Search found 73 matches
- Sun Dec 08, 2019 7:30 pm
- Forum: General Science Questions
- Topic: Final
- Replies: 2
- Views: 389
Re: Final
In my opinion, I thought that the final was easier compared to the midterm. However, there were definitely a few that I was unsure on, and in my opinion it wasn't an objectively 'easy' test. I never really know how to feel after his tests until I get the grade back. But overall, better than the midt...
- Sat Dec 07, 2019 1:08 pm
- Forum: Biological Examples
- Topic: Porphyrin
- Replies: 1
- Views: 144
Porphyrin
Is porphyrin a tetradentate ligand?
- Sat Dec 07, 2019 12:52 pm
- Forum: Administrative Questions and Class Announcements
- Topic: MARSHMALLOW- FINAL REVIEW SESSION [ENDORSED]
- Replies: 115
- Views: 11830
Re: MARSHMALLOW- FINAL REVIEW SESSION [ENDORSED]
for mini marshmallow 2b, why is the coordination number for Dihydroxoyoxolatocobalt (III) 4? Is it because oxalato is bidentate and can attach to cobalt at two places?
- Thu Dec 05, 2019 3:38 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Titrations
- Replies: 2
- Views: 267
Titrations
What are we required to know about titrations and the stoichiometric point for the final?
- Thu Dec 05, 2019 3:29 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Calculating Acidity and Basicity Constants
- Replies: 1
- Views: 168
Calculating Acidity and Basicity Constants
Will we be required to know how to calculate pKa and pKb on the final? How do we do this?
- Thu Dec 05, 2019 2:12 pm
- Forum: Identifying Acidic & Basic Salts
- Topic: Salts as Acids and Bases
- Replies: 2
- Views: 195
Salts as Acids and Bases
How can we tell whether a salt is a strong conjugate acid or a strong conjugate base? How can we determine what the salt is a product of.
- Thu Dec 05, 2019 9:00 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Ionization Constants on test
- Replies: 1
- Views: 166
Ionization Constants on test
Will we be given ionization constants on the final? Are we able to calculate ionization constants or do they have to be given?
- Wed Dec 04, 2019 6:35 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: CO3^2- Resonance and Polydentate
- Replies: 2
- Views: 195
Re: CO3^2- Resonance and Polydentate
The terms monodentate/bidentate don't apply to a molecule like this, they only apply to coordination compounds (transition metal bonded to atom) I don’t think that’s correct, as this molecule is given in a homework problem, and the question asks to identify if it is polydentate. The answer is that ...
- Wed Dec 04, 2019 1:49 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: CO3^2- Resonance and Polydentate
- Replies: 2
- Views: 195
CO3^2- Resonance and Polydentate
Can someone explain to me the resonance structures that dictate CO3^2- as being either monodentate and bidentate? I understand why the compound can be bidentate, but I do not understand how it is monodentate.
- Wed Dec 04, 2019 11:15 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Videos on polydentate ligands?
- Replies: 2
- Views: 266
Videos on polydentate ligands?
Does anyone have any helpful videos that explains polydentate ligands? I'm pretty confused on this.
- Tue Dec 03, 2019 6:30 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Question 9C.5
- Replies: 1
- Views: 191
Question 9C.5
The question asks Which of the following ligands can be polydentate? If the ligand can be polydentate, give the maximum number of places on the ligand that can bind simultaneously to a single metal center: (a) HN(CH2CH2NH2)2 ; (b) CO32− ; c) H2O; (d) oxalate. How are we able to tell that a ligand wi...
- Tue Dec 03, 2019 4:17 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Calculating pH for weak Acids
- Replies: 3
- Views: 310
Calculating pH for weak Acids
Should we know how to calculate pH for weak acids? Or will we only be required to do this for strong acids?
- Mon Dec 02, 2019 7:48 pm
- Forum: Student Social/Study Group
- Topic: Review Session on Coordination Compounds
- Replies: 1
- Views: 222
Review Session on Coordination Compounds
Is there only one review session on Coordination Compounds? Do you think there would be any way that Lavelle would add one more on coordination compounds, in case we cannot go to the Wednesday session?
