Search found 102 matches
- Fri Mar 12, 2021 10:18 am
- Forum: Balancing Redox Reactions
- Topic: E at equilibrium
- Replies: 7
- Views: 643
Re: E at equilibrium
Delta E is zero when the reaction reaches equilibrium
- Fri Mar 12, 2021 10:18 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Strongest reducing metal
- Replies: 8
- Views: 488
Re: Strongest reducing metal
The strongest reducing metal is the one with the lowest reduction potential
- Fri Mar 12, 2021 10:16 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagrams: Platinum
- Replies: 3
- Views: 251
Re: Cell Diagrams: Platinum
I believe that you cab assume all solids to be a conductive source as well as liquid mercury. Platinum is used if one side of the galvanic cell is lacking a solid.
- Fri Mar 12, 2021 10:15 am
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: n in ∆G = -nFE
- Replies: 80
- Views: 4514
Re: n in ∆G = -nFE
The number of electrons that cancel out in the half-reactions when making the overall reaction is the value of n.
- Fri Mar 12, 2021 10:14 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagram and Ecell [ENDORSED]
- Replies: 29
- Views: 114104
Re: Cell Diagram and Ecell [ENDORSED]
Solids are always on the outside of the cell diagram and everything is reversed when E is less than 0.
- Sun Mar 07, 2021 6:58 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Delta H and Delta S both positive
- Replies: 31
- Views: 8674
Re: Delta H and Delta S both positive
With both H and S positive, the sign of G is dependent on the temperature. At high temps, the G is negative and at low temps, G is positive.
- Sun Mar 07, 2021 6:56 pm
- Forum: Calculating Work of Expansion
- Topic: Work and Delta V
- Replies: 20
- Views: 2598
Re: Work and Delta V
Yes, they are directly related. No change in volume means no work done.
- Sun Mar 07, 2021 6:55 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Finding bond enthalpies
- Replies: 6
- Views: 497
Re: Finding bond enthalpies
You add them up after finding the enthalpy for each bond.
- Sun Mar 07, 2021 6:55 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Finding bond enthalpies
- Replies: 6
- Views: 497
Re: Finding bond enthalpies
You add them up after finding the enthalpy for each bond.
- Sun Mar 07, 2021 6:54 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: C vs Cs/Cm
- Replies: 8
- Views: 1721
Re: C vs Cs/Cm
The molar heat capacity involves the number of moles, but the specific heat capacity refers to the mass (grams).
- Sun Mar 07, 2021 6:52 pm
- Forum: Phase Changes & Related Calculations
- Topic: Vapor vs gas
- Replies: 121
- Views: 12605
Re: Vapor vs gas
They are the same thing
- Sun Feb 28, 2021 11:47 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Log or ln
- Replies: 22
- Views: 1689
Re: Log or ln
They are applicable to different versions of the same equation.
- Sun Feb 28, 2021 11:46 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Balancing equations
- Replies: 5
- Views: 292
Re: Balancing equations
Whenvever an oxygen is needed on one side, I add OH in a basic solution and H+ in an acidic
- Sun Feb 28, 2021 11:44 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: pH
- Replies: 6
- Views: 432
Re: pH
It is used to calculate the concentration of H+
- Sun Feb 28, 2021 11:44 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Calculating equilibrium constant
- Replies: 11
- Views: 645
Re: Calculating equilibrium constant
Yes, you need to flip the anode reaction typically.
- Sun Feb 28, 2021 11:43 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Nernst Equations
- Replies: 7
- Views: 426
Re: Nernst Equations
E (cell potential) value is 0 at equilibrium not E naught
- Mon Feb 22, 2021 12:02 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Thermodynamically Favorable
- Replies: 27
- Views: 1954
Re: Thermodynamically Favorable
It refers to a negative Gibbs free energy value.
- Mon Feb 22, 2021 12:01 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Forward vs. Reverse
- Replies: 22
- Views: 2178
Re: Forward vs. Reverse
The reverse of a reaction is flipping the reactants and the products.
- Mon Feb 22, 2021 12:00 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Constant Volume
- Replies: 15
- Views: 923
Re: Constant Volume
Cv is used when the volume is constant and Cp is used when the pressure is constant. The value for Cp and Cv for monotonic molecules are 5/2R and 3/2R, respectively.
- Mon Feb 22, 2021 11:58 am
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Exergonic Rxns
- Replies: 14
- Views: 775
Re: Exergonic Rxns
The term exergonic refers to reactions that have a negative delta G, so yes.
