Search found 94 matches
- Mon Mar 09, 2020 10:10 pm
- Forum: Phase Changes & Related Calculations
- Topic: Absorb means "+"?
- Replies: 4
- Views: 427
Re: Absorb means "+"?
The chamber itself is releasing heat, not absorbing, giving a -q
- Mon Mar 09, 2020 5:24 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: k' vs kr
- Replies: 13
- Views: 767
Re: k' vs kr
kr is the rate constant of the reaction, while k' is the rate of the reverse reaction, their relation can be shown as kr/k'=K
- Mon Mar 09, 2020 5:22 pm
- Forum: Biological Examples
- Topic: Catalysts
- Replies: 7
- Views: 802
Re: Catalysts
From my understanding in lecture, the catalyst in this reaction is NO, not O2
- Mon Mar 09, 2020 5:21 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Week 9 Wednesday lecture
- Replies: 7
- Views: 420
Re: Week 9 Wednesday lecture
CO is zero order and because it is not in the slow step e assume its concentration does not have an affect overall
- Mon Mar 09, 2020 5:20 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: units
- Replies: 11
- Views: 706
Re: units
Mols per liter per time unit which is usually in seconds
- Mon Mar 02, 2020 10:43 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: text problem 4J.7
- Replies: 2
- Views: 210
Re: text problem 4J.7
I believe it is omitted because it is in its most stable state
- Mon Mar 02, 2020 10:35 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: K
- Replies: 12
- Views: 644
Re: K
You would include whatever has (g) and (aq) from the reaction, and not solids or liquids
- Mon Mar 02, 2020 10:34 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: equilibrium concentrations
- Replies: 7
- Views: 498
Re: equilibrium concentrations
Equilibrium concentration should be in Molarity which is mols/liter
- Mon Mar 02, 2020 10:34 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: What to exclude in K
- Replies: 9
- Views: 565
Re: What to exclude in K
Yes because (g) and (aq) are included in the formula for K
- Mon Mar 02, 2020 10:31 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 5.55
- Replies: 3
- Views: 282
Re: 5.55
Yes you would in order to find the equilibrium concentrations
- Tue Feb 25, 2020 9:49 pm
- Forum: Balancing Redox Reactions
- Topic: adding e-
- Replies: 7
- Views: 528
Re: adding e-
You add it on the side with the higher charge, and you add based on however much is needed for it to be balanced.
- Tue Feb 25, 2020 9:47 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: G(not) and G
- Replies: 15
- Views: 699
Re: G(not) and G
ASetlur_1G wrote:Is it correct to say that G(not) is used at equilibrium (K value) and G is used for other conditions (Q value)?
Yes this is essentially correct to say
- Tue Feb 25, 2020 9:46 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: n in the change in free gibbs energy equation
- Replies: 4
- Views: 288
Re: n in the change in free gibbs energy equation
n refers to the moles of electrons so the coefficient in front of the electrons when you balance the half reactions
- Tue Feb 25, 2020 9:35 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagrams
- Replies: 4
- Views: 292
Re: Cell Diagrams
In the diagram the anode is on the left so that is where the oxidation should be
- Tue Feb 25, 2020 9:32 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Anode and Cathode
- Replies: 4
- Views: 354
Re: Anode and Cathode
In the anode is where oxidation occurs (so electrons are lost) and the cathode is where reduction occurs (electrons are gained here) and the flow is from anode to cathode.
- Tue Feb 18, 2020 5:02 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Delta H
- Replies: 10
- Views: 871
Re: Delta H
You would need to use the delta H equation and work with what you are given in the problem, mainly find what is constant and manipulate the equation to reflect that while looking for delta H.
- Tue Feb 18, 2020 4:44 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Heat Capacity for Calorimeters.
- Replies: 4
- Views: 470
Re: Heat Capacity for Calorimeters.
PranaviKolla2B wrote:What is the difference between a calorimeter and a bomb calorimeter?
I believe a calorimeter is just a thermally insulated container while a bomb calorimeter is a sealed container that is metal in water which is also in an insulated container.
- Tue Feb 18, 2020 4:36 pm
- Forum: Balancing Redox Reactions
- Topic: Whats the difference between oxidizing agent and oxiadation
- Replies: 6
- Views: 312
Re: Whats the difference between oxidizing agent and oxiadation
Oxidation means losing electrons, while the oxidizing agent is doing the oxidizing to the other species, so it is then being reduced.
- Tue Feb 18, 2020 4:35 pm
- Forum: Balancing Redox Reactions
- Topic: Reducing/Oxidizing Agent
- Replies: 4
- Views: 254
Re: Reducing/Oxidizing Agent
The reducing agent does the reducing, so in this process it is oxidized. The oxidizing agent does the oxidizing, so it is reduced.
