Search found 100 matches

by Ava Nickman
Thu Feb 25, 2021 8:34 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Ranking Species according to standard potentials
Replies: 2
Views: 9

Re: Ranking Species according to standard potentials

the larger the negativity, the more oxidized the species and thus it is a better reducing agent
by Ava Nickman
Thu Feb 25, 2021 8:32 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Salt Bridge
Replies: 30
Views: 71

Re: Salt Bridge

creates neutrality!!!
by Ava Nickman
Thu Feb 25, 2021 8:32 pm
Forum: Balancing Redox Reactions
Topic: E naught
Replies: 15
Views: 35

Re: E naught

it is because E naught is an intensive property I think
by Ava Nickman
Thu Feb 25, 2021 8:29 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cathode vs. Anode
Replies: 8
Views: 45

Re: Cathode vs. Anode

it would depend on which side the the run is being oxidized and which side is being reduced
by Ava Nickman
Thu Feb 25, 2021 8:28 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: dilutions and Ecell
Replies: 16
Views: 222

Re: dilutions and Ecell

dilution decreases cell potential I am pretty sure
by Ava Nickman
Thu Feb 25, 2021 8:27 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: n in NFE
Replies: 37
Views: 381

Re: n in NFE

the value of n
by Ava Nickman
Thu Feb 25, 2021 8:26 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Eºcell
Replies: 11
Views: 35

Re: Eºcell

yup! you are right
by Ava Nickman
Thu Feb 25, 2021 8:25 pm
Forum: Balancing Redox Reactions
Topic: sapling 7/8 number 3
Replies: 4
Views: 27

Re: sapling 7/8 number 3

it just means hydroxide ions and "spectator" ions are present in solution
by Ava Nickman
Thu Feb 25, 2021 8:24 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Battery
Replies: 19
Views: 238

Re: Battery

yes that is right!
by Ava Nickman
Thu Feb 25, 2021 8:23 pm
Forum: Administrative Questions and Class Announcements
Topic: When is Sapling HW due?
Replies: 22
Views: 68

Re: When is Sapling HW due?

It is due this Sunday at 11:58pm
by Ava Nickman
Thu Feb 25, 2021 8:23 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Units for delta G
Replies: 31
Views: 351

Re: Units for delta G

units are kJ
by Ava Nickman
Thu Feb 25, 2021 8:22 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Concentration Cell [ENDORSED]
Replies: 6
Views: 38

Re: Concentration Cell [ENDORSED]

Because it would occur on the side with the lower concentration of cations
by Ava Nickman
Thu Feb 25, 2021 8:21 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: G from K
Replies: 9
Views: 32

Re: G from K

If K >1, E∘ will be positive and ΔG∘ will be negative. If K < 1, E∘ will be negative and ΔG∘ will be positive. If K = 1, both values will be 0.
by Ava Nickman
Wed Feb 17, 2021 4:03 pm
Forum: Administrative Questions and Class Announcements
Topic: MIDTERM 2
Replies: 9
Views: 84

MIDTERM 2

Does anyone know which lectures specifically will be on Midterm 2?
by Ava Nickman
Wed Feb 17, 2021 3:46 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Meaning of K
Replies: 47
Views: 95

Re: Meaning of K

Yup! equilibrium constant or I guess Kelvin... but the indication should be clear in the question
by Ava Nickman
Wed Feb 17, 2021 3:45 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: qrev
Replies: 25
Views: 97

Re: qrev

heat generation and transfer in a reversible rxn
by Ava Nickman
Wed Feb 17, 2021 3:44 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Bomb calorimeter
Replies: 8
Views: 23

Re: Bomb calorimeter

the bomb calorimeter is specific to maintaining the volume of gas inside
by Ava Nickman
Wed Feb 17, 2021 3:41 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Delta H and Delta S both positive
Replies: 26
Views: 69

Re: Delta H and Delta S both positive

spontaneous at high temperatures
by Ava Nickman
Tue Feb 09, 2021 5:07 pm
Forum: Ideal Gases
Topic: Chem BL
Replies: 100
Views: 444

Re: Chem BL

I am going to take BL alone next quarter and then start the 7A series
by Ava Nickman
Tue Feb 09, 2021 5:05 pm
Forum: Student Social/Study Group
Topic: Finals
Replies: 23
Views: 64

Re: Finals

honestly last quarter the midterms and the final felt relatively equal in the difficulty of the questions. The only difference is the amount of content covered
by Ava Nickman
Tue Feb 09, 2021 5:04 pm
Forum: Student Social/Study Group
Topic: When is Midterm 2?
Replies: 4
Views: 20

Re: When is Midterm 2?

