Search found 99 matches
- Mon Mar 09, 2020 10:01 pm
- Forum: First Order Reactions
- Topic: Half Life Equations
- Replies: 10
- Views: 554
Re: Half Life Equations
I think they will be provided!
- Mon Mar 09, 2020 10:00 pm
- Forum: General Rate Laws
- Topic: integrated rate law vs general
- Replies: 8
- Views: 703
Re: integrated rate law vs general
when do you know which to use?
- Mon Mar 09, 2020 10:00 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: k'
- Replies: 6
- Views: 402
Re: k'
this term is to signify the reverse reaction
- Mon Mar 09, 2020 9:58 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Study Advice
- Replies: 73
- Views: 6771
Re: Study Advice
I've been doing a lot of independent studying through khan using the outlines given by Lavelle in order to guide my research.
- Mon Mar 09, 2020 9:56 pm
- Forum: Van't Hoff Equation
- Topic: What's the purpose of Van't Hoff?
- Replies: 5
- Views: 496
Re: What's the purpose of Van't Hoff?
what if there are two variables changing?
- Mon Mar 09, 2020 9:55 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: spontaneity
- Replies: 39
- Views: 1830
Re: spontaneity
the spontaneity does depend on the enthalpy and entropy as seen in the equation
- Mon Mar 09, 2020 9:54 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Autoprotolysis
- Replies: 6
- Views: 1135
Re: Autoprotolysis
are there any special characteristics they have?
- Mon Mar 09, 2020 9:53 pm
- Forum: Ideal Gases
- Topic: PV=nRT
- Replies: 74
- Views: 4221
Re: PV=nRT
when do you know you are allowed to use this formula?
- Mon Mar 09, 2020 9:52 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Excellence in Chemistry Award!
- Replies: 27
- Views: 9824
Re: Excellence in Chemistry Award!
great job !!!
- Mon Mar 09, 2020 9:51 pm
- Forum: Balancing Redox Reactions
- Topic: oxidation number
- Replies: 10
- Views: 732
Re: oxidation number
it also can depend on the reaction and the compound
- Fri Feb 28, 2020 3:37 pm
- Forum: Balancing Redox Reactions
- Topic: Oxidation number of Ozone
- Replies: 10
- Views: 692
Re: Oxidation number of Ozone
this is in an elemental state so it should be 0
- Fri Feb 28, 2020 3:35 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Products and Reactants
- Replies: 5
- Views: 371
Re: Products and Reactants
I think it depends on the classification of the question
- Fri Feb 28, 2020 3:34 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: delta G = -nFE
- Replies: 6
- Views: 522
Re: delta G = -nFE
a positive E value will result in a negative delta G meaning it is spontaneous
- Fri Feb 28, 2020 3:32 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Flow of electrons
- Replies: 4
- Views: 752
Re: Flow of electrons
does the flow of electrons indicate which of the metal pieces is being eroded in the solutions?
- Fri Feb 28, 2020 3:31 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: platinum
- Replies: 5
- Views: 360
Re: platinum
yes because there must be a solid conductor in each of the reactions. make sure to indicate this in the cell diagram
- Fri Feb 28, 2020 3:30 pm
- Forum: Balancing Redox Reactions
- Topic: REDOX Agents
- Replies: 9
- Views: 728
Re: REDOX Agents
what is the purpose of identifying the agents?
- Fri Feb 28, 2020 3:30 pm
- Forum: Balancing Redox Reactions
- Topic: Direction of Reaction
- Replies: 3
- Views: 234
Re: Direction of Reaction
does this mean that if the Ecell is positive then more products are being produced making it spontaneous?
- Fri Feb 28, 2020 3:28 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Anode vs Cathode
- Replies: 15
- Views: 831
Re: Anode vs Cathode
how do you determine it based on the cell potentials? especially if the values are similar?
- Fri Feb 28, 2020 3:27 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Is it spontaneous?
- Replies: 4
- Views: 316
Re: Is it spontaneous?
would it be spontaneous if it was positive?
