Search found 120 matches
- Fri Mar 13, 2020 2:49 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Slowest step
- Replies: 38
- Views: 1325
Re: Slowest step
The overall rate is determined by the slowest step because the reaction is not completed until this step is finished, which is why it is considered rate determining
- Fri Mar 13, 2020 2:46 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Electrodes
- Replies: 4
- Views: 365
Re: Electrodes
If there are no solids in your half reactions, you will have to add Pt(s) to it.
- Thu Mar 12, 2020 2:09 pm
- Forum: First Order Reactions
- Topic: rate constants
- Replies: 30
- Views: 1285
Re: rate constants
Rate constants should always be positive
- Thu Mar 12, 2020 2:09 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Format because I posted in 14A by accident
- Replies: 8
- Views: 553
Re: Format because I posted in 14A by accident
Unfortunately he hasn't updated us on the final format ):
- Thu Mar 12, 2020 2:08 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Relationship Between Ecell and K
- Replies: 9
- Views: 3097
Re: Relationship Between Ecell and K
Ecell and K are positively related
- Thu Mar 12, 2020 2:05 pm
- Forum: General Rate Laws
- Topic: Factors Affecting k
- Replies: 83
- Views: 4448
Re: Factors Affecting k
rate constant can change due to temperature changes
- Thu Mar 12, 2020 2:03 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: determining k
- Replies: 13
- Views: 527
Re: determining k
Yes you can use any trial to find K
- Thu Mar 05, 2020 4:07 am
- Forum: Balancing Redox Reactions
- Topic: Simplifying
- Replies: 7
- Views: 569
Re: Simplifying
Simplifying can be done at the very end for the overall equation
- Thu Mar 05, 2020 4:06 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Nernst
- Replies: 10
- Views: 693
Re: Nernst
I don't think I saw the shortcut equation with .05916 on the equations sheet so I used Ln
- Thu Mar 05, 2020 4:01 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: writing cell diagramsl
- Replies: 4
- Views: 281
Re: writing cell diagramsl
Yes, you would leave H2O out of the diagram
- Thu Mar 05, 2020 3:59 am
- Forum: Van't Hoff Equation
- Topic: Van't Hoff equation
- Replies: 11
- Views: 1223
Re: Van't Hoff equation
I think it is important that you know how to derive this equation
- Thu Mar 05, 2020 3:57 am
- Forum: Balancing Redox Reactions
- Topic: Half rxns
- Replies: 27
- Views: 1325
Re: Half rxns
When balancing acidic solutions, you would add H2O to balance the O's and then add H+ to balance the H's out. For balancing basic solutions, you would add H2O to balance the O's and then add H2O to the other side and OH- on the opposite side. From here, you would balance electrons for both types of ...
- Sun Mar 01, 2020 9:35 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: when to use K or Q
- Replies: 18
- Views: 1041
Re: when to use K or Q
You should use Q when the reaction is not at equilibrium.
- Sun Mar 01, 2020 9:34 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: spontaneity
- Replies: 39
- Views: 1771
Re: spontaneity
Gibbs free energy can help determine spontaneity.
- Sun Mar 01, 2020 9:32 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Kelvin or Celsius?
- Replies: 86
- Views: 5008
Re: Kelvin or Celsius?
Definitely use Kelvin
- Sun Mar 01, 2020 9:32 pm
- Forum: Balancing Redox Reactions
- Topic: homework topic 6K
- Replies: 4
- Views: 329
Re: homework topic 6K
It is like that to make sure the equation is balanced on both sides
- Sun Mar 01, 2020 9:31 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Galvanic Cells
- Replies: 10
- Views: 531
Re: Galvanic Cells
When Ecell equals zero, the reaction is at equilibrium.
- Sun Feb 23, 2020 3:26 pm
- Forum: General Science Questions
- Topic: What are Workshops?
- Replies: 10
- Views: 816
Re: What are Workshops?
