CHEMISTRY COMMUNITY

Huongly Do 3D

This question asks for us to write out the cell diagram for the redox reaction, but why does the answer include AGBr(s) instead of Ag+(aq)? Isn't it supposed to be the dissociated ion and not the entire solid product? Thank you!

Huongly Do 3D

Ok, knowing that the given information is K=326 and k(attach)=7.4x10^7 L/mol*s, you can use the equation: K = k(forward)/k(reverse) or K = k(attach)/k(loss). The rate constant of the loss of unreacted substrate will be equal to k(loss) = k(attach/K = (7.4x10^7 L/mol*s)/326 = 2.3x10^5 L/mol*s. Hope t...

Huongly Do 3D

Hi! I'm totally interested in switching with you! Email me at huonglydo@gmail.com and we can settle all the details if you're still interested!

Huongly Do 3D

Organic chemistry is so difficult.........

People who study it have alkanes of trouble!

Huongly Do 3D

a) Since, the units for the initial reaction rate is mol*L-1*s-1, we have to take the given values for H2 and I2 and convert them. Plugged into the reaction rate formula of rate= k*[H2]*[I2], you will get rate = (0.063 \frac{L}{mol*s})(\frac{0.52g H2}{0.750 L})(\frac{1 mol H2}{2....

Huongly Do 3D

For part a of this problem, I used the enthalpy formula, $\Delta H\doteq \sum \Delta H(products)-\sum \Delta H(reactants)$ , and the same formula to calculate the entropy, but my free energy final calculation is still off. Is there a step that I am missing in the problem?

Huongly Do 3D

What do you call a tooth in a glass of water?

A one molar solution.

Huongly Do 3D

Most, if not all, of the equations we need for thermochemistry can be found on the back of the laminated sheet that came with the purchase of the course readers!

Huongly Do 3D

If I remember correctly, if you took Chem 14A with Lavelle, or know someone who has the old course reader on them, there should be one/two pages in the front of the course reader that specifically highlights what he expects from us for sig.figs. Additionally, I think the maximum points that can get ...

Huongly Do 3D

Because the variable that you are plugging in the 7.32 C is for the CHANGE in temperature, it doesn't matter if you convert from degrees Celsius to degrees Kelvin, the reaction is still raised by 7.32 degrees, regardless of the type of the scale of temperature behind it. The solutions manual just ch...

Huongly Do 3D

Since you know that Ka is [HCO3-][H3O+]/[H2CO3], plug in your known values of Ka and [H3O+], and get all the numerical values on one side. What you have left on the other side is [HCO3-]/[H2CO3], the ratio of bicarbonate to carbonic acid. Solve and you have the answer!

Huongly Do 3D

I assume so because the ICE box is a concept that is heavily incorporated into the course reader and the practice problems we see in the workbook quizzes.

Huongly Do 3D

The problem asks us to see when the rate of decomposition of the X2 molecules has reached equilibrium. In Flask 1 and 2, the X2 molecules continue to dissociate into X molecules. In Flask 3, about half of the X2 molecules have dissociated. Since the number of X2 molecules and X molecules don't chang...

Huongly Do 3D

Because Joules is the standard unit for the photoelectric experiment, you need to convert the work function (threshold energy) from kJ/mol to just J. Since Avogadro's constant's units are 1/mol, dividing kJ/mol by 1/mol will cancel out the mol unit, leaving you with just kJ to convert to J to get th...

Huongly Do 3D

What do you call a bear with a dipole moment?

A polar bear!

Huongly Do 3D

I think that we don't say s^2 because it only has one orbital available to hybridize, while p has three orbitals (px, py, and pz) available to hybridize.

Huongly Do 3D

I think that because the geometry of molecules is not going to be on the test, you just have to use your formal charge calculations for each atom to find the most stable combination of bonds. The correct Lewis structure should be the one that has the most stability in its bonds.

Huongly Do 3D

leezashashkova wrote:Does anyone know if we'll get our first quizzes back before the next quiz?

I think we get them back during our next discussion session, along with our graded workbooks as well :)

Huongly Do 3D

I'm pretty sure the deadline is midnight from Sunday night to Monday morning because the "week" technically starts with the class on Monday.

Huongly Do 3D

Hi everyone! I know I'm super late, but I'm living on Dykstra 4 and would love to join the study group (I need all the help I can get, to be honest haha). My email is huonglydo@gmail.com Thanks!

CHEMISTRY COMMUNITY

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Winter 2016 Q3C (p.207)

Re: Chapter 15 Question 81

Re: switch 14C and BL

Re: Post All Chemistry Jokes Here

Re: Homework Help 15.13

9.59

Re: Post All Chemistry Jokes Here

Re: Formulas

Re: Significant Figure [ENDORSED]

Re: Question 8.25

Re: 2015 final Q7A

Re: When Should I use the ICE table?

Re: Textbook 11.7 (a)

Re: Midterm question #3A

Re: Post All Chemistry Jokes Here

Re: s and p hybridization

Re: Quiz 2

Re: De Neve Study Group

Re: Chemistry Community Points

Re: Dykstra Hall Study Group (Fall 2016)