Search found 104 matches
- Wed Mar 11, 2020 11:50 am
- Forum: *Organic Reaction Mechanisms in General
- Topic: K meaning
- Replies: 29
- Views: 2361
Re: K meaning
the constant is also on the constant sheet!
- Wed Mar 11, 2020 11:49 am
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Catalysts vs. Intermediates
- Replies: 8
- Views: 923
Re: Catalysts vs. Intermediates
an intermediate is seen in the product side first and disappears later, while a catalyst is added first to the reactant side and than reappears later on the product side.
- Wed Mar 11, 2020 11:45 am
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: adsorption
- Replies: 2
- Views: 278
adsorption
the most important thing to know about this is that it just means that the reactants sit on the surface of a catalyst rather than be absorbed, right? is there anything else we should know about adsorption?
- Wed Mar 11, 2020 11:43 am
- Forum: General Rate Laws
- Topic: intermediates
- Replies: 12
- Views: 755
intermediates
intermediates should not be listed in the rate laws, right? but rather replaced with the products that the intermediates depend on?
- Mon Mar 09, 2020 10:01 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Study Advice
- Replies: 73
- Views: 7358
Re: Study Advice
for me, lyndon's review sessions are the best and most beneficial
- Sun Mar 08, 2020 4:28 pm
- Forum: General Rate Laws
- Topic: the variable A
- Replies: 4
- Views: 350
the variable A
i don't quite understand what the variable "A" in the Arrhenius Equation means (k=Ae^-Ea/RT), can someone please explain it to me, thanks!!
- Sun Mar 08, 2020 4:26 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Microscopic Reversibility
- Replies: 3
- Views: 248
Re: Microscopic Reversibility
microscopic reversibility is when a reaction has the same intermediates (same pathway) in both the forward and reverse directions.
- Wed Mar 04, 2020 7:51 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: electrolytic cells
- Replies: 1
- Views: 257
electrolytic cells
i'm a little confused on the whole concept of electrolysis and electrolytic cells. can someone briefly summarize main points of what we should know?
- Wed Mar 04, 2020 5:53 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: standard potential of galvanic cell
- Replies: 1
- Views: 208
standard potential of galvanic cell
just to clarify, when using the formula Ecell=Ecathode-Eanode, when given the potential of one of the half reactions, we do NOT change the sign if its the backwards reaction right? So like if Cu 2+ + 2e --> Cu is +0.34 V, and the half reaction was Cu --> Cu 2+ + 2e, we would still use +0.34 V and no...
- Mon Mar 02, 2020 5:03 pm
- Forum: Administrative Questions and Class Announcements
- Topic: test 2 worksheet
- Replies: 3
- Views: 375
test 2 worksheet
are there any worksheets for preparation for test 2? thank you!!!
- Fri Feb 28, 2020 1:35 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: diamond
- Replies: 4
- Views: 332
diamond
can someone explain how a diamond is kinetically stable and thermodynamically unstable with respect to graphite?
- Fri Feb 28, 2020 1:33 pm
- Forum: General Rate Laws
- Topic: rates
- Replies: 1
- Views: 208
rates
if a problem tells us to find the rate of a reaction, should we find the average rate or instantaneous rate? would the question specify it?
- Fri Feb 28, 2020 1:21 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: finding top of your series
- Replies: 3
- Views: 306
finding top of your series
i'm a little confused on how to find the top of your series in a redox reaction (ie the strongest oxidizing agent in reduction). can someone please explain, thank you!
- Fri Feb 28, 2020 1:13 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Galvanic Cells
- Replies: 10
- Views: 604
Re: Galvanic Cells
the galvanic cell will never have a negative Ecell right? because it's always a spontaneous reaction?
- Fri Feb 28, 2020 1:10 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: platinum
- Replies: 5
- Views: 418
platinum
should we always use platinum for our cell diagram if we are not given a solid metal in the reaction?
- Thu Feb 20, 2020 2:45 pm
- Forum: Van't Hoff Equation
- Topic: Significance of Van't Hoff Equation
- Replies: 8
- Views: 628
Re: Significance of Van't Hoff Equation
the van't hoff equation (assuming that delta H and delta S are constant over all temperatures), calculates the equilibrium constant (K) at different temperatures.
