Search found 22 matches

by Perla Cervantes_1G
Sun Jun 03, 2018 10:22 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Bonds
Replies: 2
Views: 203

Re: Bonds

Hope the following helps :)
by Perla Cervantes_1G
Sun Jun 03, 2018 10:16 pm
Forum: Biological Examples
Topic: Hemoglobin Structure
Replies: 3
Views: 208

Re: Hemoglobin Structure

From my understanding, no. But you should ask in class tomorrow just to be sure.
by Perla Cervantes_1G
Sun Jun 03, 2018 10:13 pm
Forum: Dipole Moments
Topic: dipole moments
Replies: 9
Views: 375

Re: dipole moments

I was wondering the same exact thing and found this video online to be very helpful in understanding how to determine the length of a vector during a dipole-dipole moment.

https://www.youtube.com/watch?v=ium2E9zKGLE
by Perla Cervantes_1G
Sun May 20, 2018 11:46 pm
Forum: Ionic & Covalent Bonds
Topic: ionic and covalent character
Replies: 7
Views: 285

Re: ionic and covalent character

Ionic bonds have shared electrons and weaker bonds Covalent bonds have transferred electrons and and stronger bonds *if the electronegativity is less than 1.67 it is usually considered covalent, and if greater, then ionic ** The farther apart the elements on the periodic table, the larger the electr...
by Perla Cervantes_1G
Sun May 20, 2018 11:42 pm
Forum: Bond Lengths & Energies
Topic: Bond Length
Replies: 9
Views: 379

Re: Bond Length

*in order of decreasing bond length
triple bonds <double bonds < single bonds

-no rule, just general knowledge. The person above me did a wonderful job at explaining the reasoning behind it :)
by Perla Cervantes_1G
Sun May 20, 2018 11:39 pm
Forum: Lewis Structures
Topic: Lewis Dot vs Lewis Structure
Replies: 3
Views: 122

Re: Lewis Dot vs Lewis Structure

Hi!

Here is a link to a video that has helped me better differentiate the two.

https://study.com/academy/lesson/lewis- ... bonds.html

Hope it helps!
by Perla Cervantes_1G
Thu May 10, 2018 8:56 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: H-Atom
Replies: 3
Views: 210

H-Atom

What is the relationship between the hydrogen atom and Rydberg constant?
by Perla Cervantes_1G
Thu May 10, 2018 8:53 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: De Broglie Equation in Heisenberg Uncertainty Equation
Replies: 2
Views: 219

De Broglie Equation in Heisenberg Uncertainty Equation

Hi! I was just wondering if there are any instances in which we would use the De Broglie equation to: 1) find the uncertainty in velocity 2) then use this velocity to solve the problem In other words, will there ever be an instance in which the problem requires that we use both the De Broglie equati...
by Perla Cervantes_1G
Sun May 06, 2018 5:10 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Percentages When Solving for Molecular Formula
Replies: 2
Views: 204

Percentages When Solving for Molecular Formula

The following question is #22 from module 1: Xylitol, a sugar substitute, has a mass composition of C 39.43% O 52.58% H 7.88% and a molar mass of 152.15 g.mol-1 What is its molecular formula? My question is, how do we know when we should divide the percentages by 100? From what I've read online we c...
by Perla Cervantes_1G
Fri May 04, 2018 4:46 pm
Forum: Properties of Light
Topic: Frequency and Wavelength
Replies: 3
Views: 198

Frequency and Wavelength

What is the relationship between frequency and wavelength?
by Perla Cervantes_1G
Fri May 04, 2018 4:42 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Shapes within the P orbital [ENDORSED]
Replies: 3
Views: 277

Shapes within the P orbital [ENDORSED]

Will we need to memorize the three types of structures possible within the P orbital?
by Perla Cervantes_1G
Fri May 04, 2018 4:38 pm
Forum: DeBroglie Equation
Topic: Bohr vs Speed of Light Equation
Replies: 3
Views: 155

Bohr vs Speed of Light Equation

How do you know when to use the Bohr equation vs the Speed of Light equation when solving for frequency?
by Perla Cervantes_1G
Wed Apr 25, 2018 11:24 am
Forum: Limiting Reactant Calculations
Topic: Mass of Reactant/Product
Replies: 4
Views: 314

Mass of Reactant/Product

Can the mass of a product (or products) be greater than the total mass of reactant (or reactants)?
by Perla Cervantes_1G
Sun Apr 22, 2018 11:58 pm
Forum: *Black Body Radiation
Topic: Black Body [ENDORSED]
Replies: 4
Views: 515

Black Body [ENDORSED]

Why is it so rare for a black body to exist--specifically, why is it so difficult to find an object that exerts 100% of its energy?
by Perla Cervantes_1G
Sun Apr 22, 2018 11:57 pm
Forum: Properties of Electrons
Topic: Mass of an Electron [ENDORSED]
Replies: 4
Views: 236

Mass of an Electron [ENDORSED]

How is one able to measure the mass of an electron if we cannot actually see the electron?
by Perla Cervantes_1G
Sun Apr 22, 2018 11:56 pm
Forum: Properties of Light
Topic: Wave and Particle
Replies: 10
Views: 386

Wave and Particle

How can we differentiate when light is traveling as a wave, or particle?
by Perla Cervantes_1G
Mon Apr 09, 2018 4:23 pm
Forum: SI Units, Unit Conversions
Topic: Temperature
Replies: 5
Views: 267

Temperature

Why is there three units of temperature? Are we supposed to use them each for a specific purpose?
by Perla Cervantes_1G
Mon Apr 09, 2018 4:16 pm
Forum: Properties of Electrons
Topic: Electromagnetic Field [ENDORSED]
Replies: 7
Views: 257

Electromagnetic Field [ENDORSED]

Can someone please explain why, in the electromagnetic field, the electric field points upward while the magnetic field points rightward?
by Perla Cervantes_1G
Mon Apr 09, 2018 4:14 pm
Forum: Properties of Light
Topic: Frequency vs Cycle
Replies: 5
Views: 289

Frequency vs Cycle

Are frequency and cycle the same thing? I believe professor Lavelle said that we could use the two terms interchangeably, but can someone please clarify?
by Perla Cervantes_1G
Mon Apr 09, 2018 4:09 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Using Precision and Accuracy to Solve A Problem
Replies: 3
Views: 182

Using Precision and Accuracy to Solve A Problem

I understand that precision is how close to one another measurements are and I also know that accuracy is define measurements that are close to their true value. However, do we need a high precision AND high accuracy in order to solve for a correct answer? Or can one be compromised (precision for ex...
by Perla Cervantes_1G
Mon Apr 09, 2018 4:04 pm
Forum: Balancing Chemical Reactions
Topic: Balancing Equations With Rational Coefficients [ENDORSED]
Replies: 3
Views: 129

Balancing Equations With Rational Coefficients [ENDORSED]

What is the balanced chemical equation? 2Na+2H20------> 2NaOH+H2 I understand that mass cannot be created, or destroyed--thus, an element must have the same quantity in the reactant and product side. In this example Professor Lavelle used a fraction (13/2) to balance this equation. However, I do not...
by Perla Cervantes_1G
Mon Apr 09, 2018 3:53 pm
Forum: SI Units, Unit Conversions
Topic: Length Units
Replies: 15
Views: 524

Length Units

As Dr. Lavelle mentioned during lecture today, the SI unit for length is measured in meters (m). However, he also mentioned that we would need to utilize these SI units to convert them into other units depending on the type of problem. My question is: when not specifically asked for the answer in a ...

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