Search found 20 matches
- Wed Mar 15, 2017 1:17 pm
- Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
- Topic: Substituents on Cyclohexane
- Replies: 1
- Views: 296
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?
- Mon Mar 06, 2017 1:31 pm
- Forum: *Carboxylic Acids
- Topic: Carboxylic Acids
- Replies: 1
- Views: 546
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?
- Wed Mar 01, 2017 12:59 pm
- Forum: *Electrophiles
- Topic: Collision
- Replies: 1
- Views: 290
Collision
Does the collision for nucleophiles and electrophiles only happen at pi bonds?
- Sat Feb 18, 2017 7:48 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 2 Winter 2017
- Replies: 160
- Views: 17878
Re: Quiz 2 Winter 2017
How is question one done from quiz 2?
- Wed Feb 08, 2017 1:30 pm
- Forum: General Rate Laws
- Topic: Reaction order
- Replies: 3
- Views: 641
Reaction order
Is it possible for a reaction to have an order greater than 2?
- Wed Feb 01, 2017 1:35 pm
- Forum: Balancing Redox Reactions
- Topic: Cell diagram
- Replies: 3
- Views: 653
Cell diagram
The double bars indicate a salt bride. What indicates a porous disk in a cell diagram?
- Tue Jan 31, 2017 10:56 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 1 Preparation Answers
- Replies: 130
- Views: 17969
Re: Quiz 1 Preparation Answers
Will we need a calculator for this test?
- Mon Jan 30, 2017 3:43 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Standard Potential E
- Replies: 1
- Views: 202
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?
- Fri Jan 20, 2017 4:29 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Positional Entropy or Thermal Entropy?
- Replies: 1
- Views: 538
Positional Entropy or Thermal Entropy?
In class, Friday 1/20/17, we covered that
, is this formula used to find positional or thermal entropy?
- Thu Jan 12, 2017 9:55 am
- Forum: Phase Changes & Related Calculations
- Topic: Bond Enthalpy and Enthalpy of Formation
- Replies: 4
- Views: 535
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?
- 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: 1196
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.
- Wed Nov 16, 2016 12:52 am
- Forum: Naming
- Topic: Convention for naming
- Replies: 2
- Views: 353
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...
- Wed Nov 16, 2016 12:46 am
- Forum: Naming
- Topic: Quiz 3 preparation - Fall 2015
- Replies: 2
- Views: 436
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...
- Tue Nov 15, 2016 9:15 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Using MO Model
- Replies: 1
- Views: 302
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)?
- Tue Nov 01, 2016 4:51 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Midterm
- Replies: 6
- Views: 776
Re: Midterm
Will we be responsible for knowing the bond angles for VESPR models?
- Wed Oct 26, 2016 2:37 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic Characters
- Replies: 5
- Views: 1244
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...
- Fri Oct 21, 2016 3:40 pm
- Forum: Photoelectric Effect
- Topic: Quiz 1 Question 5
- Replies: 1
- Views: 293
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.
- Mon Oct 10, 2016 9:41 pm
- Forum: Properties of Electrons
- Topic: Energy Levels of Electrons
- Replies: 1
- Views: 492
Energy Levels of Electrons
How come the energy state is higher at 3d10 than 4s when Z(atomic number) < 20?
- Thu Oct 06, 2016 2:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Question about the Workbook
- Replies: 2
- Views: 375
Question about the Workbook
Is it possible to get the workbook without having to buy a course reader?
- Thu Sep 29, 2016 12:03 am
- Forum: Significant Figures
- Topic: Constants and Significant Figures
- Replies: 3
- Views: 1380
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...