- Mon Feb 22, 2021 11:57 am
- Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
- Topic: High and Low Pressure vs Entropy
- Replies: 3
- Views: 966
Re: High and Low Pressure vs Entropy
As volume decreases, pressure tends to increase due to their inversely related relationship.
- Sun Feb 14, 2021 11:18 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Cp vs Cv
- Replies: 2
- Views: 211
Re: Cp vs Cv
Whenever volume is constant in the question, Cv is what you use. When the pressure is constant, Cp is what you should use in the question.
- Sun Feb 14, 2021 11:16 pm
- Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
- Topic: R constants
- Replies: 40
- Views: 2272
Re: R constants
I always look at the units and go from there. When there are liters and atm, the 8.206 x 10^-2 is teh correct R.
- Sun Feb 14, 2021 11:14 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Kelvin conversion
- Replies: 40
- Views: 3423
Re: Kelvin conversion
I always just add 273 to Celcius and never have a problem, however, adding 273.15 is more accurate.
- Sun Feb 14, 2021 11:12 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: G° vs G
- Replies: 30
- Views: 2708
Re: G° vs G
When it is G°, the conditions are standard (1 atm and 298 K)
- Sun Feb 14, 2021 11:11 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Closed vs Isolated System
- Replies: 30
- Views: 1414
Re: Closed vs Isolated System
A closed system allows for heat to be transferred, whereas an isolated system does not allow for heat or matter to be added to it.
- Sat Feb 06, 2021 6:34 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Phase Change
- Replies: 6
- Views: 269
Re: Phase Change
I believe it can occur at both, dependent on the system.
- Sat Feb 06, 2021 6:33 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: closed system
- Replies: 43
- Views: 1644
Re: closed system
Being a closed system means that no matter can go in and out, therefore the volume does not change.
- Sat Feb 06, 2021 6:31 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Differences between the two heat (q) equations
- Replies: 11
- Views: 413
Re: Differences between the two heat (q) equations
It depends on the units that are given with the heat capacity.
- Sat Feb 06, 2021 6:30 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: deltaU
- Replies: 29
- Views: 940
Re: deltaU
Delta U is the change in internal energy
- Sat Feb 06, 2021 6:29 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: R Constant
- Replies: 91
- Views: 6804
Re: R Constant
You should always look at the units in the problem and choose the R constant from there
- Sun Jan 31, 2021 8:32 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: steam causing burns
- Replies: 40
- Views: 1413
Re: steam causing burns
It releases more energy for water to go from vapor to liquid form, causing more severe burns
- Sun Jan 31, 2021 8:31 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: delta H vs delta U
- Replies: 11
- Views: 548
Re: delta H vs delta U
Delta U is the total amount of energy, but delta H refers to the amount of work.
- Sun Jan 31, 2021 8:29 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Memorize bond enthalpies / standard enthalpies of formation?
- Replies: 39
- Views: 1418
Re: Memorize bond enthalpies / standard enthalpies of formation?
Pretty sure that you don't need to memorize anything.
- Sun Jan 31, 2021 8:29 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hess's Law
- Replies: 58
- Views: 3158
Re: Hess's Law
Since enthalpy is a state function, it is additive.
- Sun Jan 31, 2021 8:28 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Effect of Kelvin Instead of Celsius
- Replies: 12
- Views: 680
Re: Effect of Kelvin Instead of Celsius
You can just change between them by adding 273 to the Celius value.
- Sun Jan 24, 2021 9:06 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Qudratic Formula
- Replies: 19
- Views: 1034
Re: Qudratic Formula
I use a quadratic root finder online to check my work.
- Sun Jan 24, 2021 9:05 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Increasing pressure
- Replies: 23
- Views: 972
Re: Increasing pressure
It doesnt react with the reactants or products.
- Sun Jan 24, 2021 9:02 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Ka correlation to strength of an acid
- Replies: 30
- Views: 2323
Re: Ka correlation to strength of an acid
The larger the Ka, the stronger the acid.
- Sun Jan 24, 2021 9:02 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Approximately x
- Replies: 18
- Views: 710
Re: Approximately x
You're good to approx. when the K value is 10^-4 or smaller
- Sun Jan 24, 2021 9:00 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Justin Sarquiz Step-Up Question
- Replies: 9
- Views: 635
Re: Justin Sarquiz Step-Up Question
Use the Ice method and the Ka value from the equations
- Sun Jan 17, 2021 6:05 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Using the ICE table
- Replies: 36
- Views: 1470
Re: Using the ICE table
The ICE box works in that context as well.