- Fri Feb 28, 2020 3:26 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Concentration Cells
- Replies: 6
- Views: 503
Re: Concentration Cells
Is there different equations to use?
- Thu Feb 13, 2020 7:37 pm
- Forum: Calculating Work of Expansion
- Topic: Work
- Replies: 5
- Views: 272
Re: Work
Is irreversible always sudden?
- Thu Feb 13, 2020 7:36 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: C in nCv ln (T2/T1)
- Replies: 8
- Views: 1165
Re: C in nCv ln (T2/T1)
there is also a different way to find Cv and Cp for mono and diatomic molecules.
- Thu Feb 13, 2020 7:36 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: C in nCv ln (T2/T1)
- Replies: 8
- Views: 1165
Re: C in nCv ln (T2/T1)
this is the heat capacity of the system at constant volume
- Thu Feb 13, 2020 7:35 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Isobaric systems
- Replies: 16
- Views: 773
Re: Isobaric systems
What about an adiabatic system? is there a different equation for that?
- Thu Feb 13, 2020 7:33 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm grading
- Replies: 8
- Views: 394
Re: Midterm grading
I also know that the 1 o-clock lecture and the 3 o-clock lecture are going to have combined grading because there is only one TA for the last lecture and it wouldn't be fair for her to have to grade all of them.
- Fri Feb 07, 2020 5:56 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Boltzmann Equation
- Replies: 2
- Views: 91
Boltzmann Equation
Is there several versions of the kb constant that can be used in the equation?
- Fri Feb 07, 2020 5:54 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Isolated vs Closed [ENDORSED]
- Replies: 34
- Views: 4096
Re: Isolated vs Closed [ENDORSED]
would this change the dynamics of the system?
- Fri Feb 07, 2020 5:53 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Equation
- Replies: 3
- Views: 231
Equation
Can we always replace the q,rev with the change in enthalpy?
- Fri Feb 07, 2020 5:52 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: negative Delta U
- Replies: 5
- Views: 274
Re: negative Delta U
are there any other cases where the change in internal energy will be negative?
- Fri Feb 07, 2020 5:50 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Equations
- Replies: 3
- Views: 94
Equations
Is there a way to remember all the equations for entropy and the conditions they satisfy?
- Fri Jan 31, 2020 6:06 pm
- Forum: Ideal Gases
- Topic: pv=nrt
- Replies: 9
- Views: 366
pv=nrt
Can there be a change indicated to p, v, r, and t depending on the question?
- Fri Jan 31, 2020 6:05 pm
- Forum: Phase Changes & Related Calculations
- Topic: Units
- Replies: 16
- Views: 774
Re: Units
This is because they are both scaled the same. However, if this is still confusing try just using Kelvin.
- Fri Jan 31, 2020 6:03 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hess' Law
- Replies: 7
- Views: 221
Re: Hess' Law
State properties are allowed to be added or subtracted to each other.
- Fri Jan 31, 2020 6:02 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Max Heat Capacity
- Replies: 4
- Views: 108
Max Heat Capacity
is there a max heat capacity on a system?
- Fri Jan 31, 2020 12:31 pm
- Forum: Phase Changes & Related Calculations
- Topic: Phase Changes
- Replies: 17
- Views: 672
Phase Changes
phase changes occur at a constant temperature?
- Thu Jan 23, 2020 11:56 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Ka and Kb
- Replies: 10
- Views: 482
Ka and Kb
Ka and Kb are only assigned to weak acids and weak bases?
- Thu Jan 23, 2020 11:55 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Assuming X
- Replies: 3
- Views: 219
Assuming X
Do you only assume x has a small change if Ka or Kb is less than 10^-3?
- Thu Jan 23, 2020 11:53 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Partial Pressure
- Replies: 5
- Views: 220
Partial Pressure
Does increasing the partial pressure of one element, affect the partial pressure of another? Or does this only apply when increasing the overall pressure?
- Thu Jan 23, 2020 11:50 pm
- Forum: Ideal Gases
- Topic: R Constant
- Replies: 26
- Views: 1110
R Constant
How do you know which variation of the R constant to use?
