## Search found 60 matches

Sat Jan 16, 2021 1:22 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Molecular phases
Replies: 6
Views: 17

### Re: Molecular phases

Aqueous things are solids that are dissolved one some liquid, usually water.
Sat Jan 16, 2021 1:20 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Gas
Replies: 16
Views: 67

### Re: Gas

The units would usually be given, but they can be interchanged in this class because they are similar.
Sat Jan 16, 2021 1:16 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: H2O as a Gas
Replies: 53
Views: 367

### Re: H2O as a Gas

Water would be included if it was in a gaseous form.
Sat Jan 16, 2021 1:15 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Memorizing relationship of Q and K
Replies: 9
Views: 40

### Re: Memorizing relationship of Q and K

I agree with Leanne. For the purposes of finding out which way the reaction is favored, think of Q as the number of products relative to the final equilibrium. If Q (products) is less than K, more products are needed.
Sat Jan 16, 2021 1:13 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Molar concentrations
Replies: 3
Views: 13

### Re: Molar concentrations

I also agree with Lily. They are necessary for finding values in many problems regarding equilibrium equations. Also, it is good to remember the quadratic formula for finding out what x is for each problem.
Fri Jan 08, 2021 8:08 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Favoring
Replies: 6
Views: 38

### Re: Favoring

Thank you for the infographic and explanations. They were very helpful.
Fri Jan 08, 2021 8:06 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Effect of speed on equilibrium
Replies: 6
Views: 29

### Re: Effect of speed on equilibrium

Agreed. At equilibrium, the forward and reverse reaction rates are the same.
Fri Jan 08, 2021 8:05 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Difference between Kp and Kc in lecture 3
Replies: 5
Views: 25

### Re: Difference between Kp and Kc in lecture 3

Someone in the post titled "Kc to Kp" answered how to convert between the two. Go check it out.
Fri Jan 08, 2021 8:02 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling #2
Replies: 1
Views: 30

### Re: Sapling #2

You can use the value that they give you for the equilibrium value of O2. If 0.19 moles of O2 is present at equilibrium, then twice as many moles of 2SO2 is present due to the values of the coefficients. Similarly, there must be the same amount of moles of 2SO2 and 2SO3. Therefore, at equilibrium, t...
Fri Jan 08, 2021 7:58 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kc to Kp
Replies: 8
Views: 51

### Re: Kc to Kp

I have not seen this equation before. Thank you!
Fri Dec 11, 2020 11:18 am
Forum: Amphoteric Compounds
Topic: Amphoteric
Replies: 8
Views: 84

### Re: Amphoteric

I also don't think it will be asked on the test because it wasn't gone over much in lectures.
Fri Dec 11, 2020 11:16 am
Forum: Bronsted Acids & Bases
Topic: Lewis and Bronsted acids and bases
Replies: 3
Views: 25

### Re: Lewis and Bronsted acids and bases

I think I was in the same review session as Nina and I agree with her explanation.
Fri Dec 11, 2020 11:14 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Sapling Week 9 HW Question 2
Replies: 11
Views: 100

### Re: Sapling Week 9 HW Question 2

I agree with what most other people have said. The number of bonds that the central transition metal has is the coordination number.
Fri Dec 11, 2020 11:11 am
Forum: Naming
Topic: Naming quizlet
Replies: 41
Views: 258

### Re: Naming quizlet

This is awesome. Thank you
Fri Dec 11, 2020 11:10 am
Forum: Determining Molecular Shape (VSEPR)
Topic: same plane example
Replies: 3
Views: 38

### Re: same plane example

I was also curious about this when I was doing that question. Thanks for the explanation.
Sun Dec 06, 2020 1:20 am
Forum: Naming
Topic: en
Replies: 8
Views: 74

### Re: en

Thank you for the table. It is very helpful.
Sun Dec 06, 2020 1:18 am
Forum: Hybridization
Topic: Unhybridized Orbitals in Relation to Hybridized Orbitals
Replies: 4
Views: 54

### Re: Unhybridized Orbitals in Relation to Hybridized Orbitals

I was also wondering something similar. Thank you for the explanation.
Sun Dec 06, 2020 1:17 am
Forum: Coordinate Covalent Bonds
Topic: Coordinate Covalent Bonds and Covalent Bonds
Replies: 7
Views: 70