- Thu Feb 20, 2020 2:41 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: salt bridge
- Replies: 5
- Views: 334
salt bridge
is the only thing we learned about salt bridges was that it allows ion transfer for the 2 solution to stay neutral? is there more information we need to know about salt bridges?
- Thu Feb 20, 2020 2:38 pm
- Forum: Balancing Redox Reactions
- Topic: Oxidation Numbers
- Replies: 5
- Views: 350
Re: Oxidation Numbers
halogens are usually -1, oxygen is -2 (with exceptions), hydrogen is -1, and pure elements are 0. you can also sometimes tell by the group/charge of the element.
- Thu Feb 20, 2020 2:34 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: electron motor force [ENDORSED]
- Replies: 1
- Views: 177
electron motor force [ENDORSED]
can someone explain to me the electron motor force and its significance?
- Thu Feb 20, 2020 2:32 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: gas constant for gibbs free energy
- Replies: 5
- Views: 443
gas constant for gibbs free energy
when using the gas constant for the gibbs free energy equation (delta G= -RTlnK), do you always use 8.314 J/mol.K?
- Sun Feb 16, 2020 12:29 pm
- Forum: Ideal Gases
- Topic: pv=nrt
- Replies: 19
- Views: 1226
Re: pv=nrt
yes, and make sure to use the right gas constant for the units!
- Sun Feb 16, 2020 12:28 pm
- Forum: Van't Hoff Equation
- Topic: What is this? [ENDORSED]
- Replies: 7
- Views: 508
Re: What is this? [ENDORSED]
would it be unitless since it is calculating K?
- Sun Feb 16, 2020 12:24 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Delta E
- Replies: 11
- Views: 823
Re: Delta E
both delta e and delta u represent the change in internal energy, and i think on the constant sheet it is also used interchangeably
- Sun Feb 16, 2020 12:21 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Midterm Curve
- Replies: 45
- Views: 2371
Re: Midterm Curve
he never curves actual tests, however he changes the grading scale for the final grades. for example, if you get 50% of all the possible points in the course, you pass the class with a C-, and based on how everyone did this quarter, he will adjust the grading scale accordingly.
- Wed Feb 12, 2020 4:36 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: State Functions
- Replies: 4
- Views: 380
Re: State Functions
it was PD TV HUGS. i don't remember what the actual words they came up with were haha
- Tue Feb 11, 2020 10:23 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: memorize
- Replies: 14
- Views: 884
memorize
Do we have to memorize any of the entropies' of substances, such as water or co2?
- Sat Feb 08, 2020 12:08 pm
- Forum: General Science Questions
- Topic: Midterm
- Replies: 17
- Views: 1032
Re: Midterm
the pizza rolls review worksheet that will be gone over tomorrow is based off of old test questions! i find that review session the most helpful
- Sat Feb 08, 2020 12:06 pm
- Forum: Calculating Work of Expansion
- Topic: Units for -PV
- Replies: 5
- Views: 202
Re: Units for -PV
1 L atm= 101.325 J is on the constant sheet for tests which can be found on the chem 14b home page!
- Thu Feb 06, 2020 2:20 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 constant
- Replies: 2
- Views: 123
boltzmann constant
the boltzmann constant will always be given to us on tests right? thanks!
- Thu Feb 06, 2020 2:14 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: degeneracy
- Replies: 2
- Views: 86
degeneracy
so when calculating degeneracy, we also use Avogadro's constant when calculating the number of atoms right? so for example if there was only one mol of something, it would be the number of positions^(6.026 x 10^23)?
- Thu Feb 06, 2020 2:10 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: irreversible vs reversible
- Replies: 3
- Views: 132
irreversible vs reversible
can someone explain to me the difference between an irreversible and reversible path? thank you!
- Sat Feb 01, 2020 5:29 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: isolated system
- Replies: 13
- Views: 644
isolated system
can someone give examples of an isolated system?
- Sat Feb 01, 2020 5:06 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Degeneracy
- Replies: 3
- Views: 220
Re: Degeneracy
they were depictions of the different states the atoms can be in. all the microstates have the same energy!
