Search found 100 matches

by Micah3J
Sat Mar 14, 2020 9:42 pm
Forum: Calculating Work of Expansion
Topic: 4A.3
Replies: 9
Views: 167

Re: 4A.3

Charlyn Ghoubrial 2I wrote:
Angela Patel 2J wrote:Also, how would we know the sign of the internal energy?


If energy enters the system: +
If energy leaves the system: -
If work is done on the system: +
If work is done by the system: -


Thank you for this quick check for the internal energy
by Micah3J
Sat Mar 14, 2020 9:40 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: Temperature vs. activation energy
Replies: 5
Views: 239

Re: Temperature vs. activation energy

Just because we are increasing the number of collisions, how does this correlate to a decrease in activation energy? I thought that is something a catalyst does.
by Micah3J
Sat Mar 14, 2020 9:37 pm
Forum: Balancing Redox Reactions
Topic: flipping equations
Replies: 7
Views: 109

Re: flipping equations

What are you guys referring to as "flipping"? Does this mean making one side negative or like looking at the reverse reaction instead?
by Micah3J
Wed Mar 11, 2020 9:51 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalysis
Replies: 11
Views: 52

Re: Catalysis

Also, do catalysts affect the reverse reaction in the same way that it affects the forward reaction?
by Micah3J
Wed Mar 11, 2020 9:50 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: Activation Energy
Replies: 7
Views: 364

Re: Activation Energy

How exactly does a catalyst lower the activation energy of a reaction?
by Micah3J
Wed Mar 11, 2020 9:40 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Molecularity
Replies: 4
Views: 37

Re: Molecularity

unimolecular would correspond with 1 molecule that initiates the reaction bimolecular would correspond with 2 molecules colliding to start a reaction termolecular would correspond with 3 molecules colliding and higher molecularity is very rare Termolecular can also be 2 of the same molecules collid...
by Micah3J
Wed Mar 11, 2020 9:35 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalysis
Replies: 11
Views: 52

Re: Catalysis

Can someone help explain the gas phase example of Nitric Oxide that Lavelle gave for Homogeneous Catalyst? I don't quite get how we get to 3/2 O2?
by Micah3J
Wed Mar 11, 2020 9:25 pm
Forum: *Enzyme Kinetics
Topic: Adsorption vs. Absorption
Replies: 7
Views: 62

Re: Adsorption vs. Absorption

How can we easily identify adsorption or absorption? What kind of information is need to be certain?
by Micah3J
Wed Mar 11, 2020 9:20 pm
Forum: Balancing Redox Reactions
Topic: Oxidation/Reduction
Replies: 17
Views: 160

Re: Oxidation/Reduction

Can someone explain what makes a molecule a reducing agent or an oxidizing agent?
by Micah3J
Tue Mar 03, 2020 6:40 pm
Forum: General Rate Laws
Topic: Lecture Clarification [ENDORSED]
Replies: 2
Views: 136

Re: Lecture Clarification [ENDORSED]

Yes please^
I was looking over my notes again and couldn't quite remember
by Micah3J
Tue Mar 03, 2020 6:39 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 6M.7
Replies: 5
Views: 63

Re: 6M.7

Sorry this question is about 6M.3... Can someone briefly explain the process for 6M.3? I just want to make sure I have the right concepts down
by Micah3J
Tue Mar 03, 2020 6:37 pm
Forum: General Science Questions
Topic: Test 2
Replies: 12
Views: 221

Re: Test 2

kim 2I wrote:
Micah3J wrote:Test 2 is on all of outline 5 right and the second half of outline 4 right?


Yep! The second half of outline 4 being 5G or page 2 of the outline.


