Search found 21 matches
Re: #7B
Sorry I meant 7B on the 2016 final
#7B
Why does the second organic molecule have an E in it? 8 know E means that the atoms with the highest atomic number are opposite of each other but which atoms are being compared in the molecule?
1.26
I got the name correctly; however, I don't understand why there is a E. I know E means that the groups are across from each other. But what groups are identical and across from each other in that alkene?
- Sun Mar 05, 2017 9:50 pm
- Forum: *Alkanes
- Topic: Which structure?
- Replies: 2
- Views: 450
Which structure?
When it asks to "draw the structure," are we expected to draw the line structure or Lewis structure?
1.5 (c)
How can you tell that the three lines are an alkyne and that the molecular formula is C3H4? I don't physically see this
- Sun Feb 26, 2017 11:20 pm
- Forum: *Nucleophiles
- Topic: Nucleophilic strength
- Replies: 1
- Views: 479
Nucleophilic strength
Does nucleophiloc strength rely on polarizability? And if yes, does polarizability increase down a group?
- Mon Feb 20, 2017 6:51 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Book problems for quiz 2?
- Replies: 1
- Views: 449
Book problems for quiz 2?
Should we go up to question 55 in order to prepare for quiz two?
- Sun Feb 12, 2017 7:12 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Midterm 2015 #6
- Replies: 1
- Views: 386
Midterm 2015 #6
Given these following reduction half reactions:
I2(S) + 2e- -> 2I-(aq) E• = 0.54v
Cl2(g) + 2e- -> 2Cl-(aq) E• = 1.36
Calculate E•, deltaG• and k at 25•C
In order to determine the K, the solution says to use DeltaG•= -RTlnK
Why can't we use E• = RT/nF lnK? I used that and got a different answer
I2(S) + 2e- -> 2I-(aq) E• = 0.54v
Cl2(g) + 2e- -> 2Cl-(aq) E• = 1.36
Calculate E•, deltaG• and k at 25•C
In order to determine the K, the solution says to use DeltaG•= -RTlnK
Why can't we use E• = RT/nF lnK? I used that and got a different answer
- Sun Feb 05, 2017 11:52 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Galvanic cell vs electrolytic cell [ENDORSED]
- Replies: 2
- Views: 780
Galvanic cell vs electrolytic cell [ENDORSED]
What's the difference between a galvanic cell and a electrolytic cell?
- Sun Jan 29, 2017 11:46 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: 9.25
- Replies: 1
- Views: 516
9.25
If SO2F2 adopts a positionally disordered arrangement in its crystal form, what might its residual entropy be?
- Sun Jan 22, 2017 9:06 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: #75
- Replies: 1
- Views: 499
#75
Use the bond enthalpies in tables 8.6 and 8.7 to estimate the reaction enthalpy for CH3CHCH2(g) +H2O(g) --> CH3CH(OH)CH3(g). I know for the bonds broken, it's one double bond between two carbon atoms and 1 bond between O and H. However, for the bonds formed, I got one C-H bond, one C double bonded t...
- Sun Jan 15, 2017 10:21 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Extensive property vs Intensive property [ENDORSED]
- Replies: 1
- Views: 867
Extensive property vs Intensive property [ENDORSED]
Why is heat capacity an extensive property, while the specific heat capacity and molar heat capacity are intensive properties?
- Sun Dec 04, 2016 10:25 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2996694
Re: Post All Chemistry Jokes Here
If a king farts, is it a noble gas?
- Sun Nov 20, 2016 5:11 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium constant help
- Replies: 1
- Views: 530
Equilibrium constant help
Do equilibrium constants (KC) exclude liquids and solids? And if yes, is it the same as the Kp (thinking back to the most recent quiz we took)?
- Sun Nov 13, 2016 7:39 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Difference between VSEPR and MOT
- Replies: 3
- Views: 8450
Difference between VSEPR and MOT
What's the difference between VSEPR and the Molecular Orbital Theory?
- Fri Nov 04, 2016 9:35 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2996694
Re: Post All Chemistry Jokes Here
Here are some chemistry pick up lines so you are prepared just in case an attractive person sits next to you during the chemistry lecture. Do you have 11 protons? Cause you're sodium fine. Are you made of copper and tellurium? Because you're cute. You must be a compound of beryllium and barium...bec...
- Sat Oct 29, 2016 11:50 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: #17
- Replies: 1
- Views: 422
#17
Predict the bond angles at the central atom of the following molecules and ions. a) O3
- Fri Oct 21, 2016 6:30 pm
- Forum: Hybridization
- Topic: textbook problem #19e
- Replies: 1
- Views: 508
textbook problem #19e
Give the ground-state electron configuration and number of unpaired electrons expected for each of the following ions. e) Ni2+
I just want someone to explain to me again why it's [Ar] 3d8 instead of [Ar] 3d6 4s2
I just want someone to explain to me again why it's [Ar] 3d8 instead of [Ar] 3d6 4s2
- Fri Oct 14, 2016 4:33 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Chapter 1 question 45
- Replies: 2
- Views: 545
Chapter 1 question 45
A bowling ball of mass 8.00 kg is rolled down a bowling alley lane at 5.00 +/- 5.0 ms^-1. What is the minimum uncertainty in its position?
- Tue Oct 04, 2016 10:58 pm
- Forum: DeBroglie Equation
- Topic: Post Module Question [ENDORSED]
- Replies: 3
- Views: 840
Post Module Question [ENDORSED]
If an electron (mass 9.11 x 10-31 kg) has an associated wavelength of 7.28 x 10-9 m, what is its speed? Is your answer reasonable, why?
I continue getting the answer 1.00x10^4 and don't understand what I did wrong. Also, how would I know if the answer is reasonable compared to the speed of light.
I continue getting the answer 1.00x10^4 and don't understand what I did wrong. Also, how would I know if the answer is reasonable compared to the speed of light.
- Wed Sep 28, 2016 11:18 am
- Forum: Significant Figures
- Topic: Significant figures for Logarithms
- Replies: 1
- Views: 609
Significant figures for Logarithms
Can someone please explain the rules of significant figures for logarithms?