## Search found 55 matches

Sun Jan 10, 2021 9:15 pm
Forum: Ideal Gases
Topic: Kc vs Kp
Replies: 106
Views: 882

### Re: Kc vs Kp

Thank you to everyone for the explanations, I was also having trouble with this!
Sun Jan 10, 2021 9:09 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling Homework #5
Replies: 3
Views: 24

### Re: Sapling Homework #5

Thank you so much for the explanation, it really helped me figure out how to solve a similar problem I had!
Sun Jan 10, 2021 9:00 pm
Forum: Ideal Gases
Topic: Units of Temperature
Replies: 78
Views: 243

### Re: Units of Temperature

Hi! The units for temperature should be in kelvin I believe.
Sun Jan 10, 2021 8:58 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Concentrations
Replies: 9
Views: 22

### Re: Concentrations

I believe the concentrations of P and R should be given to you in the problem in some way.
Sun Jan 10, 2021 8:55 pm
Forum: Ideal Gases
Topic: Units for Pressure
Replies: 37
Views: 787

### Re: Units for Pressure

Hi! I believe the unit should be atm, I do not think we have to convert to pascals.
Wed Dec 16, 2020 6:24 pm
Forum: Dipole Moments
Topic: Dipole Arrows & Electronegativity
Replies: 6
Views: 42

### Re: Dipole Arrows & Electronegativity

Dipole arrows move/point towards the more electronegative atom.
Wed Dec 16, 2020 6:22 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs Angular
Replies: 20
Views: 80

### Re: Bent vs Angular

Bent and angular refer to the same molecular geometry.
Wed Dec 16, 2020 6:19 pm
Forum: Sigma & Pi Bonds
Topic: Pi Bonds
Replies: 15
Views: 89

### Re: Pi Bonds

Pi bonds are only applicable to covalent bonds.
Wed Dec 16, 2020 6:16 pm
Forum: Einstein Equation
Topic: units for E=hv
Replies: 11
Views: 105

### Re: units for E=hv

I thinks it's mostly going to be j/photon, but it can also be j/atom, it really depends on the question.
Wed Dec 16, 2020 6:11 pm
Forum: Lewis Acids & Bases
Topic: Water
Replies: 62
Views: 467

### Re: Water

Water can be both an acid and a base since it is amphoteric.
Sun Dec 06, 2020 11:04 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Number
Replies: 13
Views: 83

### Re: Coordination Number

The coordination number is the number of atoms the central atom is bonded to. I believe it is important to know because it allows us to find the name and shape of the coordination complex.
Sun Dec 06, 2020 10:57 pm
Forum: Naming
Topic: Naming quizlet
Replies: 41
Views: 253

### Re: Naming quizlet

Thank you so much for sharing this with us, it is really helpful!
Sun Dec 06, 2020 10:54 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Sapling Week 9
Replies: 6
Views: 37

### Re: Sapling Week 9

The most common geometry for a complex with a coordination number of 6 would just be octahedral.
Sun Dec 06, 2020 10:49 pm
Forum: Naming
Topic: Roman numeral
Replies: 5
Views: 40

### Re: Roman numeral

Thanks everyone for the clarification, I was always having a hard time with finding the oxidation number!
Sun Dec 06, 2020 9:14 pm
Forum: Naming
Topic: "(en)" Sapling
Replies: 19
Views: 98

### Re: "(en)" Sapling

Thank you to everyone for the clarification, I also was wondering what that meant as well!
Sun Nov 29, 2020 11:42 pm
Forum: Hybridization
Topic: Sigma and Pi bonds
Replies: 21
Views: 140

### Re: Sigma and Pi bonds

One sigma bond is just a single bond and one can be found in all bonds. Pi bonds are found in double and triple bonds. There is 1 pi bond and 1 sigma bond in a double bond and 2 pi bonds and 1 sigma bond in a triple bond. Hope this helps!
Sun Nov 29, 2020 11:32 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: finding the shape of a molecule
Replies: 6
Views: 32

### Re: finding the shape of a molecule

I think when we are trying to find the shape of a molecule, you have to draw/use the most stable lewis structure, but I am not very sure. This is also something that I wanted to know as well.
Sun Nov 29, 2020 11:19 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Determining Molecular Shape
Replies: 9
Views: 42

### Re: Determining Molecular Shape

Molecular geometry is not affected by bond type, it is affected by the amount of lone pairs there are.
Sun Nov 29, 2020 11:13 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Shape Names
Replies: 50
Views: 272

### Re: Shape Names

The shape would be bent or angular, and you can use either term to describe the shape since they mean the same thing.
Sun Nov 29, 2020 11:06 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Equatorial/ Axial Planes
Replies: 14
Views: 73

### Re: Equatorial/ Axial Planes

Equatorial atoms positioned horizontally on the same plane as the central atom and surround it you could say, while axial atoms are vertical which would be above and below the central atom.
Sun Nov 29, 2020 10:49 pm
Forum: Lewis Acids & Bases
Topic: angle size
Replies: 11
Views: 75