### Re: Coordinate Covalent Bonds and Covalent Bonds

A coordinate covalent bond is when one atom donates both electrons from a lone pair to form a bond. Normal covalent bonds are when two atoms each share one electron.
Sun Dec 06, 2020 1:14 am
Forum: Resonance Structures
Topic: Stability
Replies: 13
Views: 104

### Re: Stability

I think Gabby's explanation is very accurate. Essentially, electrons have to find the most stable position so that they do not interact with other atoms.
Sun Dec 06, 2020 12:59 am
Forum: Significant Figures
Topic: When should I start looking at sig figs?
Replies: 31
Views: 231

### Re: When should I start looking at sig figs?

I agree with many others who have posted. On the calculator, I try to keep everything as precise as possible until the final sum.
Sat Nov 28, 2020 8:40 pm
Forum: Hybridization
Topic: Confused on Hybridization
Replies: 6
Views: 47

### Re: Confused on Hybridization

Count the regions of electron density. Every lone pair is one and every bond (whether it be single, double, or triple) is one. Then, use this table:

2 regions = sp
3 regions = sp2
4 regions = sp3
5 regions = sp3d
6 regions = sp3d2
Sat Nov 28, 2020 8:30 pm
Forum: Lewis Acids & Bases
Topic: question 17 sapling
Replies: 7
Views: 51

### Re: question 17 sapling

Thank you for the explanations everyone. They were very helpful.
Sat Nov 28, 2020 8:14 pm
Forum: Lewis Structures
Topic: Sapling Week 8 #12 [ENDORSED]
Replies: 3
Views: 73

### Re: Sapling Week 8 #12[ENDORSED]

Thank you for this explanation. It was really helpful.
Sat Nov 28, 2020 7:54 pm
Forum: Lewis Structures
Topic: Hybridization
Replies: 4
Views: 48

### Re: Hybridization

Thank you for this table. It makes it much easier to understand.
Sat Nov 28, 2020 7:51 pm
Forum: Octet Exceptions
Topic: Expanded Octet Question
Replies: 8
Views: 61

### Re: Expanded Octet Question

I just remember that Beryllium, Boron, and everything on the 3rd row and below can have an expanded octet. As for why, I think the other explanations are better than what I could explain.
Sun Nov 22, 2020 6:42 pm
Forum: Electronegativity
Topic: Relationship between Dispersion and Electronegativity
Replies: 6
Views: 30

### Re: Relationship between Dispersion and Electronegativity

These explanations are really helpful. Thanks everyone.
Sun Nov 22, 2020 6:39 pm
Forum: Dipole Moments
Topic: Dipole Moments Cancelling out
Replies: 10
Views: 84

### Re: Dipole Moments Cancelling out

I agree with what the other comments have said. The diagram is really helpful in visualizing this interaction.
Sun Nov 22, 2020 6:35 pm
Forum: Electronegativity
Topic: Trick for remembering periodic trends
Replies: 11
Views: 109

### Re: Trick for remembering periodic trends

This is really helpful. Thanks for sharing.
Sun Nov 22, 2020 6:26 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Finding negative pole of a molecule
Replies: 4
Views: 50

### Re: Finding negative pole of a molecule

I agree with Shanna. There is probably another way to figure it out, but I always look at electronegativity, being how much an atom pulls on electrons. The atom with the higher electronegativity will most likely be the part of the molecule with the negative charge.
Sun Nov 22, 2020 6:24 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizing Power vs Polarizability
Replies: 4
Views: 51

### Re: Polarizing Power vs Polarizability

I like to think of 'Polarizing power' as the ability to make things polar, being small cations. 'Polarizability' being the ability to become polarized, being large anions.
Sat Nov 14, 2020 11:40 pm
Forum: Coordinate Covalent Bonds
Topic: When do we use it
Replies: 9
Views: 59

### Re: When do we use it

I was also wondering when coordinate covalent bonds were used. Thanks for the explanations.
Sat Nov 14, 2020 11:38 pm
Forum: Octet Exceptions
Topic: Octet Exceptions Rules
Replies: 3
Views: 23

