Search found 20 matches

by Genisis Cabral
Sat Dec 09, 2017 1:55 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration for ions
Replies: 2
Views: 214

Electron Configuration for ions

When presented with an positive ion of an element for example like Fe2+, I go about writing the electron configuration of the original element itself but afterwards I feel as though I may still be confused on how to write the configuration correctly. My thought was that you would remove electrons fr...
by Genisis Cabral
Sat Dec 09, 2017 1:47 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reagent and finding amount produced
Replies: 2
Views: 172

Limiting Reagent and finding amount produced

When asked to find how much of a certain product is produced, how would you go about using the limiting reagent to do so? This step is a bit confusing so any clarification is helpful!
by Genisis Cabral
Sun Dec 03, 2017 6:30 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Number
Replies: 4
Views: 268

Coordination Number

To clarify, is the coordination number simply the number of bonds so if you were determining it based off of the lewis structure would you count the bonds the central atom has?
by Genisis Cabral
Sun Dec 03, 2017 6:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angle
Replies: 1
Views: 114

Bond Angle

In situations where there are two bond angles such as 120 and 90 in molecular shapes such as trigonal bipyramidal, how would you know what bond has the 120/90 degree when labeling?
by Genisis Cabral
Sun Nov 26, 2017 12:28 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Non-equilibirum situations
Replies: 2
Views: 125

Non-equilibirum situations

In situations where a certain system is not at equilibrium, how would we go about deciding what direction it goes, proceeds to the products/reactants? Any clarification is much appreciated!
by Genisis Cabral
Sun Nov 26, 2017 12:23 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Chemical Equilibrium
Replies: 2
Views: 131

Chemical Equilibrium

When finding the chemical equilibrium, solids and liquids are not included within the K expressions? To clarify, are they not included because their molar concentration experiences no change?
by Genisis Cabral
Sun Nov 19, 2017 7:54 pm
Forum: Hybridization
Topic: How to tell the hybridization [ENDORSED]
Replies: 4
Views: 228

How to tell the hybridization [ENDORSED]

When looking at the lewis structure of a compound such as ethane, how would you use that too quickly tell what the hybridization of the compound is? Is there a quick method to do so?
by Genisis Cabral
Sun Nov 19, 2017 7:48 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligands
Replies: 2
Views: 154

Ligands

Coordination Compounds hold certain biological importance but in terms of ligands what are their basic function/importance?
by Genisis Cabral
Sun Nov 12, 2017 1:02 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Radicals and bond angles
Replies: 1
Views: 114

Radicals and bond angles

I need some quick clarification on how radicals impact bond angles in comparison too lone pairs? Would radicals for example make a bond angle greater than or less than the given degree (e.g. greater than 109.5 or less than 109.5)?
by Genisis Cabral
Sun Nov 12, 2017 12:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Notation
Replies: 3
Views: 170

VSEPR Notation

When we use the VSEPR notation, we learned about how some molecules have the same formula. To clarify, in these situation, would the only difference between them be the slightly different bond angles?
by Genisis Cabral
Sun Nov 05, 2017 11:14 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 3
Views: 152

Bond Angles

How would we go about determine the bond angles within a molecular structure. I noticed that there are common angles with molecular structures such as 90, 120, 180, but in general how would we determine these angles and know they are correct?
by Genisis Cabral
Sun Nov 05, 2017 11:02 am
Forum: Determining Molecular Shape (VSEPR)
Topic: 3-D Lewis Structure Drawing
Replies: 2
Views: 109

3-D Lewis Structure Drawing

For the most part we have been drawing 2-D lewis structures during lecture, but how would we go about drawing the 3-D structure from a 2-D structure?
by Genisis Cabral
Fri Oct 27, 2017 3:13 pm
Forum: Resonance Structures
Topic: Bond lengths in resonance structures
Replies: 1
Views: 170

Bond lengths in resonance structures

Today in lecture, we saw the bond lengths within the Benzene and Nitrate resonance structures, and I was a bit confused on where they came from. So are these observed bond lengths just a given or would we have to know how to calculate them?
by Genisis Cabral
Fri Oct 27, 2017 3:06 pm
Forum: Resonance Structures
Topic: Resonance Structure of Sulfate
Replies: 1
Views: 188

Resonance Structure of Sulfate

After learning about the formal charge of an atom in today's lecture, we began to draw the resonance structure for sulfate. It was then brought up that after finding the FC (formal charge) for both oxygen and sulfate, we could draw a better structure and so new double bonds were placed. In this situ...
by Genisis Cabral
Fri Oct 20, 2017 3:55 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Magnetic Quantum Numbers [ENDORSED]
Replies: 6
Views: 368

Re: Magnetic Quantum Numbers [ENDORSED]

The positive and negative symbols may just be a reference to the fact that the values of the magnetic quantum numbers are dependent on the angular momentum quantum number (l) and because of the given l the magnetic quantum number can then be a negative or positive integer along with zero. Not to sur...
by Genisis Cabral
Fri Oct 20, 2017 3:10 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbitals and Electron Configuration
Replies: 3
Views: 169

Orbitals and Electron Configuration

When writing the electron configuration of different elements, why is it that we write 2px^1 or 2py^1 rather than 2p^2 as seen with carbon whose electron configuration is 1s^2, 2s^2, 2px^1, 2py^1. Is it just a simpler way or is there more too it? I'd greatly appreciate the clarification!
by Genisis Cabral
Fri Oct 13, 2017 6:39 pm
Forum: Photoelectric Effect
Topic: Balmer vs Lyman [ENDORSED]
Replies: 5
Views: 283

Re: Balmer vs Lyman [ENDORSED]

Yea again, most likely you won't need to memorize them, anything that you'd need to answer the given questions will be given to you. If I remember correctly my TA stated that if you really don't need to worry about memorizing the specific wavelengths and if it was needed it would be given. But it is...
by Genisis Cabral
Thu Oct 12, 2017 10:34 pm
Forum: Photoelectric Effect
Topic: Chapter 1, #27
Replies: 1
Views: 180

Chapter 1, #27

"A lamp rated at 32 W (1 W 1 J s 1) emits violet light of wavelength 420 nm. How many photons of violet light can the lamp generate in 2.0 s? How many moles of photons are emitted in that time interval?" I started off the problem by finding the total energy output and I did that by multipl...
by Genisis Cabral
Fri Oct 06, 2017 7:34 pm
Forum: Balancing Chemical Reactions
Topic: What’s the quickest way to approaching writing a balanced equation with only one given compound?
Replies: 3
Views: 220

What’s the quickest way to approaching writing a balanced equation with only one given compound?

When focusing on balanced equations, there are times when I encounter the need to write a balanced chemical equation after only receiving one compound in the given information. In these cases what is the quickest approach/method to write the correct reactants and products? Such clarification will be...
by Genisis Cabral
Thu Oct 05, 2017 7:21 pm
Forum: Empirical & Molecular Formulas
Topic: Fundamental F, F3
Replies: 1
Views: 152

Fundamental F, F3

In reference to nitric acid, in part B of the question, it asks "Without doing a calculation, estimate which element in nitric acid occurs with the greatest mass percentage". To clarify my understanding, in cases where we are asked to avoid calculation to determine the element with greates...

Go to advanced search