Im assuming it will be week 7 or 8 but not sure
by Ava Nickman
Tue Feb 09, 2021 5:03 pm
Forum: Student Social/Study Group
Topic: Test curve?
Replies: 27
Views: 133

Re: Test curve?

People do really well on the exams so I don't think a curve will happen
by Ava Nickman
Tue Feb 09, 2021 5:02 pm
Forum: Calculating Work of Expansion
Topic: Work: Compression and Expansion
Replies: 6
Views: 34

Re: Work: Compression and Expansion

yes that's correct!
by Ava Nickman
Thu Feb 04, 2021 11:15 am
Forum: Administrative Questions and Class Announcements
Topic: Chem Community Grade Error
Replies: 15
Views: 102

Re: Chem Community Grade Error

Lavelle included this week. But don't worry, once you do them it will be updated. Mine were off all of last quarter but I still got full credit because I had 50 by the end
by Ava Nickman
Thu Feb 04, 2021 11:14 am
Forum: General Science Questions
Topic: Tips
Replies: 24
Views: 78

Re: Tips

truly doing as much practice as you can really helps
by Ava Nickman
Thu Feb 04, 2021 11:13 am
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: External Pressure
Replies: 32
Views: 63

Re: External Pressure

I think its the pressure pushing down on the piston
by Ava Nickman
Thu Feb 04, 2021 11:12 am
Forum: Administrative Questions and Class Announcements
Topic: Chemistry Community Points
Replies: 11
Views: 50

Re: Chemistry Community Points

Hi! I had this issue last quarter. As long as you have 50 by the end of the quarter you will receive full credit. He will update it
by Ava Nickman
Thu Jan 28, 2021 8:18 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Enthalpies
Replies: 2
Views: 18

Re: Enthalpies

I was wondering the same thing and I think yes... it will probably be included in the questions
by Ava Nickman
Thu Jan 28, 2021 8:16 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Water as a Reactant
Replies: 9
Views: 36

Re: Water as a Reactant

yes disregard H20 I think but usually it will tell you the state of substance
by Ava Nickman
Thu Jan 28, 2021 8:15 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: How to tell if products or reactants is more stable
Replies: 3
Views: 18

Re: How to tell if products or reactants is more stable

When k is big, the products are favored and when k is small the reactant is favored
by Ava Nickman
Sat Jan 23, 2021 8:53 pm
Forum: Phase Changes & Related Calculations
Topic: Constant Temperature
Replies: 20
Views: 70

Re: Constant Temperature

yup! that's correct
by Ava Nickman
Sat Jan 23, 2021 8:53 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Standard State
Replies: 11
Views: 67

Re: Standard State

the state is 25 degrees celsius with a 1 atm pressure
by Ava Nickman
Sat Jan 23, 2021 8:52 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Solids in Ice Tables
Replies: 11
Views: 50

Re: Solids in Ice Tables

solids are not included!
by Ava Nickman
Sat Jan 23, 2021 8:51 pm
Forum: Phase Changes & Related Calculations
Topic: H and q
Replies: 47
Views: 178

Re: H and q

h is enthalpy and q is heat
by Ava Nickman
Sat Jan 23, 2021 8:50 pm
Forum: Student Social/Study Group
Topic: Midterm Study Tips
Replies: 41
Views: 154

Re: Midterm Study Tips

the review sessions are super helpful!
by Ava Nickman
Wed Jan 13, 2021 3:11 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Change in K (P&T)
Replies: 9
Views: 58

Re: Change in K (P&T)

I believe only temperature can change k
by Ava Nickman
Wed Jan 13, 2021 3:10 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Left vs. Right
Replies: 29
Views: 128

Re: Left vs. Right

they mean the same thing
by Ava Nickman
Wed Jan 13, 2021 3:09 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: q vs k
Replies: 62
Views: 222

Re: q vs k

yes k and q are the same but k represents the ratio at equilibrium and and q represents other points in the reaction
by Ava Nickman
Wed Jan 13, 2021 3:06 pm
Forum: Phase Changes & Related Calculations
Topic: lecture 5 question
Replies: 9
Views: 110