### Re: Octet Exceptions Rules

I was also confused as to which elements could or could not violate the octet rule. Thanks for the explanations.
Sat Nov 14, 2020 11:32 pm
Forum: Resonance Structures
Topic: lewis base or acid
Replies: 15
Views: 101

### Re: lewis base or acid

I believe there is a correlation. According to google, "All anions are Lewis bases, but not all Lewis bases are anions."
Sat Nov 14, 2020 11:23 pm
Forum: Ionic & Covalent Bonds
Topic: Electronegativity difference
Replies: 12
Views: 85

### Re: Electronegativity difference

I was also wondering it we were going to be told the electronegativity values on the test. If we aren't, then I advise mostly considering a bond to be covalent unless the two elements are very far apart from each other on the periodic table.
Sat Nov 14, 2020 11:19 pm
Forum: Ionic & Covalent Bonds
Topic: Hydrogen bonding not in H2S
Replies: 3
Views: 17

### Re: Hydrogen bonding not in H2S

I agree with Elena. I believe hydrogen bonds require a large electronegative difference that only Nitrogen, Oxygen, and Fluorine can provide with Hydrogen.
Sun Nov 08, 2020 7:55 pm
Forum: Resonance Structures
Topic: Electron spin
Replies: 12
Views: 47

### Re: Electron spin

I don't think it is an actual mathematical value. It is simply used to differentiate two electrons that are the same in all other ways. Up and down are subjective, especially when you are an electron.
Sun Nov 08, 2020 7:52 pm
Forum: Ionic & Covalent Bonds
Topic: Question about bond Length
Replies: 6
Views: 61

### Re: Question about bond Length

I don't think it's always possible to know the exact bond lengths. It is just important to remember that the order of shortest to longest is triple bonds, double bonds, then single bonds.
Sun Nov 08, 2020 7:49 pm
Forum: Ionic & Covalent Bonds
Topic: Identifying Ionic and Covalent Bonds
Replies: 10
Views: 39

### Re: Identifying Ionic and Covalent Bonds

If you subtract the higher from the lower electro-negativity, if it is higher than 2, it is ionic.
Sun Nov 08, 2020 7:47 pm
Forum: Resonance Structures
Topic: Rules for Determining Favored Structure
Replies: 8
Views: 34

### Re: Rules for Determining Favored Structure

I believe the structure with the total formal charge that is closest to 0 is favored. Also, negative is favored over positive charges.
Sun Nov 08, 2020 7:43 pm
Forum: Lewis Structures
Topic: Elements That Don't Need Octet
Replies: 2
Views: 19

### Re: Elements That Don't Need Octet

I think Beryllium is also an exception, but I am not sure exactly why these two are exceptions. If anyone else knows, it would be greatly appreciated.
Sun Nov 01, 2020 6:40 pm
Forum: Quantum Numbers and The H-Atom
Topic: 4th quantum number
Replies: 8
Views: 45

### Re: 4th quantum number

You are correct. Like Jordan said, we don't really need to determine them. They exist to show that no two electrons in an atom can be the same.
Sun Nov 01, 2020 6:38 pm
Forum: Quantum Numbers and The H-Atom
Topic: Spin States and Hund's Rule
Replies: 8
Views: 89

### Re: Spin States and Hund's Rule

I was also wondering this. Thanks for the explanations.
Sun Nov 01, 2020 6:37 pm
Forum: Quantum Numbers and The H-Atom
Topic: Energy Level Excited
Replies: 8
Views: 65

### Re: Energy Level Excited

I believe so. Exciting an atom does not add or remove electrons, so the number of electrons in the ground and any excited state are the same, giving you the atomic number.
Sun Nov 01, 2020 6:33 pm
Forum: DeBroglie Equation
Topic: When to Use De Broglie
Replies: 16
Views: 127

### Re: When to Use De Broglie

Like many have said before, to figure out either the wavelength, speed, or mass of a photon when given two of the other values.
Sun Nov 01, 2020 6:28 pm
Forum: Quantum Numbers and The H-Atom
Topic: Spin state
Replies: 25
Views: 172

