Search found 20 matches

by Audrey Kang 2I
Thu Mar 10, 2016 11:22 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Interconversion of chair cyclohexane
Replies: 1
Views: 339

Interconversion of chair cyclohexane

Why is it that upon collision, the chair cyclohexane converts to the other ring-flip cyclohexane? If both versions of the chair cyclohexane are the same energy, wouldn't it also be possible for the cyclohexane to return to the previous/original version of the chair cyclohexane?
by Audrey Kang 2I
Thu Mar 10, 2016 2:08 am
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Newman Projections
Replies: 1
Views: 341

Newman Projections

When drawing newman structures for molecules that aren't simply ethanes, do we just replace hydrogens with substituents such as CH3 to represent propanes, butanes, etc...?
by Audrey Kang 2I
Wed Mar 09, 2016 3:54 am
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Course Reader pg. 106
Replies: 1
Views: 357

Course Reader pg. 106

Can the E-1,1-Bromo-Chloro-Propene also be named E-1-Bromo-1-Chloro-Propene?
by Audrey Kang 2I
Sun Mar 06, 2016 8:52 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Drawing Conformations
Replies: 2
Views: 431

Re: Drawing Conformations

No. I'm pretty sure Lavelle said we don't have to during lecture?
by Audrey Kang 2I
Wed Mar 02, 2016 2:17 pm
Forum: *Alkanes
Topic: Common Names
Replies: 1
Views: 356

Common Names

Obviously we should be familiar with the common names, but do we have to have the common names memorized? Or just be able to reference the common names if we wanted to name alkanes with common names instead of strictly using the IUPAC nomenclature?
by Audrey Kang 2I
Wed Mar 02, 2016 12:56 am
Forum: *Identifying Primary, Secondary, Tertiary, Quaternary Carbons, Hydrogens, Nitrogens
Topic: VSEPR and Hybridization
Replies: 1
Views: 368

VSEPR and Hybridization

Although we need to remember basic background information surrounding VSEPR and hybridization, do we really go beyond trigonal and tetrahedral shapes and maybe sp, sp2, and sp3 hybridization in the scope of this course?
by Audrey Kang 2I
Mon Feb 08, 2016 9:34 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: standard reduction potentials
Replies: 1
Views: 257

standard reduction potentials

When standard reduction potentials are given and they are given for the cathode reactions, you don't have to flip the sign to put it into the equation for Ecell = Ecathode - Eanode?
by Audrey Kang 2I
Sat Feb 06, 2016 4:44 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: example 14.3 in textbook
Replies: 1
Views: 312

example 14.3 in textbook

For example 14.3 in the textbook talking about Daniell cells and the application of the G=-nFE equation, where did they get the value for the moles of electrons? Is 2 moles of electrons just a value associated with Daniell cells or did they got through a process of balancing half reactions for the r...
by Audrey Kang 2I
Sun Jan 24, 2016 4:50 pm
Forum: Phase Changes & Related Calculations
Topic: phase change
Replies: 2
Views: 429

phase change

Why does solid carbon dioxide go directly into a gas at room temperature? Please explain conceptually and not using phase diagrams.
by Audrey Kang 2I
Sun Jan 17, 2016 1:12 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Adiabatic vs. Isolated
Replies: 1
Views: 400

Re: Adiabatic vs. Isolated

Adiabatic simply means that there is no exchange of heat (a.k.a. q=0). Isolated systems mean that there is no contact with the surroundings and that matter and energy are not exchanged with the surroundings.
by Audrey Kang 2I
Mon Jan 11, 2016 12:48 am
Forum: Phase Changes & Related Calculations
Topic: Superheating and Supercooling
Replies: 2
Views: 466

Superheating and Supercooling

What are the practical applications of superheating and supercooling?
by Audrey Kang 2I
Sun Dec 06, 2015 1:04 pm
Forum: Empirical & Molecular Formulas
Topic: VIDEO Fall 2015 Final
Replies: 2
Views: 446

Re: VIDEO Fall 2015 Final

Unfortunately I am unable to post part A because the video clip is too large of a file.
by Audrey Kang 2I
Sun Nov 29, 2015 8:26 pm
Forum: Empirical & Molecular Formulas
Topic: VIDEO Fall 2015 Final
Replies: 2
Views: 446

VIDEO Fall 2015 Final

Solution for parts B and C of Question 1 from the Fall 2015 Final in the Course Reader.

PART A COULD NOT BE POSTED SINCE IT EXCEEDED THE FILE SIZE MAXIMUM.
by Audrey Kang 2I
Fri Nov 20, 2015 3:06 pm
Forum: Ideal Gases
Topic: gas constant R
Replies: 3
Views: 596

gas constant R

Does it matter which gas constant we use if units are not specified for pressure?
by Audrey Kang 2I
Fri Nov 13, 2015 12:12 pm
Forum: Naming
Topic: coordination numbers
Replies: 1
Views: 233

coordination numbers

What are coordination numbers in relation to bonds?
by Audrey Kang 2I
Fri Nov 06, 2015 2:33 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Compounds
Replies: 2
Views: 384

Coordination Compounds

With coordination compounds, how do the bonds exactly work? Are they normally covalent or ionic in nature? Or...?
by Audrey Kang 2I
Fri Oct 30, 2015 12:28 pm
Forum: Hybridization
Topic: hybridization
Replies: 2
Views: 441

hybridization

Just for clarification, are all molecules hybridized? Should we regard hybridization as a revision to the way we view bonds? Or are only certain atoms hybridized due to the presence of an empty orbitals?
by Audrey Kang 2I
Fri Oct 16, 2015 12:05 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg formula vs. Bohr Equation
Replies: 1
Views: 786

Rydberg formula vs. Bohr Equation

If I remember correctly, professor Lavelle said he wants us to use the Bohr equation for hydrogen atoms and not the Rydberg formula? Why is this? I think I've always used the Rydberg formula and gotten the same answers.
by Audrey Kang 2I
Fri Oct 09, 2015 10:28 am
Forum: Quantum Numbers and The H-Atom
Topic: Degeneracy
Replies: 1
Views: 1127

Degeneracy

All orbitals in Hydrogen atoms and single-electron ions are degenerate despite the orbital angular momentum quantum number, l? And orbitals in multi-electron atoms are degenerate only if the orbitals are in the same subshell with the same orbital angular momentum quantum number, l?
by Audrey Kang 2I
Fri Oct 02, 2015 10:26 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Solving for Uncertainty
Replies: 1
Views: 422

Solving for Uncertainty

In problems involving the Heisenberg Uncertainty Equation, the question usually asks for the minimum uncertainty in speed or position but the solution is just given as the value of the speed or position. Is this because in the original equation, you are solving for [delta]p (change in position) or [...

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