Search found 114 matches
- Fri Mar 12, 2021 8:53 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Intermediates
- Replies: 6
- Views: 313
Re: Intermediates
To expand, are they included in the rate laws for split-up reactions, but not included in the overall rate law for the whole reaction?
- Fri Mar 12, 2021 8:51 am
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Intermediates
- Replies: 6
- Views: 313
Intermediates
We don't include intermediates in rate laws, correct?
- Fri Mar 12, 2021 7:46 am
- Forum: First Order Reactions
- Topic: Determining the time needed for a concentration to fall
- Replies: 3
- Views: 241
Re: Determining the time needed for a concentration to fall
Thank you so much!!
- Fri Mar 12, 2021 6:22 am
- Forum: First Order Reactions
- Topic: Determining the time needed for a concentration to fall
- Replies: 3
- Views: 241
Determining the time needed for a concentration to fall
What values do we plug into the integrated rate laws for initial concentration and final concentration if we aren't given a concertation to start with? For example, if we were asked to calculate the time it took for something to fall to 10% of its initial concentration, how would we use this in the ...
- Wed Mar 10, 2021 8:02 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Reduction Potential
- Replies: 2
- Views: 136
Cell Reduction Potential
Can the overall cell reduction potential be negative? Would this mean the reaction is not spontaneous?
- Tue Mar 09, 2021 7:59 am
- Forum: General Rate Laws
- Topic: Speed and Mechanism of Rate Laws
- Replies: 1
- Views: 141
Speed and Mechanism of Rate Laws
What does a mechanism detailing speed (fast, slow, fast/ slow in either direction, etc.) tell us about a reaction and its rate law?
- Sat Mar 06, 2021 6:39 am
- Forum: General Rate Laws
- Topic: Instantaneous versus Average rate [ENDORSED]
- Replies: 3
- Views: 208
Instantaneous versus Average rate [ENDORSED]
When finding the instantaneous rate of reaction, we take the derivative, correct?
- Fri Mar 05, 2021 6:10 am
- Forum: General Rate Laws
- Topic: Concentration Denotation
- Replies: 7
- Views: 387
Concentration Denotation
Is concentration always denotated by brackets?
- Wed Mar 03, 2021 6:30 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: 6M- Standard Molar Potential
- Replies: 2
- Views: 138
6M- Standard Molar Potential
In the textbook, the notation Eo (Zn^2+/Zn)= (a number of) V comes up a lot (Zinc was just an example). What does this mean? Does it just represent the potential of this half reaction?
- Mon Mar 01, 2021 9:21 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: E naught value in the change in standard Gibbs free energy equation
- Replies: 2
- Views: 187
E naught value in the change in standard Gibbs free energy equation
Do we use the E naught value for the cell, anode, or cathode for this equation:
G = - n F E ?
G = - n F E ?
- Sat Feb 27, 2021 4:39 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Volts in Concentration Cells
- Replies: 2
- Views: 188
Volts in Concentration Cells
Will a concentration cell's E naught value always be zero?
- Sat Feb 27, 2021 4:34 am
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Cathodes and Anodes
- Replies: 4
- Views: 259
Cathodes and Anodes
In given diagrams, will the positively charged cathode/ anode always be on the left side?
- Sat Feb 27, 2021 4:32 am
- Forum: Balancing Redox Reactions
- Topic: Determining which molecule is the oxidizing agent
- Replies: 49
- Views: 1721
Determining which molecule is the oxidizing agent
Is the oxidizing agent the molecule that has been reduced?
- Sat Feb 27, 2021 4:31 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Spontaneity
- Replies: 2
- Views: 251
Spontaneity
Would positive values for E naught cell mean the electrochemical reaction is spontaneous?
- Sat Feb 27, 2021 4:28 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: E naught Cell equation
- Replies: 9
- Views: 424
E naught Cell equation
If given standard E naught values, is the equation always cathode minus anode?
- Sat Feb 27, 2021 4:26 am
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: -d[R]/dT versus d[P]/dt
- Replies: 13
- Views: 828
-d[R]/dT versus d[P]/dt
Do -d[R]/dT and d[P]/dt mean the same thing/ result in the same final outcome?
- Fri Feb 19, 2021 7:52 am
- Forum: Environment, Fossil Fuels, Alternative Fuels
- Topic: Heat of Combustion
- Replies: 1
- Views: 591
Heat of Combustion
Would a potential exam question regarding fuels ask us for the heat of combustion?