### Re: Spin state

I don't think the "up" and "down" spins refer to actual up and down, but rather just to differentiate between the two. At least, that's what Lavelle told use we need to know for this class.
Sun Nov 01, 2020 6:24 pm
Forum: Trends in The Periodic Table
Topic: Electron Affinity vs Electronegativity
Replies: 7
Views: 51

### Re: Electron Affinity vs Electronegativity

I was also wondering what the difference between the two terms was. Thanks for the clarification.
Sat Oct 24, 2020 8:46 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: delta v
Replies: 6
Views: 77

### Re: delta v

I had a similar question. Thanks for answering.
Sat Oct 24, 2020 8:45 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Light's effects
Replies: 8
Views: 99

### Re: Light's effects

I also believe that photons are too small to impact a baseball's speed.
Sat Oct 24, 2020 8:36 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Where should the Rydberg Equation be used?
Replies: 11
Views: 82

### Re: Where should the Rydberg Equation be used?

I was also a little confused on when to use the Rydberg equation. Thanks for the help.
Sat Oct 24, 2020 8:24 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty equation with ±
Replies: 10
Views: 57

### Re: Uncertainty equation with ±

I was also a little confused on this issue. Thanks for the answers.
Sat Oct 24, 2020 8:21 pm
Forum: Ionic & Covalent Bonds
Topic: intermolecular vs intramolecular
Replies: 17
Views: 297

### Re: intermolecular vs intramolecular

An easy way that I remember is "international," which is between several nations, while "intra" is within one thing.
Sat Oct 17, 2020 11:49 pm
Forum: Einstein Equation
Topic: Planck's Number
Replies: 6
Views: 108

### Re: Planck's Number

I was also wondering what Planck's Number actually meant. Thanks for the explanation, everyone.
Sat Oct 17, 2020 11:48 pm
Forum: Einstein Equation
Topic: What are the units for E
Replies: 16
Views: 124

### Re: What are the units for E

The units should be joules, which is equal to kg*(m^2/s^2)
Sat Oct 17, 2020 11:20 pm
Forum: Photoelectric Effect
Topic: When are electrons excited vs ejected
Replies: 16
Views: 128

### Re: When are electrons excited vs ejected

This is also how I understood it. Good to know the difference, though.
Sat Oct 17, 2020 11:17 pm
Forum: Properties of Light
Topic: Showing Destructive Interference?
Replies: 5
Views: 79

### Re: Showing Destructive Interference?

Thanks for the visual. I was also wondering how destructive interference would be shown.
Sun Oct 11, 2020 10:12 pm
Forum: SI Units, Unit Conversions
Topic: The use of (__ mole Rxn) as a conversion method in stoichiometry
Replies: 4
Views: 68

### Re: The use of (__ mole Rxn) as a conversion method in stoichiometry

I was also wondering this. Thanks for the explanation.
Sun Oct 11, 2020 9:50 pm
Forum: Empirical & Molecular Formulas
Topic: order of formulas [ENDORSED]
Replies: 5
Views: 142

### Re: order of formulas[ENDORSED]

I was also wondering how the ordering was determined. Thanks for the explanation.
Sun Oct 11, 2020 9:47 pm
Forum: Molarity, Solutions, Dilutions
Topic: Formulas involved in Determining Solution Concentration
Replies: 8
Views: 86

### Re: Formulas involved in Determining Solution Concentration

Which formula you use depends on what the question is asking for. If the question is asking for one of the values for a solution at a single point in time, use M = n/v. If it is asking for the change in either the molarity or the volume after dilution, use M(initial)*V(initial)=M(final)*V(final).
Sun Oct 11, 2020 9:43 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Standard Number of Digits for Avogadro's Number?
Replies: 5
Views: 64

### Re: Standard Number of Digits for Avogadro's Number?

Interesting. I didn't know that constants were treated differently than other values in regards to significant figures.
Sun Oct 11, 2020 9:40 pm
Forum: Significant Figures
Topic: Sig Fig for numbers like 200, 3300, 4000
Replies: 6
Views: 49

### Re: Sig Fig for numbers like 200, 3300, 4000

I was wondering if the existence of the decimal point actually made a difference. Thanks for the clarification.

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