- Sun Jan 17, 2021 6:04 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Heating an Exothermic Reaction
- Replies: 7
- Views: 397
Re: Heating an Exothermic Reaction
It shifts to the reactants in order to restore equilibrium
- Sun Jan 17, 2021 6:02 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Getting two positive x values when using quadratic
- Replies: 43
- Views: 4906
Re: Getting two positive x values when using quadratic
You should test both values of x.
- Sun Jan 17, 2021 6:01 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Le Chatelier's Principle
- Replies: 19
- Views: 1493
Re: Le Chatelier's Principle
Le Chatelier's principle describes how a reaction maintains balance and equilibrium, by either shifting toward the reactants or products.
- Sun Jan 17, 2021 5:59 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Topic 5J Question 1
- Replies: 4
- Views: 93
Re: Topic 5J Question 1
I agree with the above posts, they are proportional to one another.
- Sun Jan 17, 2021 5:58 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Pressure Rule
- Replies: 29
- Views: 1505
Re: Pressure Rule
The moles of the solids and liquids do not count.
- Sun Jan 17, 2021 5:56 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Temperature
- Replies: 45
- Views: 1479
Re: Temperature
The delta H says where the reaction is endothermic or exothermic
- Sat Jan 16, 2021 6:40 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: When x is negligible in Equilibrium constant
- Replies: 34
- Views: 1604
Re: When x is negligible in Equilibrium constant
The safest bet is when K is less than 10^-4
- Sat Jan 16, 2021 6:38 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: ICE Box
- Replies: 28
- Views: 1340
Re: ICE Box
When it comes to strong acids and bases, the ICE box method is not really needed. Instead, a ratio is more useful since they fully dissociate.
- Sat Jan 16, 2021 6:36 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kw constant
- Replies: 25
- Views: 855
Re: Kw constant
The H2O molecules are in excess which results in their effect being negligible.
- Wed Dec 16, 2020 8:12 am
- Forum: Conjugate Acids & Bases
- Topic: Amphoteric
- Replies: 11
- Views: 589
Re: Amphoteric
Anything that can lose or add an H+ is considered amphoteric, such as H20.
- Wed Dec 16, 2020 8:10 am
- Forum: Polyprotic Acids & Bases
- Topic: Which one is more acidic: H3PO3 or H3PO4
- Replies: 17
- Views: 1297
Re: Which one is more acidic: H3PO3 or H3PO4
H3PO4 since the extra oxygen provides more electronegativity, which pulls the electrons even further away from the electron.
- Wed Dec 16, 2020 8:09 am
- Forum: Calculating the pH of Salt Solutions
- Topic: Hard Water vs. Soft Water
- Replies: 9
- Views: 874
Re: Hard Water vs. Soft Water
Hard water is alkaline whereas soft water is acidic.
- Wed Dec 16, 2020 8:08 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Calculating pH help
- Replies: 5
- Views: 406
Re: Calculating pH help
That picture shows the concept really clearly. Thank you.
- Wed Dec 16, 2020 8:05 am
- Forum: Biological Examples
- Topic: Co - VitB12
- Replies: 7
- Views: 495
Re: Co - VitB12
Co is within the vitamin itself.
- Wed Dec 16, 2020 8:04 am
- Forum: Conjugate Acids & Bases
- Topic: Alkaline
- Replies: 16
- Views: 809
Re: Alkaline
Yes, an alkaline solution is a basic one.
- Wed Dec 16, 2020 8:02 am
- Forum: Bronsted Acids & Bases
- Topic: Bronsted vs Lewis Acids and Bases
- Replies: 8
- Views: 631
Re: Bronsted vs Lewis Acids and Bases
All Bronsted acids are Lewis acids and all Bronsted bases are Lewis bases, but not the opposite way.
- Sun Dec 06, 2020 10:56 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Pka and Ka
- Replies: 6
- Views: 371
Re: Pka and Ka
pKa is the negative log of Ka
- Sun Dec 06, 2020 10:56 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Does pH indicate strength of an acid?
- Replies: 26
- Views: 2561
Re: Does pH indicate strength of an acid?
The lower the pH, the stronger the acid.
- Sun Dec 06, 2020 10:54 pm
- Forum: Bronsted Acids & Bases
- Topic: HF
- Replies: 15
- Views: 906
Re: HF
Since F has a high electronegativity, the F pulls the electron tight and makes it a weak acid.
- Sun Dec 06, 2020 10:52 pm
- Forum: Bronsted Acids & Bases
- Topic: bronsted vs. lewis acid
- Replies: 10
- Views: 438
Re: bronsted vs. lewis acid
A Lewis acid accepts electron pairs, but a Bronsted acid donates a proton
- Sun Dec 06, 2020 10:51 pm
- Forum: Bronsted Acids & Bases
- Topic: Strong & Weak Acid
- Replies: 6
- Views: 246
Re: Strong & Weak Acid
The longer the bond, the stronger the acid.