- Thu Feb 18, 2021 8:14 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Using lnK versus lnQ
- Replies: 1
- Views: 497
Using lnK versus lnQ
Would we have to be told that delta G naught is zero in the problem to know that the reaction is at equilibrium? Otherwise, we we just assume we have to us delta G= delta G naught + RT lnQ ?
- Wed Feb 17, 2021 1:40 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: State functions and Path functions
- Replies: 2
- Views: 607
Re: State functions and Path functions
I saw this acronym on the internet for memorizing state functions: PVT HUGS. P is for pressure, V is for volume, T is for temperature, H is for enthalpy, U is for internal energy, G is for Gibbs free energy, and S is for entropy. The two path functions are work and heat. Thank you so much this is s...
- Wed Feb 17, 2021 11:26 am
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: 4F.9
- Replies: 3
- Views: 257
Re: 4F.9
Would anyone happen to know why the answer to this same question is 42.4 J/K? I keep getting 13.7; do I need to convert this into different units?
- Wed Feb 17, 2021 7:11 am
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: State functions and Path functions
- Replies: 2
- Views: 607
State functions and Path functions
Which two thermodynamic functions are path functions, not state functions?
- Wed Feb 17, 2021 7:08 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: Example 4G.2
- Replies: 1
- Views: 94
Example 4G.2
How is the value of N=6.02×10^23 obtained? Is this a constant?
- Tue Feb 16, 2021 6:04 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Finding bond enthalpies
- Replies: 6
- Views: 379
Finding bond enthalpies
Do we add or subtract reactants from products when obtaining bond enthalpies?
- Mon Feb 15, 2021 3:28 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: confusion on using Cp and Cv
- Replies: 24
- Views: 965
confusion on using Cp and Cv
Do we use Cp when we are told the pressure is constant or when we are told the volume is constant? I know it means "constant pressure", but if anyone has an example of a question that directly points to us using Cp versus Cv could you please respond with it?
- Fri Feb 12, 2021 7:14 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: m versus n
- Replies: 11
- Views: 546
m versus n
Does the m constant mean mass and the n constant mean moles in heat capacity equations?
- Fri Feb 12, 2021 7:12 am
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Isobaric [ENDORSED]
- Replies: 1
- Views: 88
Isobaric [ENDORSED]
If a reaction doesn't mention a change in pressure (or pressure at all) should we assume it is isobaric?
- Fri Feb 12, 2021 7:09 am
- Forum: Calculating Work of Expansion
- Topic: R constant
- Replies: 4
- Views: 175
R constant
In some example problems online I noticed the R constant was 8.3145 J K−1 mol−1; if we don't use the 5 will it noticeably change our answer?
- Fri Feb 12, 2021 7:05 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Spontaneous as Written
- Replies: 10
- Views: 486
Spontaneous as Written
A reaction is spontaneous as written if delta G is negative, correct?
- Fri Feb 12, 2021 7:03 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Temperature for Gibbs Free Energy Calculations
- Replies: 6
- Views: 357
Temperature for Gibbs Free Energy Calculations
Is temperature always in kelvin for these reactions too?
- Fri Feb 12, 2021 6:41 am
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Using 5/2 and 3/2
- Replies: 6
- Views: 290
Using 5/2 and 3/2
In a given problem, what specifically points to using 3/2 versus 5/2 in our equations?
- Sun Feb 07, 2021 7:26 am
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Spontaneous Process
- Replies: 4
- Views: 161
Spontaneous Process
Will there always be an increase in entropy with a spontaneous process?
- Sun Feb 07, 2021 7:25 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: Perfectly Ordered Material
- Replies: 1
- Views: 43
Perfectly Ordered Material
Does the third law of thermodynamics only apply to perfectly ordered material?
- Sun Feb 07, 2021 7:22 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Bomb calorimeter vs. Calorimeter
- Replies: 2
- Views: 121
Bomb calorimeter vs. Calorimeter
What is the difference between a bomb calorimeter and a regular calorimeter?
- Sun Feb 07, 2021 7:18 am
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: converting T to kelvin
- Replies: 46
- Views: 3189
Re: converting T to kelvin
Should we use 273 or the more accurate value of 273.15 when converting from one measurement to the other?
