Search found 29 matches

by EmilyLeibovitch2E
Sat Mar 18, 2017 9:44 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: How to tell if you're dealing with an ideal gas?
Replies: 3
Views: 517

Re: How to tell if you're dealing with an ideal gas?

I think in 14B we have only really used ideal gasses in problems, so it's safe to assume it is an ideal gas, even if it only says gas.
by EmilyLeibovitch2E
Sat Mar 18, 2017 12:11 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Equilibrium Values
Replies: 2
Views: 308

Re: Equilibrium Values

To further answer your question, when delta G is positive it is not spontaneous, when it is negative it is spontaneous.When Delta S total is positive the process is spontaneous, and when it is negative it is not spontaneous.
by EmilyLeibovitch2E
Thu Mar 16, 2017 11:17 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7022
Views: 771740

Re: Post All Chemistry Jokes Here

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by EmilyLeibovitch2E
Mon Mar 13, 2017 12:23 am
Forum: *Alkanes
Topic: Naming [ENDORSED]
Replies: 92
Views: 7108

Re: Naming [ENDORSED]

I think generally iso and neo are for alkyl groups and sec and tert are used for carbon atoms which have functional groups
by EmilyLeibovitch2E
Thu Mar 09, 2017 7:21 pm
Forum: *Electrophiles
Topic: Determining if a molecule is a nucleophile
Replies: 2
Views: 379

Re: Determining if a molecule is a nucleophile

I thought the rule was that if there is a partial negative or full negative, no matter what it is a nucleophile. For an electrophile, if there is a partial positive or full positive it is always an electrophile. Is this correct?
by EmilyLeibovitch2E
Thu Mar 09, 2017 7:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 14116

Re: Quiz 3 Winter 2017

Is it correct that electrophilic addition always has 2 intermediates where SN2 only has 1?
by EmilyLeibovitch2E
Sun Mar 05, 2017 10:58 pm
Forum: *Alkanes
Topic: Naming Organic Molecules
Replies: 5
Views: 390

Re: Naming Organic Molecules

I thought the parent chain could go either left to right or right to left? Does the direction of the chain matter?
by EmilyLeibovitch2E
Sat Mar 04, 2017 3:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 13796

Re: Quiz 2 Winter 2017

What was the average for Quiz 3?
by EmilyLeibovitch2E
Sun Feb 26, 2017 8:19 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Midterm #3b
Replies: 2
Views: 317

Re: Midterm #3b

For this question, it may have been important to discuss the gas, not just the amount of substances. Specifically, because there is gas on the reactant side but no gas on the product side, the entropy is decreased.
by EmilyLeibovitch2E
Sun Feb 19, 2017 3:18 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: First order, second order reactions [ENDORSED]
Replies: 6
Views: 725

Re: First order, second order reactions [ENDORSED]

Will we ever be asked to do a third or forth order reaction even though it wasn't covered in the course reader?
by EmilyLeibovitch2E
Sun Feb 12, 2017 11:37 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Delta G vs Delta G0
Replies: 5
Views: 1107

Re: Delta G vs Delta G0

You use the same equations for both. The difference is that deltaG0 is with standard conditions whereas deltaG is with nonstandard conditions.
by EmilyLeibovitch2E
Sun Feb 05, 2017 6:02 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Question on Units of Temperature
Replies: 4
Views: 308

Re: Question on Units of Temperature

Can you write all of the answers on quizzes/midterms in Kelvin?
by EmilyLeibovitch2E
Sun Feb 05, 2017 5:55 pm
Forum: Phase Changes & Related Calculations
Topic: Enthalpy
Replies: 8
Views: 719

Re: Enthalpy

How do you know when to use Kelvin or Celsius in a problem? Can you just always use and convert a question to Kelvin?
by EmilyLeibovitch2E
Mon Jan 30, 2017 6:40 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 1 Preparation Answers
Replies: 130
Views: 12328

Re: Quiz 1 Preparation Answers

Is there a PDF that someone could post with exactly how to solve each problem on Quiz 1 Prep?
by EmilyLeibovitch2E
Sun Jan 22, 2017 5:22 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Significant Figure [ENDORSED]
Replies: 7
Views: 579