- Sun Nov 29, 2020 8:35 pm
- Forum: Coordinate Covalent Bonds
- Topic: OH
- Replies: 5
- Views: 465
Re: OH
Since it has a negative charge it is not radical.
- Sun Nov 29, 2020 8:35 pm
- Forum: Coordinate Covalent Bonds
- Topic: Group 13 Elements
- Replies: 4
- Views: 315
Re: Group 13 Elements
It is not just limited to Group 13.
- Sun Nov 29, 2020 8:34 pm
- Forum: Coordinate Covalent Bonds
- Topic: Lewis Diagram
- Replies: 5
- Views: 270
Re: Lewis Diagram
No, it looks the same as a normal bond.
- Sun Nov 29, 2020 8:32 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Ligands
- Replies: 9
- Views: 478
Re: Ligands
Any atom that binds with a transition metal is considered a ligand.
- Sun Nov 22, 2020 9:48 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: repulsion strength
- Replies: 10
- Views: 309
Re: repulsion strength
Since lone pairs occupy more volume, they cause more repulsion.
- Sun Nov 22, 2020 9:47 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: memorizing VSEPR models
- Replies: 13
- Views: 775
Re: memorizing VSEPR models
Quizlet has really helped me, I recommend it!
- Sun Nov 22, 2020 9:46 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone Pair E-
- Replies: 47
- Views: 2139
Re: Lone Pair E-
Yes, they are also their own region of electron density.
- Sun Nov 22, 2020 9:46 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Seesaw Shape
- Replies: 8
- Views: 468
Re: Seesaw Shape
Repulsion of a lone pair results in the bending of the two bonds which are no longer 90 degrees.
- Sun Nov 22, 2020 9:44 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: determining molecular structure
- Replies: 4
- Views: 232
Re: determining molecular structure
Pretty sure spectroscopy is used but we don't need to find it ourselves for the class.
- Sun Nov 22, 2020 9:43 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone Pairs and Bonding Pairs
- Replies: 6
- Views: 209
Re: Lone Pairs and Bonding Pairs
Lone pairs result in repulsion which causes it to not be linear.
- Sun Nov 15, 2020 3:21 pm
- Forum: Lewis Structures
- Topic: Central atom in NH4Cl
- Replies: 7
- Views: 534
Re: Central atom in NH4Cl
Since it is an ionic bond, they will need to be drawn separately.
- Sun Nov 15, 2020 3:19 pm
- Forum: Dipole Moments
- Topic: H-Bond acceptor
- Replies: 9
- Views: 456
Re: H-Bond acceptor
Only one of the H needs to be attached to a NOF element.
- Sun Nov 15, 2020 3:18 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: increasing polarizability
- Replies: 5
- Views: 1110
Re: increasing polarizability
Everything just said was really helpful. Basically, the bigger anions will have greater polarizability.
- Sun Nov 15, 2020 3:12 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic vs Atomic Radius
- Replies: 7
- Views: 496
Re: Ionic vs Atomic Radius
Ya, I was confused too because of the trends, but this makes sense. Thank you!
- Sun Nov 08, 2020 5:26 pm
- Forum: Bond Lengths & Energies
- Topic: Bond Length
- Replies: 22
- Views: 1295
Re: Bond Length
They are experimentally found so we don't need to find it ourselves.
- Sun Nov 08, 2020 5:24 pm
- Forum: Lewis Structures
- Topic: Expanded octet
- Replies: 4
- Views: 163
Re: Expanded octet
P, S, and Cl are elements that are able to have an expanded octet
- Sun Nov 08, 2020 5:23 pm
- Forum: Coordinate Covalent Bonds
- Topic: Coordinate covalent bonds
- Replies: 9
- Views: 806
Re: Coordinate covalent bonds
A coordinate covalent bond is when both electrons in a bond come from the same atom.
- Sun Nov 08, 2020 5:20 pm
- Forum: Resonance Structures
- Topic: delocalized electron energy
- Replies: 3
- Views: 166
Re: delocalized electron energy
I believe that they would have more energy since they are less tightly held by an atom.
- Sun Nov 08, 2020 5:19 pm
- Forum: Resonance Structures
- Topic: resonance structures
- Replies: 8
- Views: 440
Re: resonance structures
Resonance structures are used when more than one structure can represent the same molecule. Also makes it more stable
- Thu Nov 05, 2020 1:43 pm
- Forum: Octet Exceptions
- Topic: Exceptions List
- Replies: 4
- Views: 385
Re: Exceptions List
That video really cleared thing sup. Thank you. I find that doing more problems helps solidify my understanding and memorization of these expectations.