- Mon Dec 02, 2019 3:05 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Structure of Acids and Bases
- Replies: 1
- Views: 177
Structure of Acids and Bases
How do the structures of acids and bases differ from each other?
- Mon Dec 02, 2019 2:34 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Chemical properties of acids, bases and amphoteric compounds
- Replies: 2
- Views: 187
Chemical properties of acids, bases and amphoteric compounds
What are the specific chemical properties of acids, bases and amphoteric compounds?
- Sun Dec 01, 2019 4:06 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Oxidation Number
- Replies: 2
- Views: 286
Oxidation Number
What is an oxidation number? How do you calculate the oxidation number of an atom in a compound? Is there a particular set of rules we can follow to help determine oxidation number?
- Sat Nov 30, 2019 8:32 pm
- Forum: Biological Examples
- Topic: Coordination Compounds and Chemotherapy Drugs
- Replies: 5
- Views: 349
Coordination Compounds and Chemotherapy Drugs
Which coordination compounds did Dr. Lavelle give as examples of coordination compounds used as chemotherapy drugs?
- Fri Nov 29, 2019 3:53 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 2: Number of Hydrogen Bonding Sites Question
- Replies: 3
- Views: 339
Re: Test 2: Number of Hydrogen Bonding Sites Question
On my test, there was a caffeine molecule and students needed to identify hydrogen bonding sites. There were 6, 4 due to lone pairs 4 N atoms and 2 due to lone pairs on 2 O molecules. I have been hearing that DNA was used as an example for other tests, so you may want to double check with someone if...
- Fri Nov 29, 2019 3:51 pm
- Forum: Bronsted Acids & Bases
- Topic: Strong Acid vs. Weak Acid; Strong Base vs. Weak Base
- Replies: 1
- Views: 498
Strong Acid vs. Weak Acid; Strong Base vs. Weak Base
What is the difference between a strong acid and a weak acid? That is, what constitutes a strong acid? What is the rule for strong bases?
- Fri Nov 29, 2019 3:47 pm
- Forum: Bronsted Acids & Bases
- Topic: Bronsted vs. Lewis
- Replies: 5
- Views: 313
Bronsted vs. Lewis
Can someone please help me distinguish between Lewis Acids and Bases and Bronsted Acids and Bases?
- Fri Nov 29, 2019 3:43 pm
- Forum: Bronsted Acids & Bases
- Topic: Naming Acids
- Replies: 2
- Views: 218
Re: Naming Acids
Given that Dr. Lavelle assigned the problem and didn't omit this part, I would say know how to name acids and bases to be safe. However, definitely ask your TA as there isn't anything specific on naming acids or bases on Lavelle's test topics for Acids and Bases.
- Fri Nov 29, 2019 3:41 pm
- Forum: Student Social/Study Group
- Topic: Final Review Sessions
- Replies: 7
- Views: 531
Final Review Sessions
Has Dr. Lavelle put out information regarding final review sessions? Does anyone know what day Lyndon's session will be held?
- Wed Nov 20, 2019 7:47 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Hydrogen Bonding vs. Ion-Dipole
- Replies: 1
- Views: 149
Hydrogen Bonding vs. Ion-Dipole
Does hydrogen bonding have a greater magnitude than ion-dipole interactions? As in, which is stronger?
- Tue Nov 19, 2019 4:09 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: Magnitudes of Intermolecular Forces?
- Replies: 1
- Views: 138
Magnitudes of Intermolecular Forces?
According to Lavelle, what are the magnitudes of each intermolecular/interionic force?
- Tue Nov 19, 2019 3:43 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: 3F.1 C
- Replies: 3
- Views: 159
Re: 3F.1 C
Because I is larger than F, does molecular size trump intermolecular interaction when determining melting points?
- Tue Nov 19, 2019 3:40 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: 3F.1 C
- Replies: 3
- Views: 159
3F.1 C
Why does CHI3 have a higher melting point than CHF3? I would guess that dipoles are stronger in CHF3 due to F's high electronegativity, but this is not the case. Can someone please explain?
