Search found 20 matches

by Heather Lindsay 1H
Thu Mar 10, 2016 3:26 pm
Forum: *Alkanes
Topic: Constitutional Isomers
Replies: 2
Views: 410

Constitutional Isomers

If we are asked to draw all of the constitutional isomers of a molecule given a particular molecular formula, how do we know that we have covered them all?
by Heather Lindsay 1H
Thu Mar 03, 2016 2:53 pm
Forum: *Alkanes
Topic: Priority within Naming
Replies: 1
Views: 232

Priority within Naming

When it comes to assigning numbers when naming organic structures, what is the order of priority for substituents, double bonds, and functional groups?
by Heather Lindsay 1H
Thu Feb 25, 2016 6:26 pm
Forum: *Alkanes
Topic: Double Headed Arrow
Replies: 4
Views: 672

Double Headed Arrow

How do we know to use a double headed arrow? When a bond breaks, are two electrons considered to be transferred?
by Heather Lindsay 1H
Thu Feb 18, 2016 10:15 pm
Forum: General Rate Laws
Topic: General Rate Laws
Replies: 1
Views: 264

General Rate Laws

In what context would you use the general rate laws as opposed to the integrated rate laws for specific orders?
by Heather Lindsay 1H
Thu Feb 11, 2016 2:25 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Stoichiometric Coefficients and Order
Replies: 1
Views: 294

Stoichiometric Coefficients and Order

How are stoichiometric coefficients in a reaction related to finding the order of that reaction?
by Heather Lindsay 1H
Thu Feb 04, 2016 5:27 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Faraday's Constant
Replies: 2
Views: 669

Faraday's Constant

What is the value of Faraday's constant and where did it come from? Why is it relevant to us in electrochemistry?
by Heather Lindsay 1H
Thu Jan 28, 2016 4:25 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Change in Enthalpy When Isothermic & Constant P
Replies: 2
Views: 441

Change in Enthalpy When Isothermic & Constant P

Why is the change in enthalpy 0 when a system is isothermic at constant pressure?
by Heather Lindsay 1H
Wed Jan 20, 2016 12:46 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Third Law of Thermodynamics
Replies: 1
Views: 368

Third Law of Thermodynamics

Why is it that as T->0, S->0? What is the reasoning behind the Third Law of Thermodynamics?
by Heather Lindsay 1H
Thu Jan 14, 2016 4:00 pm
Forum: Calculating Work of Expansion
Topic: PV=nRT (not at constant pressure)
Replies: 1
Views: 393

PV=nRT (not at constant pressure)

Here is the basic information from the first part of Question 8.28 in the Textbook: A gas cylinder at 3.42 L, 298 K, 2.57 atm expands to 7.39L through an isothermal, reversible expansion. Calculate the work done. So, I know that the system is not at constant pressure, so the work equation to use in ...
by Heather Lindsay 1H
Thu Jan 07, 2016 5:37 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Lowest Energy State of an Element
Replies: 1
Views: 312

Lowest Energy State of an Element

How does one know if an element is in it's lowest energy state?
by Heather Lindsay 1H
Thu Dec 03, 2015 12:00 am
Forum: Polyprotic Acids & Bases
Topic: pH of Polyprotic Acids and Bases
Replies: 1
Views: 389

pH of Polyprotic Acids and Bases

In most cases, when calculating the pH or the pOH of a polyprotic acid or base, why is only the KA1 considered and not the KA2?
by Heather Lindsay 1H
Mon Nov 23, 2015 5:16 pm
Forum: Ideal Gases
Topic: Boiling Point of a Liquid
Replies: 1
Views: 365

Boiling Point of a Liquid

How does altitude/difference in pressure affect the boiling point of a liquid? Is the boiling point of a liquid higher at a lower altitude? If so, why is this true?
by Heather Lindsay 1H
Wed Nov 18, 2015 10:34 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Shape of Coordination Compound
Replies: 1
Views: 359

Shape of Coordination Compound

What determines whether a coordination compound with a coordination # of 4 is tetrahedral or square planar?
by Heather Lindsay 1H
Thu Nov 12, 2015 3:17 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Changing Concentrations of Solids
Replies: 1
Views: 253

Changing Concentrations of Solids

Why does changing the concentration of a solid in a reaction have no effect on the value of the equilibrium constant?
by Heather Lindsay 1H
Wed Nov 04, 2015 10:47 am
Forum: Hybridization
Topic: HOMO AND LUMO
Replies: 3
Views: 611

Re: HOMO AND LUMO

In what kind of problem would we apply the concepts of HOMO and LUMO? How does knowing the HOMO and LUMO of an MO diagram give us any extra information?
by Heather Lindsay 1H
Mon Oct 26, 2015 5:05 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Shapes of AX2E and AX2E2
Replies: 1
Views: 643

VSEPR Shapes of AX2E and AX2E2

Are the VSEPR diagrams of AX2E and AX2E2 both called angular/bent? Is the only difference the angles created?
by Heather Lindsay 1H
Thu Oct 22, 2015 8:08 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Strengths of Repulsions
Replies: 3
Views: 436

Re: Strengths of Repulsions

Why are the strengths of the repulsions in this order? What makes a lone pair bonded to another lone pair have more strength than other combinations?
by Heather Lindsay 1H
Thu Oct 15, 2015 12:44 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical Formula
Replies: 1
Views: 353

Empirical Formula

If given the mass of each of the products, how do you find the empirical formula of one of the reactants (given that you also know the mass of the reactant in question)?
by Heather Lindsay 1H
Tue Oct 06, 2015 10:31 am
Forum: Photoelectric Effect
Topic: Photoelectric effect
Replies: 8
Views: 841

Re: Photoelectric effect

Is ultraviolet light the longest wavelength that is effective in the photoelectric effect or is it just dependent on the type of metal being used?
by Heather Lindsay 1H
Thu Oct 01, 2015 4:21 pm
Forum: Properties of Light
Topic: Rydberg Formula
Replies: 7
Views: 2068

Re: Rydberg Formula

Where does the value for the Rydberg constant come from? In other words, why is it 3.29x10^15 Hz?

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