Workshops are review sessions tailored for those who understand material and would like more practice. Step up sessions are made for students who need help doing problems since the UA's go slowly and step by step.
- Sun Feb 23, 2020 3:20 pm
- Forum: Balancing Redox Reactions
- Topic: Oxidizing/Reducing Agents
- Replies: 11
- Views: 768
Re: Oxidizing/Reducing Agents
Oxidizing agents get reduced while reducing agents get oxidized.
- Sun Feb 23, 2020 3:18 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Salt Bridge
- Replies: 9
- Views: 611
Salt Bridge
Can someone explain to me what the purpose of the salt bridge is?
- Sun Feb 23, 2020 3:07 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Anode and Cathode
- Replies: 4
- Views: 287
Re: Anode and Cathode
I believe the standard notation for a cell diagram has an anode on the left and a cathode on the right .
- Sun Feb 23, 2020 3:05 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: What does it mean if E is negative
- Replies: 3
- Views: 622
Re: What does it mean if E is negative
IF E is negative, it indicates that the forward reaction is not spontaneous, while the reverse reaction is spontaneous
- Sun Feb 16, 2020 2:13 am
- Forum: Ideal Gases
- Topic: pv=nrt
- Replies: 19
- Views: 1073
Re: pv=nrt
Yes you can use it at STP
- Sun Feb 16, 2020 2:12 am
- 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: 10
- Views: 547
Re: Boltzmann Equation
The Boltzmann Equation is used to find residual entropy
- Sun Feb 16, 2020 2:11 am
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: adiabatic
- Replies: 19
- Views: 966
Re: adiabatic
An adiabatic reaction is one where there is no heat transfer
- Sun Feb 16, 2020 2:09 am
- Forum: General Science Questions
- Topic: 50 post grade
- Replies: 25
- Views: 1705
Re: 50 post grade
I think it depends on the TA but as long as you do five posts a week it should be okay
- Sun Feb 16, 2020 2:08 am
- Forum: Administrative Questions and Class Announcements
- Topic: grading curve
- Replies: 10
- Views: 622
Re: grading curve
He doesn't curve tests but at the end of the quarter, he adjusts the overall class grades
- Sun Feb 09, 2020 6:38 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Textbook question 4B.9
- Replies: 4
- Views: 156
Re: Textbook question 4B.9
In adiabatic processes, there is no heat transfer, so q is = to 0.
- Sun Feb 09, 2020 6:34 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hess's Law
- Replies: 10
- Views: 224
Re: Hess's Law
Enthalpy is a state function which means their enthalpy values could be added/subtracted together
- Sun Feb 09, 2020 6:33 pm
- Forum: Phase Changes & Related Calculations
- Topic: relationship between heat capacity and heating curve
- Replies: 6
- Views: 229
Re: relationship between heat capacity and heating curve
On the heating curve, the x axis has q and the y axis has temperature. If the graph has a steep slope, this means there is a small increase in q and a bigger increase in temperature, which means the substance has a low heat capacity.
- Fri Feb 07, 2020 1:32 pm
- Forum: Calculating Work of Expansion
- Topic: Difference in Wirr and Wrev
- Replies: 4
- Views: 212
Re: Difference in Wirr and Wrev
Irreversible processes are done under pressure that remains constant whereas reversible processes aren't. Gases have to do more work when pressure is not constant, which is why reversible processes do more work.
- Fri Feb 07, 2020 1:22 pm
- Forum: Calculating Work of Expansion
- Topic: Isothermal
- Replies: 17
- Views: 674
Re: Isothermal
If the expansion of the gas is isothermal, then this means the temperature remains constant and delta U = 0
- Fri Feb 07, 2020 1:20 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: ∆U and ∆H
- Replies: 6
- Views: 245
Re: ∆U and ∆H
Delta H indicates the change in enthalpy while Delta U indicates change in internal energy of the system. Delta U = Delta H + work
- Sun Feb 02, 2020 3:08 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Definition of First Law
- Replies: 9
- Views: 288
Re: Definition of First Law
The first law of thermodynamics discusses conservation of energy. Energy can't be created nor destroyed.