- Sat Feb 01, 2020 5:02 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: kinetics
- Replies: 8
- Views: 247
kinetics
can someone explain the idea of kinetics please, thanks!
- Wed Jan 29, 2020 6:07 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: memorize
- Replies: 6
- Views: 270
memorize
will we need to memorize the heat capacity for different elements, or will it always be given on problems?
- Wed Jan 29, 2020 5:15 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: homework question 4A.3
- Replies: 6
- Views: 332
Re: homework question 4A.3
^^to answer the conversion question, you would use 1 L*atm = 101.325 J conversion. it's on lavelle's constant and equations sheet!
- Wed Jan 22, 2020 9:45 pm
- Forum: Student Social/Study Group
- Topic: midterm/final
- Replies: 12
- Views: 2279
Re: midterm/final
the tests are usually easier, with the questions kind of mirroring the homework problems. The midterm/final is much longer and contains complicated questions, from my experience last year.
- Wed Jan 22, 2020 6:30 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: test 1 worksheet
- Replies: 1
- Views: 107
test 1 worksheet
does anyone have the answers for the test 1 practice worksheet? thank you so much!!
- Wed Jan 22, 2020 6:08 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Using Kc Vs Kp
- Replies: 22
- Views: 1094
Re: Using Kc Vs Kp
if all the components are gases, use kp. if all aqueous, use kc. (unless the test question says otherwise)
- Wed Jan 22, 2020 6:03 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: approximation
- Replies: 5
- Views: 202
Re: approximation
10^-3
- Tue Jan 21, 2020 5:00 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: salt and water reactions
- Replies: 2
- Views: 144
salt and water reactions
is there a way to easily know what the polyprotic acids will break down into? i'm having trouble figuring out the reaction equations.
- Sun Jan 19, 2020 1:40 am
- Forum: Ideal Gases
- Topic: inert gas
- Replies: 5
- Views: 272
inert gas
can someone define what an inert gas is? and how to tell which gases are inert?
- Sun Jan 19, 2020 1:29 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: le chatelier's principle
- Replies: 3
- Views: 149
le chatelier's principle
can someone explain to me le chatelier's principle and how we use it, thanks!
- Sun Jan 19, 2020 1:19 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: lewis structure
- Replies: 11
- Views: 486
lewis structure
we won't need to draw lewis structures for reactions/products, or depict acids/bases on tests for 14b right?
- Sun Jan 19, 2020 1:17 am
- Forum: Ideal Gases
- Topic: Topics on Test 1
- Replies: 37
- Views: 1500
Re: Topics on Test 1
test 1 will be everything up until acids and bases!
- Sun Jan 19, 2020 1:16 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: homework 5G9
- Replies: 1
- Views: 105
homework 5G9
Hi, I'm a little confused on 5G9 and how to tell if certain amounts/etc. are going to stay the same or not. Can someone pls explain!
- Thu Jan 09, 2020 4:12 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: How to interpret reactions based on quotient in relation to equilibrium constant
- Replies: 5
- Views: 216
Re: How to interpret reactions based on quotient in relation to equilibrium constant
If Q=K, the reaction is at equilibrium If Q>K, the reaction is at post-equilibrium. the reverse reaction will proceed because there's too much product or not enough reactants. If Q<K, the reaction is a pre-equilibrium. the forward reaction will proceed because not enough product has been made yet.
- Thu Jan 09, 2020 4:00 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kp v. Kc
- Replies: 5
- Views: 221
Re: Kp v. Kc
My TA said if the reaction contains all gases, assume Kp. Otherwise, they would tell us in the directions of the problem to find Kc.
- Thu Jan 09, 2020 3:57 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: confused about ice table
- Replies: 5
- Views: 149
confused about ice table
can someone explain to me what an ice table is and how we use it?
- Thu Jan 09, 2020 3:54 pm
- Forum: Ideal Gases
- Topic: Understanding Q
- Replies: 19
- Views: 786
Re: Understanding Q
Q tells what point the reaction is at in relation to K, therefore it is solved the same way as K.
- Thu Jan 09, 2020 3:51 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: solid/liquid
- Replies: 7
- Views: 211
solid/liquid
When there's a solid or liquid in the reaction, I know we disregard it. Do we just substitute it with a one when writing the K constant?