Sweet, thank you so much!
by Micah3J
Tue Mar 03, 2020 1:28 pm
Forum: General Science Questions
Topic: Test 2
Replies: 12
Views: 221

Re: Test 2

Test 2 is on all of outline 5 right and the second half of outline 4 right?
by Micah3J
Mon Mar 02, 2020 12:57 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Tips for Test
Replies: 23
Views: 211

Re: Tips for Test

Does anyone have any good youtube videos that are short but helpful for the electro chemistry material? I highly recommend the Organic Chemistry Tutor. Search him up on YouTube and the topic you are looking for, and there is a very high chance there will be a video for the topic you need. Thank you...
by Micah3J
Mon Mar 02, 2020 12:52 pm
Forum: Balancing Redox Reactions
Topic: Oxidation/Reduction
Replies: 17
Views: 160

Re: Oxidation/Reduction

Is it possible to have more than one reducing or oxidizing agent in a reaction?
by Micah3J
Mon Mar 02, 2020 12:03 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Tips for Test
Replies: 23
Views: 211

Re: Tips for Test

Does anyone have any good youtube videos that are short but helpful for the electro chemistry material?
by Micah3J
Wed Feb 12, 2020 11:16 am
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Reversible and irreversible
Replies: 3
Views: 32

Re: Reversible and irreversible

With a reversible pathway, the temperature is constant, volume increases, and pressure decreases. With a reversible process, you can use delta S= rev/T. There is more work done, which can be calculated using w= -nRTln(V2/V1). With an irreversible pathway, temperature will change (decrease then incr...
by Micah3J
Wed Feb 12, 2020 12:22 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Calculating Enthalpy with Atoms, Linear Molecules, and Nonlinear Molecules.
Replies: 2
Views: 27

Re: Calculating Enthalpy with Atoms, Linear Molecules, and Nonlinear Molecules.

Yes can someone please go over when we use the 5/2R and the 3/2R? I still don't quite get when to use them and why to use them
by Micah3J
Mon Feb 10, 2020 1:17 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: when to change sign of enthalpies
Replies: 7
Views: 60

Re: when to change sign of enthalpies

By flipping the equation it would mean that you are just taking the reverse reaction instead right? So then basically the reactants are on the products side in order to cancel things out?
by Micah3J
Mon Feb 10, 2020 12:48 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: identifying systems
Replies: 3
Views: 33

Re: identifying systems

In Outline 3 it says, "Distinguish the three different types of thermodynamic systems." This is referring to open, closed, and isolated right?
by Micah3J
Sun Feb 09, 2020 10:43 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Midterm Material
Replies: 10
Views: 99

Re: Midterm Material

Do you think he will go over any example problems tomorrow regarding the Gibbs Free Energy stuff that he discussed on Friday? Or does anyone have some good practice problems to share?
by Micah3J
Sun Feb 09, 2020 10:40 pm
Forum: Administrative Questions and Class Announcements
Topic: midterm format
Replies: 8
Views: 73

Re: midterm format

Majority of the points will be solving for values but dispersed throughout are conceptual questions that require you to understand why you might be doing what you are doing in the problem. Possible conceptual questions could be which why the reaction shifts with equilibrium or what is an intensive p...
by Micah3J
Sun Feb 09, 2020 10:37 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Intensive
Replies: 8
Views: 59

Re: Intensive

Intensive properties do not depend on the amount of substance and is usually constant units. Like specific heat capacity is an intensive property
by Micah3J
Sun Feb 09, 2020 1:17 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: using ICE tables
Replies: 3
Views: 39

Re: using ICE tables

Yes, ICE tables are just for Concentrations of molarity or for the pressures of gas. Conversions to mass can be done later by knowing the molarities at equilibrium
by Micah3J
Sun Feb 09, 2020 12:45 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Topics on the Midterm
Replies: 22
Views: 185

Re: Topics on the Midterm

Vinita Saxena 2I wrote:
Micah3J wrote:Does anyone have a list of the formulas we should be familiar with for this midterm?

The formula sheet is the same one we got for Test 1

Okay thanks
by Micah3J
Sun Feb 09, 2020 12:45 am
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Constant pressure
Replies: 19
Views: 138

Re: Constant pressure

And so just because there is constant external pressure, the internal pressure can still be changing because of the reaction going on?
by Micah3J
Sun Feb 09, 2020 12:14 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeters
Replies: 17
Views: 149

Re: Calorimeters

Is there a difference between a regular calorimeter and a bomb calorimeter? Yes, if you're talking about the simple calorimeters that are used in high school labs, which basically consist of thermometers suspended in a container filled with water. The difference between these calorimeters and bomb ...
by Micah3J
Sat Feb 08, 2020 5:28 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeters
Replies: 17
Views: 149

