## 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

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

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
Replies: 30
Views: 344

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.