Search found 48 matches

by Nico Medina
Sun Feb 28, 2021 11:16 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Writing cell diagrams
Replies: 4
Views: 16

Re: Writing cell diagrams

I was wondering this as well, thanks!
by Nico Medina
Sun Feb 28, 2021 11:15 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Standard Reduction Potential
Replies: 4
Views: 8

Re: Standard Reduction Potential

I was wondering this as well, thanks!
by Nico Medina
Sun Feb 28, 2021 11:15 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagrams Question
Replies: 3
Views: 15

Re: Cell Diagrams Question

I was wondering this as well, thanks!
by Nico Medina
Sun Feb 28, 2021 11:12 pm
Forum: Balancing Redox Reactions
Topic: Sapling 3
Replies: 2
Views: 28

Re: Sapling 3

Very helpful. Thanks!
by Nico Medina
Sun Feb 21, 2021 10:54 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Standard Conditions
Replies: 8
Views: 19

Re: Standard Conditions

Thank you!
by Nico Medina
Sun Feb 21, 2021 10:53 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Sapling 5/6 #19
Replies: 4
Views: 39

Re: Sapling 5/6 #19

Thank you!
by Nico Medina
Sun Feb 21, 2021 10:53 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Focus 4 Exercise 59
Replies: 2
Views: 10

Re: Focus 4 Exercise 59

Thank you!
by Nico Medina
Sun Feb 21, 2021 10:53 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Textbook 5G.15
Replies: 2
Views: 10

Re: Textbook 5G.15

Thank you!
by Nico Medina
Sun Feb 21, 2021 10:50 pm
Forum: General Science Questions
Topic: MT 2 grades
Replies: 34
Views: 125

Re: MT 2 grades

Thanks everyone!
by Nico Medina
Sun Feb 21, 2021 10:49 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: isobaric
Replies: 15
Views: 36

Re: isobaric

I was wondering this as well. Thanks!
by Nico Medina
Sun Feb 07, 2021 11:26 pm
Forum: Calculating Work of Expansion
Topic: Help with Friday's Lecture
Replies: 3
Views: 22

Re: Help with Friday's Lecture

I was wondering the same. If anyone can explain it that would be awesome. Thanks!
by Nico Medina
Sun Feb 07, 2021 11:25 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: What are some ex's of open, closed, isolated systems?
Replies: 2
Views: 22

Re: What are some ex's of open, closed, isolated systems?

Very helpful example to help think about it. Thank you!
by Nico Medina
Sun Feb 07, 2021 11:24 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Sapling Question 19
Replies: 3
Views: 52

Re: Sapling Question 19

Very helpful. Thanks!
by Nico Medina
Sun Feb 07, 2021 11:21 pm
Forum: Phase Changes & Related Calculations
Topic: supercooling
Replies: 3
Views: 46

Re: supercooling

Super interesting. Thanks!
by Nico Medina
Sun Feb 07, 2021 11:20 pm
Forum: Phase Changes & Related Calculations
Topic: Midterm Q4
Replies: 7
Views: 145

Re: Midterm Q4

To add to the previous post, Br- comes from Hbr, a strong acid. Anions that come from stromg acids are spectator ions in solution. Hope this helps!
by Nico Medina
Sun Feb 07, 2021 11:18 pm
Forum: Phase Changes & Related Calculations
Topic: Phase Change differences
Replies: 2
Views: 24

Re: Phase Change differences

I was wondering the same thing. Thanks!!
by Nico Medina
Thu Nov 12, 2020 4:07 am
Forum: Bond Lengths & Energies
Topic: Intermolecular Potential Energy
Replies: 3
Views: 189

Re: Intermolecular Potential Energy

To specify, 'r' is the internuclear distance between the two atoms. That is, specifically, the distance between the nuclei of the atoms.
by Nico Medina
Thu Nov 12, 2020 4:05 am
Forum: Bond Lengths & Energies
Topic: Electron Density and Bond Length
Replies: 2
Views: 63

Re: Electron Density and Bond Length

To add to what was said above, one way to think about it would be to compare it to everyday objects. If you put two tennis balls (small atom) next to eachother and two basketballs (large atom) next to eachother, the centers (nuclei) of the tennis balls would be much closer in distance to one another...
by Nico Medina
Thu Nov 12, 2020 4:02 am
Forum: Bond Lengths & Energies
Topic: Charge difference/dipole moment for the midterm
Replies: 2
Views: 77

Re: Charge difference/dipole moment for the midterm

I may be wrong but I don't think so. I believe Dr. Lavelle said that it was one of the things that we would not be asked to calculate in this course.
by Nico Medina
Thu Nov 12, 2020 4:01 am
Forum: Bond Lengths & Energies
Topic: Positive Dissociation Energy & Negative Interaction Potential Energy
Replies: 2
Views: 57

Re: Positive Dissociation Energy & Negative Interaction Potential Energy

To add to that, as stated above, dissociation energy is positive because energy is needed to break bonds. However, I like to think of the negative potential energy of the bonds as being a result of the fact that energy is required to break bonds. If potential energy of bonds was positive, energy wou...
by Nico Medina
Thu Nov 12, 2020 3:59 am
Forum: Bond Lengths & Energies
Topic: Interaction Potential Energy
Replies: 2
Views: 47