- Thu Jan 16, 2020 10:56 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Changes in K and Q
- Replies: 2
- Views: 158
Changes in K and Q
I'm still a little confused about K and Q. Does change temperature change K or Q? Does a change in concentration change Q?
- Thu Jan 16, 2020 10:52 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Checking Answers
- Replies: 1
- Views: 124
Checking Answers
Is there an easy way to calculate/ tell if you have calculated the wrong answer? or your answer is completely not possible?
- Thu Jan 16, 2020 10:51 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Tips for Test
- Replies: 23
- Views: 1076
Tips for Test
Any way to study effectively for the test next week? Are we being tested on chemical equilibrium and acids and bases?
- Thu Jan 16, 2020 10:50 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: ICE tables
- Replies: 3
- Views: 115
ICE tables
Are there shortcuts that can be applied when using the quadratic equation?
- Thu Jan 16, 2020 10:50 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Stress
- Replies: 4
- Views: 102
Stress
What are the different categories of stress that can be applied?
- Thu Jan 09, 2020 9:26 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Value of K
- Replies: 4
- Views: 213
Value of K
Is there a value that K can not reach? Because I was thinking that electrons can not move faster than the speed of light which limits speed. So is there a threshold that K can not reach?
- Thu Jan 09, 2020 9:22 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Unites for K
- Replies: 2
- Views: 144
Unites for K
Why does K not have any units? I know units matter when plugging it into the equation, but why doesn't it have any units after it is calculated?
- Thu Jan 09, 2020 9:21 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Graphing K and Q Values
- Replies: 4
- Views: 166
Graphing K and Q Values
In high school, I had to draw graphs comparing these values in order to show which is favored. Is this something we are going to have to do?
- Thu Jan 09, 2020 9:20 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Comparing K and Q
- Replies: 6
- Views: 233
Comparing K and Q
When would we have to compare K and Q values to each other? Does this give us information about the reaction as it is happening?
- Thu Jan 09, 2020 9:19 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Combining Equations
- Replies: 1
- Views: 118
Combining Equations
How do you combine two reaction equations together? Are there times where things are going to cancel out?
- Thu Jan 09, 2020 9:17 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: K and Q Values
- Replies: 5
- Views: 179
K and Q Values
If Q>K, does this mean that the forward reaction is favored and it must continue in the reverse reaction in order to reach equilibrium?
- Sat Dec 07, 2019 11:15 pm
- Forum: Naming
- Topic: Memorization
- Replies: 4
- Views: 347
Re: Memorization
There are some that come out a lot and are very common. those should be easier to memorize.
- Sat Dec 07, 2019 11:14 pm
- Forum: Naming
- Topic: (en), (dien), etc.
- Replies: 6
- Views: 325
Re: (en), (dien), etc.
Just make sure you remember if they have any charge associated with them.
- Sat Dec 07, 2019 11:13 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: Does dipole-dipole force only exist among polar molecules?
- Replies: 9
- Views: 1228
Re: Does dipole-dipole force only exist among polar molecules?
You should show that one of the atoms is pulling the electrons their direction giving it a slight charge.
- Sat Dec 07, 2019 10:24 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis vs Bronsted
- Replies: 7
- Views: 605
Re: Lewis vs Bronsted
What about the Arrhenius definition of acids and bases?
- Sun Dec 01, 2019 9:40 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Grades
- Replies: 15
- Views: 952
Grades
I heard that we only need 250 points in the whole class to pass. Is this true?
- Sun Dec 01, 2019 9:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Advice from a Medical Student - Part II [ENDORSED]
- Replies: 298
- Views: 245061
Re: Advice from a Medical Student - Part II [ENDORSED]
Thank you for sharing your experience! Is there any time where you felt like you were behind others in your class or felt discouraged? I believe this is very common in big school settings.
- Sun Dec 01, 2019 9:32 pm
- Forum: Student Social/Study Group
- Topic: Vocabulary
- Replies: 7
- Views: 493
Vocabulary
Is there any vocabulary we should be familiar with for the final exam?