Re: Calorimeters

Is there a difference between a regular calorimeter and a bomb calorimeter?
by Micah3J
Sat Feb 08, 2020 5:27 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond Enthalpies
Replies: 4
Views: 41

Re: Bond Enthalpies

If on a test we were asked to use Hess's law, we would be given a table that shows the bond enthalpies right? If anything I just need to remember which ones are 0.
by Micah3J
Sat Feb 08, 2020 5:26 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Topics on the Midterm
Replies: 22
Views: 185

Re: Topics on the Midterm

Does anyone have a list of the formulas we should be familiar with for this midterm?
by Micah3J
Tue Jan 28, 2020 6:35 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess's Law
Replies: 11
Views: 70

Re: Hess's Law

So for Hess's Law, the sign of the resulting net enthalpy will tell if the sum of the reactions is endothermic or exothermic right? That is correct. If delta H of the sum of the enthalpies of the multiple reactions is negative, the overall reaction is exothermic. If delta H of the sum of the enthal...
by Micah3J
Tue Jan 28, 2020 6:32 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Closed vs isolated systems
Replies: 24
Views: 142

Re: Closed vs isolated systems

Shivam Rana 1L wrote:A closed system cannot exchange mass with its surroundings but it can exchange energy, while an isolated system cannot exchange either.

So what would be an example of a closed system and an example of an isolated system?
by Micah3J
Tue Jan 28, 2020 6:29 pm
Forum: Calculating Work of Expansion
Topic: 4A.3
Replies: 9
Views: 167

Re: 4A.3

Sorry this is for 4A.1 but I didn't know where else to ask. How can we tell if a system is open, closed, or isolated? Mainly, what is the difference between closed and isolated? I got those two mixed up
by Micah3J
Tue Jan 28, 2020 10:02 am
Forum: Ideal Gases
Topic: R Constant
Replies: 26
Views: 245

Re: R Constant

Just make sure that the R constant and your given units will cancel out and match accordingly
by Micah3J
Tue Jan 28, 2020 10:00 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Bomb calorimetry
Replies: 3
Views: 19

Re: Bomb calorimetry

I think it is a constant volume because it was named the "bomb" calorimeter because it would explode when the pressure got too high.
by Micah3J
Tue Jan 28, 2020 9:58 am
Forum: Ideal Gases
Topic: Ideal Gas
Replies: 4
Views: 43

Re: Ideal Gas

I think that has to do with being at the ideal pressure and temperature of like 1atm and then 25C. I could be wrong though
by Micah3J
Tue Jan 28, 2020 9:57 am
Forum: Administrative Questions and Class Announcements
Topic: Grading of Tests
Replies: 18
Views: 165

Re: Grading of Tests

Does anyone know when we will be getting Test #1 back?
by Micah3J
Mon Jan 27, 2020 10:57 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Acid and Bases
Replies: 2
Views: 50

Re: Acid and Bases

Sodium Hydroxide
by Micah3J
Mon Jan 27, 2020 10:55 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: q vs. delta H
Replies: 6
Views: 80

Re: q vs. delta H

Why in the notes are they referred to as equal then?
qp = delta H = n(Cp)(delta T)
by Micah3J
Mon Jan 27, 2020 10:53 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeter
Replies: 7
Views: 53

Re: Calorimeter

Will we be given whether the calorimeter is of constant pressure or of constant volume in the problem? Or how would we be able to tell?
by Micah3J
Mon Jan 27, 2020 10:48 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Hess's Law
Replies: 11
Views: 70

Re: Hess's Law

So for Hess's Law, the sign of the resulting net enthalpy will tell if the sum of the reactions is endothermic or exothermic right?
by Micah3J
Mon Jan 27, 2020 12:38 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Units for temperature?
Replies: 11
Views: 63

Re: Units for temperature?