- Tue Nov 19, 2019 3:15 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: Are London Dispersion and Induced-Dipole-Induced-Dipole Interactions the same?
- Replies: 2
- Views: 83
Are London Dispersion and Induced-Dipole-Induced-Dipole Interactions the same?
Are these intermolecular interactions/forces the same? Is London Dispersion just another name for Induced-Dipole-Induced-Dipole interactions?
- Tue Nov 19, 2019 2:51 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: Differentiating between London Dispersion and Induced-Dipole-Induced-Dipole
- Replies: 2
- Views: 99
Differentiating between London Dispersion and Induced-Dipole-Induced-Dipole
How can we tell the difference between London Dispersion and Induced-Dipole-Induced-Dipole? How can we tell that a molecule has London Dispersion rather than Induced-Dipole-Induced-Dipole, and vice versa?
- Tue Nov 19, 2019 1:27 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Question 2F3 part b
- Replies: 3
- Views: 190
Question 2F3 part b
I am confused because the answer key for question 2F3 part b, it says "2 σ-bonds; 1 π-bond; there is also a resonance structure that includes 2 σ-bonds. 2 π-bonds." So, would this mean that we are required to find sigma and pi bonds for resonance structures as well?
- Tue Nov 19, 2019 11:44 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sigma and Pi Bonds and Resonance
- Replies: 3
- Views: 107
Re: Sigma and Pi Bonds and Resonance
In resonance structures, the number of sigma and pi bonds are not affected because resonance only affects the location of the electrons on the molecules. I am confused because the answer key for question 2F3 part b, it says "2 σ-bonds; 1 π-bond; there is also a resonance structure that include...
- Tue Nov 19, 2019 11:17 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sigma and Pi Bonds and Resonance
- Replies: 3
- Views: 107
Sigma and Pi Bonds and Resonance
Do we have to account for resonance when determining the number of sigma bonds and pi bonds in a molecule?
- Mon Nov 18, 2019 9:21 pm
- Forum: Dipole Moments
- Topic: Dipole-Dipole vs. Dipole-Induced
- Replies: 1
- Views: 177
Dipole-Dipole vs. Dipole-Induced
Can someone explain how to differentiate a molecule that has dipole-dipole interaction vs. dipole-induced interactions? I understand that dipole-induced interactions occur when an electric dipole and an instantaneous dipole induces a nonpolar molecule, but how can we identify that a molecule does in...
- Sun Nov 17, 2019 12:41 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Determining Polarity
- Replies: 3
- Views: 212
Determining Polarity
How do we determine the polarity of a molecule based on its Lewis Structure? Do we use formal charge and dipole moments?
- Sun Nov 17, 2019 12:39 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR
- Replies: 6
- Views: 347
VSEPR
I am a little confused as to what VSPER actually is and how it allows us to determine molecular shape.
- Sun Nov 17, 2019 12:38 pm
- Forum: Lewis Structures
- Topic: Drawing Lewis Structures (Multiple Atoms)
- Replies: 3
- Views: 164
Re: Drawing Lewis Structures (Multiple Atoms)
I am not sure if there are any specific tricks for doing this, but just remember that when choosing a central atom, choose the atom with the lowest electronegativity; the central atom would be carbon in this case. Count up all valence electrons, and draw atoms around central atoms. I would place the...
- Sun Nov 17, 2019 12:34 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Wed before Thanksgiving
- Replies: 3
- Views: 141
Re: Wed before Thanksgiving
Considering Lavelle hasn't mentioned anything about lecture being cancelled, I would count on attending class. Especially since in the beginning of the year he mentioned that we have Week 0 to account for the Thursday Friday we miss because of Thanksgiving, but this does not include Wednesday. I wou...
- Sun Nov 17, 2019 12:03 pm
- Forum: Dipole Moments
- Topic: ion-dipole moments
- Replies: 3
- Views: 138
Re: ion-dipole moments
Yes. This is because the charge of an ion-dipole moment is greater than dipole-dipole moments.
