Search found 20 matches

by Brian Huynh 3D
Wed Mar 15, 2017 1:17 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Substituents on Cyclohexane
Replies: 1
Views: 272

Substituents on Cyclohexane

When you have a substituent on cyclohexane, is it typically located at the top/ bottom of the chair? What happens if you have multiple-2 or 3 substituents?
by Brian Huynh 3D
Mon Mar 06, 2017 1:31 pm
Forum: *Carboxylic Acids
Topic: Carboxylic Acids
Replies: 1
Views: 521

Carboxylic Acids

Can carboxylic acids have the carboxl group at either ends or does it have to exist on the most right end of the structure?
by Brian Huynh 3D
Wed Mar 01, 2017 12:59 pm
Forum: *Electrophiles
Topic: Collision
Replies: 1
Views: 275

Collision

Does the collision for nucleophiles and electrophiles only happen at pi bonds?
by Brian Huynh 3D
Sat Feb 18, 2017 7:48 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 17029

Re: Quiz 2 Winter 2017

How is question one done from quiz 2?
by Brian Huynh 3D
Wed Feb 08, 2017 1:30 pm
Forum: General Rate Laws
Topic: Reaction order
Replies: 3
Views: 608

Reaction order

Is it possible for a reaction to have an order greater than 2?
by Brian Huynh 3D
Wed Feb 01, 2017 1:35 pm
Forum: Balancing Redox Reactions
Topic: Cell diagram
Replies: 3
Views: 593

Cell diagram

The double bars indicate a salt bride. What indicates a porous disk in a cell diagram?
by Brian Huynh 3D
Tue Jan 31, 2017 10:56 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 17137

Re: Quiz 1 Preparation Answers

Will we need a calculator for this test?
by Brian Huynh 3D
Mon Jan 30, 2017 3:43 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Standard Potential E
Replies: 1
Views: 183

Standard Potential E

For the table of values for Standard Potential E, are they all reduction values and can they be used for any reaction that doesn't involve hydrogen?
by Brian Huynh 3D
Fri Jan 20, 2017 4:29 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Positional Entropy or Thermal Entropy?
Replies: 1
Views: 492

Positional Entropy or Thermal Entropy?

In class, Friday 1/20/17, we covered that , is this formula used to find positional or thermal entropy?
by Brian Huynh 3D
Thu Jan 12, 2017 9:55 am
Forum: Phase Changes & Related Calculations
Topic: Bond Enthalpy and Enthalpy of Formation
Replies: 4
Views: 498

Bond Enthalpy and Enthalpy of Formation

Professor Lavelle covered in class that the Enthalpy of formation of O2 is 0. Are there any other exceptions like this?
by Brian Huynh 3D
Mon Nov 28, 2016 9:51 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Homework Help 12.65
Replies: 4
Views: 996

Re: Homework Help 12.65

Typically, when doing these problems, you want to look at the molecular formula and see if it is a base or an acid when in water. NH4Br will dissociate into NH3 and H+ ion(or hydronium), thus NH4 is an acid because it donated an electron and the solution is acidic due to the increase of H+ ion.
by Brian Huynh 3D
Wed Nov 16, 2016 12:52 am
Forum: Naming
Topic: Convention for naming
Replies: 2
Views: 316

Convention for naming

Is there a convention when writing down the molecular formula from a name? I've seen several examples that show different trends to naming a structure. For example, in pentaaminechloronickel(II) chloride, the amine comes before the Cl,Ni(NH 3 ) 5 Cl) Cl 2 but in pentaaminebromocobalt, the amine come...
by Brian Huynh 3D
Wed Nov 16, 2016 12:46 am
Forum: Naming
Topic: Quiz 3 preparation - Fall 2015
Replies: 2
Views: 401

Re: Quiz 3 preparation - Fall 2015

The equation states that there is only one bromide- bromo, so you can only assume that there is one negative charge. Then, you look at the charge of cobalt and subtract the charge to get the positive 2 charge of the ion. If it stated pentaaminetribromocobalt(III), then the structure would be neutral...
by Brian Huynh 3D
Tue Nov 15, 2016 9:15 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Using MO Model
Replies: 1
Views: 274

Using MO Model

When drawing MO diagrams, does the Z>8 and Z<8, count the number of total atoms in a molecule(CO= 11) or just a the highest atom in the molecule ( O = 6)?
by Brian Huynh 3D
Tue Nov 01, 2016 4:51 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Midterm
Replies: 6
Views: 704

Re: Midterm

Will we be responsible for knowing the bond angles for VESPR models?
by Brian Huynh 3D
Wed Oct 26, 2016 2:37 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Characters
Replies: 5
Views: 995

Re: Ionic Characters

One factor that can help determine iconic character is the difference in electronegativity between two atoms. The greater the difference in electronegativity, the greater the charge difference and greater ionic character of the covalent bond. Typically a electronegative charge difference of > 2 indi...
by Brian Huynh 3D
Fri Oct 21, 2016 3:40 pm
Forum: Photoelectric Effect
Topic: Quiz 1 Question 5
Replies: 1
Views: 276

Quiz 1 Question 5

What does it mean when energy dissipates? Is that the energy left over or the threshold energy? And how does one get the final answer when trying to determine energy emitted given that a molecule emits 675 nm light and dissapates an X amount of energy per photon.
by Brian Huynh 3D
Mon Oct 10, 2016 9:41 pm
Forum: Properties of Electrons
Topic: Energy Levels of Electrons
Replies: 1
Views: 452

Energy Levels of Electrons

How come the energy state is higher at 3d10 than 4s when Z(atomic number) < 20?
by Brian Huynh 3D
Thu Oct 06, 2016 2:36 pm
Forum: Administrative Questions and Class Announcements
Topic: Question about the Workbook
Replies: 2
Views: 343

Question about the Workbook

Is it possible to get the workbook without having to buy a course reader?
by Brian Huynh 3D
Thu Sep 29, 2016 12:03 am
Forum: Significant Figures
Topic: Constants and Significant Figures
Replies: 3
Views: 1244

Re: Constants and Significant Figures

Technically, Planck's Constant has 6 significant figures ( 6.62608 x 10^-34), but it depends on the experimental data you have. Typically, most workbook problems don't have that long of significant figures, so they are usually limited by the other numbers like frequency or wavelength. Numbers with l...

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