I think that it can be either, its just a matter of making sure that your units are all compatible all the way throughout. I think Kelvin would be the more standard though
by Micah3J
Mon Jan 27, 2020 12:35 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Extensive vs intensive propeties
Replies: 5
Views: 35

Re: Extensive vs intensive propeties

Also, what is the difference between intensive properties and state properties?
by Micah3J
Mon Jan 27, 2020 12:35 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Extensive vs intensive propeties
Replies: 5
Views: 35

Re: Extensive vs intensive propeties

What are some other examples of extensive properties?
by Micah3J
Sun Jan 26, 2020 6:15 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Pressure and equilibrium
Replies: 9
Views: 70

Re: Pressure and equilibrium

zfinn wrote:
Micah3J wrote:Pressure doesn't affect the equilibrium constant though right? It will only shift it one way or the other?


yep! heat is the only measure that affects the equilibrium constant


Wait, you mean heat as well as concentration of either the products or the reactants right?
by Micah3J
Sun Jan 26, 2020 6:11 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Pressure and equilibrium
Replies: 9
Views: 70

Re: Pressure and equilibrium

Pressure doesn't affect the equilibrium constant though right? It will only shift it one way or the other?
by Micah3J
Sun Jan 26, 2020 6:07 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Kw Equations
Replies: 10
Views: 120

Re: Kw Equations

there is also pkw = pka + pkb
by Micah3J
Sun Jan 26, 2020 6:03 pm
Forum: Phase Changes & Related Calculations
Topic: Why does steam cause burns?
Replies: 29
Views: 201

Re: Why does steam cause burns?

When steam condenses onto the skin there is a large transfer of energy in the form of heat which causes the skin to burn.
by Micah3J
Sun Jan 26, 2020 6:00 pm
Forum: Phase Changes & Related Calculations
Topic: Steam Burns
Replies: 9
Views: 66

Re: Steam Burns

Steam burns are severe since all of H20 is changing states and thus transfers a lot of energy in the form of heat onto the skin
by Micah3J
Wed Jan 08, 2020 10:49 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium Constant
Replies: 8
Views: 90

Re: Equilibrium Constant

When writing the formula for K, does it matter if you put the gases in brackets as well or how do you differentiate that it is a gas and not aqueous?
by Micah3J
Wed Dec 04, 2019 9:42 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs linear
Replies: 56
Views: 750

Re: Bent vs linear

Is there a difference between bent and angular? Or is it just another way of saying the same thing?
by Micah3J
Wed Dec 04, 2019 9:38 pm
Forum: Lewis Acids & Bases
Topic: HCl and HI
Replies: 10
Views: 72

Re: HCl and HI

AronCainBayot1L wrote:HI is more stronger because chlorine is more electronegative and will have a stronger bond. The weaker the bond the stronger the acid.

And this also means that the stronger the bond the stronger the base right?
by Micah3J
Wed Dec 04, 2019 9:36 pm
Forum: Polyprotic Acids & Bases
Topic: Ka value
Replies: 5
Views: 65

Re: Ka value

This is only in regard to resulting molecules and Ka calculations right?
by Micah3J
Wed Dec 04, 2019 6:30 pm
Forum: Student Social/Study Group
Topic: Practice Final
Replies: 17
Views: 520

Re: Practice Final

Does anyone know if Lavelle will be going over the same exam example problems during his lectures? Or would it be beneficial to attend more than one?
by Micah3J
Wed Dec 04, 2019 6:26 pm
Forum: DeBroglie Equation
Topic: De Broglie Wavelength
Replies: 23
Views: 1624

Re: De Broglie Wavelength

Can you use the de broglie equation to calculate the wavelength of something other than an electron? And when do we know to use the de broglie equation over KE?
by Micah3J
Wed Dec 04, 2019 6:21 pm
Forum: Student Social/Study Group
Topic: Finals Preparation
Replies: 7
Views: 103

Re: Finals Preparation

I think that a good night's sleep is pretty important too. I'd suggest to not stay up super late cramming because that can limit your ability to perform on the test due to lack of sleep.
by Micah3J
Wed Dec 04, 2019 6:19 pm
Forum: General Science Questions
Topic: Review in General
Replies: 4
Views: 102

Re: Review in General

I find youtube videos to be helpful too. Sometimes they just explain it in a different way which can help increase understanding
by Micah3J
Wed Dec 04, 2019 6:14 pm
Forum: Polyprotic Acids & Bases
Topic: amphoteric
Replies: 5
Views: 80

