CHEMISTRY COMMUNITY

Delilah Naranjo dis 3j

Where does he get the number thats in front of the name for example, 4-chloro-2-butanol??

Delilah Naranjo dis 3j

Why does oxygen always need to have two bonds and why does carbon always needs to have 4 bonds? Can someone please explain this to me.

Delilah Naranjo dis 3j

Hi does anyone know how the curve for this class works?

Delilah Naranjo dis 3j

What does it mean if the slow step rate does not match the observed rate?

Delilah Naranjo dis 3j

how does integral d[A]/[A] equal to ln[A]? does anyone know any easy way to learn integrals? Thanks

Delilah Naranjo dis 3j

on page 61 of the course reader it says that the overall rxn order = n+m=2 how did they get this number?

Delilah Naranjo dis 3j

Where do I find the homework problems for thermodynamics and organic chem? It is not the same in the chemical principles book so idk where to find the practice problems. Does anyone know where i can find them?

Delilah Naranjo dis 3j

what is an intermediate? and how can you figure out what are the intermediates in a reaction?

Delilah Naranjo dis 3j

What is the difference between activation enegery and free energy of activation? and what does it mean when more molecus have E>Ea? What does E stand for?

Delilah Naranjo dis 3j

How are thermodynamics and organic chem related? Also does kinectics control a reaction or does thermodynamics control a reaction?

Delilah Naranjo dis 3j

Hi Prof Lavelle was going over this in class but did not understand it. He was making a connection of Electrophiles and Nucleaophiles to acids and bases. Can someone please explain this to me thanks.

Delilah Naranjo dis 3j

This totally makes sense based on what we have been learning in chem.

Delilah Naranjo dis 3j

Benzene is more stable and less reactive than would be predicted fro its kekule structures. use the mean bond enthalpies in table 8.6 and 8.7 to calculate the lowering in molar energy when resonance is allowed between the kekule structures of benzene.

Delilah Naranjo dis 3j

Can someone please explain the difference between entropy vs enthalpy? I keep confusing the two. Also can you give an example of both and when to use them. Thanks.

Delilah Naranjo dis 3j

Hi what equation do we use to find heat when a gas is at constant p?

Delilah Naranjo dis 3j

calculate the reaction enthalpy for hydrogenation of ethyne to ethane. I solved the problem and got positive 312 kj.mol-1 but the answers in the solution manual gives a -312. Can someone please explain this question to me because I do not understand the explanations that are given in the solution ma...

Delilah Naranjo dis 3j

I have a question how does sublimation equal

delta H of sub= delta H of fus + delta H of vap????

Delilah Naranjo dis 3j

How do you know what bond breaks and which bond is formed?

Delilah Naranjo dis 3j

Hi does anyone know how to do question 65 from chapter 8? Its asks to calculate the standard enthalpy of formation of dinitrogen from the data given.

Delilah Naranjo dis 3j

How do I know what bonds are broken and created?

Delilah Naranjo dis 3j

How do we know when to find Partial pressure? For question 11.3 in the book it asks: Write the equilibrium expression K for each of the following reactions A. 2C2(h4)(g)+O2(g) ------> <-------- 2C2(h4)Cl2(g)=2(h2)O(g) I know that you have to get products over reactants but in the answer it has P[C2H...

Delilah Naranjo dis 3j

Depict the progress of the reaction graphically for the decomposition of PCl5 to give PCl3 and Cl2 using the values given in Example 11.8

Delilah Naranjo dis 3j

for question number 3 we have to use the De Broglie equation which is wavelength=h/p but in the detailed solutions the equation is wavelength=hp^-1 why do they have the negative 1? which one is easier to use?

Delilah Naranjo dis 3j

Can someone please explain this section. I have read the book and course reader and still do not fully understand it.

Delilah Naranjo dis 3j

why is the electron configuration for Ag not [Kr]4d^9, 5s^2? but instead is [Kr]4d^10, 5s^1?
When should we do it like this? and also if we have the electron configuration for Cl^- should we go to the noble gas before it Ne or the answer is just [Ar]???

Delilah Naranjo dis 3j

Write the complete Lewis structure for each of the following compounds: ammonium chloride; potassium phosphide; sodium hypochlorite.

Someone please help me and if you can explain step by step that would be great thanks.

Delilah Naranjo dis 3j

The velocity of an electron that is emitted from a metallic surface by a photon is 3.6 x 10^3 km s^-1. What is the wavelength of the ejected electron? No electrons are emitted from the surface of the metal until the frequency of the radiation reaches 2.50 x 10^16 Hz. How many much energy is required...

Delilah Naranjo dis 3j

What is a black body? and how does it absorb all the frequencies?

Delilah Naranjo dis 3j

Hi everyone I am glad to see that people want to make a study group that is great. Let's meet up Tomorrow October 4 7:30pm on the 7th floor west side study lounge to arrange an official meeting time and place because we have a quiz next week. If you have any questions please email me at lilahh2011@g...

Delilah Naranjo dis 3j

Hi what are these self-quizzes and where can we find them? Is there a specific date we have to turn them in?

Delilah Naranjo dis 3j

The question is from the Post-Assessment Limiting Reactant Calculations #10. How many moles of CO2(g) are produced when 500g of CaCO3(s) is used to neutralize an acid spill? the equation for the reaction at 1 atm and 25degrees C is: CaCo3(S)+H2SO4(aq)----> CaSO4(s)+CO2+H2O(l) What is 1atm and where ...

Delilah Naranjo dis 3j

My email is Lilahh2011@gmail.com. Email me so I can add you to a group chat.

Delilah Naranjo dis 3j

Yes of course that is perfectly fine. Everyone is welcomed to join (:

Delilah Naranjo dis 3j

Who is willing to join a study group for Hedrick Summit? Reply here and we can make a group chat to set up dates and times that work best for everyone. Thanks

CHEMISTRY COMMUNITY

Search found 34 matches

Naming organic molecules

Lewis Structure question

Class Curve

Pre Equilibrium

integral

overall rxn order

Chapter 4 of the book

intermediate

Activation Energy vs Free energy of activation

Organic Chem and Thermodynamics

Electrophiles and nucleophiles

Re: Post All Chemistry Jokes Here

Bond Enthalpies 8.77

Entropy vs Enthalpy

equation from heat to a gas

8.57

physical or phase change

Bond Enthalpies

8.65

Enthalpy

Chemical Equilibrium 11.3

#5 Ch11

2006 MT #3

Charge distribution in molecules

Electron Configuration

Home work question 3.39

Homework Question 1.33 [ENDORSED]

Black Body Radiation [ENDORSED]

Re: Hedrick Summit Study Group Chem 14A

Preparatory Self Quizzes [ENDORSED]

Limiting Reactant Calculations

Re: Hedrick Summit Study Group Chem 14A

Re: Hedrick Summit Study Group Chem 14A

Hedrick Summit Study Group Chem 14A