Search found 29 matches
- Wed Jun 13, 2018 10:35 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Oxidation State
- Replies: 3
- Views: 509
Re: Oxidation State
We are not responsible for knowing the names of the compounds.
- Wed Jun 13, 2018 10:34 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Oxidation State
- Replies: 3
- Views: 509
Re: Oxidation State
We are not responsible for knowing the names of the compounds.
- Wed Jun 13, 2018 9:55 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam [ENDORSED]
- Replies: 5
- Views: 735
Re: Final Exam [ENDORSED]
okay thank you!
- Wed Jun 13, 2018 9:06 pm
- Forum: Hybridization
- Topic: Hybridization [ENDORSED]
- Replies: 3
- Views: 614
Re: Hybridization [ENDORSED]
My bad I meant two lone pairs. thank you!
- Wed Jun 13, 2018 8:46 pm
- Forum: Hybridization
- Topic: Hybridization [ENDORSED]
- Replies: 3
- Views: 614
Hybridization [ENDORSED]
what would the hybridization of Xe be in XeF4 ? I'm confused as to how to figure this out since the central atom has two regions of electron density
- Wed Jun 13, 2018 7:10 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam [ENDORSED]
- Replies: 5
- Views: 735
Re: Final Exam [ENDORSED]
What percentage of old material will be asked? will it be 50% material since the midterm and 50% from before the midterm ?
- Wed Jun 06, 2018 8:42 pm
- Forum: Naming
- Topic: Naming on Final
- Replies: 8
- Views: 1146
Re: Naming on Final
So for homework problems if we ignore the naming, we won't get points off correct?
- Sun Jun 03, 2018 10:44 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lewis Structure and Molecular Shape
- Replies: 3
- Views: 406
- Sun Jun 03, 2018 10:43 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lewis Structure and Molecular Shape
- Replies: 3
- Views: 406
Re: Lewis Structure and Molecular Shape
No valence electrons are the only electrons that participate in bonding and therefore determine the overall molecular shape
- Sun Jun 03, 2018 10:39 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal charge purpose
- Replies: 40
- Views: 7240
Re: Formal charge purpose
okay thanks!
- Sun May 27, 2018 9:00 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Ions
- Replies: 4
- Views: 649
Re: Ions
Thanks for the clear up!
- Wed May 23, 2018 8:38 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Ions
- Replies: 4
- Views: 649
Re: Ions
so would the extra electron go to Boron?
- Tue May 22, 2018 10:29 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Ions
- Replies: 4
- Views: 649
Ions
When given a formula with a charge, how do we know which atom to apply the charge to?
- Mon May 21, 2018 11:21 pm
- Forum: Lewis Structures
- Topic: 3.39
- Replies: 5
- Views: 729
Re: 3.39
How do we know that the question is asking for ions ?
- Sun May 20, 2018 7:53 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal charge purpose
- Replies: 40
- Views: 7240
Re: Formal charge purpose
Is calculating the formal charge on a test necessary? will it be worth points?
- Sun May 20, 2018 7:51 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal charge purpose
- Replies: 40
- Views: 7240
Re: Formal charge purpose
Oh okay thank you !
- Sat May 19, 2018 2:08 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization exceptions [ENDORSED]
- Replies: 8
- Views: 1685
Re: Ionization exceptions [ENDORSED]
Yes i think we should know the overall concept
- Sun May 13, 2018 9:13 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal charge purpose
- Replies: 40
- Views: 7240
Re: Formal charge purpose
Instead of calculating the formal charge, could one simply make sure that all the atoms have the correct number of valence electrons ? or would this not work all the time?
- Sun May 13, 2018 9:04 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization exceptions [ENDORSED]
- Replies: 8
- Views: 1685
Re: Ionization exceptions [ENDORSED]
Thanks for the clarification !
- Tue May 08, 2018 10:33 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization exceptions [ENDORSED]
- Replies: 8
- Views: 1685
Ionization exceptions [ENDORSED]
Will we need to know the ionization exceptions for the midterm? Such as Oxygen has a lower ionization energy than Nitrogen even though it is to the right of Nitrogen?
- Sun May 06, 2018 9:07 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 3d before 4s
- Replies: 9
- Views: 1125
3d before 4s
Is it correct to say that as soon as the 3d orbital has at least one electron you write it before the 4s orbital except for Cr and Cu?
- Sun May 06, 2018 8:58 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Homework 2.43 [ENDORSED]
- Replies: 5
- Views: 648
Re: Homework 2.43 [ENDORSED]
Thank you! that makes sense
- Tue May 01, 2018 11:08 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Homework 2.43 [ENDORSED]
- Replies: 5
- Views: 648
Re: Homework 2.43 [ENDORSED]
Regarding this same question, I thought the electron configuration for silver (Ag) would be [Kr] 5s^2 4d^9 but the solutions manual has the answer as [Kr]4d^10 5s^1. Why does the 4d come before the 5s?
- Fri Apr 27, 2018 9:10 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: post module #20
- Replies: 3
- Views: 422
- Tue Apr 24, 2018 9:28 pm
- Forum: Einstein Equation
- Topic: HOMEWORK PROBLME 1.9 [ENDORSED]
- Replies: 5
- Views: 763
Re: HOMEWORK PROBLME 1.9 [ENDORSED]
For this problem under the column of event we had to figure out the event corresponding to the calculated values . For example ,a calculated frequency of 1.2*10^17 Hz corresponds to the event of a dental x-ray. Will we need to have the frequencies memorized to their specific waves on the electromagn...
- Mon Apr 23, 2018 9:30 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: post module #20
- Replies: 3
- Views: 422
post module #20
Could someone please explain how to do this? Use the above uncertainty in velocity to calculate the electron's uncertainty in kinetic energy. Then calculate the uncertainty in kinetic energy per mole of electrons(that is, per mole of hydrogen atoms).Comment on your value. (delta v= 3.4*10^10 m.s). I...
- Mon Apr 16, 2018 11:26 am
- Forum: Limiting Reactant Calculations
- Topic: M1 hw
- Replies: 3
- Views: 389
Re: M1 hw
thanks for the clear up!
- Wed Apr 11, 2018 11:10 pm
- Forum: Limiting Reactant Calculations
- Topic: M1 hw
- Replies: 3
- Views: 389
M1 hw
In the solutions manual to this question it shows the calculation of obtaining the moles of 2NH3 as 35.0g/17.031g. I was a bit confused on why 17.031 was being used, isn't the molar mass of 2NH3 31.038g.mol-1?
- Sat Apr 07, 2018 9:34 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Video 4 - post assessment [ENDORSED]
- Replies: 2
- Views: 297
Re: Video 4 - post assessment [ENDORSED]
Thank you! This cleared things up a lot.