Re: lecture 5 question

yes that's correct
by Ava Nickman
Wed Jan 13, 2021 3:06 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Difference between kA and kB
Replies: 8
Views: 54

Re: Difference between kA and kB

Ka is for acids and Kb is for bases
by Ava Nickman
Sat Jan 09, 2021 3:50 pm
Forum: Ideal Gases
Topic: Kc vs Kp
Replies: 109
Views: 999

Re: Kc vs Kp

If the question does not specifically indicate which K is wants, look at the units given. If they are pressure units like bar, you are finding Kp... if not, find Kc
by Ava Nickman
Sat Jan 09, 2021 3:48 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: very large K
Replies: 6
Views: 50

Re: very large K

yes I think you are correct about that
by Ava Nickman
Sat Jan 09, 2021 3:48 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: terminology
Replies: 11
Views: 86

Re: terminology

If the reaction favors the right/left, that means the reaction is moving towards that side of the reaction and creating more of it
by Ava Nickman
Sat Jan 09, 2021 3:47 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K vs. Q
Replies: 53
Views: 210

Re: K vs. Q

yup! that's correct
by Ava Nickman
Sat Dec 12, 2020 9:45 am
Forum: General Science Questions
Topic: Lavelle Website Password
Replies: 1
Views: 26

Lavelle Website Password

Does anyone know the password to the website for 14A? I got logged out and I can't find it anywhere
by Ava Nickman
Sun Dec 06, 2020 5:13 pm
Forum: Calculating the pH of Salt Solutions
Topic: pH formula?
Replies: 46
Views: 969

Re: pH formula?

pH= -log[H+]
pH= 14-pOH
pH= 14 - (-log[OH-])

it depends on what you are given
by Ava Nickman
Sun Dec 06, 2020 5:11 pm
Forum: Administrative Questions and Class Announcements
Topic: CCLE fixed?
Replies: 19
Views: 126

Re: CCLE fixed?

Thats super strange mine is working as usual. Not sure...
by Ava Nickman
Sun Dec 06, 2020 5:10 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: Equilibrium sign
Replies: 9
Views: 373

Re: Equilibrium sign

No the dissociation is complete and the equilibrium sign does not apply
by Ava Nickman
Sun Dec 06, 2020 5:09 pm
Forum: Bronsted Acids & Bases
Topic: Proton Donor/Acceptor
Replies: 2
Views: 10

Re: Proton Donor/Acceptor

Yup! You got it
by Ava Nickman
Sun Dec 06, 2020 4:59 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Negative pH of acid
Replies: 16
Views: 85

Re: Negative pH of acid

I don't believe the pH can drop below 0 given that the scale is 0-14.
by Ava Nickman
Sun Dec 06, 2020 4:57 pm
Forum: Lewis Structures
Topic: Most Stable Structure
Replies: 23
Views: 159

Re: Most Stable Structure

You need to calculate the formal charge of each structure and evaluate based off of that
by Ava Nickman
Sun Dec 06, 2020 4:56 pm
Forum: Naming
Topic: Naming Coordination Compounds
Replies: 9
Views: 77

Re: Naming Coordination Compounds

when the complex has a negative charge
by Ava Nickman
Sun Dec 06, 2020 4:55 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Memorization for final
Replies: 9
Views: 79

Re: Memorization for final

^^ the only thing im aware we need to memorize is the naming of formulas, strong acids, strong bases, the light spectrum, and periodic trends but I am sure there is more
by Ava Nickman
Sun Dec 06, 2020 4:54 pm
Forum: Conjugate Acids & Bases
Topic: Conjugate acids vs conjugate base
Replies: 12
Views: 79

Re: Conjugate acids vs conjugate base

The conjugate acid has an addition H+ while the conjugate base takes away an H+
by Ava Nickman
Sun Dec 06, 2020 4:53 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Dentates
Replies: 7
Views: 90

Re: Dentates

By counting the number of lone pairs
by Ava Nickman
Fri Nov 27, 2020 10:44 am
Forum: Hybridization
Topic: SeF3+
Replies: 5
Views: 3490

Re: SeF3+

Helena Xu 1I wrote:
SebastianCastellanos2L wrote:Would the hybridization scheme then be sp3?


Yes, because there are four regions of electron density, which means four hybrid orbitals are needed (one s-orbital and three p-orbitals).