- Sun Feb 02, 2020 3:06 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Affect of temperature on entropy?
- Replies: 5
- Views: 217
Re: Affect of temperature on entropy?
Increasing the temperature would lead to an increase in entropy of the system
- Sun Feb 02, 2020 3:01 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: hess's law
- Replies: 13
- Views: 286
Re: hess's law
Molecules can only be cancelled if they are on opposite sides of the equation
- Sun Feb 02, 2020 3:00 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Phase change
- Replies: 20
- Views: 734
Re: Phase change
In this case, delta H is positive
- Sun Feb 02, 2020 2:59 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Standard Enthalpy of Formation
- Replies: 4
- Views: 219
Re: Standard Enthalpy of Formation
They will most likely be provided for the midterm
- Thu Jan 23, 2020 10:23 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ice table
- Replies: 13
- Views: 520
Re: ice table
No solids and liquids are not included in the ICE table because they don't experience changes in concentration
- Thu Jan 23, 2020 10:22 am
- Forum: Administrative Questions and Class Announcements
- Topic: Best Way To Study?
- Replies: 13
- Views: 560
Re: Best Way To Study?
Going to UA sessions help out a lot! Doing the assigned book problems ahead of time can help with the tests too.
- Thu Jan 23, 2020 10:20 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: suggestions
- Replies: 16
- Views: 498
Re: suggestions
Khan Academy definitely helps me the most!
- Thu Jan 23, 2020 10:19 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Acids and Bases pka and pkb
- Replies: 8
- Views: 279
Re: Acids and Bases pka and pkb
The lower the pKa, the stronger the acid. The lower the pKb, the stronger the base!
- Thu Jan 23, 2020 10:18 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: X was ignored
- Replies: 27
- Views: 948
Re: X was ignored
The X can be ignored because it is so small and wouldn't cause a change in concentration
- Thu Jan 23, 2020 10:16 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Le chatelier and Temperature
- Replies: 9
- Views: 248
Re: Le chatelier and Temperature
If delta H is positive and heat is added, then the equilibrium will shift to the products side. If delta H is negative and heat is added, then equilibrium will shift to the reactants
- Mon Jan 20, 2020 4:32 pm
- Forum: Student Social/Study Group
- Topic: Test 1
- Replies: 9
- Views: 528
Re: Test 1
He normally does not post a practice test before.
- Wed Jan 15, 2020 2:49 pm
- Forum: Ideal Gases
- Topic: Ideal Gas Law
- Replies: 5
- Views: 204
Ideal Gas Law
When are we supposed to use the Ideal Gas Law
- Tue Jan 14, 2020 9:33 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Units for K
- Replies: 21
- Views: 559
Re: Units for K
K, a constant, demonstrates the ratio of products and reactants so it does not have units
- Tue Jan 14, 2020 9:32 am
- Forum: Administrative Questions and Class Announcements
- Topic: Grading
- Replies: 8
- Views: 555
Re: Grading
The TAs check to make sure we make at least 5 posts each week. They only check to see that you've done 5, so any extra questions don't count as extra credit.
- Tue Jan 14, 2020 9:30 am
- Forum: Administrative Questions and Class Announcements
- Topic: Are Lectures Bruincasted?
- Replies: 10
- Views: 324
Re: Are Lectures Bruincasted?
His lectures are not bruincasted unfortunately. You could always ask someone to send you a picture of the slides!
- Tue Jan 14, 2020 9:28 am
- Forum: Administrative Questions and Class Announcements
- Topic: Discussion
- Replies: 8
- Views: 250
Re: Discussion
I don't think it is but the homework turned in during discussion is graded.
- Tue Jan 14, 2020 9:20 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kw and H3O/OH concentrations
- Replies: 5
- Views: 1060
Re: Kw and H3O/OH concentrations
When the pH of a solution is 7, that's when the concentrations of H3O and H+ are equal to one another.
