Search found 31 matches

by chemlover
Sun Jun 10, 2018 10:21 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent/angular [ENDORSED]
Replies: 5
Views: 153

Re: Bent/angular [ENDORSED]

Yes, however I think Dr.Lavelle will say angular.
by chemlover
Sun Jun 10, 2018 10:18 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Sigma vs Pi Bonds
Replies: 4
Views: 236

Re: Sigma vs Pi Bonds

Is this all we have to know in regards to stating what bonds there are?
by chemlover
Sun Jun 10, 2018 10:17 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Drawing coordination compounds
Replies: 2
Views: 107

Re: Drawing coordination compounds

I also don't think that they will be on their but anything is fair game for the final so I would definitely brush up on them.
by chemlover
Sun Jun 10, 2018 10:17 pm
Forum: Student Social/Study Group
Topic: Past Final Exams
Replies: 6
Views: 299

Re: Past Final Exams

can anyone email them to me as well? eoybfunding@gmail.com
by chemlover
Sun Jun 10, 2018 10:16 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 7
Views: 195

Re: VSEPR

Chapter 4 in the book has a really good chart with diagrams!
by chemlover
Sun Jun 10, 2018 10:15 pm
Forum: Properties of Electrons
Topic: Wave-like Properties of Electron
Replies: 5
Views: 195

Re: Wave-like Properties of Electron

I believe it is a given value.
by chemlover
Sun Jun 10, 2018 10:13 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 202
Views: 66473

Re: Saying Thank You to Dr. Lavelle

Dear Dr.Lavelle, Thankyou so much for teaching this class this quarter. Although I was really scared this quarter, you were a great professor. One thing I really enjoyed from your class was that you really taught the basics for those who weren't as familiar with the material from high school. Thanky...
by chemlover
Sat Jun 09, 2018 1:56 pm
Forum: Hybridization
Topic: Bond types
Replies: 4
Views: 196

Re: Bond types

do we need to know this for the Final? Like what possible questions could be asked?
by chemlover
Sat Jun 09, 2018 1:56 pm
Forum: Quantum Numbers and The H-Atom
Topic: Homework Question 2.41
Replies: 3
Views: 209

Re: Homework Question 2.41

do you think that Lavelle will focus on quantum on the final or more VESPR and more recent material?
by chemlover
Sat Jun 09, 2018 1:54 pm
Forum: Ionic & Covalent Bonds
Topic: Lowest Ionization Trend
Replies: 2
Views: 127

Re: Lowest Ionization Trend

is it the same as ionic radius?
by chemlover
Sat Jun 09, 2018 1:52 pm
Forum: Lewis Structures
Topic: Lowest energy lewis structure
Replies: 5
Views: 1020

Re: Lowest energy lewis structure

you want to make sure your bonds will make sure that the formal charge is the lowest.
by chemlover
Sat Jun 09, 2018 1:52 pm
Forum: Properties of Light
Topic: Review Session from yesterday
Replies: 1
Views: 114

Re: Review Session from yesterday

please let me know as well if you do!
by chemlover
Sat Jun 09, 2018 1:49 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration-(Sn)
Replies: 5
Views: 233

Re: Electron Configuration-(Sn)

I just remember that when writing them, for the energy levels,its f,d,s,p but in general you refer to the orbitals as s,p,d,f
by chemlover
Sat Jun 09, 2018 1:47 pm
Forum: Bronsted Acids & Bases
Topic: J.5
Replies: 2
Views: 184

acids and bases

Chem community isn't letting me post a new question so I thought id ask you. How can you tell if it’s acidic, basic, or amphoteic if we’re just given the molecule?
by chemlover
Sat Jun 09, 2018 1:42 pm
Forum: Ionic & Covalent Bonds
Topic: Help on 3.49
Replies: 2
Views: 131

Re: Help on 3.49

Once you draw the Lewis Structure you can use the formula for formal charge! (4-5)=-1
by chemlover
Sat Jun 09, 2018 1:40 pm
Forum: Naming
Topic: Naming on Final
Replies: 8
Views: 318

Re: Naming on Final

I think that you will have to know what molecule it is based on its name, but I'm guessing they will be fairly simple.
by chemlover
Sat Jun 09, 2018 1:38 pm
Forum: Hybridization
Topic: strength of sigma and pi bonds
Replies: 10
Views: 353