Can someone explain how to find the hybridization scheme? I don't get it
by Ava Nickman
Fri Nov 27, 2020 10:41 am
Forum: Resonance Structures
Topic: Resonance Structures and Energy
Replies: 21
Views: 137

Re: Resonance Structures and Energy

Yes! that's correct
by Ava Nickman
Fri Nov 27, 2020 10:40 am
Forum: General Science Questions
Topic: Grade Breakdown
Replies: 35
Views: 384

Re: Grade Breakdown

Adrienne Yuh 2C wrote:I don't think he mentions anything on this, but he does say 50% or higher is required to pass with a C- or higher.



I saw that too and was so confused... He is saying if you earn a 50% in the class you automatically pass?
by Ava Nickman
Fri Nov 27, 2020 10:37 am
Forum: Student Social/Study Group
Topic: Final Exam Tips
Replies: 24
Views: 146

Re: Final Exam Tips

Im reviewing all the homework problems and the module quizzes
by Ava Nickman
Fri Nov 27, 2020 10:36 am
Forum: General Science Questions
Topic: Finals
Replies: 39
Views: 426

Re: Finals

How many multiple choice questions is it? Do we know?
by Ava Nickman
Sat Nov 21, 2020 8:48 am
Forum: Hybridization
Topic: pi bonds
Replies: 12
Views: 262

Re: pi bonds

When two p orbitals overlap they form a pi bond
by Ava Nickman
Sat Nov 21, 2020 8:45 am
Forum: Sigma & Pi Bonds
Topic: Hybridization
Replies: 7
Views: 92

Re: Hybridization

Yup! that's what it is I believe
by Ava Nickman
Sat Nov 21, 2020 8:39 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Stable Structures
Replies: 10
Views: 80

Re: Stable Structures

It depends what the question is asking. Sometimes you will need to draw all resonance structures while other times you will be asked to draw the most stable structure... it just depends. When in doubt being able to determine the most stable structure is very helpful.
by Ava Nickman
Sat Nov 21, 2020 8:38 am
Forum: Bond Lengths & Energies
Topic: Boiling vs. Melting Point
Replies: 15
Views: 105

Re: Boiling vs. Melting Point

They are two completely separate phase changes. The boiling point is when a liquid becomes a gas and the melting point is when a solid becomes a liquid. The boiling point is a higher temperature than the melting point. We often measure the durability of a molecule based on the values of the melting ...
by Ava Nickman
Sat Nov 21, 2020 8:35 am
Forum: Lewis Structures
Topic: Central Atom Question
Replies: 20
Views: 160

Re: Central Atom Question

like everyone said H can only bond once and cannot have an expanded octet like nitrogen so it will never be a central atom
by Ava Nickman
Sat Nov 14, 2020 1:53 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm #2 Content
Replies: 4
Views: 40

Re: Midterm #2 Content

ya that will probably be on midterm 2
by Ava Nickman
Sat Nov 14, 2020 1:49 pm
Forum: Electronegativity
Topic: Periodic Table Trend
Replies: 37
Views: 398

Re: Periodic Table Trend

Ionization energy and electronegativity both decrease down a group and increase across a period. As you move to the right the electrostatic attraction increase because the elements have more protons. As you move downwards the electrostatic attraction decreases as the the electrons move farther and f...
by Ava Nickman
Sat Nov 14, 2020 1:48 pm
Forum: Student Social/Study Group
Topic: Participation
Replies: 45
Views: 403

Re: Participation

its on ccle under grades. he emailed a link
by Ava Nickman
Sat Nov 14, 2020 1:46 pm
Forum: Sigma & Pi Bonds
Topic: Sigma vs Pi
Replies: 1
Views: 29

Re: Sigma vs Pi

So sigma and pi bonds form when the atomic orbitals overlap... When a sigma bond forms, it is end to end overlapping while with a Pi bond the lobe of one atomic orbital overlaps the other. A sigma bond is a covalent bond from the direct overlap of orbitals while Pi bond is the parallel overlap of p ...
by Ava Nickman
Sat Nov 14, 2020 1:43 pm
Forum: Student Social/Study Group
Topic: Midterm 2
Replies: 22
Views: 135

Re: Midterm 2

I am probably going to do what I did for the last midterm which was review my notes and then do all the quizzes on the website modules and review hw problems. It worked well for me last time
by Ava Nickman
Thu Nov 05, 2020 1:48 pm
Forum: General Science Questions
Topic: Midterm Grades
Replies: 30
Views: 356

