## Search found 22 matches

Tue Mar 07, 2017 11:55 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 19626

### Re: Quiz 3 Winter 2017

how would you draw out 2-butene or anything with a number in front of it ??? The 2 in 2-butene signifies that the location of the double bond is after the second carbon. So you would draw this as a normal butene, just with the double bond after the 2nd carbon. In other cases, you would draw either ...
Thu Mar 02, 2017 10:13 pm
Forum: *Enzyme Kinetics
Topic: Enzyme Kinetics Fomula
Replies: 1
Views: 402

### Re: Enzyme Kinetics Fomula

I don't think so. He didn't go over it in a whole bunch of detail so I wouldn't think so.
Tue Feb 14, 2017 9:58 pm
Forum: Phase Changes & Related Calculations
Topic: Winter Midterm 2015 4&5 D
Replies: 2
Views: 401

### Re: Winter Midterm 2015 4&5 D

Because it says to calculate the vaporization at 298K, you have to assume that the water is heated until vaporization, and then cools back down to 298K
Tue Feb 14, 2017 9:52 pm
Forum: Calculating Work of Expansion
Topic: Work Equations
Replies: 2
Views: 478

### Re: Work Equations

As far as I can tell, its best to stick with -nRTln(v2/v1). Thats the equation Lavelle uses the most on tests and quizzes so thats probably the safest bet
Fri Feb 10, 2017 8:09 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Potential vs Standard Cell Potential
Replies: 2
Views: 419

### Re: Cell Potential vs Standard Cell Potential

To be at standard conditions the equation must also be at 25 degrees celsius. This affects how you solve for it.
Tue Jan 31, 2017 10:56 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Prep quiz 1 #3
Replies: 3
Views: 445

### Re: Prep quiz 1 #3

I believe you have to do both and then add them because it it a state function.
Tue Jan 24, 2017 9:03 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calculating work
Replies: 2
Views: 355

### Re: Calculating work

That's part of the proof to getting the equation for an reversible, isothermal expansion on page 31 in the course reader. Its much more helpful to use the final equation though, at least in my opinion.
Wed Jan 18, 2017 10:27 pm
Forum: Student Social/Study Group
Topic: Discussion Section 1I
Replies: 1
Views: 391

### Re: Discussion Section 1I

I am in enrolled in section 1F and I really need to switch out as well! Email me : la6princess@gmail.com
Mon Nov 28, 2016 12:08 am
Forum: Lewis Acids & Bases
Topic: How to determine which is an acid and which is a base?
Replies: 5
Views: 783

### Re: How to determine which is an acid and which is a base?

It's really really helpful if you memorize the list in the course reader. Other than that if you think about which one of the two reactants will be more likely to give up a Hydrogen, that is acid. It takes a little bit of thinking ahead for me, but once you consider that it is easier.
Sun Nov 13, 2016 10:01 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Do we include (aq) in equilibrium equation?
Replies: 3
Views: 498

### Re: Do we include (aq) in equilibrium equation?

Yes you include aqueous. Not technically a liquid.
Sun Nov 13, 2016 10:00 pm
Forum: Naming
Topic: Quiz 3 prep
Replies: 3
Views: 409

### Re: Quiz 3 prep

Well amine starts with an A so it comes before the chloride alphabetically. The metal always comes last so thats why the chloride comes before nickel.
Tue Nov 01, 2016 5:34 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Midterm
Replies: 6
Views: 704

### Re: Midterm

I'm pretty sure it is yes to both
Mon Oct 31, 2016 9:19 pm
Forum: Lewis Structures
Topic: Line structures
Replies: 1
Views: 313

### Re: Line structures

I don't think so. Line structures are more of an organic chemistry thing and thats in 14B. I think you should probably be able to figure out the information that they give you but I don't think you need to build any.
Mon Oct 24, 2016 9:16 pm
Forum: Ionic & Covalent Bonds
Topic: Chapter 3 Homework #13
Replies: 2
Views: 773

### Re: Chapter 3 Homework #13

Its asking you to determine what orbital the highest energy valence electron is in. For example, to make Zn an ion, you would need to remove an electron from its 3d orbital to give it a +1 charge.
Mon Oct 24, 2016 9:13 pm
Forum: Electronegativity
Topic: Electron affinity vs Electronegativity vs. Ionization energy [ENDORSED]
Replies: 2
Views: 1053

### Re: Electron affinity vs Electronegativity vs. Ionization energy[ENDORSED]

They all have the same trend on the periodic table, increasing across the up the group and across a period, but they all represent different things. Ionization energy is the energy needed to remove an electron from an atom which makes the trend across the periodic table much easier to understand. El...
Sat Oct 22, 2016 8:29 pm
Forum: Sigma & Pi Bonds
Topic: Hybridization
Replies: 3
Views: 453

### Re: Hybridization

We haven't covered hybridization yet in class so I think it is very unlikely that it will be on the quiz next week. Kahn academy has some helpful videos on this topic though if you do want help learning this concept. [url][/url]https://www.khanacademy.org/science/organic-chemistry/gen-chem-review/hy...
Thu Oct 13, 2016 7:32 pm
Forum: Properties of Light
Topic: Practice Quiz 1 Question [ENDORSED]
Replies: 5
Views: 937

### Re: Practice Quiz 1 Question[ENDORSED]

Actually if you want the units to match up you should put it in meters. A joule (the unit for energy) is comprised of (kg x m^2 / s^2) so if you want the units to better match up you should convert nanometers to meters. Just be sure to convert it back to nanometers if it asks you f this answer is in...
Thu Oct 13, 2016 7:28 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Audio Visual Focus Topics, Assessments, and Surveys for Ch. 2
Replies: 1
Views: 245

### Re: Audio Visual Focus Topics, Assessments, and Surveys for Ch. 2

There aren't any visuals like there were for the review topics, but all of his lectures are bruincasted so if you go on his class page you can rewatch everything he did in lecture.
Tue Oct 11, 2016 8:16 pm
Forum: Limiting Reactant Calculations
Topic: __ Al(s) + __ HCl(aq) --> __ AlCl3(aq) + __H2(g)
Replies: 3
Views: 8039

### Re: __ Al(s) + __ HCl(aq) --> __ AlCl3(aq) + __H2(g)

Make sure you base your calculations on how many moles of an element in the molecule because that can really change your answer. For example if the molecule is AlCl3, make sure to calculate its molecular mass using 3 Cl atoms.
Tue Oct 11, 2016 8:13 pm
Forum: SI Units, Unit Conversions
Topic: kJ vs. J
Replies: 4
Views: 694

### Re: kJ vs. J

If you are asking this in regards to quiz 1, the question specifies that the energies should be left in J so I'm assuming that it will specify if it want the answer in KJ. I have no idea if this will carry over to the midterm though so its best to pay attention to the practice questions we do in cla...
Tue Oct 04, 2016 11:16 pm
Forum: Properties of Light
Topic: Speed of light [ENDORSED]
Replies: 3
Views: 592

### Re: Speed of light[ENDORSED]

The speed of light slows down through materials such as gas, water and glass because of both its wave and particle principles.
Tue Sep 27, 2016 8:21 pm
Forum: Significant Figures
Topic: Sig Figs Throughout Problems
Replies: 12
Views: 4231

### Re: Sig Figs Throughout Problems

My TA told us today that it is best if you use the entire number through the problem and wait to round sig figs until the very end. This gives yo the most accurate answer. So as long as you remember to round and add units at the end of the problem, you should be good.