Re: strength of sigma and pi bonds

Why do Pi bonds break when they rotate?
by chemlover
Sat Jun 09, 2018 1:37 pm
Forum: Sigma & Pi Bonds
Topic: exceptions
Replies: 2
Views: 176

Re: exceptions

no, Lavelle didn't mention it I don't think.
by chemlover
Sat Jun 09, 2018 1:36 pm
Forum: Administrative Questions and Class Announcements
Topic: Grading question
Replies: 11
Views: 648

Re: Grading question

im not sure that 250 points will guarantee a C- because the exams and homework points are scaled differently so it depends what you score on them.
by chemlover
Sat Jun 09, 2018 1:34 pm
Forum: Lewis Acids & Bases
Topic: Protons are lewis acids?
Replies: 5
Views: 142

Re: Protons are lewis acids?

One of the UA's said that its positively charged when its a proton, but when it accepts its the opposite.
by chemlover
Sat Jun 09, 2018 1:33 pm
Forum: Amphoteric Compounds
Topic: Lecture slides
Replies: 1
Views: 178

Re: Lecture slides

send your email and I can email them to you!
by chemlover
Sat Jun 09, 2018 1:31 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical to molecular
Replies: 3
Views: 251

Re: Empirical to molecular

I believe this was one of the first examples Dr.Lavelle did in class during week 1! so if you take a look in your notes theres a step-by-step process!
by chemlover
Sun Apr 22, 2018 10:14 pm
Forum: Properties of Light
Topic: Memorizing formulas test 2
Replies: 16
Views: 536

Re: Memorizing formulas test 2

All of them should be on the test but I recommend doing similar problems until you get the hang of it because you naturally will start to remember the steps of how to solve those problems!
by chemlover
Sun Apr 22, 2018 10:09 pm
Forum: Properties of Light
Topic: test 2
Replies: 18
Views: 542

Re: test 2

Will we need to know what kind of electromagnetic radiation was used by finding the wavelength of radiation like in problem 1.33 for the test, or should we just know how to find what the radiation wavelength is?
by chemlover
Sun Apr 22, 2018 10:04 pm
Forum: DeBroglie Equation
Topic: Wavelength and De Broglie Equation [ENDORSED]
Replies: 9
Views: 270

Re: Wavelength and De Broglie Equation [ENDORSED]

Well, yes however you would use the De Broglie equation when its referring to mass as well.
by chemlover
Sun Apr 15, 2018 9:10 pm
Forum: Empirical & Molecular Formulas
Topic: Finding Molecular X
Replies: 9
Views: 311

Re: Finding Molecular X

I don't believe we have gone over that, I would ask a TA or Dr.Lavelle on Monday!
by chemlover
Sun Apr 15, 2018 9:08 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Which mass of oxygen should be used? [ENDORSED]
Replies: 23
Views: 907

Re: Which mass of oxygen should be used? [ENDORSED]

Dr. Lavelle usually rounds and when I do some practice problems with the actual number, I end up getting the same thing so I don't think you should stress to hard about that.
by chemlover
Sun Apr 15, 2018 9:06 pm
Forum: Empirical & Molecular Formulas
Topic: Finding Empirical and Molecular Formula [ENDORSED]
Replies: 6
Views: 369

Re: Finding Empirical and Molecular Formula [ENDORSED]

So if they are both the same and they can't be divided, they just remain the same?
by chemlover
Sun Apr 08, 2018 4:36 pm
Forum: Administrative Questions and Class Announcements
Topic: Test #1
Replies: 1
Views: 79

Re: Test #1

Yes! :)
by chemlover
Sun Apr 08, 2018 4:33 pm
Forum: Balancing Chemical Reactions
Topic: Catalysts [ENDORSED]
Replies: 4
Views: 157

Re: Catalysts [ENDORSED]

Yes, I believe you are correct. The catalyst isn't reacting, it's just speeding up the reaction.
by chemlover
Sun Apr 08, 2018 4:27 pm
Forum: Empirical & Molecular Formulas
Topic: Naming compounds
Replies: 4
Views: 162

Re: Naming compounds

Dr.Lavelle also mentioned in class on the first day that he would not give us a compound without its molecular formula until we learn exactly how to name them. Hope that helped!

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