- Sun Nov 17, 2019 11:46 am
- Forum: Administrative Questions and Class Announcements
- Topic: Test 2
- Replies: 1
- Views: 183
Re: Test 2
I believe it will be more conceptual, as we haven't learned any new calculations since the midterm.
- Sun Nov 17, 2019 10:38 am
- Forum: Student Social/Study Group
- Topic: Test 2 Topics
- Replies: 3
- Views: 280
Test 2 Topics
Does anyone know if Lavelle will be posting Test Topics for test 2, as he did for test 1? If not, could anyone please explain what exactly will be on test 2? Thanks.
- Sun Nov 10, 2019 5:39 pm
- Forum: Electronegativity
- Topic: Electron Affinity and Electronegativity
- Replies: 7
- Views: 383
Re: Electron Affinity and Electronegativity
Electron affinity is the amount of energy released when an electron is added to an atom, or how much an “atom wants an electron.” Electronegativity is the level of pull an atom has an electron, in terms of pulling an electron towards it when in a covalent bond.
- Sun Nov 10, 2019 5:36 pm
- Forum: Student Social/Study Group
- Topic: Students in TA Section 4D
- Replies: 1
- Views: 97
Re: Students in TA Section 4D
I would assume that you would have to turn in both sets. Although I am not in your discussion, I would tell you to do so, considering that lavelle requires homework each week of the quarter.
- Sun Nov 10, 2019 5:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Workshop Sessions
- Replies: 1
- Views: 110
Workshop Sessions
Will Lyndon still be holding workshop sessions the remainder of the quarter?
- Sun Nov 10, 2019 5:31 pm
- Forum: Ionic & Covalent Bonds
- Topic: London Dispersion
- Replies: 13
- Views: 621
London Dispersion
What dictates London Dispersion? I’m unsure on this.
- Sun Nov 10, 2019 5:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Test 2
- Replies: 4
- Views: 199
Test 2
Does anyone know what topics test 2 will cover? I understand it isn’t cumulative, but I am just wondering if we can know in advanced what is covered?
- Tue Nov 05, 2019 7:23 pm
- Forum: General Science Questions
- Topic: Line Structures on the Midterm?
- Replies: 1
- Views: 120
Line Structures on the Midterm?
Will we be expected to how to draw line structures for organic compounds on the midterm?
- Sun Nov 03, 2019 6:21 pm
- Forum: Lewis Structures
- Topic: Question 2B.3 Part d
- Replies: 2
- Views: 80
Re: Question 2B.3 Part d
I meant to say for Bromine.
- Sun Nov 03, 2019 6:17 pm
- Forum: Lewis Structures
- Topic: Octet rule.
- Replies: 2
- Views: 108
Re: Octet rule.
P-block elements starting at row 3 and below can have an expanded octet, meaning they can have more than 8 electrons in their outer shell.
- Sun Nov 03, 2019 6:16 pm
- Forum: *Shrodinger Equation
- Topic: Hamiltonian
- Replies: 2
- Views: 272
Re: Hamiltonian
The Hamiltonian is an operator that acts on the wave function. When we multiply the hamiltonian and the wave function, we get energy times the wave function. The wave function squared however, is the probability of electron density, or the probability of finding an electron at a certain location in ...
- Sun Nov 03, 2019 6:11 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization Energy
- Replies: 2
- Views: 98
Re: Ionization Energy
Yes. Oxygen and Boron are two exceptions. This is because Oxygen has six valence electrons. In order to become more stable, oxygen would rather lose an electron in order to have a half shell. So, its ionization energy is actually lower than nitrogen. This is the same for Boron. It would like be more...
- Sun Nov 03, 2019 6:08 pm
- Forum: Octet Exceptions
- Topic: Biological Impacts of Radicals
- Replies: 4
- Views: 139
Re: Biological Impacts of Radicals
At the cellular level, radicals seek out and oxidize molecules in the cells so that they can become a pair. Scientists believe that radicals are a major cause of aging, as these free radicals cause damage to cells, proteins and DNA.
- Sun Nov 03, 2019 6:06 pm
- Forum: Student Social/Study Group
- Topic: Lyndon Workshop
- Replies: 1
- Views: 94
Re: Lyndon Workshop
He said that he will be having his regular workshop session Monday night from 6 to 8 at Covel. He said we will review and may go over some of the problems on the review sheet he made us once more.
