Search found 15 matches

by Hannah Ship 2H
Fri Mar 11, 2016 5:24 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: 2015 Winter Final Question 3C
Replies: 1
Views: 480

2015 Winter Final Question 3C

"The volume of the lung before inhalation is 2.5L as there is always some air inside the lung. What is the air volume after inhalation at 37.0 celsius?"

Why do we add the 2.5L to .705L (the volume after expansion)?
by Hannah Ship 2H
Tue Mar 01, 2016 5:44 pm
Forum: *Cycloalkenes
Topic: HW Question: 1.21
Replies: 2
Views: 304

Re: HW Question: 1.21

For this question, why would it not be 5-methyl-1,3 cyclopentadiene?
by Hannah Ship 2H
Sat Feb 27, 2016 4:36 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Transition States
Replies: 1
Views: 326

Re: Transition States

I believe you always draw the two transition states for electrophilic addition and electrophilic aromatic substitutions reactions.
by Hannah Ship 2H
Sun Feb 21, 2016 7:42 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Psuedo rate Laws
Replies: 1
Views: 301

Re: Psuedo rate Laws

The first appears to be a second order when one of the reactants in the rate equation is present in great excess over the other in the reaction and thus stays constant throughout the reaction. So the pseudo rate law is used,with the rate of the substance with the varying amount.
by Hannah Ship 2H
Sun Feb 14, 2016 8:11 pm
Forum: First Order Reactions
Topic: Textbook 15.23 Part A
Replies: 1
Views: 303

Re: Textbook 15.23 Part A

I believe you put the 1/2, because the question asks to you find 1/2 of the amount that remains.
by Hannah Ship 2H
Sat Feb 06, 2016 4:56 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Entropy (total) in relation to Spontaneity
Replies: 1
Views: 228

Entropy (total) in relation to Spontaneity

For the practice midterm 2013, number 6B part d, why does positive total Entropy translate to positive spontaneity?
by Hannah Ship 2H
Sun Jan 31, 2016 10:39 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Textbook Problem 11.19a
Replies: 1
Views: 247

Textbook Problem 11.19a

In this problem we are given 2H2+O2->2H20. When calculating the Gibbs free energy of the equation, why does the solution omit H2 and O2 when adding up Gibbs from products- reactants?
by Hannah Ship 2H
Sun Jan 24, 2016 11:23 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Textbook Problem 8.77
Replies: 1
Views: 217

Textbook Problem 8.77

In this problem, they use Benzene and want us to calculate bond enthalpies for the non resonance and resonance structures. My question is where do you get the resonance stabilized values?
by Hannah Ship 2H
Mon Jan 18, 2016 4:01 pm
Forum: Phase Changes & Related Calculations
Topic: Names for phase change from liquid to solid.
Replies: 2
Views: 311

Re: Names for phase change from liquid to solid.

I believe it is enthalpy of freezing
by Hannah Ship 2H
Mon Jan 18, 2016 3:54 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7853
Views: 1097365

Re: Chemistry Jokes

Q: What did one titration say to the other?
A: "Let's meet at the endpoint"
by Hannah Ship 2H
Sun Jan 10, 2016 3:41 pm
Forum: Phase Changes & Related Calculations
Topic: Figure 8.21 from book
Replies: 2
Views: 346

Re: Figure 8.21 from book

I have the same question and does this have any correlation with the intermolecular forces of the phases?
by Hannah Ship 2H
Sun Oct 25, 2015 10:28 pm
Forum: Hybridization
Topic: S Character
Replies: 1
Views: 235

S Character

How does s character relate to bond angles?
by Hannah Ship 2H
Sat Oct 17, 2015 11:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Repulsion
Replies: 1
Views: 228

Repulsion

Why is it that regions of high electron density repel one another?
by Hannah Ship 2H
Sat Oct 10, 2015 1:19 pm
Forum: *Particle in a Box
Topic: Problems: Particle in a box & Probability of Finding E-'s
Replies: 3
Views: 1044

Re: Problems: Particle in a box & Probability of Finding E-'

Conceptually, how does the wavefunction squared gives the probability of finding an electron?

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