Re: Midterm Grades

Yes grades are up! I too would love to be able to review what I got wrong if possible.
by Ava Nickman
Thu Nov 05, 2020 1:46 pm
Forum: Ionic & Covalent Bonds
Topic: Electron Affinity
Replies: 5
Views: 44

Re: Electron Affinity

Cl?!?! is my guess :)
by Ava Nickman
Thu Nov 05, 2020 1:45 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 1
Replies: 9
Views: 125

Re: Midterm 1

He just posted! Though I don't know if you can see the problems and which ones you actually got wrong...
by Ava Nickman
Thu Nov 05, 2020 1:44 pm
Forum: Student Social/Study Group
Topic: Studying Tips
Replies: 23
Views: 167

Re: Studying Tips

For this class in particular what I have been doing is reviewing my notes, then doing the practice test modules on his websites and then really diving into the concepts I get wrong from there. That way your studying is focused around needed areas and not nearly as time consuming
by Ava Nickman
Thu Nov 05, 2020 1:40 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 1 Review
Replies: 7
Views: 57

Re: Midterm 1 Review

Yes I'm with you two!!! Would love to review my test if possible
by Ava Nickman
Wed Nov 04, 2020 10:47 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Combustion analysis rounding
Replies: 5
Views: 83

Re: Combustion analysis rounding

I write the rounded version on my paper but keep the unrounded answer in my calculator. Then I round at the very end so its accurate. You can round if you want I think!
by Ava Nickman
Wed Nov 04, 2020 10:43 am
Forum: Lewis Structures
Topic: How do we know when an element will have more than 8 electrons?
Replies: 6
Views: 29

Re: How do we know when an element will have more than 8 electrons?

One way to tell is by looking at which orbital it lands on. For example, certain molecules on n=3 will be able to accept more electrons. Typically you will know based on the total number of valence electrons you calculate at the beginning of the problem and then you can look at the sub shells to dou...
by Ava Nickman
Wed Nov 04, 2020 10:40 am
Forum: Lewis Structures
Topic: Sulfate Ion Lewis Structure
Replies: 3
Views: 21

Re: Sulfate Ion Lewis Structure

Given that sulfur has n=3 orbitals where l=2 in the d subshell, l=1 in the p sub shell, and l=0 in the s sub shell, the atom can accept an extra pair in the available d sub shell as s and p are already filled.
by Ava Nickman
Wed Nov 04, 2020 10:36 am
Forum: Octet Exceptions
Topic: Expanded Octet of Phosphorus
Replies: 4
Views: 48

Re: Expanded Octet of Phosphorus

If I understand correctly, the reason phosphorus can have an expanded octet is because it has enough orbitals (n=3) to accept additional electrons. When n=3 the 3d sub shell is also available (we learned that n=3 has d, p, and s on that chart from lecture a few weeks ago). A regular octet would just...
by Ava Nickman
Wed Nov 04, 2020 10:29 am
Forum: Lewis Structures
Topic: Electrons in Lewis Structures
Replies: 8
Views: 41

Re: Electrons in Lewis Structures

Like they said above the number valence electrons in each element is the same as the group number up until 13-18. Then you must subtract 10 from the group number. Next, you add up the amount of electrons to get the total number. Don't forget to multiply by the number of each element if more than one...
by Ava Nickman
Wed Oct 28, 2020 1:15 pm
Forum: Photoelectric Effect
Topic: Work Function
Replies: 3
Views: 41

Re: Work Function

yes you are right about needing to convert
by Ava Nickman
Wed Oct 28, 2020 1:12 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: ground state electron configuration
Replies: 2
Views: 23

Re: ground state electron configuration

Adding on to that question I am a bit confused by the excited state. If it is when the electrons are less stable couldn't the configuration indicate a high or a lower energy level than the element actually has in their ground state? Or can is only be a higher energy level?
by Ava Nickman
Wed Oct 28, 2020 1:09 pm
Forum: Properties of Light
Topic: How to remember what v is in equations
Replies: 46
Views: 277

Re: How to remember what v is in equations

Yes, the font is different depending on if it stands for frequency or velocity. But also understanding what each equation means will help. Ex. Typically if wavelength is involved, they are referring to v as frequency. versus if mass is involved they are probably using velocity.
by Ava Nickman
Wed Oct 28, 2020 12:59 pm
Forum: Trends in The Periodic Table
Topic: Elements with a low ionization energy
Replies: 6
Views: 62