- Sun Feb 07, 2021 7:15 am
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Calculating volume when given moles
- Replies: 2
- Views: 75
Calculating volume when given moles
Is there a way to find the volume of a substance when only given its molarity? The substance is at a constant pressure.
- Thu Feb 04, 2021 4:21 pm
- Forum: Calculating Work of Expansion
- Topic: Work notation
- Replies: 10
- Views: 382
Work notation
Is work denoted by W or w?
- Sun Jan 31, 2021 7:04 am
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Entropy vs Enthalpy
- Replies: 11
- Views: 487
Entropy vs Enthalpy
What is the difference between entropy and enthalpy?
- Sun Jan 31, 2021 7:02 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Temperature for Gibbs Free Energy Calculations [ENDORSED]
- Replies: 2
- Views: 155
Re: Temperature for Gibbs Free Energy Calculations [ENDORSED]
If yes, would we convert Celsius to Kelvin before we make the calculation (if given degrees Celsius in the problem)?
- Sun Jan 31, 2021 7:01 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Temperature for Gibbs Free Energy Calculations [ENDORSED]
- Replies: 2
- Views: 155
Temperature for Gibbs Free Energy Calculations [ENDORSED]
Do we always calculate Gibbs free energy with Kelvin?
- Sun Jan 31, 2021 6:59 am
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Enthalpy
- Replies: 26
- Views: 1038
Re: Enthalpy
The path a state function has/ takes does not matter with regard to its final value.
- Wed Jan 27, 2021 7:37 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Concentration, Volume, and Pressure
- Replies: 3
- Views: 79
Concentration, Volume, and Pressure
Does concentration change if the pressure is increased by decreasing the volume? I am slightly confused by the module on chemical equilibrium.
- Tue Jan 26, 2021 10:53 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Predicting how compression favors reactants vs products
- Replies: 1
- Views: 102
Predicting how compression favors reactants vs products
If we are given a reaction, how do we determine whether the reactants or products will be favored in response to compression?
- Sun Jan 24, 2021 6:47 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: BH+ and OH-
- Replies: 3
- Views: 208
BH+ and OH-
Will the BH+ and OH- values always be equivalent when solving for Kb?
- Sun Jan 24, 2021 6:43 am
- Forum: Phase Changes & Related Calculations
- Topic: Steam causing severe burns
- Replies: 19
- Views: 753
Re: Steam causing severe burns
I feel as though this would come from the release of heat as soon as the steam reaches the air, since it travels a distance before it hits your face.
- Sun Jan 24, 2021 6:39 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Direction of arrows
- Replies: 11
- Views: 452
Direction of arrows
In Friday's lecture, I noticed some of the reactions only proceeded in one direction. If the arrow does not point in both directions, does it mean the reaction only proceeds in that one way?
- Sun Jan 24, 2021 6:37 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Standard State
- Replies: 11
- Views: 383
Re: Standard State
Standard state would be 25ºC and 1 atm, as mentioned before.
- Sun Jan 24, 2021 6:34 am
- Forum: Phase Changes & Related Calculations
- Topic: Vapor vs gas
- Replies: 121
- Views: 8303
Re: Vapor vs gas
We would treat these as the same state, correct?
- Sat Jan 16, 2021 8:04 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Percent ionization
- Replies: 6
- Views: 172
Re: Percent ionization
Just to clarify, if the percent ionization is less than 5% of the initial concentration, it is okay to approximate x, correct?
- Sat Jan 16, 2021 8:01 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Getting two positive x values when using quadratic
- Replies: 43
- Views: 4474
Re: Getting two positive x values when using quadratic
Is it possible that if we used the quadratic formula and got two positive values that both these values would be less than the initial molar concentration?
- Sat Jan 16, 2021 7:59 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: When x is negligible in Equilibrium constant
- Replies: 34
- Views: 1326
Re: When x is negligible in Equilibrium constant
If K is greater than 10^-3 would we just use the quadratic formula and not assume x is negligible?
- Sat Jan 16, 2021 7:57 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Temperature
- Replies: 12
- Views: 509
Temperature
Can the temperature change mid-equation if the reaction is not yet at equilibrium? If so, would we have to find two separate Q values?
- Sat Jan 16, 2021 7:51 am
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Halogens and pH
- Replies: 3
- Views: 137
Halogens and pH
Why don't halogens affect the pH of a concentration?
