CHEMISTRY COMMUNITY

Alexandria_Leaf_2F

How do you know that those specific isomers that they show in the solution are all the specific isomers? Like is there a tick to doing this when it asks to draw all the isomers?

Alexandria_Leaf_2F

Dear Dr. Lavelle,

Thank you for providing an extensive amount of resources to us throughout Chemistry 14A and 14B. I know that you truly want us to learn and out the effort in creating an environment in which we have the tools to fully grasp what we are learning.

All the best
Alexy

Alexandria_Leaf_2F

Introduction to Organic Chemistry page 153:
Can electrophilic addition reactions have more than two steps/two energy barriers?

Alexandria_Leaf_2F

Thank you!

Alexandria_Leaf_2F

I don't really understand page 146 in the Introduction to Organic Chemistry textbook. Specifically, what is a Grignard reaction? the wording on this page just confused me and I was wondering is someone could simplify it for me?

Alexandria_Leaf_2F

Did you hear about the chemist who was reading a book about Helium? He just couldn't put it down!

Alexandria_Leaf_2F

Does the quiz only cover up to page 73 in the course reader?

Alexandria_Leaf_2F

Yes it does, Thank You!

Alexandria_Leaf_2F

On page 621 of the textbook, there is an example of

2O3(g) ----> 3O2(g)

and then it says that the rate law for this reaction is

Rate= k([O3]^2/[O2]

can someone explain how that is the rate law?

Thank you!

Alexandria_Leaf_2F

In a sports relay race, a chemical kinetics specialist runs slowly, and his group loses the race.

When the chemical kinetics specialist is asked why he ran slowly, his reply was “I always wanted to be the significant rate determining step”

Alexandria_Leaf_2F

The reaction in 14.13 was as follows: Ce^4+(aq) + I^- (aq) ---> I2 (s) + Ce^3+(aq) I understand that in the final cell Diagram, there needs to be Pt(s) by the cerium because both the oxidized and reduced species are in the same solution (aq). But, in the solutions manual, there was a Pt(s) by the Io...

Alexandria_Leaf_2F

in 9.59b, the dissolution of CaF2 I'm water is: CaF2(s)---->CaF2(aq) technically this is increasing the disorder of the system and should have a positive entropy (positive delta S), but the solutions manual shows it to have a negative entropy. Why is that?

Alexandria_Leaf_2F

The video links that Lavelle sent in to review all the math don't work on mine or my friends laptops, I was wondering if they are working for anyone else?

Alexandria_Leaf_2F

A.) calculate the work that must be done against the atmosphere for the expansion of the gaseous products in the combustion of 1.00 mol C6H6(l) at 25 degrees celsius and 1.00 bar. B.) Using the data in appendix 2A, calculate the standard enthalpy of the reaction. C.) calculate the change in internal...

Alexandria_Leaf_2F

Q: What emotional disorder does a gas chomatograph suffer from?
A: Separation anxiety.

Alexandria_Leaf_2F

Yes, it is amphoteric. Here is an example:

HSO4- + HCl <--> H2SO4 + Cl- (HSO4- here acts as a base; it accepts a proton)

HSO4- + OH- <--> SO42- + H2O (HSO4- here acts an acid; it donates a proton)

Alexandria_Leaf_2F

Alexandria_Leaf_2F

Alexandria_Leaf_2F

A mixture of 2.5 moles H2O and 100 g of C are placed in a 50 L container and allowed to come to equilibrium subject to the following reaction: C(s) + H2O (g) ⇌ CO (g) + H2 (g) The equilibrium concentration of hydrogen is found to be [H2] = 0.040 M. What is the equilibrium concentration of water, [H2...

Alexandria_Leaf_2F

The equilibrium constant, KP, for the reaction SO2 (g) + O2 (g) ⇌ SO3 (g) at 700 K is 3 x 104. A mixture of SO2, O2, and SO3, each at 65 bars was introduced into a container at 700 K. Is the reaction at equilibrium? If not, does SO3 tend to form or decompose?

Alexandria_Leaf_2F

Yes! You can enroll in both. The only problem is that there aren't a lot of spots open for chem 14B next quarter so not everyone will be able to get in.

Alexandria_Leaf_2F

: images.jpeg (7.29 KiB) Viewed 28730 times

Alexandria_Leaf_2F

Are those dotted lines necessary to draw between the atomic orbitals and the molecular orbitals? Or can we leave them out?

Alexandria_Leaf_2F

What do you call a tooth in a glass of water? A one molar solution. What is the name of agent 007's Eskimo cousin? Polar Bond. Q: Why do chemists call helium, curium and barium the medical elements? A: Because if you can't helium or curium, you barium! What did the chemist say when he found two isot...

Alexandria_Leaf_2F

With ClO, there is an odd number of electrons so Cl is going to have a radical on it. Radicals make the compound more reactive.

Alexandria_Leaf_2F

No, there isn't any electronegativity values on the periodic table that we are provided with.

Alexandria_Leaf_2F

Using P is the same thing as using Px, Py, and Pz. It just helps to use Px, Py, and Pz so that you can fully see how the electrons fill the orbitals. Doing it this way makes it easier to see the lone pairs of electrons.

Alexandria_Leaf_2F

The hydrogen atom has a radius of approximately 0.05 nm. Assume that we know the position of an electron to an accuracy of 1 % of the hydrogen radius, calculate the uncertainty in the speed of the electron using the Heisenberg uncertainty principle. I am not really sure where to begin with this ques...

Alexandria_Leaf_2F

A college student recently had a busy day. Each of the student;s activities on that day (reading, getting a dental x-ray, making popcorn in a microwave oven, and acquiring a suntan) involved radiation from a different part of the electromagnetic spectrum. Complete the following table and match each ...

Alexandria_Leaf_2F

What do Batman and sodium have in common? Na-Na-Na-Na-Na-Na-Na-Na What did the Angry electron say when it was compelled? Let me atom! (Here's some chemistry pick up lines as well): Are you made of copper and tellurium? because you're CuTe! You're like an exothermic reaction, you spread your hotness ...

CHEMISTRY COMMUNITY

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1.23 in Introduction to Organic Chemistry Course reader

Re: Saying Thank You to Dr. Lavelle

4.3 page 153

Re: 4.1

4.1

Re: Post All Chemistry Jokes Here

Quiz

Re: Rate Laws and Reaction order [ENDORSED]

Rate Laws and Reaction order [ENDORSED]

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14.13

9.59 Textbook

Videos

8.93 Textbook [ENDORSED]

Re: Post All Chemistry Jokes Here

Re: HSO4-

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Chemical Equilibrium Part 3 Module

Chemical Equilibrium Part 3 Module

Re: Chem 14B enrollment

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Re: Which Diagram to draw in a bond with both elements Z<8 and Z>8 [ENDORSED]

Chem Jokes!!

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Heisenberg post module assessment #2

Textbook Chapter 1, Question 9

Re: Chemistry Jokes