Re: amphoteric

What amphoteric compounds will we need to know for the final? Or is it just understanding the characteristics of the compounds?
by Micah3J
Wed Dec 04, 2019 6:08 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Internal Energy and Titration
Replies: 2
Views: 133

Re: Internal Energy and Titration

What exactly will we need to know for titrations on the final?
by Micah3J
Sat Nov 30, 2019 1:37 pm
Forum: Bond Lengths & Energies
Topic: Melting Points
Replies: 8
Views: 195

Re: Melting Points

What is the difference between melting point and boiling point?
by Micah3J
Sat Nov 30, 2019 1:36 pm
Forum: Naming
Topic: Meaning of Cis and Trans
Replies: 11
Views: 86

Re: Meaning of Cis and Trans

So just to be clear, the prefixes cis and trans can be in front of any molecule that can be either symmetrical or asymmetrical?
by Micah3J
Fri Nov 22, 2019 12:23 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular Shape and Polarity
Replies: 5
Views: 75

Re: Molecular Shape and Polarity

I think it just affects the bond angles between the atoms but I could be wrong.
by Micah3J
Thu Nov 21, 2019 4:52 pm
Forum: Hybridization
Topic: hybridization on the test?
Replies: 10
Views: 131

Re: hybridization on the test?

For the sigma and pi bonds, will we just have to identify where they occur and what their function is?
by Micah3J
Thu Nov 21, 2019 4:51 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Angular vs. Bent
Replies: 5
Views: 60

Re: Angular vs. Bent

How can we tell if the bond angle should be equal to a certain degree or less than the certain degree. An example of this can be ClO2+... The shape is bent, but I don't know how to tell that it is less than 120 degrees instead of just exactly 120 degrees. Generally a bond is equal to a certain degr...
by Micah3J
Thu Nov 21, 2019 4:13 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Angular vs. Bent
Replies: 5
Views: 60

Re: Angular vs. Bent

How can we tell if the bond angle should be equal to a certain degree or less than the certain degree. An example of this can be ClO2+... The shape is bent, but I don't know how to tell that it is less than 120 degrees instead of just exactly 120 degrees.
by Micah3J
Sun Nov 17, 2019 4:15 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: AXE formula
Replies: 32
Views: 2600

Re: AXE formula

Is the AXE formula another name for the VSEPR formula? Are the two terms interchangeable?
by Micah3J
Wed Nov 13, 2019 10:10 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Memorization
Replies: 15
Views: 157

Re: Memorization

Did Lavelle cover all of the different structures that we will need to know or will there be more on Friday's lecture?
by Micah3J
Wed Nov 13, 2019 10:02 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: Energy
Replies: 2
Views: 65

Re: Energy

What are the units of the formula for Interaction Potential Energy?
by Micah3J
Wed Nov 13, 2019 9:56 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VESPR Model of H2O
Replies: 12
Views: 116

Re: VESPR Model of H2O

I was wondering about the example of the VSEPR Model of CO3 that we went over in lecture today. Does the double bond cause it to have any polarity?
by Micah3J
Wed Nov 06, 2019 5:00 pm
Forum: Administrative Questions and Class Announcements
Topic: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]
Replies: 52
Views: 4711

Re: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]

For Dino Nuggets 6a, what equation do we need to use ? ive been trying to use different one (because theres a lot for E) and that molar mass is messing me up. I used de Broglie's since light isn't involved. Also, make sure you convert the molar mass to mass using Avogadro's... that also might be me...
by Micah3J
Wed Nov 06, 2019 4:54 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Mo and Ag exceptions
Replies: 4
Views: 169

Re: Mo and Ag exceptions

Can someone explain the exceptions to electron configuration again? Thanks
by Micah3J
Wed Nov 06, 2019 3:25 pm
Forum: Administrative Questions and Class Announcements
Topic: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]
Replies: 52
Views: 4711

Re: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]

What is the limiting reagent for #3? Thanks, i just want to be sure I'm doing it right
by Micah3J
Wed Nov 06, 2019 1:01 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect vs. De Broglie
Replies: 8
Views: 248

