Search found 63 matches
- Tue Jan 12, 2021 1:44 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Left vs. Right
- Replies: 29
- Views: 90
Re: Left vs. Right
They mean the same thing.
- Tue Jan 12, 2021 1:44 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kc and Kp
- Replies: 5
- Views: 22
Re: Kc and Kp
The question will usually state to find a certain K value, whether it is the concentration or the partial pressure.
- Tue Jan 12, 2021 1:43 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Kw
- Replies: 8
- Views: 56
Re: Kw
It is considered as a weak acid and base.
- Tue Jan 12, 2021 1:42 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Simplifying Expressions: K<10^?
- Replies: 6
- Views: 42
Re: Simplifying Expressions: K<10^?
If he K value is less than 10^-3, then it would be too small to have an effect in the reaction.
- Tue Jan 12, 2021 1:41 pm
- Forum: Student Social/Study Group
- Topic: New Year Resolutions?
- Replies: 51
- Views: 158
Re: New Year Resolutions?
I would like to get better at time management and better scheduling.
- Thu Jan 07, 2021 12:32 pm
- Forum: General Science Questions
- Topic: mole vs. M
- Replies: 16
- Views: 99
Re: mole vs. M
Yes M is mol * L^-1
- Mon Jan 04, 2021 12:03 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Reaction Direction
- Replies: 19
- Views: 314
Re: Reaction Direction
If the K value is a huge number, then it is towards products but if it is a small number then it's towards reactants.
- Mon Jan 04, 2021 12:02 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: KC vs KP [ENDORSED]
- Replies: 6
- Views: 44
Re: KC vs KP [ENDORSED]
Usually the question should mention what to find but it would depend on the values given.
- Mon Jan 04, 2021 12:01 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Pure Substance [ENDORSED]
- Replies: 7
- Views: 50
Re: Pure Substance [ENDORSED]
A pure substance is something that does not change concentration in the reaction in either the forward o reverse process and therefore it is not included in the k constant.
- Mon Jan 04, 2021 11:59 am
- Forum: Administrative Questions and Class Announcements
- Topic: Can I do hw if I don't have sapling yet?
- Replies: 16
- Views: 101
Re: Can I do hw if I don't have sapling yet?
Our sapling homework is not due until the end of week 2 and you should be able to get a free 14 day trial with sapling.
- Mon Dec 07, 2020 4:21 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Dentisisty
- Replies: 1
- Views: 8
Re: Dentisisty
The density of the compound is usually given in the problem.
- Mon Dec 07, 2020 4:20 pm
- Forum: Student Social/Study Group
- Topic: Plans for Relaxing After Finals
- Replies: 97
- Views: 443
Re: Plans for Relaxing After Finals
I plan on going home and spending time with family.
- Mon Dec 07, 2020 4:19 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: 6C.17 Textbook
- Replies: 4
- Views: 40
Re: 6C.17 Textbook
The larger the kb value the stronger the base is
- Mon Dec 07, 2020 4:18 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam Proctoring Clarification
- Replies: 15
- Views: 152
Re: Final Exam Proctoring Clarification
We most likely will have to join our TA links to the zoom
- Mon Dec 07, 2020 4:16 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Energy of orbitals
- Replies: 2
- Views: 34
Re: Energy of orbitals
I believe they would have to same energy since they fall in the same subshell.
- Wed Dec 02, 2020 1:52 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: 4 ligands shape
- Replies: 5
- Views: 63
Re: 4 ligands shape
See saw is very uncommon of a shape to make and thus square planar and tetrahedral were mentioned.
- Wed Dec 02, 2020 1:51 pm
- Forum: Naming
- Topic: Oxidation State
- Replies: 16
- Views: 72
Re: Oxidation State
The oxidation state is the charge of the element.
- Wed Dec 02, 2020 1:50 pm
- Forum: Bronsted Acids & Bases
- Topic: Strong Acid vs. Weak Acid
- Replies: 7
- Views: 59
Re: Strong Acid vs. Weak Acid
Best way is to memorize the strong bases and acids.
