Search found 29 matches
- Wed Jan 17, 2018 11:03 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Radiation vs. Convection
- Replies: 3
- Views: 438
Radiation vs. Convection
What is the difference between the two?
- Sat Dec 09, 2017 2:00 am
- Forum: Hybridization
- Topic: Radicals [ENDORSED]
- Replies: 1
- Views: 311
Radicals [ENDORSED]
Does a radical count as a region of electron density when determining hybridization and shape?
- Fri Dec 08, 2017 10:28 pm
- Forum: Hybridization
- Topic: Composition of a Bond
- Replies: 6
- Views: 890
Re: Composition of a Bond
Oh yeah I totally overlooked the lone pairs, thanks!
- Fri Dec 08, 2017 10:10 pm
- Forum: Hybridization
- Topic: Composition of a Bond
- Replies: 6
- Views: 890
Composition of a Bond
Would the composition of the OH bond in HCOOH be made up of a sigma(H1s, O2s)? Thanks!
- Thu Dec 07, 2017 12:32 am
- Forum: Octet Exceptions
- Topic: Biradicals [ENDORSED]
- Replies: 1
- Views: 380
Biradicals [ENDORSED]
When would a biradical exist and how would you know to draw a molecule with a biradical?
- Wed Dec 06, 2017 2:04 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: 12.47 [ENDORSED]
- Replies: 2
- Views: 390
12.47 [ENDORSED]
Why does a higher oxidation number increase acidity?
- Wed Dec 06, 2017 12:08 am
- Forum: Amphoteric Compounds
- Topic: Acidic, basic, or amphoteric? [ENDORSED]
- Replies: 4
- Views: 1989
Acidic, basic, or amphoteric? [ENDORSED]
How to tell the difference between them?
- Mon Dec 04, 2017 9:03 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: J.5
- Replies: 2
- Views: 442
J.5
For J.5.C why does the net equation have 2H2O as a product?
- Sun Dec 03, 2017 9:01 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: J.5 Problem
- Replies: 3
- Views: 589
J.5 Problem
I was wondering why the ionic equation wouldn't be (H+)+(F-)+(Na+)+(OH-) > (Na+)+(F-)+H2O instead of HF+(Na+)+(OH-) > (Na+)+(F-)+H2O
- Sun Dec 03, 2017 6:24 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH and pOH
- Replies: 10
- Views: 1423
Re: pH and pOH
The p in pH will stand for potential, potential hydrogen
- Sun Dec 03, 2017 6:15 pm
- Forum: Lewis Acids & Bases
- Topic: Bronsted vs Lewis
- Replies: 6
- Views: 821
Bronsted vs Lewis
Can someone remind me the difference between the two?
- Wed Nov 22, 2017 10:05 pm
- Forum: Naming
- Topic: di, bis, tri, tris, etc
- Replies: 4
- Views: 608
Re: di, bis, tri, tris, etc
Further examples of polydente ligands are carbonato, oxalato, and nitro
- Wed Nov 22, 2017 10:03 pm
- Forum: Naming
- Topic: Naming the metal
- Replies: 4
- Views: 502
Naming the metal
When do you know when to name the metal alone, with an -ate, or as an ion?
- Sat Nov 18, 2017 1:36 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent or linear?
- Replies: 11
- Views: 2030
Bent or linear?
Would a molecule with a double/triple bond on one side of a central atom and a single bond on the other side of that atom be linear or bent?
- Sat Nov 18, 2017 1:32 pm
- Forum: Bond Lengths & Energies
- Topic: Regions of Electron Density
- Replies: 4
- Views: 842
Regions of Electron Density
Is a double bond considered one region or two regions of electron density, and so on with other multiple bonds?
- Sun Nov 12, 2017 12:09 pm
- Forum: Electronegativity
- Topic: Electronegativity and electron affinity
- Replies: 3
- Views: 543
Electronegativity and electron affinity
What is the difference the two?
- Sun Nov 12, 2017 12:05 pm
- Forum: Ionic & Covalent Bonds
- Topic: Bond types
- Replies: 2
- Views: 402
Bond types
What are the differences between ionic, nonpolar, polar, and covalent bonds? And examples?