- Sat Jan 09, 2021 6:25 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: terminology
- Replies: 11
- Views: 425
Re: terminology
If we were to say a reaction is moving the the right, would this mean the products are favored?
- Sat Jan 09, 2021 6:23 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: H2O as a Gas
- Replies: 69
- Views: 6053
Re: H2O as a Gas
We would have to be given the state of H20 in the reaction, correct?
- Sat Jan 09, 2021 6:18 pm
- Forum: Ideal Gases
- Topic: Bars to atm [ENDORSED]
- Replies: 41
- Views: 1625
Re: Bars to atm [ENDORSED]
When do we use atms versus bars (if we aren't given the original units)?
- Sat Jan 09, 2021 6:16 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Adding more to reactant to a reaction?
- Replies: 5
- Views: 174
Re: Adding more to reactant to a reaction?
This post title should say "Adding more reactant to a reaction,", my apologies.
- Sat Jan 09, 2021 6:15 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Adding more to reactant to a reaction?
- Replies: 5
- Views: 174
Re: Adding more to reactant to a reaction?
Similarly, will the addition of more product always result the formation of more reactant?
- Sat Jan 09, 2021 6:14 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Adding more to reactant to a reaction?
- Replies: 5
- Views: 174
Adding more to reactant to a reaction?
Will the addition of a reactant always result in the formation of more product?
- Fri Dec 11, 2020 2:08 pm
- Forum: Naming
- Topic: Adding 'ion' to the name
- Replies: 2
- Views: 168
Adding 'ion' to the name
When does 'ion' need to be added to the name of a coordination compound? Is it when the particle has an overall charge?
- Thu Dec 10, 2020 2:10 pm
- Forum: Lewis Acids & Bases
- Topic: Difference between a Lewis Base and Bronsted Base
- Replies: 3
- Views: 1111
Difference between a Lewis Base and Bronsted Base
What are some key differences between Bronsted bases and Lewis bases?
- Thu Dec 10, 2020 2:08 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Metals and ligands
- Replies: 1
- Views: 49
Metals and ligands
Are ligands the regions of electron density that come off of the central metal atom?
- Thu Dec 10, 2020 2:06 pm
- Forum: Balancing Chemical Reactions
- Topic: Diatomic Molecules
- Replies: 7
- Views: 726
Diatomic Molecules
Which molecules are diatomic?
- Wed Dec 09, 2020 9:42 pm
- Forum: Conjugate Acids & Bases
- Topic: Molecules ending in C O O N
- Replies: 1
- Views: 85
Re: [censored]
That should say C O O N, I don't know why it says censored (at least it says that on my computer).
- Wed Dec 09, 2020 9:41 pm
- Forum: Conjugate Acids & Bases
- Topic: Molecules ending in C O O N
- Replies: 1
- Views: 85
Molecules ending in C O O N
Will a molecule containing [censored] always be considered a conjugate base?
- Wed Dec 09, 2020 12:24 pm
- Forum: Photoelectric Effect
- Topic: Work Function Question
- Replies: 4
- Views: 136
Work Function Question
When solving for kinetic energy, will the work function be added or subtracted based on if absorption or emission is occurring or is it always E= hv - work?
- Sun Dec 06, 2020 8:45 am
- Forum: Bronsted Acids & Bases
- Topic: Methods to Stabilize Charge
- Replies: 1
- Views: 293
Methods to Stabilize Charge
Are there any other ways to stabilize charge in anions aside from determining different resonances and spreading the charge over the largest molecule?
- Sun Dec 06, 2020 8:43 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH Strengths
- Replies: 3
- Views: 213
pH Strengths
As pH changes by 1, the strength is increasing (or decreasing) 10x, correct?
- Sun Dec 06, 2020 8:35 am
- Forum: Identifying Acidic & Basic Salts
- Topic: Salt as a Base
- Replies: 4
- Views: 232
Salt as a Base
Will a compound with a salt always be a base?
- Sun Dec 06, 2020 8:21 am
- Forum: Bronsted Acids & Bases
- Topic: Difference between Bronsted Acid and Lewis acid?
- Replies: 4
- Views: 139
Difference between Bronsted Acid and Lewis acid?
What is the difference between a Lewis acid and a Bronsted acid? Could someone provide examples of each?
- Sun Dec 06, 2020 8:11 am
- Forum: Amphoteric Compounds
- Topic: Memorization?