- Sun Dec 01, 2019 9:29 pm
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 3
- Views: 233
Final
Does anyone know how many questions are going to be on the final? what topics may be emphasized?
- Sun Dec 01, 2019 9:26 pm
- Forum: Student Social/Study Group
- Topic: Studying Videos
- Replies: 3
- Views: 216
Studying Videos
Are there any specific videos online that have helped people study? for quantum, lewis structures, hybridization, shapes, and chemical properties?
- Sun Dec 01, 2019 9:23 pm
- Forum: Student Social/Study Group
- Topic: Studying for Final
- Replies: 7
- Views: 677
Studying for Final
What are some effective ways to study for the final? specific topic to focus on?
- Sun Nov 24, 2019 6:07 pm
- Forum: Naming
- Topic: Order in Naming
- Replies: 12
- Views: 672
Order in Naming
When given the name of the compound, does it matter the order in which you formulate the atomic symbols?
- Sun Nov 24, 2019 6:04 pm
- Forum: Biological Examples
- Topic: Final
- Replies: 1
- Views: 173
Final
Should we know the biological functions of transition metals?
- Sun Nov 24, 2019 6:02 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Drawing Structures
- Replies: 4
- Views: 253
Drawing Structures
Will we have to draw the coordination compounds exactly the way they are bonded? as in making Ni bond with O in H2O
- Sun Nov 24, 2019 5:59 pm
- Forum: Naming
- Topic: Trans and Cis
- Replies: 8
- Views: 464
Trans and Cis
Is the only way to determine is a compound is trans- or cis- by the formation of the atoms?
- Sun Nov 24, 2019 5:52 pm
- Forum: Naming
- Topic: Oxidation Numbers
- Replies: 4
- Views: 396
Oxidation Numbers
How do you determine oxidation numbers based on a name? or a compound?
- Sun Nov 17, 2019 10:54 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: dipole moments
- Replies: 11
- Views: 586
Re: dipole moments
How do you determine dipole moments? Is it just based on the atoms in the periodic table?
- Sun Nov 17, 2019 10:52 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Drawing molecules
- Replies: 12
- Views: 665
Re: Drawing molecules
You should know the shape of the compound and it relative to the charges of the atoms.
- Sun Nov 17, 2019 10:50 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Why is SF4 Polar?
- Replies: 6
- Views: 742
Re: Why is SF4 Polar?
I think there is a slight charge on each side that makes it polar.
- Sun Nov 17, 2019 10:49 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR Notation
- Replies: 7
- Views: 371
Re: VSEPR Notation
There would be no E term in the notation.
- Mon Nov 11, 2019 12:13 am
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge Equation
- Replies: 3
- Views: 253
Formal Charge Equation
Is there another way to determine the formal charge of an atom without the equation?
- Mon Nov 11, 2019 12:12 am
- Forum: Formal Charge and Oxidation Numbers
- Topic: Determine Formal Charge
- Replies: 3
- Views: 251
Determine Formal Charge
How do you determine which element is better to have a formal charge in a compound?
- Mon Nov 11, 2019 12:11 am
- Forum: Coordinate Covalent Bonds
- Topic: Determining bonds
- Replies: 4
- Views: 455
Determining bonds
How do you know if two elements form a covalent bond? Is this known through determining if an element is a non metal and a metal?
- Mon Nov 11, 2019 12:09 am
- Forum: Octet Exceptions
- Topic: More then 8 electrons
- Replies: 5
- Views: 398
More then 8 electrons
If an element has more than 8 electron in the outer shell, is this allowed because it has another orbital it can fill?
- Mon Nov 11, 2019 12:08 am
- Forum: Bond Lengths & Energies
- Topic: Double and Triple Bonds
- Replies: 3
- Views: 257
Double and Triple Bonds
Why are triple bonds stronger than double bonds? Does this mean then have a stronger pull to the electrons?