Re: Photoelectric Effect vs. De Broglie

Do we use the De Broglie equation for the midterm review question 13a? Yes we do. We know this because we are using the wavelength of a potassium ion, which has mass. The speed of light equation (\textup{c}=\lambda \upsilon ) on the other hand would be used for situations involving electrom...
by Micah3J
Tue Nov 05, 2019 11:40 pm
Forum: DeBroglie Equation
Topic: Midterm Dino Nuggets worksheet 8b
Replies: 2
Views: 159

Re: Midterm Dino Nuggets worksheet 8b

In broad terms, you need to figure out the total energy of one photon from the incident light to then discover the light's frequency. In more detail: 1. You're given the ejected electron's wavelength, and this tells you that there is excess energy (i.e. kinetic energy). Use this wavelength to calcu...
by Micah3J
Tue Nov 05, 2019 11:35 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenberg Indeterminacy Equation
Replies: 6
Views: 203

Re: Heisenberg Indeterminacy Equation

What exactly do we use the Heisenberg's equation for and what does it tell us? Thanks
by Micah3J
Tue Nov 05, 2019 11:32 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect vs. De Broglie
Replies: 8
Views: 248

Re: Photoelectric Effect vs. De Broglie

Do we use the De Broglie equation for the midterm review question 13a?
by Micah3J
Tue Nov 05, 2019 10:13 pm
Forum: Administrative Questions and Class Announcements
Topic: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]
Replies: 52
Views: 4711

Re: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]

Could someone please explain 8b please? I used the photoelectric effect equation relating kinetic energy, energy of the photon, and the work function, but for some reason I'm not getting the correct answer. What answer did you get? I'm having the same trouble and wondering if maybe we made the same...
by Micah3J
Tue Nov 05, 2019 9:53 pm
Forum: Administrative Questions and Class Announcements
Topic: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]
Replies: 52
Views: 4711

Re: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]

Can someone explain to me the concepts behind 10a? I am confused on why it is Aluminum. Thanks
by Micah3J
Mon Nov 04, 2019 8:44 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Atomic Orbitals in Terms of Probability
Replies: 6
Views: 161

Re: Atomic Orbitals in Terms of Probability

Do you think we will need to be able to draw the different atomic orbital patterns for the different types?
by Micah3J
Mon Nov 04, 2019 12:00 am
Forum: Student Social/Study Group
Topic: Study Tips
Replies: 58
Views: 1866

Re: Study Tips

KayleyW_3L wrote:I would also highly recommend Khan Academy to study for material, because it explains concepts and reinforces ideas in your mind.


Which chemistry course has majority of the topics we are covering? Or do you just search around for the topics we are discussing?
by Micah3J
Sun Nov 03, 2019 11:57 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: aufbau principle
Replies: 4
Views: 74

Re: aufbau principle

Will we need to know the f block for the midterm?
by Micah3J
Sun Nov 03, 2019 9:41 pm
Forum: Formal Charge and Oxidation Numbers
Topic: formal charge
Replies: 5
Views: 62

Re: formal charge

PranaviKolla3G wrote:How do you calculate formal charge again?


The formal is...
FC = V - (L + S/2)
by Micah3J
Sun Nov 03, 2019 9:35 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Stability
Replies: 9
Views: 134

Re: Stability

Is there a quick way of determining the formal charge of an atom without going through the equation each time? Thanks
by Micah3J
Sun Nov 03, 2019 9:26 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm
Replies: 16
Views: 155

Re: Midterm

Does anyone have any good review videos that they recommend for the midterm?
by Micah3J
Thu Oct 31, 2019 6:19 pm
Forum: Administrative Questions and Class Announcements
Topic: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]
Replies: 52
Views: 4711

Re: DINO NUGGETS Review Session! Download Problems HERE [ENDORSED]

If I am unable to make the review session tomorrow night but still work out the problems on my own, will the answers be posted on here so I can check my work?
by Micah3J
Thu Oct 31, 2019 6:03 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge Calculation
Replies: 4
Views: 72