- Tue Jan 14, 2020 9:17 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: equilibrium constants and inputs
- Replies: 4
- Views: 143
Re: equilibrium constants and inputs
Solids don't have a concentration and liquids are considered pure substances and their concentration does not change
- Sat Jan 11, 2020 5:29 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE box
- Replies: 9
- Views: 272
Re: ICE box
Concentration could never have a negative value so negative answers should be omitted
- Sat Jan 11, 2020 5:21 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Peer Learning
- Replies: 4
- Views: 209
Re: Peer Learning
Peer learning sessions are extremely useful sessions that are led by undergraduate assistants. They usually go over practice problems or have their own worksheets for you to do to help you better understand the material.
- Sat Jan 11, 2020 5:11 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Exothermic and endothermic reactions
- Replies: 4
- Views: 113
Re: Exothermic and endothermic reactions
If the reaction is exothermic and heat is added, then the reverse reaction would be favorable, causing more reactants to form. Heat can be seen as a product here, so if heat is added, more reactants will form.
- Sat Jan 11, 2020 3:31 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Why does only Temp affect K?
- Replies: 10
- Views: 16395
Re: Why does only Temp affect K?
If the temperature changes, the reaction shifts to one side in equilibrium, changing K
- Sat Jan 11, 2020 3:25 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: K vs. Q
- Replies: 10
- Views: 497
Re: K vs. Q
K is found when the reaction is at equilibrium, whereas Q can be found at any time during the reaction. Q helps us identify which way the reaction is proceeding
- Sun Dec 08, 2019 9:27 am
- Forum: Biological Examples
- Topic: EDTA
- Replies: 3
- Views: 345
Re: EDTA
It is a hexadentate and has a charge of -4
- Sun Dec 08, 2019 9:17 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Memorizing Ligands
- Replies: 3
- Views: 221
Re: Memorizing Ligands
It is also important to know dien, which is a tridentate (:
- Sat Dec 07, 2019 4:51 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Relative Acidity
- Replies: 2
- Views: 196
Relative Acidity
Can someone explain to me how resulting anion stability correlates to acid strength
- Sat Dec 07, 2019 4:48 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: KA
- Replies: 3
- Views: 276
KA
how do you find KA values
- Sat Dec 07, 2019 4:48 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: pKA values
- Replies: 4
- Views: 359
pKA values
what is pKA and why is it important
- Sun Dec 01, 2019 5:25 pm
- Forum: Conjugate Acids & Bases
- Topic: NH3, acid or base?
- Replies: 12
- Views: 8031
Re: NH3, acid or base?
NH3, or ammonia, is typically a weak base.
- Sun Dec 01, 2019 5:21 pm
- Forum: Lewis Acids & Bases
- Topic: acid v. base?
- Replies: 16
- Views: 851
Re: acid v. base?
lewis bases typically donate electron pairs while lewis acids accept electron pairs
- Sun Dec 01, 2019 5:17 pm
- Forum: Amphoteric Compounds
- Topic: Identifying Them?
- Replies: 12
- Views: 830
Re: Identifying Them?
A compound can be identified as a amphoteric compound if they accept and donate hydrogen ions.
- Sun Dec 01, 2019 5:16 pm
- Forum: Bronsted Acids & Bases
- Topic: Bronsted Base and Acid
- Replies: 5
- Views: 383
Re: Bronsted Base and Acid
Yes, a bronsted base accepts protons while bronsted acids donates protons.