Re: Significant Figure [ENDORSED]

Can someone post the exact rules for significant figures or does anyone know where I could find them?
by EmilyLeibovitch2E
Sun Jan 22, 2017 5:20 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 38
Views: 19502

Re: Tutoring? [ENDORSED]

Hi, if you are not a part of AAP, are you still able to attend sessions? Also, does anyone have the exact requirements to be able to attend the sessions?
by EmilyLeibovitch2E
Mon Jan 16, 2017 12:00 am
Forum: Student Social/Study Group
Topic: Chemistry Joke
Replies: 28
Views: 2311

Re: Chemistry Joke

A man and a woman are sitting at a bar. One has a shirt saying 'Polar', the other, 'Non Polar'
Woman: Sorry, I just don't think the chemistry is right.
by EmilyLeibovitch2E
Tue Jul 26, 2016 10:59 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Subscript and oxidation number
Replies: 1
Views: 342

Re: Subscript and oxidation number

The oxidation number would be 2. Which subscript are you referring to?
by EmilyLeibovitch2E
Tue Jul 26, 2016 3:47 pm
Forum: *Indicators
Topic: Indicators
Replies: 3
Views: 726

Re: Indicators

Other than indicators, is there anything else in the course reader that will be excluded from the final?
by EmilyLeibovitch2E
Wed Jul 20, 2016 2:42 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: When to use Kp or Kc
Replies: 2
Views: 439

When to use Kp or Kc

If we have a reaction and all the reactants and products are gasses, (none are aqueous) can we use either concentrations (Kc) or partial pressures (Kp), or are we only suppose to use Kp since they are all gasses?
by EmilyLeibovitch2E
Wed Jul 20, 2016 2:35 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Changing amount of a Solid
Replies: 3
Views: 460

Re: Changing amount of a Solid

If we changed the temperature would we also not include 3Fe since it is a solid?
by EmilyLeibovitch2E
Mon Jul 18, 2016 9:08 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Bonding Strength
Replies: 3
Views: 481

Re: Bonding Strength

Is there a relation between bond strength and bond order?
by EmilyLeibovitch2E
Mon Jul 18, 2016 8:54 pm
Forum: Naming
Topic: Iron [ENDORSED]
Replies: 6
Views: 700

Re: Iron [ENDORSED]

I know iron is a common transition metal which changes to ferrate when it is an anion. I was wondering if copper did the same thing where copper as a cation is “copper” and as an anion it is “cuprate”?
by EmilyLeibovitch2E
Mon Jul 18, 2016 8:44 pm
Forum: Naming
Topic: "ion"
Replies: 3
Views: 299

Re: "ion"

If the coordination compound has a net electric charge do you have to put the word “ion” at the end, or is it just optional to add “ion” when naming a coordination compound?
by EmilyLeibovitch2E
Thu Jul 14, 2016 8:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: electron domain geometry vs molecular geometry [ENDORSED]
Replies: 3
Views: 862

Re: electron domain geometry vs molecular geometry [ENDORSED]

Just to clarify, for electron domain geometry should we count the lone pairs as bonds, for example, would AX2E2 be tetrahedral, or should we not include the lone pairs at all when looking at electron geometry and AX2E2 should be considered linear?
by EmilyLeibovitch2E
Sun Jul 10, 2016 7:49 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration of HOCO
Replies: 2
Views: 260

Electron Configuration of HOCO

How do you determine which element to put the extra electron onto in the example on the Midterm (A Session 2016 Q9B) of HOCO?
by EmilyLeibovitch2E
Sun Jul 03, 2016 9:53 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7022
Views: 771740

Re: Chemistry Jokes

Q: What did the bartender say when oxygen, hydrogen, sulfur, sodium, and phosphorous walked into his bar?

A: OH SNaP!
by EmilyLeibovitch2E
Tue Jun 28, 2016 5:03 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7022
Views: 771740

Re: Chemistry Jokes

Q: What does a photon say when he checks into a hotel and is asked if he needs any help with his luggage.

A: He says, "No, I'm traveling light."

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