### Re: angle size

I was also having some trouble with angle size, thanks to everyone for the explanations and the resources to figure this out, it was very helpful!
Sun Nov 29, 2020 9:42 pm
Forum: Hybridization
Topic: Single Bonds and Sigma Bonds
Replies: 23
Views: 101

### Re: Single Bonds and Sigma Bonds

Yes, all single bonds contain a sigma bond and a double and triple bond also contain one sigma bond as well.
Sun Nov 29, 2020 9:38 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: sigma vs pi bonds
Replies: 33
Views: 179

### Re: sigma vs pi bonds

All single bonds contain a sigma bond, double bonds contain a sigma bond and a pi bond, and lastly a triple bond has one sigma bond and two pi bonds.
Sun Nov 29, 2020 8:03 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polarity
Replies: 17
Views: 73

### Re: Polarity

Thank you to everyone for the explanations, I was also having some trouble with this topic!
Sun Nov 22, 2020 10:25 pm
Forum: Ionic & Covalent Bonds
Topic: Rules of ionization energy
Replies: 18
Views: 110

### Re: Rules of ionization energy

Ionization energy increases as you go up and across (to the right) the periodic table.
Sun Nov 22, 2020 10:16 pm
Forum: Electronegativity
Topic: Trick for remembering periodic trends
Replies: 11
Views: 109

### Re: Trick for remembering periodic trends

Thank you for sharing, this is really helpful!
Sun Nov 22, 2020 8:23 pm
Forum: Electronegativity
Topic: Periodic trend
Replies: 17
Views: 135

### Re: Periodic trend

Yes, you are correct. Electron affinity and ionization energy follow/have the same trend as electronegativity.
Sun Nov 22, 2020 8:12 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: What exactly is a dipole? [ENDORSED]
Replies: 16
Views: 115

### Re: What exactly is a dipole?[ENDORSED]

Thank you so much to everyone for the clarification, I was also having trouble with this topic!
Sun Nov 22, 2020 8:10 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: London Forces [ENDORSED]
Replies: 19
Views: 123

### Re: London Forces[ENDORSED]

Yes, london dispersion Forces are found in all molecules but they are the weakest bond.
Sun Nov 22, 2020 8:02 pm
Forum: General Science Questions
Topic: # of chem posts
Replies: 27
Views: 314

### Re: # of chem posts

By today, we should have 35 posts and 50 by the end of the quarter since we have to post five posts each week.
Sun Nov 15, 2020 11:06 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Textbook 2D.9
Replies: 4
Views: 33

### Textbook 2D.9

Hi everyone! Can someone help me out with this problem from the textbook?
"Arrange the cations, Rb^+, Be ^2+, and Sr^2+ in order of increasing polarizing power. Explain your reasoning."
Sun Nov 15, 2020 10:32 pm
Forum: Electronegativity
Topic: determining electronegativity
Replies: 31
Views: 250

### Re: determining electronegativity

I was also having trouble with determining electronegativity, thank you to everyone for the clarification, it really helped!
Sun Nov 15, 2020 9:58 pm
Forum: Lewis Structures
Topic: Textbook 2B.5
Replies: 1
Views: 7

### Textbook 2B.5

I'm having trouble with this problem in the textbook, can someone help me out?
"Draw the Lewis structure of (a) tetrahydridoborate ion, (b) hypobromite ion, (c) amide ion,"
Sun Nov 15, 2020 8:21 pm
Forum: Lewis Structures
Topic: Drawing Lewis Structures on Midterm
Replies: 31
Views: 149

### Re: Drawing Lewis Structures on Midterm

I think we do have to draw the lewis structure with the lowest fromal charge since it is the most stable, but I don't think we will have to draw them on the midterm since it is multiple choice.
Sun Nov 15, 2020 8:08 pm
Forum: Lewis Structures
Topic: Lewis acids and Bases
Replies: 20
Views: 119

### Re: Lewis acids and Bases

I was also having a hard time with the classification of Lewis Acids and Bases, so I'm glad you asked. Thank you so much to everyone for the clarification, it was very helpful!
Sun Nov 08, 2020 11:31 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Subshell Energies
Replies: 6
Views: 48

### Re: Subshell Energies

I am also glad you asked this question as well. This is something I am also having trouble understanding and am confused about, so hopefully someone can help us out.
Sun Nov 08, 2020 11:21 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: S and P electrons
Replies: 14
Views: 112

### Re: S and P electrons

P electrons have a higher energy than s electrons because they are farther away from the nucleus. The farther away the electron is from the nucleus means it will have higher energy and the closer the elctron is to the nucleus means it will have lower energy.
Sun Nov 08, 2020 11:04 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Sapling #4
Replies: 8
Views: 74

### Re: Sapling #4

Thanks so much everyone for the explanation! I was also having trouble solving this problem, but now I see what I was doing wrong.
Sun Nov 08, 2020 11:00 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Ions
Replies: 8
Views: 42