- Tue Feb 18, 2020 4:25 pm
- Forum: Balancing Redox Reactions
- Topic: Half Reactions
- Replies: 7
- Views: 449
Re: Half Reactions
It is very helpful to split into half reactions when we are trying to balance them, so I think that is why
- Sun Feb 16, 2020 8:37 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Spontaneous
- Replies: 13
- Views: 745
Re: Spontaneous
If delta G is negative then it is spontaneous, and if it is positive then it is not spontaneous.
- Sun Feb 16, 2020 8:35 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Midterm Curve
- Replies: 45
- Views: 2130
Re: Midterm Curve
I dont think he will curve the midterm considering the final grade is technically curved
- Sun Feb 16, 2020 8:32 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Standard Enthalpies of Formation
- Replies: 10
- Views: 516
Re: Standard Enthalpies of Formation
Yes, this applied to elements in their standard state
- Sun Feb 16, 2020 8:31 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bond Enthalpies with Molecules
- Replies: 4
- Views: 274
Re: Bond Enthalpies with Molecules
To calculate this you would add together the bonds broken, then subtract that number by bonds formed.
- Sun Feb 16, 2020 8:29 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: endo/exo and temp
- Replies: 12
- Views: 1084
Re: endo/exo and temp
You can look at adding heat as adding a product or reactant depending on whether it is exothermic or endothermic. If you are adding a product, then it will shift to reactants, and vice versa.
- Mon Feb 03, 2020 9:39 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: q vs H
- Replies: 9
- Views: 455
Re: q vs H
This refers to q.
- Mon Feb 03, 2020 9:34 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hess's Law
- Replies: 7
- Views: 478
Re: Hess's Law
You basically alter the reactions to get the reaction you want, by multiplying or moving reactants to products and products to reactants
- Mon Feb 03, 2020 9:28 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: First Law
- Replies: 6
- Views: 139
Re: First Law
The 1st law of thermodynamics is conservation of energy, so the energy of an isolated system must remain constant. This gives delta u = q + w = 0
- Mon Feb 03, 2020 9:17 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: endo vs exo
- Replies: 8
- Views: 176
Re: endo vs exo
Delta H would be positive since breaking a bond would be considered an endothermic reaction
- Mon Feb 03, 2020 9:15 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: reversing signs
- Replies: 5
- Views: 243
Re: reversing signs
Whether or not delta H is positive or negative depends on the reaction (if it is endothermic or exothermic)
- Mon Jan 27, 2020 5:59 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE
- Replies: 20
- Views: 857
Re: ICE
You use an ICE table when you are looking for the concentration of something. Ka helps to solve for x
- Mon Jan 27, 2020 5:57 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kp to Kc
- Replies: 11
- Views: 533
Re: Kp to Kc
Yes, because it is a gas and we include gases in Kc. (just depends on state given)
- Mon Jan 27, 2020 5:56 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 5% Rule
- Replies: 9
- Views: 281
Re: 5% Rule
You go back and use the quadratic formula only if it is more than 5%
- Mon Jan 27, 2020 5:55 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Ka and Kb
- Replies: 10
- Views: 324
Re: Ka and Kb
It would be a strong acid instead of a weak acid
- Mon Jan 27, 2020 5:53 pm
- Forum: Phase Changes & Related Calculations
- Topic: sig figs
- Replies: 6
- Views: 199
Re: sig figs
Moles and liters count for sig figs in this question
- Tue Jan 21, 2020 4:13 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Gas Constant (R)
- Replies: 3
- Views: 90
Re: Gas Constant (R)
Which one you would use depends on the units you are initially given in the problem
- Tue Jan 21, 2020 4:12 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: H2O in K Expressions
- Replies: 6
- Views: 296
Re: H2O in K Expressions
Since it is H2O as a gas, you would still include it.
- Tue Jan 21, 2020 4:11 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 5% approximation rule
- Replies: 5
- Views: 164
Re: 5% approximation rule
I believe it is anything less than 10^-3
- Tue Jan 21, 2020 4:10 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE table
- Replies: 5
- Views: 202
Re: ICE table
You use the stoichiometric coefficients
- Tue Jan 21, 2020 4:08 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: using K
- Replies: 5
- Views: 98
Re: using K
Kp is for pressure and Kc is in terms of molarity
- Wed Jan 15, 2020 1:10 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Autoprotolysis
- Replies: 8
- Views: 191
Re: Autoprotolysis
Autoprotolysis can be shown using H2O and is the proton transferring of two of the same atom
- Wed Jan 15, 2020 1:05 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Reaction Quotient Units
- Replies: 10
- Views: 278
Re: Reaction Quotient Units
Q does not have specific units because it is a ratio.