- Wed Dec 02, 2020 1:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem 14A Final
- Replies: 21
- Views: 171
Re: Chem 14A Final
I am pretty sure the final will cover all topics discussed throughout the quarter
- Wed Dec 02, 2020 1:48 pm
- Forum: Hybridization
- Topic: Pi Bonds Cannot Rotate
- Replies: 23
- Views: 156
Re: Pi Bonds Cannot Rotate
Pi bonds cannot rotate because the p orbitals overlap and cause a double bond which is more stronger and thus it cannot rotate
- Wed Nov 25, 2020 6:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Single, Double, Triple Bonds
- Replies: 3
- Views: 21
Re: Single, Double, Triple Bonds
What Professor Lavelle means by that is that the the bonds are all considered one region of density in the VSEPR model because the bonds tend to just combine into a larger area of electron density.
- Wed Nov 25, 2020 5:59 pm
- Forum: Naming
- Topic: Ethylene Diamine Tetra Acetate
- Replies: 6
- Views: 29
Re: Ethylene Diamine Tetra Acetate
We will probably have to know it later on in the next week, but as of right now we have not gone over it yet.
- Wed Nov 25, 2020 5:58 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination number
- Replies: 9
- Views: 68
Re: Coordination number
Yes I believe you do count the double bond as 2 bonds
- Wed Nov 25, 2020 5:56 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: t shape
- Replies: 4
- Views: 51
Re: t shape
The shape will always be T shaped
- Wed Nov 25, 2020 5:55 pm
- Forum: Hybridization
- Topic: Hybridization with double bonds
- Replies: 4
- Views: 30
Re: Hybridization with double bonds
It would be considered as a single region of electron density and thus it will be sp2
- Mon Nov 16, 2020 5:19 pm
- Forum: Electronegativity
- Topic: polar vs nonpolar
- Replies: 19
- Views: 71
Re: polar vs nonpolar
In most books, if the polarity difference is about 0.5 or more then it is said to be polar.
- Mon Nov 16, 2020 5:18 pm
- Forum: Electronegativity
- Topic: Partial vs Formal charge
- Replies: 8
- Views: 45
Re: Partial vs Formal charge
Partial charges tend to be dipoles and formal charges are the charges on an atom
- Mon Nov 16, 2020 5:17 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Updating Respondus Lockdown Browser
- Replies: 8
- Views: 213
Re: Updating Respondus Lockdown Browser
Click on the Respondus app and then click on the globe and check for updates
- Mon Nov 16, 2020 5:15 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm 2 Question
- Replies: 12
- Views: 147
Re: Midterm 2 Question
Your second device is the one that should have zoom enabled and camera facing the desk.
- Mon Nov 16, 2020 5:13 pm
- Forum: Student Social/Study Group
- Topic: Midterm 2
- Replies: 31
- Views: 296
Re: Midterm 2
We are going to be tested on the last 8 bullet notes and the new material in Outline 3
- Mon Nov 16, 2020 5:13 pm
- Forum: Electronegativity
- Topic: Tips on remembering trend
- Replies: 5
- Views: 39
Re: Tips on remembering trend
Best way to memorize is to consider the atom as the periods go across and how they get bigger and when they go down a group. Usually bigger atoms tend to have the smaller ionization energies
- Mon Nov 09, 2020 3:20 pm
- Forum: Student Social/Study Group
- Topic: Chemistry Among Us
- Replies: 43
- Views: 419
Re: Chemistry Among Us
I would follow green
- Mon Nov 09, 2020 3:18 pm
- Forum: Sigma & Pi Bonds
- Topic: Sigma and Pi bonds
- Replies: 9
- Views: 66
Re: Sigma and Pi bonds
Sigma and pi bonds are the bonds on the atom . Sigma is one and pi is a double bond. We have not covered this topic yet.
- Mon Nov 09, 2020 3:16 pm
- Forum: Lewis Structures
- Topic: Lewis Dot Structure
- Replies: 11
- Views: 77
Re: Lewis Dot Structure
When it's for a single atom, you just place the electrons in the four cardinal directions.