- Sun Dec 01, 2019 5:12 pm
- Forum: Lewis Acids & Bases
- Topic: bronsted vs lewis
- Replies: 9
- Views: 522
Re: bronsted vs lewis
Bronsted acids and bases deal with protons whereas Lewis acids and bases deal with electrons. For example, a bronsted base accepts protons while a lewis base donates electrons
- Sun Dec 01, 2019 5:08 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Characteristics of a polydentate ligand
- Replies: 3
- Views: 128
Re: Characteristics of a polydentate ligand
All polydentates have 2+ lewis base sites so it donates 2 or more electron pairs to the central atom
- Sun Dec 01, 2019 5:00 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: polydentate
- Replies: 3
- Views: 170
Re: polydentate
Polydentates are ligands that bind to the transition metal at several sites. It refers to the ligand's amount of binding sites
- Sat Nov 30, 2019 1:27 am
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam Content
- Replies: 14
- Views: 717
Re: Final Exam Content
I believe the final is cumulative, so it will have everything we learned this quarter.
- Sun Nov 24, 2019 12:42 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Seesaw
- Replies: 23
- Views: 894
Re: Seesaw
Yes it should be less than 9- or 120 because the lone pairs should create a repulsion.
- Sat Nov 23, 2019 9:10 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: edta
- Replies: 8
- Views: 1893
Re: edta
It is able to form 6 bonds
- Sat Nov 23, 2019 9:09 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Oxidation State
- Replies: 4
- Views: 280
Oxidation State
How do you find the oxidation state of an element?
- Sat Nov 23, 2019 9:07 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Polydenate vs Chelate
- Replies: 1
- Views: 172
Polydenate vs Chelate
Can someone tell me the definition of these two? I am still bit confused.
- Sat Nov 23, 2019 9:02 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination Compound
- Replies: 3
- Views: 164
Coordination Compound
Can someone tell me what exactly are coordination compounds?
- Sat Nov 23, 2019 9:00 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: What are Ligands?
- Replies: 6
- Views: 172
Re: What are Ligands?
A ligand is a molecule or atom that bind to a central metal atom. They can also be described as electrons donors.
- Fri Nov 15, 2019 2:38 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: vsepr formula
- Replies: 3
- Views: 141
Re: vsepr formula
A represents the central atom, X represents the bonded atom, and E represents the lone pairs
- Thu Nov 14, 2019 10:36 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Electron distortion
- Replies: 4
- Views: 237
Re: Electron distortion
Electron distortion refers to how easily it is for an electron cloud to be pulled or attracted to another atom or molecule. The larger a molecule is, the less it is attracted towards its own nucleus, so its electron cloud is more easily distorted than that of small molecules. Big molecules are more ...
- Thu Nov 14, 2019 10:29 am
- Forum: Sigma & Pi Bonds
- Topic: Drawing
- Replies: 6
- Views: 303
Re: Drawing
Although we do not need to know how to draw the true shape of molecular structures, we have to know the name and be able to identify the shape.
- Thu Nov 14, 2019 10:24 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 2
- Views: 80
Bond Angles
For the test, do we have to know how to determine the degree of bond angles in the structure?
- Thu Nov 14, 2019 10:17 am
- Forum: Ionic & Covalent Bonds
- Topic: Electronegativity
- Replies: 7
- Views: 426
Re: Electronegativity
I don't think we will be receiving a chart but learning and using the periodic table trends of electronegativity will definitely help you out!
- Thu Nov 14, 2019 10:13 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Intermolecular forces
- Replies: 10
- Views: 638
Re: Intermolecular forces
Both London forces and Van Der Waals interactions are the same thing and can replace each other in a a sentence. These are the weakest intermolecular forces compared to the others.
- Thu Nov 14, 2019 10:00 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Test Topics
- Replies: 11
- Views: 698
Test Topics
What material is going to be on the test next week? Will we have to draw VSEPR models on the test?
- Tue Nov 12, 2019 1:19 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Week 7 Homework
- Replies: 2
- Views: 242
Week 7 Homework
For homework this week, what sections are we allowed to do??
- Sun Nov 10, 2019 12:23 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarisability vs Polarizing Power
- Replies: 15
- Views: 1043
Re: Polarisability vs Polarizing Power
smaller cations have high polarizing power while big anions have high polarizability. Polarizability measures how easily an electron cloud can be distorted while polarizing power measures the ability of an ion to polarize another ion
- Sun Nov 10, 2019 12:20 am
- Forum: Ionic & Covalent Bonds
- Topic: Polarizability
- Replies: 4
- Views: 156
Re: Polarizability
large ions are highly polarizable because as electron distance from the nucleus increases, the valence electrons feel a reduced attraction to the nucleus and are easily attracted to nuclei of other molecules.