- Sat Dec 07, 2019 10:44 pm
- Forum: Calculating the pH of Salt Solutions
- Topic: weak acid/base and pH
- Replies: 9
- Views: 803
weak acid/base and pH
So in general a weak base will raise the pH and a weak acid will lower the pH, right?
cobaltate
in the naming examples sheet on lavelle's website it says K3[CoF6] is potassium-hexa-fluoro-cobaltate(III). I was assuming the net charge of this is 0 because it doesn't say otherwise, so why is it cobaltate?
- Thu Dec 05, 2019 6:18 pm
- Forum: Hybridization
- Topic: d hybridized orbital confusion
- Replies: 7
- Views: 382
Re: d hybridized orbital confusion
i'm pretty sure after the sp
so for example: sp3d2
so for example: sp3d2
- Thu Dec 05, 2019 6:15 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Determining Polarity
- Replies: 2
- Views: 115
Re: Determining Polarity
polar, also none of the dipole moments can ever cancel out in T-shape if i'm not mistaken
- Thu Dec 05, 2019 5:21 pm
- Forum: Calculating the pH of Salt Solutions
- Topic: Wednesday Lecture 12/4
- Replies: 4
- Views: 399
Re: Wednesday Lecture 12/4
I think that was more chem 14b if I am not mistaken, and we don't really need to know that
- Thu Dec 05, 2019 5:17 pm
- Forum: Hybridization
- Topic: hybridization
- Replies: 1
- Views: 103
hybridization
can anyone briefly explain hybridization and what we're going to need to know for the final about it?
- Thu Dec 05, 2019 2:23 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: water
- Replies: 3
- Views: 169
water
I don't understand why water is monodentate? I thought since there are two hydrogens attached to the oxygen molecule, it should be polydentate?
- Sat Nov 30, 2019 9:50 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: What to know for the final
- Replies: 8
- Views: 477
Re: What to know for the final
i don't think so. we should just stick with what has been assigned for reading and homework and what dr. lavelle talks about in lecture!
- Sat Nov 30, 2019 9:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam Content
- Replies: 14
- Views: 825
Re: Final Exam Content
it's cumulative, based on everything we've learned starting from week 1
- Sat Nov 30, 2019 9:47 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Difficulty
- Replies: 14
- Views: 958
Re: Difficulty
this class has been very difficult for me, since I only took honors chem sophomore year of high school. it has been taking a while for me to get use to chemistry again :(
- Sat Nov 30, 2019 9:45 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Determining Polarity
- Replies: 10
- Views: 625
Re: Determining Polarity
if the net dipoles all cancel out (bc of electronegativities), then it will be nonpolar (if they all cancel out)
- Sat Nov 30, 2019 9:37 pm
- Forum: Hybridization
- Topic: Hybridization
- Replies: 7
- Views: 380
Re: Hybridization
I think that's it! As long as you can do the homework problems with that, you should be good.
- Thu Nov 21, 2019 9:11 pm
- Forum: Dipole Moments
- Topic: boiling point example
- Replies: 3
- Views: 339
boiling point example
in one of the worksheet answer key it says that the boiling point of KCl is higher than KI. however I thought that since I is bigger than Cl, KI should have a higher boiling point?
- Thu Nov 21, 2019 9:06 pm
- Forum: Bond Lengths & Energies
- Topic: Boiling Point
- Replies: 7
- Views: 1950
Re: Boiling Point
when the surface area increases, there's more room for temporary induced dipole interactions to occur, therefore more LDFs, therefore a higher boiling point.
- Thu Nov 21, 2019 4:25 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: bond angles
- Replies: 3
- Views: 211
bond angles
when the bond angle is less than what's normal (for example, bent with 2 lone pairs is less than 109.5), do we have to memorize the exact number (For example, water is 104.5)? Or is saying less than 109.5 fine?
- Thu Nov 21, 2019 2:13 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: electron-pair geometry vs molecular geometry
- Replies: 3
- Views: 257
electron-pair geometry vs molecular geometry
What is the difference between electron-pair geometry and molecular geometry? Should we know both or should we just know the molecular geometry?
