## Search found 12 matches

Thu Mar 03, 2016 12:26 pm
Forum: *Nucleophiles
Topic: Distinguishing Nucleophiles
Replies: 1
Views: 238

### Distinguishing Nucleophiles

Hey, I was just wondering why on Ch. 4 review problem 1 they distinguished F as an electrophile yet in the reading they said F was a nucleophile. Is it now an electrophile because it wants to have the octet or did the book make an error ?
Fri Feb 26, 2016 12:12 pm
Forum: *Electrophiles
Topic: Nucleophiles
Replies: 5
Views: 397

### Nucleophiles

When determining the strength of nucleophiles, does it depend on polarization or is there some other way of determing which nucleophile is stronger?
Fri Feb 19, 2016 12:03 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: intermediate species
Replies: 1
Views: 319

### intermediate species

Hey i was just curious as to when we would know whether an intermediate species needed to be added or not and how to determine which species gets added.
Thu Feb 04, 2016 10:14 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: cell diagram
Replies: 1
Views: 183

### cell diagram

Hey I'm having trouble figuring out how to write a cell diagram How do you determine which one goes on the left and which one goes on the right? Also, do we include the salt bridge elements?
Sat Jan 23, 2016 4:11 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: work
Replies: 1
Views: 190

### work

When do you use w=-p delta v as compared to just w=p delta v. Does the negative have to do with reversible and irreversible reactions or is it compression and expansion?
Sat Jan 23, 2016 4:08 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Calculations
Replies: 1
Views: 187

### Calculations

Hey, while I'm going through the problems, I find it hard to keep track of when to use each equation. Does anyone have and tips on how to keep track of what equations you use under specific conditions?
Sun Jan 10, 2016 2:44 am
Forum: Phase Changes & Related Calculations
Topic: Internal Energy
Replies: 1
Views: 179

### Internal Energy

How can you tell whether to subtract or add in order to get the change in internal energy? In question 5 you added them but in question 7 you subtracted.
Sun Nov 15, 2015 4:20 pm
Forum: Naming
Topic: Naming Formulas
Replies: 1
Views: 153

### Naming Formulas

If we have lets say tetraamminediaquacobalt(III) bromide, and we are putting together the formula, does it matter if we put the ammine after the aqua or are there specific rules for the order? also can we put the aqua in the (OH2) form or does it need to be (H2O)?
Fri Oct 23, 2015 10:39 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Cis and Trans Dichloroethene
Replies: 3
Views: 218

### Re: Cis and Trans Dichloroethene

For the chlorine, how in the cis they do not cancel but in the trans they cancel, does that just determine whether it is polar or nonpolar or does it also relate to the charges and repulsion?
Thu Oct 15, 2015 11:17 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenberg v. Schrodinger
Replies: 1
Views: 261

### Heisenberg v. Schrodinger

I know that Heisenberg's equation deals with the uncertainty of the location of the electron with its mmovements and how Schrodinger's equation squares the wavefunction to find the probability of finding the electron but what is the difference between them and when do we know when to use each one?
Mon Oct 12, 2015 2:58 pm
Forum: Administrative Questions and Class Announcements
Topic: Material provided in all Chem 14A/14B quizzes and exams
Replies: 10
Views: 19618

### Re: Material provided in all Chem 14A/14B quizzes and exams

Do we need a scantron?
Wed Oct 07, 2015 1:35 am
Forum: Properties of Electrons
Topic: Multi electron atoms
Replies: 1
Views: 245

### Multi electron atoms

With the multi-electron atoms, it gives (q1 x q2/r) to get the potential energy without shielding, but does shielding happen between s, p,d, and f or is the energy different between different s,p,d,and f levels as well. For example, if there was 2p and 3p would we use that equation or would it just ...