- Sun Nov 10, 2019 12:18 am
- Forum: Ionic & Covalent Bonds
- Topic: C, N, O, and F
- Replies: 13
- Views: 576
Re: C, N, O, and F
Because they are located in period two, where there is no d block for the electrons to backfill.
- Sun Nov 10, 2019 12:14 am
- Forum: Electronegativity
- Topic: Ionization Energy
- Replies: 3
- Views: 147
Re: Ionization Energy
Nitrogen has a higher ionization energy because it is more stable than oxygen. it has three electrons in its p orbital, which means each orbital has one electron. However, oxygen has four, creating an electron electron repulsion that makes it easier to remove their electron from O than N
- Sun Nov 10, 2019 12:05 am
- Forum: Resonance Structures
- Topic: Resonance Structures
- Replies: 18
- Views: 1012
Re: Resonance Structures
Resonance structures are Lewis Structures for a compound that can alternate in regards to where their electrons are. Their structure stays the same but electrons are moved around.
- Thu Nov 07, 2019 10:45 am
- Forum: Bond Lengths & Energies
- Topic: Test 2 Topics
- Replies: 40
- Views: 1989
Re: Test 2 Topics
It will be material from after the midterm!
- Thu Nov 07, 2019 10:43 am
- Forum: Electronegativity
- Topic: Trend of Electronegativity
- Replies: 22
- Views: 1942
Re: Trend of Electronegativity
Electronegativity increases as you move up and to the right of the periodic table, which makes Fluorine the most electronegative
- Thu Nov 07, 2019 10:07 am
- Forum: Student Social/Study Group
- Topic: Class Grading
- Replies: 44
- Views: 3423
Re: Class Grading
you're right!
- Thu Nov 07, 2019 10:06 am
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Heisenberg
- Replies: 3
- Views: 228
Re: Heisenberg
Delta X is the uncertainty in the position, while Delta P represents the uncertainty in momentum.
- Sun Nov 03, 2019 9:09 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Rules for n, l,m
- Replies: 11
- Views: 502
Re: Rules for n, l,m
n = a #
l = (n-1)
ml = -l ... +l
ms = -1/2 or + 1/2
l = (n-1)
ml = -l ... +l
ms = -1/2 or + 1/2
- Sun Nov 03, 2019 9:07 pm
- Forum: Properties of Light
- Topic: What are the units of hertz
- Replies: 41
- Views: 1852
Re: What are the units of hertz
Hz is the measurement of frequency and it is 1 cycle per second
- Sun Nov 03, 2019 9:06 pm
- Forum: Electronegativity
- Topic: Trends of the Periodic Table
- Replies: 3
- Views: 188
Trends of the Periodic Table
Can someone describe the trends of the periodic table that we need to know again?
- Sun Nov 03, 2019 8:56 pm
- Forum: Octet Exceptions
- Topic: Octet Rule exceptions
- Replies: 14
- Views: 778
Octet Rule exceptions
How do know which elements don't have to follow the octet rule?
- Sun Nov 03, 2019 8:52 pm
- Forum: *Black Body Radiation
- Topic: Midterm
- Replies: 14
- Views: 600
Re: Midterm
I don't think it is on the midterm.
- Sun Nov 03, 2019 8:51 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Aufbau vs Hunds
- Replies: 6
- Views: 468
Aufbau vs Hunds
What is the difference between Aufbau's Principle and Hunds rule?
- Sun Oct 27, 2019 12:51 am
- Forum: SI Units, Unit Conversions
- Topic: Midterm
- Replies: 6
- Views: 312
Midterm
Will the midterm be covering topics for high school? For example, would we get any limiting reactant questions or molarity questions?