- Mon Nov 06, 2017 4:26 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3886965
Re: Post All Chemistry Jokes Here
Derek Waters 1A wrote:Do you know any good sodium jokes?
Na.
You should, they’re sodium funny!
Thats so funny!!
- Sun Nov 05, 2017 6:23 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic vs Covalent Bonds
- Replies: 4
- Views: 566
Ionic vs Covalent Bonds
Which one is stronger?
- Sun Nov 05, 2017 6:20 pm
- Forum: Lewis Structures
- Topic: Expanded Octet Rule
- Replies: 3
- Views: 505
Expanded Octet Rule
Can someone please explain why phosphorous can form an expanded octet but not other elements close to it like silicon?
- Fri Oct 27, 2017 5:15 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Tl3+ electron configuration
- Replies: 2
- Views: 5013
Tl3+ electron configuration
Why is the electron configuration for Tl3+ [Xe]4f14,5d10 and not [Xe]4f14,5d8,6s2?
- Fri Oct 27, 2017 4:59 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 3.5 HW Problem
- Replies: 1
- Views: 289
3.5 HW Problem
Part b for this problem is asking for the electron configuration for Cu+, I put down [Ar]3d^8,4s^2 but the answer is [Ar]3d^10. So, even though the 4s orbital comes first on the period table, is it not filled first? Does that go from all other orbitals as well?
- Fri Oct 20, 2017 5:54 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Magnetic Spin Numbers
- Replies: 3
- Views: 403
Re: Magnetic Spin Numbers
When a orbital is filled, the sub shell's 'spaces' are first filled spin up (+1/2). After each 'space' is occupied by one electron, the electrons will start pairing, which is when they would be spin down (-1/2). Therefore, you would know which magnetic spin number to use based on where the electron ...
- Fri Oct 20, 2017 5:45 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: D-Orbital
- Replies: 4
- Views: 910
D-Orbital
For the p-orbital we can use subscripts x, y, and z to indicate which sub shell the electron has ended up in, but what subscripts would be used for the d-orbital, since it has five sub shells?
- Thu Oct 12, 2017 8:50 pm
- Forum: Properties of Light
- Topic: Conversions
- Replies: 3
- Views: 384
Re: Conversions
I was confused for a bit too because sometimes the book automatically jumps from m to nm too but the number will say #x10^-7 and not 10^-9. However, this is probably because the spectrum we typically see nm in are in the hundreds. For example 7.0x10^-7 = 700 nm and on the other hand, 7.0x10^-9 m is ...
- Thu Oct 12, 2017 8:36 pm
- Forum: Properties of Electrons
- Topic: Stefan-Boltzmann law units
- Replies: 1
- Views: 318
Stefan-Boltzmann law units
In the Stefan-Botlzmann law, where Total intensity=a constant x T^4, why is the Kelvin in the constant (5.67x10^-8 Wm^-2K^-4) denoted as K^-4?
- Thu Oct 05, 2017 10:18 pm
- Forum: SI Units, Unit Conversions
- Topic: Exercise F11
- Replies: 4
- Views: 376
Re: Exercise F11
Adrian Lim 1J wrote:Hi,
Are you talking about part a with Na, Al, and F? After dividing all three by the smallest, I got 5.9, so I would assume you could round to 6.
Yes, and ah ok thanks!
- Thu Oct 05, 2017 7:28 pm
- Forum: SI Units, Unit Conversions
- Topic: Exercise F11
- Replies: 4
- Views: 376
Exercise F11
After I have converted all my mass percentages to moles, I am left with 2.9 mol, 1 mol, and 5.83 mol to use for my empirical formula ratio. Is it ok to round my 5.83 mol to 6?
- Mon Oct 02, 2017 5:07 pm
- Forum: Balancing Chemical Reactions
- Topic: Fundamental Exercise H.11
- Replies: 2
- Views: 413
Fundamental Exercise H.11
In the exercise, it is asked that you balance two stages of a reaction. I have balanced the first stage, but I am confused on what to use as my reactants for the second stage... Do I include the stoichiometric coefficient from the first balanced equation?