Search found 21 matches

by Amy Dao 3K
Sun Mar 13, 2016 10:27 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Cyclohexane chair conformations
Replies: 1
Views: 284

Re: Cyclohexane chair conformations

trans will have the substituent up and and the other down in the other position. cis will have them both either up or down.
by Amy Dao 3K
Thu Mar 03, 2016 10:51 am
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Higher Priority
Replies: 2
Views: 4801

Higher Priority

Between CH3 and CH2 and CH which has the higher priority and why? Thanks and let me know
by Amy Dao 3K
Sun Feb 28, 2016 11:46 pm
Forum: *Alkenes
Topic: Numbering
Replies: 1
Views: 366

Re: Numbering

Yes double bonds want to have the lowest number when naming
by Amy Dao 3K
Sun Feb 21, 2016 11:16 pm
Forum: *Nucleophiles
Topic: Nucleophiles
Replies: 2
Views: 377

Re: Nucleophiles

Nice pun first of all. hahhaa :) But yeah nulcleophiles by definition are lewis bases because they donate electrons I believe
by Amy Dao 3K
Sun Feb 14, 2016 9:54 pm
Forum: Zero Order Reactions
Topic: Slope of different reactions (0,1st 2nd)
Replies: 1
Views: 294

Re: Slope of different reactions (0,1st 2nd)

Yeah you can assume that.
by Amy Dao 3K
Mon Feb 08, 2016 12:02 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Oxidizing Agent
Replies: 1
Views: 265

Oxidizing Agent

Why is an oxidized species strongly oxidizing and vice versa? For some reason it seems counterintuitive to me. Thanks for the help!
by Amy Dao 3K
Sun Jan 31, 2016 10:12 pm
Forum: Balancing Redox Reactions
Topic: standard reaction potentials
Replies: 1
Views: 300

standard reaction potentials

On page 50 of the course reader, I noticed that the standard reaction potentials were not affected by the fact that we multiplied the half reactions by two. Why do these numbers not change?
by Amy Dao 3K
Sun Jan 24, 2016 9:39 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Spontaneity
Replies: 1
Views: 305

Spontaneity

On page 39 of the course reader, under the section "rxn or physical change," why is is that when the change in s and the change in h are negative, the reaction is spontaneous at a low temp? Doesn't a negative change in s mean that the reaction is not spontaneous?
by Amy Dao 3K
Sun Jan 17, 2016 11:59 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Closed versus Isolated System
Replies: 2
Views: 391

Re: Closed versus Isolated System

I believe you should consider the high-quality thermos to be isolated. I do agree that realistically yeah, the system should be considered closed because the thermos probably can't contain all the energy forever, as with many other things, but because the textbook makes the effort to point out that ...
by Amy Dao 3K
Sun Jan 10, 2016 9:27 pm
Forum: Phase Changes & Related Calculations
Topic: Standard State
Replies: 3
Views: 397

Standard State

On page 20 of the course reader it says make sure everything is in standard state and that the reaction is balanced. I'm a little confused to as what it means by standard state?
by Amy Dao 3K
Mon Nov 30, 2015 12:38 am
Forum: Polyprotic Acids & Bases
Topic: How to identify a polyprotic acid/base
Replies: 1
Views: 7884

How to identify a polyprotic acid/base

Is there a a general trend in the table to know which elements can form polyprotic acids and bases? How does one know if an acid or base is polyprotic?
by Amy Dao 3K
Sun Nov 22, 2015 8:54 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Anion exceptions
Replies: 1
Views: 326

Anion exceptions

Why do HSO4- AND H2PO4- acts as acids (because generally very few anions act as acids)? Is there something different about their structure that make them act like an acid?
by Amy Dao 3K
Sun Nov 15, 2015 9:15 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Adding Water
Replies: 2
Views: 483

Re: Adding Water

Hi! Water will affect the concentration so long as it is not in a liquid (or I guess solid form either), because when water is a liquid, it is by definition present at unit concentration, so changing the amount of water will not affect the reaction. Also, I believe that aqueous molecules are always ...
by Amy Dao 3K
Sun Nov 08, 2015 11:35 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K Constant
Replies: 3
Views: 430

Re: K Constant

Also, intermediate values of K, favor neither the reactants or products.
by Amy Dao 3K
Sun Nov 08, 2015 11:34 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K Constant
Replies: 3
Views: 430

Re: K Constant

A large K favors formation of products while a small K favors more reactants at equilibrium.
by Amy Dao 3K
Sun Nov 01, 2015 5:09 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: electron configuration of FC bond
Replies: 2
Views: 430

Re: electron configuration of FC bond

I believe that you do not have to write out any more orbitals than the ones that have electrons in them but someone please correct me if I'm wrong.
by Amy Dao 3K
Sun Oct 25, 2015 11:26 pm
Forum: Lewis Structures
Topic: exceptions to octets
Replies: 2
Views: 431

exceptions to octets

In the course reader,it states that H, Li, and Be are excepions t the octet rule, but isn't Boron also an exception? Are there any more exceptions we should also know about?
by Amy Dao 3K
Sun Oct 25, 2015 11:22 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Shape
Replies: 1
Views: 248

Re: VSEPR Shape

In the course reader, it states that because only four of six positions are occupies by atoms, the four atoms have a square planar shape. In my discussion class, we also were kind-of told that because the lone pairs are on opposites sides, the influence they have on bending the shape balance out and...
by Amy Dao 3K
Mon Oct 19, 2015 2:53 am
Forum: Octet Exceptions
Topic: Food Supplements
Replies: 1
Views: 327

Food Supplements

How do food supplements react with radicals before they can cause damage exactly?
by Amy Dao 3K
Mon Oct 12, 2015 12:22 am
Forum: Einstein Equation
Topic: wattAGE
Replies: 1
Views: 423

wattAGE

when a problem is stating the wattage of a lightbulb, what does this mean? Like does this refer to the energy? thank you in advance!
by Amy Dao 3K
Sat Oct 03, 2015 1:19 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: question about momentum
Replies: 2
Views: 492

question about momentum

If there are things that have undetectable masses, how is the momentum of that thing calculated so that it can be used in the formula p x v?

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