Search found 50 matches

by Micah3J
Wed Dec 04, 2019 9:42 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs linear
Replies: 50
Views: 161

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: 30

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: 25

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: 12
Views: 99

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: 1080

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: 29

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: 19

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: 29

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: 59

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: 66

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: 33

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: 26

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: 67

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: 34

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: 34

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: 1390

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: 89

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: 47

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: 73

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: 3431

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: 61

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: 3431

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: 84

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: 78

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: 60

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: 84

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: 3431

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: 3431

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: 57

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: 56
Views: 407

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: 42

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: 16

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: 52

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: 86

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: 3431

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: 44

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: 27

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: 76

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: 44

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: 76

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: 40

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: 66

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: 51

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: 43

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: 60

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: 144

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: 216

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: 123

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: 52

Re: Kelvin

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

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