### Re: Ions

Yes it is and it can be either a cation or an anion. An anion has a negative charge since it gains an electron while a cation has a positive charge since it loses an electron.
Sun Nov 08, 2020 9:25 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: The orbitals
Replies: 8
Views: 67

### Re: The orbitals

Hi! I believe that we need to know the location of the s,p,d,and f blocks on the periodic table and how many orbitals are in each. "2s" is represented by the row of the periodic table where it is located so for this it would be the second row followed by the orbital it is in which is s and...
Sun Nov 01, 2020 8:19 pm
Forum: Properties of Electrons
Topic: What does this symbol mean?
Replies: 11
Views: 140

### Re: What does this symbol mean?

I was also very confused on what this symbol meant, so thank you to everyone who clarified what it was!
Sun Nov 01, 2020 8:14 pm
Forum: DeBroglie Equation
Replies: 21
Views: 127

Avogadro's number is 6.022*10^23 and it is used to describe the amount of something there is in a mole.
Sun Nov 01, 2020 8:09 pm
Forum: Photoelectric Effect
Topic: Participation points
Replies: 16
Views: 159

### Re: Participation points

Your TA checks if you have posted your five posts for the week and that is how you get your participation points, but it has to be by or before 11:59 on Sunday.
Sun Nov 01, 2020 8:02 pm
Forum: Properties of Light
Topic: Is c always the speed of light?
Replies: 88
Views: 446

### Re: Is c always the speed of light?

Yes, like everyone else has stated, C is always going to represent the speed of light.
Sun Nov 01, 2020 7:59 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Sapling hw #19
Replies: 4
Views: 92

### Re: Sapling hw #19

I was also having a hard time with this problem, but your explanantions helped me a lot on how to go at solving it. Thank you so much!
Sun Oct 18, 2020 10:55 pm
Forum: Photoelectric Effect
Topic: Sapling clarification
Replies: 15
Views: 99

### Re: Sapling clarification

I was also unsure of when the sapling weeks 2, 3, and 4 homework was due after he sent out his email. Thanks everyone for the clarification!
Sun Oct 18, 2020 10:45 pm
Forum: Student Social/Study Group
Topic: How are you studying?
Replies: 203
Views: 1248

### Re: How are you studying?

I study by taking notes on the lectures and doing some of the pratice problems from the book so I can use them as a future reference for problems I may see on homework assignments or exams. I also make sure to highlight important topics in my notes and also keep them organized, as well as make note ...
Sun Oct 18, 2020 10:27 pm
Forum: Properties of Light
Topic: Chemistry Community Points
Replies: 10
Views: 85

### Re: Chemistry Community Points

Yes, comments, questions, and replies count as a point for the chemistry community participation and you have to post five each week.
Sun Oct 18, 2020 10:21 pm
Forum: Photoelectric Effect
Topic: photoelectric effect
Replies: 17
Views: 115

### Re: photoelectric effect

Yes threshold energy and work function are the same thing. Threshold energy was just the term used when the study was first conducted, but today it is more commonly known as work function.
Sun Oct 18, 2020 10:12 pm
Forum: Einstein Equation
Topic: m vs nm
Replies: 66
Views: 412

### Re: m vs nm

I believe that leaving your answer in either nanometers or meters is fine but wavelength is usually expressed in nm. Ususally the question will specify what units your answer should be in.
Sun Oct 11, 2020 7:58 pm
Forum: Significant Figures
Topic: Sapling Question 2
Replies: 14
Views: 111

### Re: Sapling Question 2

The 2 should be positive because when you move decimals to the left, your x value will be positive, but if you move the decimal to the right, your x value will be negative and in this case the decimal moves to the left so the 2 must be positive.
Sun Oct 11, 2020 7:20 pm
Forum: SI Units, Unit Conversions
Topic: Sampling
Replies: 9
Views: 88

### Re: Sampling

I believe that the sapling homework for week 2 is due on week 3 becuase that's when he has it due on ccle
Wed Oct 07, 2020 1:42 pm
Forum: Limiting Reactant Calculations
Topic: Actual and Theoretical yields
Replies: 14
Views: 123

### Re: Actual and Theoretical yields

Hi! I dont think there is ever any instance where the actual and theoretical yields will ever be the same. The reason for this is because the actual yield will always be less than the theoretical yield because of side reactions, impurities in the reactant, etc. There is no guarentee that any of thes...
Wed Oct 07, 2020 1:29 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reactants
Replies: 9
Views: 55

### Limiting Reactants

Hi!
I was wondering if there could be multiple limiting reactants in a reaction or if there is only ever one limiting reactant in a reaction?
Mon Oct 05, 2020 12:29 pm
Forum: Molarity, Solutions, Dilutions
Topic: Question about Moles of Solute
Replies: 10
Views: 82

### Question about Moles of Solute

When diluting a solution, will the moles of the solute always remain the same or are there certain circumstances that will cause the amount of moles to change?