- Replies: 10
- Views: 401
Re: Memorization?
Should we memorize the oxides themselves or just the other molecules without their oxygens?
- Sun Nov 29, 2020 8:43 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polarity
- Replies: 17
- Views: 647
Re: Polarity
Would this mean certain geometries are always polar/ nonpolar?
- Sun Nov 29, 2020 8:41 am
- Forum: Hybridization
- Topic: Confusion on certain carbon hybridizations
- Replies: 5
- Views: 347
Confusion on certain carbon hybridizations
For a molecule like H2CCH2, why would the hybridization of the carbon atoms in the structure be sp and sp2? Is this because a double bond only counts as one region, or do I disregard bonds and just count atoms/lone pairs?
- Sun Nov 29, 2020 8:32 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sapling week 8 #17
- Replies: 7
- Views: 336
Re: Sapling week 8 #17
Sapling says one of the three structures is cyclic, does that mean it makes a ring?
- Sun Nov 29, 2020 8:30 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: 120 degree bond angles
- Replies: 3
- Views: 151
120 degree bond angles
Which molecular geometries have 120 degree bond angles?
- Sat Nov 28, 2020 8:24 am
- Forum: Sigma & Pi Bonds
- Topic: Delocalized and Localized Bonds
- Replies: 7
- Views: 1065
Delocalized and Localized Bonds
What is the difference between a localized bond and a delocalized bond?
- Fri Nov 20, 2020 7:06 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angle
- Replies: 9
- Views: 430
Bond Angle
What was the angle measurement for the 'seesaw' molecular shape? Will this differ based on the exact atoms in the molecule?
- Fri Nov 20, 2020 7:03 pm
- Forum: Bond Lengths & Energies
- Topic: electron repulsion
- Replies: 15
- Views: 690
Re: electron repulsion
This repulsion is what changes the shape of the atom, correct?
- Fri Nov 20, 2020 6:54 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Shape Names
- Replies: 50
- Views: 2236
Re: Shape Names
Bent or angular can be used interchangeably for this!
- Fri Nov 20, 2020 10:43 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: bond angles
- Replies: 16
- Views: 1095
Re: bond angles
If there are lone pairs causing the bod angles to deviate from their average measurements, will the new angles always be less than their average counterparts?
- Fri Nov 20, 2020 10:41 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: LiCO3 missing parts
- Replies: 2
- Views: 116
LiCO3 missing parts
It was mentioned in lecture earlier this week that LiCO3 was incorrect in the slides and that there should be a 2 after Li. Does this 2 come from the charge on the carbon or the charge on the oxygen?
- Sun Nov 15, 2020 12:05 pm
- Forum: Lewis Structures
- Topic: Lewis Acid and Base Reactions (Sapling Week 5/6 #6)
- Replies: 4
- Views: 188
Re: Lewis Acid and Base Reactions (Sapling Week 5/6 #6)
This was extremely helpful for me as well! Thank you.
- Sat Nov 14, 2020 10:39 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: bent v. angular
- Replies: 27
- Views: 1348
Re: bent v. angular
Does any angular measurement aside from 180 mean the molecule has bent/ angular character?
- Sat Nov 14, 2020 10:37 am
- Forum: Sigma & Pi Bonds
- Topic: Triple bond?
- Replies: 21
- Views: 814
Re: Triple bond?
What is an example of a molecule that exhibits a delta bond?
- Sat Nov 14, 2020 10:33 am
- Forum: Dipole Moments
- Topic: What is a dipole moment?
- Replies: 4
- Views: 196
Re: What is a dipole moment?
Would that mean an induced dipole only can be seen in a nonpolar molecule since there is a difference in charges between the atoms?
- Sat Nov 14, 2020 10:28 am
- Forum: Octet Exceptions
- Topic: Octet Rule Exceptions
- Replies: 8
- Views: 515
Re: Octet Rule Exceptions
Does this mean there is no set list of elements that are considered exceptions to the octet rule? It's just any element higher than row 3?
- Sat Nov 14, 2020 9:59 am
- Forum: Ionic & Covalent Bonds
- Topic: Dipole- induced dipole bond vs. dipole-dipole bond
- Replies: 3
- Views: 223
Dipole- induced dipole bond vs. dipole-dipole bond
From my understanding, a dipole-dipole bond occurs between two polar molecules but a dipole- induced dipole molecule occurs between a nonpolar and a polar molecule. How does this nonpolar molecule become an "induced dipole" molecule and why is this not just a London dispersion force? Also,...
