## Search found 13 matches

Sun Dec 10, 2017 12:45 am
Forum: Administrative Questions and Class Announcements
Topic: LaKretz Building [ENDORSED]
Replies: 2
Views: 207

### Re: LaKretz Building[ENDORSED]

Hi, do you guys know where the final is going to take place?
Sun Dec 10, 2017 12:38 am
Forum: Administrative Questions and Class Announcements
Topic: Final
Replies: 3
Views: 252

### Final

Where will the final take place?
Sat Dec 09, 2017 10:46 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Test 4, #3
Replies: 1
Views: 206

### Test 4, #3

Can someone guide me through this problem?
Fri Nov 17, 2017 9:32 pm
Forum: Hybridization
Topic: dsp3
Replies: 1
Views: 98

### dsp3

Can someone explain what the d orbital in PCl5's hybridization look like? I mean I know that p's axis can lie in x, y, and z and I know what those look like but I'm trying to figure out the d orbital. In what orientation would that look like?
Fri Nov 17, 2017 9:14 pm
Forum: Dipole Moments
Topic: How do Dipole moments determine polarity?
Replies: 4
Views: 212

### Re: How do Dipole moments determine polarity?

Also, if the dipole moments do not cancel by means of symmetry and all the dipole moments are pointing in the direction of a certain atom then the molecule is polar.
Fri Nov 17, 2017 9:13 pm
Forum: Dipole Moments
Topic: How do Dipole moments determine polarity?
Replies: 4
Views: 212

### Re: How do Dipole moments determine polarity?

You first look at the atoms to see which are more electronegative (trend). Fluorine is one of the most electronegative elements on the periodic table so any bonds that form with F would ultimately be drawn to Fluorine. The Dipole moment would point towards fluorine.
Fri Nov 17, 2017 9:09 pm
Forum: Hybridization
Topic: Significance of Hybridization
Replies: 3
Views: 156

### Re: Significance of Hybridization

Hybridization also helps prove how many bonds certain elements can form. For example, Carbon is in group 4 thus has 4 valence electrons that can form 4 bonds. But the electron configuration of carbon would say otherwise because there would be only 2 unpaired electrons. Hybridization promotes the ele...
Fri Nov 17, 2017 9:00 pm
Forum: Hybridization
Topic: Difference between sigma and pi bonds?
Replies: 6
Views: 259

### Re: Difference between sigma and pi bonds?

A sigma bond can also be associated with a single bond whereas a pi bond can be a double bound.
Fri Nov 17, 2017 8:57 pm
Forum: Hybridization
Topic: 4.45
Replies: 2
Views: 144

### Re: 4.45

Well CH2O has a trigonal planar shape because it does not have any lone pairs on the central atom, making the angles 120 degrees. Also, in this molecule, there are 3 regions, or "groups," that Carbon is bonding with making the hybridization sp2 but Carbon can form 4 bonds because it has 4 ...
Tue Oct 24, 2017 12:49 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 2. 39 [ENDORSED]
Replies: 5
Views: 235

### Re: 2. 39[ENDORSED]

For part a, so is it better to have incomplete p orbitals than pair the two electrons into one? Can someone explain why that is?
Tue Oct 24, 2017 12:46 am
Forum: Quantum Numbers and The H-Atom
Topic: 2.39
Replies: 4
Views: 231

### 2.39

Why is Carbon's electron configuration (as shown in the diagram) an excited state? I thought an excited state only happens when you go from a an s orbital to a p orbital for example.
Mon Oct 23, 2017 11:53 pm
Forum: Quantum Numbers and The H-Atom
Topic: Problem 2.21
Replies: 1
Views: 112

### Problem 2.21

Can someone please explain why part a's solution only has one answer for l, (l=1), when n=6 and can have multiple answers, from 0 to 5?
Fri Oct 06, 2017 12:29 am
Forum: Limiting Reactant Calculations
Topic: Exercise M.11 [ENDORSED]
Replies: 3
Views: 247

### Exercise M.11[ENDORSED]

I know that oxygen is the excess reactant in equation 2 and will therefore be used as a possible limiting reactant in equation 2. But in order to find the limiting reactant, do we have to take what we have of each reactant and individually find the yield of reactant?