Re: Elements with a low ionization energy

A low ionization energy indicates that the electrostatic attraction between the electrons and the nucleus is weaker thus requiring less energy to remove an electron. Atoms that lose electrons become positive ions.
by Ava Nickman
Wed Oct 28, 2020 12:54 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration
Replies: 4
Views: 29

Re: Electron Configuration

I would write it the second way since technically that is the format we were given
by Ava Nickman
Wed Oct 21, 2020 2:25 pm
Forum: Administrative Questions and Class Announcements
Topic: The Midterm Topics
Replies: 5
Views: 70

Re: The Midterm Topics

As far as I am aware that should not be included on the midterm. I suggest looking over the learning outcomes 1 and 2 as well as doing the visual and audio focus modules on the website. Review lecture content and all hw up to #19 on the latest assignment. Hope this helps!
by Ava Nickman
Wed Oct 21, 2020 10:36 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Calculating Delta P
Replies: 3
Views: 46

Calculating Delta P

When calculating delta P as shown in the electron example during lecture, we checked the validity of the value by then evaluating delta V. Should we always do this when finding delta P to assert if it is a correct atomic model or was this simply for lecture purposes?
by Ava Nickman
Wed Oct 21, 2020 10:30 am
Forum: General Science Questions
Topic: Equation Sheet for Tests
Replies: 5
Views: 73

Equation Sheet for Tests

Will the equation sheet we are given also include the value of constants such as h that we use in the equations?
by Ava Nickman
Tue Oct 20, 2020 1:38 pm
Forum: DeBroglie Equation
Topic: De Brogile Wavelength Car Ex. from Lecture 8
Replies: 7
Views: 82

De Brogile Wavelength Car Ex. from Lecture 8

In the lecture, the De Brogile example asked for the wavelength of a car given a mass and velocity. It then asks if that wavelength is measurable. The wavelength is 1.64x10^-38m. Lavelle said that no, this would not be a detectible wavelength. My question is what determines if it is detectible? How ...
by Ava Nickman
Mon Oct 19, 2020 4:50 pm
Forum: Photoelectric Effect
Topic: Energy Per Photon
Replies: 2
Views: 44

Energy Per Photon

I am still bit confused on the idea of energy per photon in the photoelectric effect. In an earlier lecture Lavelle was saying how the intensity of the light is not what ejects electrons but rather the frequency of the light. He said that increasing intensity of the light increases the number of pho...
by Ava Nickman
Sun Oct 18, 2020 1:04 pm
Forum: General Science Questions
Topic: Writing Formulas
Replies: 10
Views: 79

Re: Writing Formulas

Equations are given I believe but it can't hurt to familiarize yourself with it!
by Ava Nickman
Sun Oct 18, 2020 1:00 pm
Forum: Properties of Light
Topic: Frequency vs Wavelength
Replies: 22
Views: 167

Re: Frequency vs Wavelength

Yes! Wavelength is in a sense dependent on frequency. Higher frequencies have higher energy thus determining wavelength
by Ava Nickman
Sun Oct 18, 2020 12:55 pm
Forum: Administrative Questions and Class Announcements
Topic: Exams
Replies: 12
Views: 101

Re: Exams

Yes. Probably best to use a paper and pen unless you can install the program that locks the screen like we are doing for our computer for the actual exam.
by Ava Nickman
Wed Oct 14, 2020 2:04 pm
Forum: Properties of Light
Topic: Photoelectric spectrum
Replies: 24
Views: 190

Re: Photoelectric spectrum

I believe we will also have access to something like this... https://www.123rf.com/photo_110493048_stock-illustration-visible-light-diagram-color-electromagnetic-spectrum-light-wave-frequency-educational-school-physics.html to help us evaluate questions such as the one on the homework
by Ava Nickman
Wed Oct 14, 2020 1:51 pm
Forum: Significant Figures
Topic: Sig Fig Process
Replies: 13
Views: 112

Re: Sig Fig Process

Similarly to the posts above, it is best to wait until the very end to round sig figs as your answer will be more accurate. Often times I will round sig figs on paper for each step but keep the original numbers stored in my calculator so that my answer still comes out closest to the actual answer. H...

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