- Wed Jan 15, 2020 1:02 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Hw for next week
- Replies: 19
- Views: 714
Re: Hw for next week
Yes it should be okay, last quarter as long as it was recent we received credit. It is also still pretty early since it's week 2 and we went over it last week.
- Wed Jan 15, 2020 1:01 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: equilibrium concentration with gases
- Replies: 7
- Views: 189
Re: equilibrium concentration with gases
Yes in this case you can ignore pressure
- Wed Jan 15, 2020 12:59 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Q=K
- Replies: 14
- Views: 603
Re: Q=K
Q can be calculated at any given moment, not only when the system is not at equilibrium, so Q=K is when Q is calculated when it is at equilibrium.
- Tue Jan 07, 2020 9:04 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 5G.1(d)
- Replies: 3
- Views: 191
Re: 5G.1(d)
Because at equilibrium the constant is consistent so if one is higher than the other would also be higher since that constant must be maintained
- Tue Jan 07, 2020 9:02 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Very Large K
- Replies: 12
- Views: 2527
Re: Very Large K
This means that at equilibrium more products are present than reactants. In this case, a lot more
- Tue Jan 07, 2020 9:00 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Q vs K
- Replies: 13
- Views: 449
Re: Q vs K
K is used for when it is at equilibrium
- Tue Jan 07, 2020 8:57 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Concentrations at Equilibrium
- Replies: 6
- Views: 221
Re: Concentrations at Equilibrium
No, the concentration of products and reactants are not the same but the ratio that gives the equilibrium constant is the same.
- Tue Jan 07, 2020 8:56 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Question from Module Assessment Part 1A
- Replies: 3
- Views: 177
Re: Question from Module Assessment Part 1A
I believe the answer would be A, because the equilibrium constant gives a ratio which includes products and reactants at equilibrium. For example, when K is greater than one the reaction has mostly products and when K is less than one the reaction has mostly reactants.
- Sat Nov 30, 2019 12:02 am
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Lewis Acid/Base
- Replies: 5
- Views: 215
Re: Lewis Acid/Base
Lewis acids accept electrons and Lewis bases donate electrons
- Fri Nov 29, 2019 11:57 pm
- Forum: Calculating the pH of Salt Solutions
- Topic: pH vs. pOH
- Replies: 17
- Views: 2264
Re: pH vs. pOH
pH measures acidity while pOH measures basicity, and you can use one to get the other
- Fri Nov 29, 2019 11:52 pm
- Forum: Resonance Structures
- Topic: What is a Resonance "Structure"
- Replies: 12
- Views: 966
Re: What is a Resonance "Structure"
The different forms of a molecule because there can be more than one
- Fri Nov 29, 2019 11:48 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Lewis bases vs. ligands
- Replies: 3
- Views: 160
Re: Lewis bases vs. ligands
Yes all ligands are basically Lewis bases
- Fri Nov 29, 2019 11:46 pm
- Forum: Conjugate Acids & Bases
- Topic: NH3, acid or base?
- Replies: 12
- Views: 8073
Re: NH3, acid or base?
In most cases Ammonia is considered a weak base
- Mon Nov 18, 2019 11:46 pm
- Forum: Hybridization
- Topic: Pi and sigma bonds
- Replies: 4
- Views: 218
Re: Pi and sigma bonds
Because a sigma bond is stronger and more stable so there will be one of these, and pi bonds would come after the sigma bond because they are weaker.
- Mon Nov 18, 2019 11:44 pm
- Forum: Hybridization
- Topic: Energy in Hybridization
- Replies: 3
- Views: 201
Re: Energy in Hybridization
The energy of the hybridized molecule is an average of the beginning two.
- Mon Nov 18, 2019 11:42 pm
- Forum: Hybridization
- Topic: hybridization
- Replies: 4
- Views: 330
Re: hybridization
To explain bonds more thoroughly
- Mon Nov 18, 2019 11:42 pm
- Forum: Hybridization
- Topic: hybridization
- Replies: 11
- Views: 518
Re: hybridization
You begin with the Lewis Structure which then allows you to use VSEPR to predict the shape, and from these two you should know the number of regions of electron density which would then allow you to derive the hybridization.
- Mon Nov 18, 2019 11:39 pm
- Forum: Hybridization
- Topic: Hybridization
- Replies: 6
- Views: 249
Re: Hybridization
005384106 wrote:Does hybridization depend on the number of bonds between atoms?