- Sun Nov 03, 2019 6:04 pm
- Forum: Lewis Structures
- Topic: Question 2B.3 Part d
- Replies: 2
- Views: 80
Question 2B.3 Part d
The question asks for you to draw the Lewis Structure for BrF3. Does anyone know why in the answer, for one of the Fluorine atoms, there are only six electrons instead of 8? I understand that there is an expanded octet for Boron, but I am not quite sure why this one atom of fluorine has six electron...
- Sun Oct 27, 2019 6:56 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Thanksgiving
- Replies: 3
- Views: 107
Re: Thanksgiving
We will. Dr. Lavelle explained on our first lecture day that we have class Thursday and Friday Week 0 in order to account for the days we will miss due to Thanksgiving. Because Week 0 does not include Wednesday, I am assuming this means that class will still be held.
- Sun Oct 27, 2019 6:54 pm
- Forum: Student Social/Study Group
- Topic: Midterm
- Replies: 7
- Views: 438
Midterm
Does anyone know the general format of the midterm? As in, how many questions there will be and how many questions there will be on each topic we have gone over? Thanks.
- Sun Oct 27, 2019 6:47 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Useful YouTube videos?
- Replies: 6
- Views: 232
Re: Useful YouTube videos?
Checkout Bozeman Science and Professor Dave Explains. I have found their videos especially helpful in explaining certain aspects of Quantum Mechanics.
- Sun Oct 27, 2019 6:46 pm
- Forum: *Shrodinger Equation
- Topic: schrodinger equation
- Replies: 2
- Views: 306
Re: schrodinger equation
I would check out these two videos from Bozeman Science.
https://www.youtube.com/watch?v=accyCUzasa0
https://www.youtube.com/watch?v=Xh6NRenkdRk
I would also check out this video:
https://www.youtube.com/watch?v=O6g-7rUgrdg
Hope this helps.
https://www.youtube.com/watch?v=accyCUzasa0
https://www.youtube.com/watch?v=Xh6NRenkdRk
I would also check out this video:
https://www.youtube.com/watch?v=O6g-7rUgrdg
Hope this helps.
- Tue Oct 22, 2019 5:25 pm
- Forum: Student Social/Study Group
- Topic: Video Module For New Material
- Replies: 4
- Views: 205
Video Module For New Material
Does anyone know when Dr. Lavelle will post his video modules for many electron atoms and electron energy shells?
- Sun Oct 20, 2019 7:44 pm
- Forum: Student Social/Study Group
- Topic: Midterm Review Material
- Replies: 5
- Views: 416
Midterm Review Material
I know that the midterm is still about two and a half weeks away, but I was wondering if anyone had any suggestions as to what are good outside resources to utilize when studying for the test. I was also wondering if anyone had any study tips?
- Sun Oct 20, 2019 7:38 pm
- Forum: General Science Questions
- Topic: Sapling Learning
- Replies: 2
- Views: 115
Re: Sapling Learning
Dr. Lavelle sent his classes an email stating that he created multiple additional assignments and learning objectives for those who need additional assistance.It looks like on the website if you go to the section "Activities and Due Dates" there are many practice problems that you can choo...
- Mon Oct 14, 2019 3:16 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Where to find homework problems
- Replies: 3
- Views: 113
Re: Where to find homework problems
I have realized I am looking at the wrong section! Thank you for your help!
- Mon Oct 14, 2019 3:15 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Where to find homework problems
- Replies: 3
- Views: 113
Re: Where to find homework problems
I purchased the 7th Edition via Sapling. Under the exercise section they are in the format I described above, but when I go to the "Odd-number Answers" section they are posted as Lavelle posted them. Do you know if I am looking at the wrong section for questions?
- Mon Oct 14, 2019 3:07 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Where to find homework problems
- Replies: 3
- Views: 113
Where to find homework problems
I am having trouble locating problems labeled under "1A" and "1B". Rather, I just get problems under certain sections, but the numbers are labeled continuously, as in 1.1, 1.2,1.3, and so on. Can anyone help me with this?