Re: Formal Charge Calculation

When calculating the formal charge, we want the outer elements to carry the negative charge as opposed to the middle element right? If so, can someone explain why?
by Micah3J
Thu Oct 31, 2019 6:01 pm
Forum: Resonance Structures
Topic: Difference between Resonance and Lewis structures
Replies: 5
Views: 59

Re: Difference between Resonance and Lewis structures

How can you tell when there is resonance and if the middle element should just be left without a full octet?
by Micah3J
Thu Oct 24, 2019 7:03 pm
Forum: Trends in The Periodic Table
Topic: Aufbau Principle
Replies: 11
Views: 126

Re: Aufbau Principle

What kind of questions might there be regarding the Aufbau Principle on a test? Questions regarding the electron configurations of elements. So you must be able to know the principles in order to determine the correct electron configurations or to figure out whether or not the electron is in a grou...
by Micah3J
Thu Oct 24, 2019 6:59 pm
Forum: Trends in The Periodic Table
Topic: Relationship between Electronegativity and Ionization Energy?
Replies: 6
Views: 86

Re: Relationship between Electronegativity and Ionization Energy?

Is the electron affinity a number that we will have to calculate or something we memorize?
by Micah3J
Thu Oct 24, 2019 6:56 pm
Forum: Trends in The Periodic Table
Topic: Aufbau Principle
Replies: 11
Views: 126

Re: Aufbau Principle

What kind of questions might there be regarding the Aufbau Principle on a test?
by Micah3J
Fri Oct 18, 2019 11:17 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg Equation Alternatives?
Replies: 4
Views: 69

Re: Rydberg Equation Alternatives?

So will we be expected to use the alternative way or the Rydberg equation? Will both get us full credit?
by Micah3J
Fri Oct 18, 2019 1:45 am
Forum: Photoelectric Effect
Topic: HW 1B.5
Replies: 8
Views: 122

Re: HW 1B.5

I converted KeV directly to Joules so I also don't understand the ned to multiply KeV by 10^3. However, I am also very confused as to how these units cancel and my final answer was lambda=8.831pm. I multiplied plancks constant by c and got 1.9878x10^-25. I then divided the product by energy in joul...
by Micah3J
Fri Oct 18, 2019 1:26 am
Forum: Properties of Light
Topic: Unit Conversions
Replies: 6
Views: 95

Re: Unit Conversions

Can someone confirm that a keV is really 10^3 eV which is equal to 1.602x10^-19 J?
by Micah3J
Thu Oct 17, 2019 6:55 pm
Forum: *Shrodinger Equation
Topic: Electron Distribution Definition
Replies: 4
Views: 91

Re: Electron Distribution Definition

And so just be clear on density, that is just referring to the central location of majority of the electrons? Is there a mathematical number associated with this density?
by Micah3J
Fri Oct 11, 2019 12:45 am
Forum: Properties of Light
Topic: models of light
Replies: 5
Views: 98

Re: models of light

When are we able to tell when to use the wavelength model versus the photon model? It is still unclear the relationship between photons and frequency and how that applies to the photoelectric effect
by Micah3J
Fri Oct 11, 2019 12:41 am
Forum: Balancing Chemical Reactions
Topic: Balancing Chemical Reactions
Replies: 20
Views: 474

Re: Balancing Chemical Reactions

Would there ever be a question in which the chemical equations cannot be balanced? How would we be able to tell without trying dozens of different combinations?
by Micah3J
Fri Oct 11, 2019 12:32 am
Forum: Significant Figures
Topic: Question About Significant Figures and Rounding
Replies: 22
Views: 807

Re: Question About Significant Figures and Rounding

Do the significant figures of a constant such as Avogadro's number or Planck's constant matter in our final answer?
by Micah3J
Fri Oct 11, 2019 12:29 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Avogradro's Number [ENDORSED]
Replies: 5
Views: 317

Re: Avogradro's Number [ENDORSED]

Why is Avogradro's number based on Carbon 12?
by Micah3J
Thu Oct 10, 2019 9:00 pm
Forum: General Science Questions
Topic: Kelvin
Replies: 3
Views: 95

Re: Kelvin

When would there ever be a situation in which there is zero Kelvin?

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