Search found 15 matches

by sophiadyang1L
Sat Mar 12, 2016 9:03 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Ring flip?
Replies: 1
Views: 314

Ring flip?

Does it matter whether the ring flip is flipped horizontally or vertically?
by sophiadyang1L
Sat Mar 12, 2016 12:36 am
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Alkenes and alkynes?
Replies: 1
Views: 383

Alkenes and alkynes?

So I understand that if we have an alkene (double bond) structure, we must include E or Z with the name. If there is no alkene and if there is an alkyne (triple bond) structure, do we also need to include E or Z with the name?
by sophiadyang1L
Thu Mar 10, 2016 10:27 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: q
Replies: 1
Views: 319


Under what circumstances does q = delta H?
by sophiadyang1L
Tue Mar 08, 2016 12:11 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Winter 2011 Final Q1C
Replies: 1
Views: 349

Winter 2011 Final Q1C

Why is it that ethane has a higher heat capacity than ethene? I thought the more bonds in a molecule, the higher the heat capacity would be? And why does NO have a greater residual entropy at 0K than BF3?
by sophiadyang1L
Fri Mar 04, 2016 1:15 am
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Z, E vs. cis, trans
Replies: 1
Views: 338

Re: Z, E vs. cis, trans

Z is the same thing as cis and E is the same thing as trans. Cis is on the same side and trans is on the opposite side. Good luck! :)
by sophiadyang1L
Sun Feb 28, 2016 11:16 pm
Forum: Zero Order Reactions
Topic: Friday Quiz #2 Question 5
Replies: 1
Views: 392

Friday Quiz #2 Question 5

In the distant future, mankind has finally achieved interstellar travel. Imagine you are chosen to lead a group of scientists to explore an unknown planet called Jakku. While on the planet your group finds a mysterious element and agree that further analysis is required to understand the properties ...
by sophiadyang1L
Fri Feb 19, 2016 1:40 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Activation Energy Effect Clarification
Replies: 1
Views: 296

Activation Energy Effect Clarification

Hi, I just wanted some clarification. So if the reaction has a higher activation energy, this would lead to a smaller k; would this also mean there would be a longer half-life and lastly, a slower reaction?
by sophiadyang1L
Tue Feb 09, 2016 11:19 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Friday Quiz Question #4
Replies: 2
Views: 420

Re: Friday Quiz Question #4

Would anyone mind sharing the final answer to this question?
by sophiadyang1L
Fri Feb 05, 2016 3:22 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 14.11(d)
Replies: 1
Views: 316


I am confused with how to determine which elements will form whichever respective elements they do form? In this problem they give you Pt(s) | O2(g) | H+(aq) || OH-(aq) | O2(g) | Pt(s). More specifically, how do you determine which one is the oxidation reaction and which is the reduction reaction?
by sophiadyang1L
Thu Feb 04, 2016 5:42 pm
Forum: Balancing Redox Reactions
Topic: Acidic vs Basic
Replies: 4
Views: 608

Re: Acidic vs Basic

For these problems, are we always going to be given the conditions? (Whether the reaction is in an acidic or basic solution?)
by sophiadyang1L
Thu Jan 28, 2016 12:38 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Textbook 9.37
Replies: 1
Views: 417

Textbook 9.37

For part a, when we balance the equation of formation of H2O(l), why do we balance it as H2(g) + 1/2 O2(g) ---> H2O(l) versus 2 H2(g) + O2(g) ---> 2 H2O(l)?
by sophiadyang1L
Sun Jan 24, 2016 7:11 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Formula Difference
Replies: 1
Views: 231

Formula Difference

When do we use q=CdeltaT versus q=mCdeltaT?
by sophiadyang1L
Sun Jan 10, 2016 11:39 pm
Forum: Phase Changes & Related Calculations
Topic: Required and Released Energy
Replies: 3
Views: 399

Re: Required and Released Energy

I believe it has something to do with how if a bond is broken, it is always endothermic. It is always endothermic because more energy is required to break bonds than the energy needed to form bonds. (Products - reactants will come out to be positive)
by sophiadyang1L
Sun Nov 29, 2015 5:04 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Video: Molecular Orbital Theory TB Problem
Replies: 1
Views: 289

Re: Video: Molecular Orbital Theory TB Problem

I tried to upload to the website directly, but it would not load, even after several attempts.

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