- Sat Oct 31, 2020 5:45 pm
- Forum: Electronegativity
- Topic: Partial Charge
- Replies: 5
- Views: 1957
Re: Partial Charge
Do we need to know VSEPR shapes and IMF for the exam?
- Sat Oct 31, 2020 5:43 pm
- Forum: Sigma & Pi Bonds
- Topic: sigma and pi bonds
- Replies: 27
- Views: 1703
Re: sigma and pi bonds
Yes, you are correct
- Sat Oct 31, 2020 5:42 pm
- Forum: Lewis Structures
- Topic: Drawing Lewis Structures
- Replies: 7
- Views: 589
Re: Drawing Lewis Structures
Do we need to know the differences between using a ring or a chain on the exam?
- Sat Oct 31, 2020 5:41 pm
- Forum: Dipole Moments
- Topic: Cancelling dipole moments
- Replies: 11
- Views: 4771
Re: Cancelling dipole moments
Are there any exceptions to this?
- Sat Oct 31, 2020 5:39 pm
- Forum: Electronegativity
- Topic: Electronegativity
- Replies: 16
- Views: 1080
Re: Electronegativity
When the electronegativity is stronger, the bond length gets shorter.
- Sat Oct 31, 2020 5:36 pm
- Forum: Ionic & Covalent Bonds
- Topic: Constants
- Replies: 5
- Views: 198
Re: Constants
We need to print out the formula sheet that has the constants on it.
- Sat Oct 31, 2020 5:35 pm
- Forum: Ionic & Covalent Bonds
- Topic: Nonpolar and polar
- Replies: 16
- Views: 1130
Re: Nonpolar and polar
Thanks for the help guys, this makes sense now!
- Sat Oct 31, 2020 5:34 pm
- Forum: Ionic & Covalent Bonds
- Topic: Strength of bonds
- Replies: 13
- Views: 658
Re: Strength of bonds
I am also sure that covalent bonds are the strongest types of bonds
- Sat Oct 31, 2020 5:33 pm
- Forum: Ionic & Covalent Bonds
- Topic: Salt
- Replies: 4
- Views: 259
Re: Salt
Salts are produced from a cation and an anion.
- Thu Oct 22, 2020 5:52 pm
- Forum: Einstein Equation
- Topic: m vs nm
- Replies: 66
- Views: 3788
Re: m vs nm
I don't think its a huge deal and the midterm is likely multiple choice, which means the answer choices will show you what to convert to.
- Thu Oct 22, 2020 5:50 pm
- Forum: DeBroglie Equation
- Topic: Sapling Question 29
- Replies: 6
- Views: 840
Re: Sapling Question 29
Thanks so much, I feel like just having the equations available during the test will be a big help.
- Thu Oct 22, 2020 5:48 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Sapling HW number 25
- Replies: 3
- Views: 156
Re: Sapling HW number 25
Thank you so much. This answered my question as well!
- Thu Oct 22, 2020 5:46 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 444893
Re: Rusty on High School Chem [ENDORSED]
I'm in a similar place since I haven't taken chemistry in the past 3 years. I find that youtube videos, such as Crash Course, also help me refresh and understand the concepts that may be difficult.
- Thu Oct 22, 2020 5:42 pm
- Forum: Student Social/Study Group
- Topic: How do you study?
- Replies: 19
- Views: 748
Re: How do you study?
Hi Nicolette!
I find that studying with a set plan allows me to prioritize the material I review and makes sure I use my time effectively. Best of luck studying!
I find that studying with a set plan allows me to prioritize the material I review and makes sure I use my time effectively. Best of luck studying!
- Fri Oct 09, 2020 4:01 pm
- Forum: Limiting Reactant Calculations
- Topic: Determining Limiting Reactant
- Replies: 4
- Views: 107
Re: Determining Limiting Reactant
Thanks so much Kayla. That really helped
- Fri Oct 09, 2020 3:58 pm
- Forum: Balancing Chemical Reactions
- Topic: Types of Chemical Reactions
- Replies: 8
- Views: 473
Re: Types of Chemical Reactions
Dr. Lavelle is really good on reviewing fundamentals before learning anything more advanced so I think you should be fine without too much review
- Fri Oct 09, 2020 3:55 pm
- Forum: Significant Figures
- Topic: Sig fig guide
- Replies: 5
- Views: 358
Re: Sig fig guide
These resources really helped me. Thank you so much. Great to review with :)