- Thu Nov 21, 2019 12:59 am
- Forum: Hybridization
- Topic: for test 2
- Replies: 7
- Views: 280
for test 2
should we know hybridization for test 2?
- Thu Nov 14, 2019 8:12 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: varying VSEPRs
- Replies: 7
- Views: 475
varying VSEPRs
Is there ever going to be a case where a molecule could have 2 different VSEPR models?
- Thu Nov 14, 2019 8:11 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Shape Name
- Replies: 17
- Views: 913
Re: Molecular Shape Name
Knowing all of them will be the best I think, test-wise
- Thu Nov 14, 2019 8:02 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lewis Structures & VSEPR
- Replies: 9
- Views: 520
Re: Lewis Structures & VSEPR
I think drawing the Lewis structure out first is helpful when determining the VESPR model, but I don't know if it's necessary. However, on tests, they might expect us to draw it out.
- Thu Nov 14, 2019 8:01 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 2
- Replies: 11
- Views: 578
Re: Test 2
I think going over outline 4 and doing all the homework problems would be a good way to study.
- Thu Nov 14, 2019 7:58 pm
- Forum: Bond Lengths & Energies
- Topic: Bond lengths
- Replies: 8
- Views: 419
Re: Bond lengths
I think we should know concept wise
- Thu Nov 07, 2019 8:22 pm
- Forum: Ionic & Covalent Bonds
- Topic: coordinate covalent bond
- Replies: 2
- Views: 190
coordinate covalent bond
can someone explain what a coordinate covalent bond is?
- Thu Nov 07, 2019 8:05 pm
- Forum: Lewis Acids & Bases
- Topic: lewis acid vs base
- Replies: 2
- Views: 231
lewis acid vs base
is the lewis acid and base valid for every single compound? or is it just some compounds that have a lewis acid and base?
- Thu Nov 07, 2019 8:00 pm
- Forum: Bond Lengths & Energies
- Topic: bond length rules
- Replies: 2
- Views: 288
bond length rules
are there exceptions to the bond length rules (ie the triple bond is the shortest and strongest while the single bond is the longest and weakest)
- Thu Nov 07, 2019 7:59 pm
- Forum: Bond Lengths & Energies
- Topic: dissociation energy
- Replies: 6
- Views: 436
dissociation energy
how do we calculate the dissociation energy? Is there a formula?
- Tue Nov 05, 2019 1:29 am
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: lyman and balmer
- Replies: 3
- Views: 233
lyman and balmer
I'm still confused on how to use the lyman and balmer series. Can someone please explain this to me?
- Thu Oct 31, 2019 2:36 pm
- Forum: Octet Exceptions
- Topic: expanded valence shell confusion
- Replies: 3
- Views: 319
expanded valence shell confusion
hi! can someone explain to me the expanded valence shell. i'm not sure I understand it completely!
- Thu Oct 31, 2019 2:32 pm
- Forum: Ionic & Covalent Bonds
- Topic: Valence Electrons?
- Replies: 15
- Views: 1067
Re: Valence Electrons?
regarding the picture posted, I thought Cl has 7 valence electrons, and the chart says it has 5? I'm pretty sure that chlorine has 7 valence electrons? I could be wrong, unless I'm reading the picture wrong.
- Thu Oct 31, 2019 2:27 pm
- Forum: Lewis Structures
- Topic: valence electrons of nonmetals
- Replies: 3
- Views: 279
valence electrons of nonmetals
how do you figure out the valence electron # of nonmetals/transition metals?
- Thu Oct 31, 2019 2:24 pm
- Forum: Electronegativity
- Topic: Electron Negativity vs affinity?
- Replies: 5
- Views: 192
Re: Electron Negativity vs affinity?
electron affinity is the energy released when electrons are added to a gas phase atom. electronegativity is the electron pulling power of an atom.
- Thu Oct 31, 2019 2:16 pm
- Forum: Lewis Structures
- Topic: lewis structures
- Replies: 4
- Views: 186
lewis structures
Do you think there's going to be different acceptable answers Lewis structure drawings on the midterm?