- Wed Nov 11, 2020 1:55 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Step-Up Sessions
- Replies: 3
- Views: 159
Step-Up Sessions
Are step-up sessions and workshops still being held today (11/11)?
- Sun Nov 08, 2020 1:18 pm
- Forum: Electronegativity
- Topic: Noble Gases
- Replies: 40
- Views: 12409
Re: Noble Gases
If asked to compare an element that is in the group to the left of the noble gas, would that element have a higher electronegativity then?
- Sun Nov 08, 2020 1:16 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: h-atom equation variances
- Replies: 2
- Views: 90
h-atom equation variances
Are the constants for many equations regarding the h-atom (like Rydberg's) different from their normal constants due to the mass/ structure of the h-atom?
- Sun Nov 08, 2020 1:10 pm
- Forum: Lewis Structures
- Topic: lewis structure
- Replies: 10
- Views: 353
Re: lewis structure
To tag onto the equation posted above-iIf the formal charge is zero, the electron is stable, correct?
- Sun Nov 08, 2020 1:09 pm
- Forum: Ionic & Covalent Bonds
- Topic: Octet rule exceptions
- Replies: 15
- Views: 498
Re: Octet rule exceptions
Do these named exceptions depend on which elements these specific exceptions bond with, or are these rules across the board?
- Sun Nov 08, 2020 1:07 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Posting Screenshots on Chem Community
- Replies: 3
- Views: 113
Posting Screenshots on Chem Community
Hello, could anyone type out the way to post screenshots in this chat forum? I still am unable to figure it out; I have a screenshot from a question in the Sapling textbook that I would like to post. I'm probably just glancing over the tab, so if someone could name it that would be great.
- Sat Nov 07, 2020 4:05 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Element orbital representation
- Replies: 4
- Views: 238
Re: Element orbital representation
Does is matter the order in which these orbitals are written as long as the n number are in order?
- Sun Nov 01, 2020 1:47 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: General Heisenberg Question
- Replies: 7
- Views: 308
Re: General Heisenberg Question
In regards to uncertainty in position, do we need to multiply the position by 2? On sapling, I did not need to change delta x but I did have to multiply delta x by 2 in some step-up sessions. How do we know when to do this?
- Sun Nov 01, 2020 1:41 pm
- Forum: Trends in The Periodic Table
- Topic: Electron Affinity vs Electronegativity
- Replies: 7
- Views: 229
Electron Affinity vs Electronegativity
Electronegativity references an atom's ability to attract electrons to itself, how is this different from electron affinity? Can these terms be used interchangeably/ are they the same thing?
- Sun Nov 01, 2020 1:38 pm
- Forum: Properties of Light
- Topic: Is c always the speed of light?
- Replies: 92
- Views: 4742
Re: Is c always the speed of light?
Is there a specific constant for the speed of light through air or should we always assume to use c even if it is not stated a vacuum is present in the equation?
- Sun Nov 01, 2020 1:36 pm
- Forum: Einstein Equation
- Topic: E=hv vs E=hf
- Replies: 15
- Views: 684
E=hv vs E=hf
Why is frequency denoted as v in the first equation? I understand that these are the same equation and was curious as to why some equations use v.
- Mon Oct 26, 2020 1:43 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: textbook 1B.5
- Replies: 2
- Views: 115
textbook 1B.5
Could someone explain why delta v is multiplied by 2 in part A of this example? The denominator as a whole is also multiplied by 2 because of the proportions so I'm confused as to why the uncertainty in the speed has to be multiplied additionally.
- Sat Oct 24, 2020 10:45 am
- Forum: *Shrodinger Equation
- Topic: Schrodinger's Equation
- Replies: 5
- Views: 208
Re: Schrodinger's Equation
So does Schrodinger's equation just provide us with the nodal graph or does it give us the energy of the wavefunction. Is the nodal graph just a visual (does it have any value numerically)?
- Sat Oct 24, 2020 10:40 am
- Forum: Einstein Equation
- Topic: Usage of E=hv
- Replies: 10
- Views: 461
Re: Usage of E=hv
Would the question have to explicitly state that we are solving for the energy of incoming photon in order to use c=lambda(v) ? Is there another key word that would point to using an equation for a particle with no mass?