- Mon Nov 09, 2020 3:15 pm
- Forum: Lewis Structures
- Topic: Lewis Dot Structure
- Replies: 11
- Views: 77
Re: Lewis Dot Structure
When it's for a single atom, you just place the electrons in the four cardinal directions.
- Mon Nov 09, 2020 3:07 pm
- Forum: Student Social/Study Group
- Topic: Mid-quarter Check in
- Replies: 67
- Views: 271
Re: Mid-quarter Check in
School has been going pretty good. Nothing too difficult and the class work is pretty sustainable.
- Mon Nov 09, 2020 3:05 pm
- Forum: Ionic & Covalent Bonds
- Topic: Textbook 2D.3c
- Replies: 3
- Views: 15
Re: Textbook 2D.3c
Nonmetals tend to bond with covalent bonding since they do not have ionic charges.
- Mon Nov 02, 2020 4:53 pm
- Forum: Lewis Structures
- Topic: Octet Rule or Formal Charge
- Replies: 2
- Views: 32
Re: Octet Rule or Formal Charge
The octet rule should be prioritized first and then the formal charges.
- Mon Nov 02, 2020 4:52 pm
- Forum: Student Social/Study Group
- Topic: Participation
- Replies: 45
- Views: 338
Re: Participation
You should have about 5 posts per week with a total of 50 posts by the end of the quarter
- Mon Nov 02, 2020 4:51 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Why is the 4s state filled before the 3d state?
- Replies: 14
- Views: 122
Re: Why is the 4s state filled before the 3d state?
The 4s shell has a lower energy level than 3d, which is why the 4s shell fills first
- Mon Nov 02, 2020 4:41 pm
- Forum: Student Social/Study Group
- Topic: Midterm 2
- Replies: 31
- Views: 296
Re: Midterm 2
It incluudes everything left over in the Second Module and everything we learned from now on
- Mon Nov 02, 2020 4:09 pm
- Forum: General Science Questions
- Topic: Midterm Grades
- Replies: 30
- Views: 344
Re: Midterm Grades
I believe Lavelle will post the midterm grades by next week.
- Thu Oct 29, 2020 9:07 am
- Forum: Empirical & Molecular Formulas
- Topic: Review for Midterm
- Replies: 11
- Views: 136
Re: Review for Midterm
I believe we would be required to know basic molecular compounds.
- Thu Oct 29, 2020 9:06 am
- Forum: Properties of Light
- Topic: Midterm Question
- Replies: 11
- Views: 166
Re: Midterm Question
It will cover everything in the Outline 1 on Fundamentals and Outline 2 up to Focus D
- Thu Oct 29, 2020 9:04 am
- Forum: Einstein Equation
- Topic: E=pc vs E=hv
- Replies: 15
- Views: 144
Re: E=pc vs E=hv
E=pc is used when the mass or velocity of the electron is given in the problem, while the E=hv is used when frequency or wavelength is given.
- Thu Oct 29, 2020 9:03 am
- Forum: Trends in The Periodic Table
- Topic: Electron Affinity
- Replies: 10
- Views: 69
Re: Electron Affinity
A high electron affinity means that the energy released will be high when an electron is accepted and is usually high for cations
- Thu Oct 29, 2020 9:01 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Writing Electron Configurations [ENDORSED]
- Replies: 3
- Views: 36
Re: Writing Electron Configurations [ENDORSED]
You are allowed to write both, but the 2px1 and 2py1 is to tell you which axis they fall on
- Wed Oct 21, 2020 12:39 pm
- Forum: *Shrodinger Equation
- Topic: Schrodinger for exam
- Replies: 20
- Views: 445
Re: Schrodinger for exam
Schrodinger may be referenced, but I do not think it'll be on the exam too much.
- Wed Oct 21, 2020 12:38 pm
- Forum: Properties of Light
- Topic: Sapling Q 11,13,15,16,17,18
- Replies: 2
- Views: 44
Re: Sapling Q 11,13,15,16,17,18
Contact your TA as he or she may know most likely.
