Or is the bond order for bond length
- Sun Nov 17, 2019 5:24 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bonded and Lone Pairs in VSEPR
- Replies: 4
- Views: 356
Re: Bonded and Lone Pairs in VSEPR
Do lone pairs also count as a region of electron density?
- Sun Nov 17, 2019 5:22 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Do we have to memorize the names of shapes and/or the bond angles?
- Replies: 7
- Views: 527
Re: Do we have to memorize the names of shapes and/or the bond angles?
Does anyone know if test 2 is only covering outline 4? Or is it also outline 3?
- Tue Nov 05, 2019 11:02 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Quantum Numbers
- Replies: 4
- Views: 1014
Re: Quantum Numbers
There was also a question: How many electrons can have the following quantum numbers in an atom?
a) n=5, l=3, ml= -1 and the answer was 2 electrons
Can anyone explain why the answer is 2 electrons and not 14 since l corresponds to f orbital and f orbital can hold 14 electrons?
a) n=5, l=3, ml= -1 and the answer was 2 electrons
Can anyone explain why the answer is 2 electrons and not 14 since l corresponds to f orbital and f orbital can hold 14 electrons?
- Sun Nov 03, 2019 7:20 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: general question
- Replies: 2
- Views: 191
Re: general question
What is distortion in terms of electrons?
- Sun Nov 03, 2019 7:17 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Ionization Energy
- Replies: 3
- Views: 164
Re: Ionization Energy
Is it always the case that N has a higher ionization energy than O?
- Sun Nov 03, 2019 7:05 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizable vs Polarizing
- Replies: 6
- Views: 321
Re: Polarizable vs Polarizing
What's the difference between ionic character and covalent character?
- Sun Nov 03, 2019 7:02 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Distorted Electrons
- Replies: 4
- Views: 287
Re: Distorted Electrons
Does this apply to both ionic and covalent bonds?
- Sun Nov 03, 2019 7:01 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizing Power
- Replies: 3
- Views: 169
Re: Polarizing Power
Does polarization power only apply to ionic bonds?
- Sun Oct 27, 2019 10:08 pm
- Forum: Ionic & Covalent Bonds
- Topic: Metals Vs. Nonmetals
- Replies: 8
- Views: 624
Re: Metals Vs. Nonmetals
I was looking for an answer to that, that explanation was very helpful!
- Sun Oct 27, 2019 10:03 pm
- Forum: Ionic & Covalent Bonds
- Topic: periodic table
- Replies: 10
- Views: 414
Re: periodic table
Is this the same for ionization energy?
- Sun Oct 27, 2019 10:01 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic and Covalent Bonds and Electrons
- Replies: 3
- Views: 165
Re: Ionic and Covalent Bonds and Electrons
Dr. Lavelle said in lecture that p-block non-metals form anions and gain p valence electrons until the following noble gas electron configuration is reached. Can anyone explain this?
- Sun Oct 27, 2019 9:55 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic VS. Covalent Bond
- Replies: 8
- Views: 469
Re: Ionic VS. Covalent Bond
Dr. Lavelle said in lecture that main group metals form cations and lose s & p valence electrons. Can anyone explain this ?
- Sun Oct 27, 2019 9:51 pm
- Forum: Ionic & Covalent Bonds
- Topic: Covalent Bonds
- Replies: 14
- Views: 1092
Re: Covalent Bonds
What did Dr. Lavelle mean when he said non-metals do not form cation because their ionization energies are too high?
- Sun Oct 20, 2019 9:21 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Bohr's Equation
- Replies: 5
- Views: 244
Re: Bohr's Equation
Does anyone know if all the equations are typically given on the midterm like they were on the test?
- Sun Oct 20, 2019 9:18 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Best Way To Study?
- Replies: 56
- Views: 3552
Re: Best Way To Study?
Oh wow I had no idea there was solution manual. Thanks!
- Sun Oct 20, 2019 9:17 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Kinetic Energy
- Replies: 4
- Views: 249
Kinetic Energy
In the equation, E= work function + KE (kinetic energy), how do we know when kinetic energy is equal to 0?
- Sun Oct 20, 2019 9:13 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg's Constant
- Replies: 3
- Views: 158
Re: Rydberg's Constant
Does anyone know what the actual constant is for Rydberg's constant? Or is it the (1/n1 - 1/n2)?
- Sun Oct 20, 2019 9:11 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Best Way To Study?
- Replies: 56
- Views: 3552
Re: Best Way To Study?
When studying by doing practice problems from the textbook, how do you guys check if your answers are correct? For me many times I may think I got the correct answer when I really didn't.
- Sun Oct 20, 2019 9:07 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: States of Matter
- Replies: 9
- Views: 706
Re: States of Matter
Good response! that explanation helped a lot.
- Sun Oct 20, 2019 9:05 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Test 1 [ENDORSED]
- Replies: 107
- Views: 22367
Re: Test 1 [ENDORSED]
Are we able to review the test up until the midterm?
- Sun Oct 20, 2019 9:03 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Accessing the E-textbook [ENDORSED]
- Replies: 125
- Views: 32881
Re: Accessing the E-textbook [ENDORSED]
Does anyone know if Sapling is mandatory?
- Sun Oct 20, 2019 9:01 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: s-, p-, d- ,f- orbitals
- Replies: 10
- Views: 491
Re: s-, p-, d- ,f- orbitals
Can anyone explain how to list the orbitals for an element. Dr. Lavelle went over it in lecture but he did not explain the process fully.
- Sun Oct 13, 2019 10:50 pm
- Forum: SI Units, Unit Conversions
- Topic: Angstrom
- Replies: 16
- Views: 890
Re: Angstrom
I believe it’s not because it’s not in the U.S. metric system but I doubt Dr. Lavelle would expect us to know why it’s not.
- Sun Oct 13, 2019 10:46 pm
- Forum: Properties of Light
- Topic: De Broglie equation
- Replies: 4
- Views: 158
Re: De Broglie equation
Do you guys think that would be asked explicitly in the problem so we would know when to use it ?
- Sun Oct 13, 2019 10:44 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Tutoring? [ENDORSED]
- Replies: 121
- Views: 269879
Re: Tutoring? [ENDORSED]
Is there a contact number for their tutoring ? Or an email? I can’t find it anywhere.
- Sun Oct 13, 2019 10:41 pm
- Forum: DeBroglie Equation
- Topic: Wavelength
- Replies: 6
- Views: 263
Re: Wavelength
Does anyone have a picture of the slide Dr Lavelle showed in class with infrared radiaton experimental data?