The number of hybrid orbitals depends on the number of regions of electron density.
- Tue Nov 12, 2019 5:56 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: central atoms
- Replies: 7
- Views: 332
Re: central atoms
Cl is the central atom because it allows for stability
- Tue Nov 12, 2019 5:55 pm
- Forum: Hybridization
- Topic: Hybrid Orbitals
- Replies: 6
- Views: 668
Re: Hybrid Orbitals
Yes, but only sp3 + it corresponds with electron densities
- Tue Nov 12, 2019 5:52 pm
- Forum: Hybridization
- Topic: Pi vs Sigma Bonds
- Replies: 4
- Views: 294
Re: Pi vs Sigma Bonds
The electrons in sigma bonds are very close to the nuclei, while the electrons in a pi bond are further from the nuclei so the attraction is not as strong, thus making them easier to break.
- Tue Nov 12, 2019 5:40 pm
- Forum: Hybridization
- Topic: Determining how many electron densities
- Replies: 5
- Views: 580
Re: Determining how many electron densities
Yes they do count, so for this example it would be 4 instead of 3.
- Tue Nov 12, 2019 5:39 pm
- Forum: Hybridization
- Topic: Hybridization Models
- Replies: 4
- Views: 434
Re: Hybridization Models
I believe we will need to know how to draw them but I am not sure, regardless it would be beneficial.
- Sun Nov 10, 2019 4:40 pm
- Forum: Octet Exceptions
- Topic: Octet Exception
- Replies: 8
- Views: 567
Re: Octet Exception
I believe the f-block can store electrons too since the octet exception applies to those after the third period.
- Sun Nov 10, 2019 4:37 pm
- Forum: Hybridization
- Topic: Noble Configuration vs. Full
- Replies: 7
- Views: 312
Re: Noble Configuration vs. Full
I believe it will be specified but if not the noble gas configuration should be sufficient.
- Sun Nov 10, 2019 4:35 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Writing e- Configurations
- Replies: 15
- Views: 621
Re: Writing e- Configurations
Usually the question will specify whether they want the whole thing written out or not.
- Sun Nov 10, 2019 4:34 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polar v. Nonpolar
- Replies: 11
- Views: 2073
Re: Polar v. Nonpolar
If electrons are shared equally, it is nonpolar. If electrons are shared unequally, it is polar, which you should be able to see once you calculate formal charge.
- Sun Nov 10, 2019 4:31 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Formal Charge
- Replies: 9
- Views: 1418
Re: Formal Charge
The most electronegative atom should have the negative charge, I think it does matter what the formal charges are on individuals which would then lead to the correct charge for the overall structure.
- Wed Oct 30, 2019 6:36 pm
- Forum: Coordinate Covalent Bonds
- Topic: Coordinate covalent bond?
- Replies: 12
- Views: 1335
Re: Coordinate covalent bond?
A coordinate covalent bond is between an acid and a base where one acts and the lone electron donor and the other acts as the lone electron acceptor.
- Wed Oct 30, 2019 6:33 pm
- Forum: Ionic & Covalent Bonds
- Topic: Format of midterm?
- Replies: 12
- Views: 640
Re: Format of midterm?
I think the midterm will be all free-response because all of the practice problems given usually are as well.
- Wed Oct 30, 2019 6:30 pm
- Forum: Resonance Structures
- Topic: Resonance Structures
- Replies: 5
- Views: 212
Re: Resonance Structures
Yes, the most stable structure will make it the most accurate so it is the one you should draw.
- Wed Oct 30, 2019 6:27 pm
- Forum: Lewis Structures
- Topic: Valence Electrons from Periodic Table
- Replies: 10
- Views: 646
Re: Valence Electrons from Periodic Table
You get the number of valence electrons from whatever group the element is in.
- Wed Oct 30, 2019 6:25 pm
- Forum: Lewis Structures
- Topic: Formal charge
- Replies: 9
- Views: 234
Re: Formal charge
I would recommend counting the formal charge so you have the most similar structure to what the real structure looks like.
- Wed Oct 30, 2019 6:21 pm
- Forum: Octet Exceptions
- Topic: octet exceptions
- Replies: 5
- Views: 271
Re: octet exceptions
It may also help to understand that second row electrons can only have an octet due and count the electrons up to the 2nd row (1s^2,2s^2,2p^6) and if they are in a different row such as the third row they can take e- from the d subshell.
- Wed Oct 30, 2019 6:16 pm
- Forum: Lewis Structures
- Topic: Creating Lewis Structures
- Replies: 7
- Views: 277
Re: Creating Lewis Structures
You would put the atom that is the least electronegative or has the lowest ionization energy in the middle.