- Sun Nov 03, 2019 6:45 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic and Covalent Characteristics
- Replies: 3
- Views: 174
Ionic and Covalent Characteristics
How do we know how much a covalent bond has ionic properties? like to what extent can they have ionic properties?
- Sun Nov 03, 2019 6:35 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configurations
- Replies: 3
- Views: 122
Electron Configurations
What are the rules that electron configurations follow? How do we know if they don't have to follow a certain rule? Do they apply when electrons are in excited states?
- Sun Nov 03, 2019 6:33 pm
- Forum: Trends in The Periodic Table
- Topic: Drawing Structures
- Replies: 3
- Views: 154
Drawing Structures
How do we know that there are several ways to draw a chemical structure?
- Sun Nov 03, 2019 6:31 pm
- Forum: Properties of Light
- Topic: Electromagnetic raditation
- Replies: 1
- Views: 103
Electromagnetic raditation
During the review session, the UA's said that we used c=h/frequency when dealing with electromagnetic radiation. What do they mean?
- Sun Nov 03, 2019 6:29 pm
- Forum: *Shrodinger Equation
- Topic: Schrondiger's Equation
- Replies: 6
- Views: 388
Schrondiger's Equation
Is there any application of this equation we need to know? or is this more of a concept we must understand?
- Thu Oct 24, 2019 10:11 pm
- Forum: Resonance Structures
- Topic: Resonance Structures
- Replies: 2
- Views: 115
Resonance Structures
Are resonance structures just bonds that can be written in different forms because of the ambiguity of the shape?
- Thu Oct 24, 2019 10:09 pm
- Forum: Octet Exceptions
- Topic: Electron Configurations
- Replies: 3
- Views: 186
Electron Configurations
What if an atom is in an excited state and not ground state? Does this change the electron configuration? If so, do the principles and rules change?
- Thu Oct 24, 2019 10:06 pm
- Forum: Ionic & Covalent Bonds
- Topic: Electron Affinity
- Replies: 5
- Views: 283
Electron Affinity
I am still a little confused about what electron affinity is. What I understood from the lecture is that it is the energy that is released when an electron is added to a gas phase atom. How do we know an atom is in gas phase or are all atoms in gas phase?
- Thu Oct 24, 2019 10:03 pm
- Forum: Ionic & Covalent Bonds
- Topic: Threshold Energy
- Replies: 4
- Views: 267
Threshold Energy
Is the threshold energy something that can be calculated or is it a given value that can not be found through an equation?
- Thu Oct 24, 2019 9:58 pm
- Forum: Ionic & Covalent Bonds
- Topic: Isoelectronic Atoms
- Replies: 6
- Views: 354
Isoelectronic Atoms
Are isoelectronic atoms just elements with the same number of electrons?
Is there anything else we should know about these?
Is there anything else we should know about these?
- Tue Oct 15, 2019 8:28 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydbergs Equation
- Replies: 3
- Views: 144
Rydbergs Equation
I know that Lavelle mentioned that he prefers us to not use the Rydberg equation; however, I wasn't exactly sure why he wants us to use a different equation. Can someone help me out?
- Tue Oct 15, 2019 8:26 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Quantum Numbers
- Replies: 2
- Views: 212
Quantum Numbers
What do the 4 quantum numbers represent as in n, l, ml and ms?
- Tue Oct 15, 2019 8:25 pm
- Forum: *Shrodinger Equation
- Topic: Schrondiger's Wave Function Equation
- Replies: 4
- Views: 286
Schrondiger's Wave Function Equation
Lavelle had mentioned that psi represents the height of a wave function at position x, y, and x. While (psi)^2 represents the probability of finding an electron. I wasn't sure what he meant; does he mean it represents the probability of finding an electron in a certain orbital?
- Tue Oct 15, 2019 8:25 pm
- Forum: *Shrodinger Equation
- Topic: Schrondiger's Wave Function Equation
- Replies: 1
- Views: 144
Schrondiger's Wave Function Equation
Lavelle had mentioned that psi represents the height of a wave function at position x, y, and x. While (psi)^2 represents the probability of finding an electron. I wasn't sure what he meant; does he mean it represents the probability of finding an electron in a certain orbital?
