Search found 19 matches

by James Nguyen 3G
Sun Dec 10, 2017 1:07 am
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: OxoAcid strength
Replies: 2
Views: 311

Re: OxoAcid strength

The conjugate base is more stable due to resonance and electron withdrawing properties of oxygen.
by James Nguyen 3G
Sun Dec 10, 2017 1:04 am
Forum: Administrative Questions and Class Announcements
Topic: Final
Replies: 3
Views: 302

Re: Final

The locations are listed on his website under Final Rooms and review sessions on the right hand side.
by James Nguyen 3G
Sun Dec 10, 2017 1:00 am
Forum: Quantum Numbers and The H-Atom
Topic: How many electrons with given quantum numbers including ml
Replies: 3
Views: 251

Re: How many electrons with given quantum numbers including ml

I believe it will always be 2 unless a specific spin number is included or if a principle/rule is violated.
by James Nguyen 3G
Sun Dec 03, 2017 9:16 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Noble Gas increasing pressure
Replies: 3
Views: 334

Re: Noble Gas increasing pressure

The concentration of the two relevant groups (reactants and products) still remain the same before and after the addition of the inert gas, so the reaction would proceed as it would either way.
by James Nguyen 3G
Sun Dec 03, 2017 9:10 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Number
Replies: 4
Views: 284

Re: Coordination Number

Yes, it is the number of bonds attached to the central atom, but only referring to the ligands (ignore cations/anions).
by James Nguyen 3G
Sun Nov 26, 2017 4:54 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Polydentate ligands
Replies: 2
Views: 189

Re: Polydentate ligands

I believe the denticity just refers to how many times the ligand can bond to the transition metal. However, they generally do donate all of these electrons.
by James Nguyen 3G
Sun Nov 26, 2017 4:42 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Some clarification about ligands
Replies: 5
Views: 224

Re: Some clarification about ligands

Ligand refers to the atom or molecule that binds to the central metal atom. When Ammonia forms part of a coordination compound with a transition metal, such as Iron, Ammonia is considered a ligand.
by James Nguyen 3G
Sun Nov 19, 2017 11:57 pm
Forum: Sigma & Pi Bonds
Topic: double bonds
Replies: 5
Views: 418

Re: double bonds

The pi bond is created by the overlap between the orbitals that are brought together by the sigma bond.
by James Nguyen 3G
Sun Nov 19, 2017 11:56 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs
Replies: 4
Views: 225

Re: Lone Pairs

Lone pairs repel regions of electron density in different ways than bonds do in that they repel them more than bonds do, so they push out more and change the angle that would be there if it were all bonds.
by James Nguyen 3G
Sun Nov 12, 2017 9:20 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Most Favorable Formal Charge
Replies: 5
Views: 2224

Re: Most Favorable Formal Charge

The more electronegative atom should generally have the negative charge if there is one, and the less electronegative atom should generally have the positive charge if there is one.
by James Nguyen 3G
Sun Nov 12, 2017 8:59 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent Bonding: Polar and Non-polar
Replies: 6
Views: 393

Re: Covalent Bonding: Polar and Non-polar

A polar bond is when the bond is not quite ionic but the difference in electronegativity is still signifucant, such as a difference of 1.0. A nonpolar bond is when the electronegativities are more similar, such as between Carbon and Hydrogen.
by James Nguyen 3G
Sun Nov 05, 2017 11:20 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bonds Having Covalent Character
Replies: 2
Views: 176

Re: Ionic Bonds Having Covalent Character

All Ionic bonds have covalent character because there is still attraction between the cation and the electrons that the anion contains, which causes a 'distortion' of the electrons, which is similar to a covalent bond and creates covalent character depending on the level of distortion.
by James Nguyen 3G
Sun Nov 05, 2017 11:17 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge
Replies: 8
Views: 456

Re: Formal Charge

When the formal charges are zero and the more electronegative / higher Ionization energy atoms are charged if the whole molecule has a charge.
by James Nguyen 3G
Sun Oct 29, 2017 2:02 pm
Forum: Formal Charge and Oxidation Numbers
Topic: How to find the energy lowest structure?
Replies: 2
Views: 431

Re: How to find the energy lowest structure?

The lowest energy structure will generally have the lowest possible formal charges and also preferably have all the atoms contain octets.
by James Nguyen 3G
Thu Oct 26, 2017 6:16 pm
Forum: *Shrodinger Equation
Topic: Electron Spin
Replies: 6
Views: 434

Re: Electron Spin

Two electrons generally have to be opposite spins to be paired in an orbital. The numbers are different depending on the direction they spin (counterclockwise, clockwise)
by James Nguyen 3G
Sun Oct 22, 2017 5:25 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Angular Momentum Quantum Number [ENDORSED]
Replies: 3
Views: 232

Re: Angular Momentum Quantum Number [ENDORSED]

It determines the shape of the orbit in which the electron resides, but there is no way to determine exactly where in this orbit the electron is, rather we can predict the region it is generally restricted to.
by James Nguyen 3G
Sun Oct 22, 2017 5:21 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Post-Module Question #20 [ENDORSED]
Replies: 2
Views: 239

Re: Post-Module Question #20 [ENDORSED]

I believe that you would use the equation K = 1/2mv^2 to find kinetic energy, using delta v and the mass of an electron then multiply this by avogadro's constant.
by James Nguyen 3G
Thu Oct 05, 2017 8:24 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: E.15 [ENDORSED]
Replies: 10
Views: 695

Re: E.15 [ENDORSED]

Are we expected to understand this concept for the upcoming test? As in sulfides, chlorides, etc.
by James Nguyen 3G
Thu Oct 05, 2017 8:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019765

Re: Post All Chemistry Jokes Here

Technically, Alcohol is a solution

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