Search found 20 matches

by Chris Gris 3I
Fri Mar 11, 2016 12:29 am
Forum: *Cycloalkenes
Topic: Difference between neo-, iso-, tert-, etc.?
Replies: 1
Views: 401

Difference between neo-, iso-, tert-, etc.?

What is the difference between those prefixes? Are they used in common naming or IUPAC naming?
by Chris Gris 3I
Fri Mar 11, 2016 12:23 am
Forum: *Alkanes
Topic: Functional Groups
Replies: 3
Views: 492

Functional Groups

When you have more than one functional group in a single molecule, does it matter which one you name first? Or can you put them in any order?
by Chris Gris 3I
Tue Feb 09, 2016 5:50 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Question 14.91
Replies: 1
Views: 246

Re: Question 14.91

Almost positive that's a solution manual error, I'm as confused as you are
by Chris Gris 3I
Tue Feb 09, 2016 3:40 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: How to derive equation for K? (14.35)
Replies: 1
Views: 321

How to derive equation for K? (14.35)

How is the equation used in problem 14.35 derived? Or where did it come from? The equation is ln k=nFE/RT
by Chris Gris 3I
Tue Feb 09, 2016 12:39 am
Forum: Balancing Redox Reactions
Topic: Homework 14.17 Help
Replies: 1
Views: 336

Homework 14.17 Help

14.17 asks you to write balanced half-reactions for the redox reaction of a solution of potassium permanganate and iron(II) chloride.

How do you know what the charge of manganese (MnO4-) will be on the other side of the half reaction?
by Chris Gris 3I
Wed Jan 20, 2016 3:13 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Enthalpy Equation Clarification
Replies: 2
Views: 302

Enthalpy Equation Clarification

I've noticed that sometimes to find enthalpy, the equation Q=mCT is used while other times, instead of mass, the number of moles is used (Q=nCT). Why is this? For example, in homework 8.31, Q=nCT is used, but when I solved the problem I used mass rather than moles.
by Chris Gris 3I
Mon Jan 18, 2016 10:25 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Equations used in Homework 8.25
Replies: 1
Views: 315

Equations used in Homework 8.25

Where does the C=q/T equation come from? And why do we ignore the values for Liters and Molarities that the question gives us?
by Chris Gris 3I
Mon Jan 18, 2016 9:46 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Sig Figs in 8.21
Replies: 2
Views: 327

Sig Figs in 8.21

The question gives you a bunch of values with 3 sig figs, yet the answer in the solution's manual only has 2 sig figs (25 Degrees Celsius). Why? Shouldn't the answer have 3 sig figs?
by Chris Gris 3I
Wed Jan 13, 2016 9:33 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeter
Replies: 1
Views: 231

Calorimeter

What, if any, is the difference between a bomb calorimeter and a coffee cup calorimeter? Can they be used interchangeably?
by Chris Gris 3I
Fri Jan 08, 2016 8:30 am
Forum: Phase Changes & Related Calculations
Topic: Vaporization Heat Transfer
Replies: 3
Views: 641

Re: Vaporization Heat Transfer

The above responses are correct. Vaporization is endothermic. Think about it in regards to water; vaporization is the change between liquid water and gaseous water. In order for the water particles to be moving fast enough to be in the gaseous phase, they must absorb heat. Thus, the process in endot...
by Chris Gris 3I
Wed Nov 18, 2015 5:00 pm
Forum: Naming
Topic: Correct name for Na[Co(NH3)3Cl3]?
Replies: 3
Views: 6064

Re: Correct name for Na[Co(NH3)3Cl3]?

Why is there an added "ate" to the end if it isn't an anion?
by Chris Gris 3I
Tue Nov 10, 2015 12:23 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium constant and p
Replies: 5
Views: 412

Re: Equilibrium constant and p

I also had the same question. When writing equilibrium expressions, do you have to write them as (in the case of question 11.3) as K=(PN2O3)/(PN2)(PO3) or is K=[N2O3]/[N2][O3] also correct?
by Chris Gris 3I
Sun Nov 08, 2015 3:47 pm
Forum: Naming
Topic: Use of Parenthesis
Replies: 1
Views: 320

Use of Parenthesis

Why is it that sometimes, parenthesis are used in the formulas of coordination compounds? For example, in sodium bisoxolato(diaqua) ferrate (III), would I be marked wrong if I dropped the parenthesis around diaqua?
by Chris Gris 3I
Sun Nov 08, 2015 3:27 pm
Forum: Naming
Topic: Order of Listing
Replies: 2
Views: 380

Order of Listing

When you are given the name of a coordination compound (for example, triamminediaquahydroxidochromium(II) chloride) and asked to write the formula, does the order you list the ligands matter? For example, would it make a difference if you wrote the formula as [Cr(NH3)3(OH2)2(OH)]Cl or as [Cr(OH2)2(O...
by Chris Gris 3I
Mon Oct 26, 2015 11:20 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Naming the molecular geometry vs regions of electrons
Replies: 1
Views: 298

Naming the molecular geometry vs regions of electrons

In the solutions manual for #4.5, I noticed that it gave both the molecular geometry (bent/angular) and the electron domain (trigonal planar) when the question asked for the shape of the ion. However when I answered the question, I only answered for the molecular geometry. In the future, should I an...
by Chris Gris 3I
Mon Oct 26, 2015 11:08 am
Forum: Lewis Structures
Topic: Drawing Lewis Structures
Replies: 1
Views: 200

Drawing Lewis Structures

As I moved into the chapter 4 homework, I noticed that some Lewis Structures in the solutions manual were drawn with the thick or dashed lines indicating 3D shape. On a quiz or test, will we have to draw Lewis Structures like that or is it okay to demonstrate them on a 2D level?
by Chris Gris 3I
Tue Oct 20, 2015 8:31 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarisability
Replies: 1
Views: 374

Polarisability

Between N3- and O2-, which ion is more polarizable? I know that as size increases, so does polarisability, so logically O2-, which has an extra proton, would be bigger; however, the electron-electron repulsion in N3- make it seem as if the radius of N3- would be larger. So what is it?
by Chris Gris 3I
Tue Oct 20, 2015 7:43 pm
Forum: Bond Lengths & Energies
Topic: Bond Strength In Same Group
Replies: 6
Views: 1057

Bond Strength In Same Group

I understand that bond strength is determined by bond length, and that triple bonds are stronger than double bonds, and double bonds stronger than single; however, I don't understand how you can determine which bond is stronger between two compounds with nearly identical Lewis structures but with di...
by Chris Gris 3I
Wed Oct 14, 2015 3:33 pm
Forum: Properties of Light
Topic: Intensity vs. Energy
Replies: 1
Views: 1108

Intensity vs. Energy

What is the difference between the intensity of light and the energy of light? Why is it that when you double the frequency, the energy is not effected but the intensity of light is?
by Chris Gris 3I
Mon Oct 05, 2015 11:20 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Question about the Rydberg Formula?
Replies: 1
Views: 420

Question about the Rydberg Formula?

I've been noticing some different forms of the Rydberg Formula showing up during lectures, discussions, and while doing homework and am rather confused as to which one is... well, correct. Why is it that sometimes the equation is written as the first attached picture and not the second? And vise-ver...

Go to advanced search