- Wed Oct 30, 2019 6:15 pm
- Forum: Hybridization
- Topic: Electrons
- Replies: 13
- Views: 1224
Re: Electrons
It means it is moving to the next orbital because it is excited.
- Wed Oct 30, 2019 6:13 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lewis Structure
- Replies: 5
- Views: 277
Re: Lewis Structure
If the negative is referring to the charge then yes you would add an electron for every negative shown and subtract an electron for every positive shown when referring to charge.
- Tue Oct 22, 2019 12:09 pm
- Forum: Trends in The Periodic Table
- Topic: Ionic Radii
- Replies: 10
- Views: 427
Re: Ionic Radii
Anions are bigger because an electron is added. Cations are smaller because a valence electron is lost.
- Tue Oct 22, 2019 12:03 pm
- Forum: Ionic & Covalent Bonds
- Topic: Week 4 Homework
- Replies: 9
- Views: 437
Re: Week 4 Homework
I don't think you will be penalized for moving on from Quantum World if you wanted to.
- Tue Oct 22, 2019 11:59 am
- Forum: Lewis Structures
- Topic: Molecule Formulas
- Replies: 5
- Views: 774
Re: Molecule Formulas
For the most part I think it will be given unless it is simple for us to figure out.
- Tue Oct 22, 2019 11:57 am
- Forum: Lewis Structures
- Topic: Drawing lewis structures
- Replies: 5
- Views: 649
Re: Drawing lewis structures
As long as the overall charge is accurate and the formal charge is matched then you should be fine.
- Tue Oct 22, 2019 11:49 am
- Forum: Lewis Structures
- Topic: Central Atom
- Replies: 7
- Views: 945
Re: Central Atom
The central atom has to be the atom with the lowest ionization energy, so I think those can be in the middle if they have a lower ionization energy than other atoms involved.
- Tue Oct 15, 2019 7:45 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Why do the orbitals of an atom only hold a certain amount of electrons?
- Replies: 7
- Views: 993
Re: Why do the orbitals of an atom only hold a certain amount of electrons?
This is due to their shape
- Tue Oct 15, 2019 6:46 pm
- Forum: *Shrodinger Equation
- Topic: What is Shrodinger's for?
- Replies: 6
- Views: 332
Re: What is Shrodinger's for?
Schrodinger's uses a function to describe an e- in an atom and uses the concept that an e- with wavelike properties and indeterminacy in momentum and position can be described by a wave function.
- Tue Oct 15, 2019 6:37 pm
- Forum: Trends in The Periodic Table
- Topic: Atomic Radius
- Replies: 16
- Views: 880
Re: Atomic Radius
The electron has to be in ground state for the radius to be measured properly, not excited.
- Tue Oct 15, 2019 6:35 pm
- Forum: Trends in The Periodic Table
- Topic: Chemistry Community
- Replies: 8
- Views: 459
Re: Chemistry Community
They are due by Sunday, Professor Lavelle explained in an email how when discussing Chemistry Community the week "ends" on Sunday.
- Tue Oct 15, 2019 6:32 pm
- Forum: DeBroglie Equation
- Topic: De Broglie's Equation
- Replies: 17
- Views: 550
Re: De Broglie's Equation
Light does not have mass, which is a required variable in the De Broglie equation.
- Thu Oct 10, 2019 3:21 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 416362
Re: Rusty on High School Chem [ENDORSED]
Definitely take advantage of all the tutoring they offer and practice as much as you can, YouTube also helps a lot.
- Thu Oct 10, 2019 3:15 pm
- Forum: Balancing Chemical Reactions
- Topic: Combustion
- Replies: 17
- Views: 947
Re: Combustion
Combustion consists of burning, usually O^2 reacts with something else and CO^2 and H^2O are products.
- Thu Oct 10, 2019 3:13 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing Chemical Reactions
- Replies: 20
- Views: 1069
Re: Balancing Chemical Reactions
I find it helpful to list the elements on both sides (under reactants and products) and then plug in numbers that look correct and update the numbers as I go by crossing them out and putting the new ones.
- Thu Oct 10, 2019 3:09 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg equation [ENDORSED]
- Replies: 73
- Views: 8674
Re: Rydberg equation [ENDORSED]
You would use the Rydberg equation to calculate the wavelength of light when an electron moves energy levels.
- Thu Oct 10, 2019 3:04 pm
- Forum: Limiting Reactant Calculations
- Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
- Replies: 68
- Views: 6594
Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
Yes, however I think it is best to show work so that in case you make a mistake you may receive partial credit.