- Fri Oct 11, 2019 11:27 am
- Forum: Student Social/Study Group
- Topic: Weekly Posts
- Replies: 6
- Views: 251
Re: Weekly Posts
They are due by midnight on Sundays!
- Fri Oct 11, 2019 11:24 am
- Forum: Student Social/Study Group
- Topic: Peer Learning Sessions
- Replies: 3
- Views: 206
Peer Learning Sessions
Does anyone know if the Peer Learning Sessions are available to all students? If not, does anyone know how to become a part of those sessions?
- Fri Oct 11, 2019 11:19 am
- Forum: Administrative Questions and Class Announcements
- Topic: Extra help
- Replies: 8
- Views: 430
Re: Extra help
In high school, my Chemistry teacher would make us watch Bozeman Science videos to help us with harder chemistry problems. Also if you're looking for a tutor, I know that Alpha Chi Epsilon is a chemistry based fraternity that has free chemistry tutoring for students at UCLA.
- Fri Oct 11, 2019 11:15 am
- Forum: Properties of Electrons
- Topic: Multi-Electron Systems
- Replies: 4
- Views: 174
Re: Multi-Electron Systems
I am guessing because multi-electron systems are more complex, then you would need a more sophisticated model in order to model them effectively, rather than the simple model discussed in class. I feel that the complexity is the factor.
- Fri Oct 11, 2019 11:09 am
- Forum: Properties of Light
- Topic: Equations for quantum mechanics
- Replies: 3
- Views: 129
Equations for quantum mechanics
Hi, can someone please help me to distinguish when to use certain equations for the certain aspects of quantum mechanics? As in, which equations to use for energy, electrons and light, and when we cannot interchange these equations? Thank you.
- Fri Oct 11, 2019 11:06 am
- Forum: Administrative Questions and Class Announcements
- Topic: Posting
- Replies: 3
- Views: 230
Re: Posting
The password for Lavelle's website is LL14A19! And for posting, I am pretty sure what you do is go to the topic of interest, such as going to the Fundamentals Topic, and then you can make a new post by clicking "new post." I think that is how you can ask a question under that specific topic.
- Wed Oct 02, 2019 2:45 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Solubility Rules Memorization ?
- Replies: 3
- Views: 263
Re: Solubility Rules Memorization ?
So far, in lecture, discussion and in homework, the state of matter has been given for the molecular compounds we have had to balance in chemical equations, either directly or through context clues in the problem itself. That being said, I would say use these context clues (say, if the problem said ...
- Wed Oct 02, 2019 2:23 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Formula Units
- Replies: 6
- Views: 466
Re: Formula Units
According to the textbook glossary, formula units are the group of ions that matches the formula of the smallest unit of an ionic compound. In terms of an example, the book provides the following: the formula units for sodium chloride, or NaCl, are the one cation of Na+ and the one of anion Cl-. So ...
- Wed Oct 02, 2019 2:19 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Molar mass vs. Molecular Weight
- Replies: 5
- Views: 1192
Re: Molar mass vs. Molecular Weight
The textbook defines molecular weight as the numerical value of the molar mass of a molecular compound. It defines molar mass three ways: The mass per mole of atoms of an element.(2) The mass per mole of molecules of a molecular compound. (3) The mass per mole of formula units of an ionic compound. ...
- Wed Oct 02, 2019 2:08 pm
- Forum: SI Units, Unit Conversions
- Topic: Question about final answers on tests
- Replies: 8
- Views: 466
Re: Question about final answers on tests
I would assume that because Dr. Lavelle has been using this state notation in his notes and it is present in homework problems, he would want us to do the same on homework and tests. From experience in high school chemistry classes, it was required for us to do this in order to receive full credit o...
- Wed Oct 02, 2019 2:01 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Please clarify what M means
- Replies: 5
- Views: 300
Re: Please clarify what M means
M stands for molarity. Molarity is defined as the number of moles of solute per liter of solution. So, I would say that it is the latter choice, in which units are mol/L.