- Wed Oct 23, 2019 8:48 pm
- Forum: Trends in The Periodic Table
- Topic: bond length
- Replies: 9
- Views: 465
bond length
should we know how to calculate the bond lengths of the lewis structures? is there even a way to do that?
- Wed Oct 23, 2019 8:41 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: coulomb potential energy
- Replies: 4
- Views: 391
coulomb potential energy
can someone explain to me the electrostatic/coulomb potential energy and its significance? I know it's proportional to (q1)(q2)/r.
- Wed Oct 23, 2019 8:31 pm
- Forum: Trends in The Periodic Table
- Topic: Location of elements
- Replies: 12
- Views: 734
Re: Location of elements
I think we should know it, and I'm assuming that it'd be really helpful for the tests!
- Wed Oct 23, 2019 8:26 pm
- Forum: Trends in The Periodic Table
- Topic: Exceptions
- Replies: 3
- Views: 239
Re: Exceptions
the ionization energies decrease down a group and increase across a period. however, it's only for gases
- Wed Oct 23, 2019 8:24 pm
- Forum: Trends in The Periodic Table
- Topic: Aufbau Principle
- Replies: 11
- Views: 624
Aufbau Principle
Can someone explain what the Aufbau/building up principle is?
- Wed Oct 23, 2019 8:20 pm
- Forum: Ionic & Covalent Bonds
- Topic: Week 4 Homework
- Replies: 9
- Views: 505
Re: Week 4 Homework
quantum world probably because we only started the chemical bonds section, so some of it might not make sense
- Wed Oct 16, 2019 11:21 pm
- Forum: Properties of Light
- Topic: homework 1A.3
- Replies: 8
- Views: 297
Re: homework 1A.3
when the frequency decreases, the amplitude of the wave also decreases and the wave becomes wider. the electrical field coincides with amplitude.
- Wed Oct 16, 2019 11:16 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Best Way To Study?
- Replies: 56
- Views: 3724
Re: Best Way To Study?
I like to go through each homework problem and make sure I understand how to do every one of them! I also watch the modules.
- Wed Oct 16, 2019 11:14 pm
- Forum: *Shrodinger Equation
- Topic: Schrondiger's Wave Function Equation
- Replies: 4
- Views: 319
Re: Schrondiger's Wave Function Equation
Will we have to know Schrodinger's wave function equation for future tests?
- Wed Oct 16, 2019 11:11 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Week 2 Homework Problems [ENDORSED]
- Replies: 67
- Views: 8585
Re: Week 2 Homework Problems [ENDORSED]
aphung1G wrote:Does anyone know the energy of microwaves?
Arrange the following types of photons of electromagnetic
radiation in order of increasing energy: g -rays, visible light, ultraviolet radiation, microwaves, x-rays.
microwaves would have the least energy!
- Wed Oct 16, 2019 11:07 pm
- Forum: *Black Body Radiation
- Topic: black body
- Replies: 2
- Views: 325
black body
What should we know about black bodies for upcoming tests?
- Thu Oct 10, 2019 8:53 pm
- Forum: Limiting Reactant Calculations
- Topic: percent yield
- Replies: 10
- Views: 868
percent yield
should we always show the percent yields in the limiting reactant problems, or just when it's specifically asked?
- Thu Oct 10, 2019 8:52 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Test 1 [ENDORSED]
- Replies: 107
- Views: 29645
Re: Test 1 [ENDORSED]
We don't need a blue book! Good luck!
- Thu Oct 10, 2019 8:51 pm
- Forum: Properties of Electrons
- Topic: work needed
- Replies: 2
- Views: 124
work needed
should we draw diagrams for all the electron problems? Is it a necessity?
- Thu Oct 10, 2019 8:50 pm
- Forum: Significant Figures
- Topic: for test 1
- Replies: 3
- Views: 312
for test 1
for test 1, will we get points off if we round to the wrong significant figure?
- Thu Oct 10, 2019 8:49 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: for test 1
- Replies: 14
- Views: 991
for test 1
should we know the definitions verbatim of accuracy, precision, mole, etc. for the test?
- Thu Oct 03, 2019 9:37 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: avogadro number
- Replies: 7
- Views: 751
avogadro number
Can someone explain to me what exactly the avogadro number is and how we use it?