- Tue Oct 15, 2019 8:14 pm
- Forum: DeBroglie Equation
- Topic: De Broglie's Equation
- Replies: 17
- Views: 550
Re: De Broglie's Equation
De Broglie used light in order to derive the equation. The equation will work for any particle with momentum and it has a wavelength with its properties.
- Sat Oct 12, 2019 6:19 pm
- Forum: DeBroglie Equation
- Topic: Circular standing waves
- Replies: 4
- Views: 143
Re: Circular standing waves
Are you talking about the diffraction waves that were presented at the start of class or the waves that were surrounding the nucleus?
- Sat Oct 12, 2019 6:16 pm
- Forum: DeBroglie Equation
- Topic: De Broglie's Equation
- Replies: 13
- Views: 476
Re: De Broglie's Equation
Responding to the person above, for E=hv, the v represents frequency. This is not the same symbol that is used for Debroglie's question which it wavelength= h (plank's constant)/, p (momentum). Momentum is also equal to mass x velocity, which is not the same as the v representing frequency.
- Sat Oct 12, 2019 6:11 pm
- Forum: Properties of Electrons
- Topic: Wavelike vs Particle-like Behavior
- Replies: 6
- Views: 233
Re: Wavelike vs Particle-like Behavior
Lavelle has mentioned that an electron was wavelike behavior when it is able to travel through a slight and it is present in more than one place so it looks like a wave.
- Sat Oct 12, 2019 6:06 pm
- Forum: Photoelectric Effect
- Topic: Wave-like Properties
- Replies: 4
- Views: 132
Re: Wave-like Properties
According to DeBroglies equation, the higher the mass, the smaller the wavelength and are more likely to have particle-like behavior.
- Sat Oct 12, 2019 6:04 pm
- Forum: Photoelectric Effect
- Topic: Mass of Electron
- Replies: 6
- Views: 264
Re: Mass of Electron
Electrons have a very small mass. Most of the mass of an element depends on the mass of protons and neutrons. The approximate mass of an electron is about 9.10938 x 10^-28 g.
- Sat Oct 05, 2019 9:44 pm
- Forum: *Shrodinger Equation
- Topic: What does this even mean?
- Replies: 4
- Views: 744
Re: What does this even mean?
The purpose of Schondigers equation is to allow us to find how states evolve over time. However, this will not be emphasized in this course.
- Sat Oct 05, 2019 9:40 pm
- Forum: Significant Figures
- Topic: Clarification with sig figs
- Replies: 6
- Views: 186
Re: Clarification with sig figs
It is best to hold onto a couple significant figures until the end. This will make sure your answer is the most accurate with the given quantities in the question.
- Sat Oct 05, 2019 9:39 pm
- Forum: SI Units, Unit Conversions
- Topic: Unit Conversion
- Replies: 5
- Views: 152
Re: Unit Conversion
In order to easier remember how to convert, just think if the prefixes and number. For example, kilo would be 1000. Centi would be 1/100. Mili would be 1/1000.
- Sat Oct 05, 2019 9:33 pm
- Forum: Empirical & Molecular Formulas
- Topic: Fundamental m.19
- Replies: 3
- Views: 220
Re: Fundamental m.19
Here are some of the steps you should take in order to get to your answer: 1. convert grams of CO2, H2O, and N2 to moles in order to have a universal unit you could compare the elements to. 2. break down the elements to the grams that were given in the question, break CO2 down by the mass given 0.68...
- Sat Oct 05, 2019 9:16 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: HW question 2.17 [ENDORSED]
- Replies: 7
- Views: 1773
Re: HW question 2.17 [ENDORSED]
The quantum number of l corresponds to the shape of the orbital. Quantum numbers specify specific spacial qualities of an orbital. l=0 corresponds to the s orbital. While l=1 corresponds to the p-orbital, l=2 corresponds to the d orbital and l=3 corresponds to the f-orbital.