- Wed Oct 21, 2020 12:37 pm
- Forum: Limiting Reactant Calculations
- Topic: Theoretical Yield
- Replies: 12
- Views: 97
Re: Theoretical Yield
Theoretical yield should usually be given in terms of grams.
- Wed Oct 21, 2020 12:36 pm
- Forum: Limiting Reactant Calculations
- Topic: Theoretical Yield
- Replies: 12
- Views: 97
Re: Theoretical Yield
Theoretical yield should usually be given in terms of grams.
- Wed Oct 21, 2020 12:35 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Sapling Homework Order
- Replies: 3
- Views: 46
Re: Sapling Homework Order
They are still in the order that Professor Lavelle is lecturing. He stated that in the email.
- Wed Oct 21, 2020 12:32 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: 10^-15 Question
- Replies: 3
- Views: 45
Re: 10^-15 Question
It is most likely to just be based on our current technology and how far we are able to measure the wavelength.
- Fri Oct 16, 2020 4:56 pm
- Forum: Significant Figures
- Topic: SIG FIGS
- Replies: 13
- Views: 112
Re: SIG FIGS
Questions tend to not tell you the number of sig figs to use, but will give you some number in the problem which is what you should base your sig fig off of.
- Wed Oct 14, 2020 1:10 pm
- Forum: Properties of Electrons
- Topic: Lyman vs. Balmer series
- Replies: 20
- Views: 164
Re: Lyman vs. Balmer series
Balmer is in the visible light region, while Lymann series is in the UV light region.
- Wed Oct 14, 2020 1:09 pm
- Forum: Significant Figures
- Topic: Sig Fig Process
- Replies: 13
- Views: 111
Re: Sig Fig Process
Try not to round off your numbers until you get the final answer.
- Wed Oct 14, 2020 1:08 pm
- Forum: Properties of Light
- Topic: Memorization of Increasing Energy
- Replies: 4
- Views: 57
Re: Memorization of Increasing Energy
I think you should have an understanding of the levels of the light, but I do not think we will be required to memorize the order of it.
- Wed Oct 14, 2020 1:07 pm
- Forum: SI Units, Unit Conversions
- Topic: SI Units
- Replies: 13
- Views: 125
Re: SI Units
There shouldn't be a unit to use unless stated in the problem/
- Wed Oct 14, 2020 1:06 pm
- Forum: Einstein Equation
- Topic: m vs nm
- Replies: 66
- Views: 433
Re: m vs nm
I do not think there is a specific unit to use unless it is stated in the question. As long as the conversion from m to nm is correct, you should be fine. :)
- Tue Oct 06, 2020 7:06 pm
- Forum: SI Units, Unit Conversions
- Topic: Grams to Moles of Oxygen Gas
- Replies: 7
- Views: 50
Re: Grams to Moles of Oxygen Gas
You should use the molar mass of O2 because it is the molecule listed in grams, not O because the molar masses are different.
- Tue Oct 06, 2020 7:04 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Posting during the weekends
- Replies: 7
- Views: 63
Re: Posting during the weekends
I believe you have to post 5 times a week, but you have 5 days to do so. I am not sure though .
- Mon Oct 05, 2020 5:28 pm
- Forum: SI Units, Unit Conversions
- Topic: The use of (__ mole Rxn) as a conversion method in stoichiometry
- Replies: 4
- Views: 68
Re: The use of (__ mole Rxn) as a conversion method in stoichiometry
The use of (___ mol rxn) is to show how much product is created as a result of an experiment. In the example you had written, the goal was to find out what is the mol of product produced and you use the mole to mole ratio in the equation to solve for that, which is why you wrote (1 mole Rxn/ 3 mol O...
- Mon Oct 05, 2020 5:25 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Mol VS Mole
- Replies: 17
- Views: 213
Re: Mol VS Mole
Mole and mol are indeed the same exact thing. mol is just the way most people write the word out during chemical equations and problems.