Re: Interaction Potential Energy

To add to that, the negative potential energy of bonds supports the fact that energy is required to break bonds. If potential energy was positive, energy would be released when bonds are broken.
by Nico Medina
Sun Oct 25, 2020 11:43 pm
Forum: Properties of Light
Topic: Incident Light
Replies: 5
Views: 65

Re: Incident Light

Think of it as the light being manipulated by the experimenters, i.e. kind of like the "independent variable." Hope this helps!
by Nico Medina
Sun Oct 25, 2020 11:41 pm
Forum: Properties of Light
Topic: Midterm Conceptual Questions
Replies: 5
Views: 58

Re: Midterm Conceptual Questions

I was looking for some sort of sheet to look at as well. If anyone has any ideas let me know!
by Nico Medina
Sun Oct 25, 2020 11:32 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect-Work Function
Replies: 4
Views: 37

Re: Photoelectric Effect-Work Function

To add to the previous posts, the work function could also be thought of as the threshold energy. Hope this helps!
by Nico Medina
Sun Oct 25, 2020 11:00 pm
Forum: Properties of Light
Topic: How are you guys studying for the midterm?
Replies: 19
Views: 125

Re: How are you guys studying for the midterm?

I'm focusing on self-testing using the textbook and sapling. Hope this helps!
by Nico Medina
Sun Oct 25, 2020 10:58 pm
Forum: Properties of Light
Topic: Is c always the speed of light?
Replies: 88
Views: 505

Re: Is c always the speed of light?

For our purposes, it will always be the speed of light. Hope this helps!
by Nico Medina
Sun Oct 18, 2020 11:59 pm
Forum: General Science Questions
Topic: Sig Figs
Replies: 14
Views: 91

Re: Sig Figs

Use lowest number of sig figs given in a value by the problem. This is as far out in decimals that we can exactly be "sure" of. Hope this helps!
by Nico Medina
Sun Oct 18, 2020 11:56 pm
Forum: Properties of Light
Topic: Light as a wave
Replies: 3
Views: 60

Re: Light as a wave

In the lectures about photoelectric effect, Dr. Lavelle used an analogy to waves on a beach to illustrate what I think you are asking. If the amplitude was higher (taller waves), then the waves would have more power to, say, knock you down. Experimenters thought, based on the assumption of wave-like...
by Nico Medina
Sun Oct 18, 2020 11:51 pm
Forum: Photoelectric Effect
Topic: Photoelectric experiment vs atomic spectra
Replies: 5
Views: 59

Re: Photoelectric experiment vs atomic spectra

The answer above was phenomenal. For me, I just try to keep it organized in my head by remembering that photoelectric involves EJECTING, and atomic spectra involves EXCITING. Then, I remember everything stated above regarding what each term means. Hope this helps you keep it organized!
by Nico Medina
Sun Oct 18, 2020 11:49 pm
Forum: Properties of Light
Topic: Intensity of light
Replies: 2
Views: 29

Re: Intensity of light

Same as the reply above, I'm not too sure past the fact that intensity would mean amplitude. If someone has an answer to this question it would be great!
by Nico Medina
Sun Oct 18, 2020 11:46 pm
Forum: Properties of Electrons
Topic: Energy per Photon
Replies: 7
Views: 42

Re: Energy per Photon

Yes, if we assume that the electron is ejected with zero kinetic energy. Kinetic energy is the leftover between the energy of each photon and the energy to remove electrons, so if the ejected electrons have no kinetic energy (no excess energy), then yes, energy of photon will equal required energy t...
by Nico Medina
Sun Oct 18, 2020 11:43 pm
Forum: Student Social/Study Group
Topic: How are you studying?
Replies: 203
Views: 1393

Re: How are you studying?

In my opinion, self-testing is key. After taking notes during lecture, complete practice problems or even problems found online in order to gauge the degree to which you are mastering the material. I have found it very useful to use this as a "checkpoint" of sorts before moving on to the n...
by Nico Medina
Fri Oct 09, 2020 4:55 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Molar Mass and Molecular Mass Difference?
Replies: 21
Views: 307

Re: Molar Mass and Molecular Mass Difference?

I believe that they are the same thing, as, by definiton, 1 amu = 1 g/mol. They will be the same for each respective element or compound, but as mentioned before, molar mass (g/mol) is useful for unit conversions. Hope this helps!
by Nico Medina
Fri Oct 09, 2020 4:50 am
Forum: Empirical & Molecular Formulas
Topic: Reading Chemical Structure Diagrams
Replies: 5
Views: 49

Re: Reading Chemical Structure Diagrams

This was my biggest question from this week as well. I used the internet to find the necessary numbers to complete the problem, but was wondering if it was possible to do it any other way. If anyone has any insight it would be greatly appreciated!
by Nico Medina
Fri Oct 09, 2020 4:48 am
Forum: Empirical & Molecular Formulas
Topic: Calculating Atomic Mass of a Molecule
Replies: 9
Views: 81

Re: Calculating Atomic Mass of a Molecule

I was wondering the same thing. Certain periodic tables show the atomic mass of elements rounded to a different decimal place, and I was wondering if there is a "standard" that we should use (i.e. hundredths, thousandths, etc.).
by Nico Medina
Fri Oct 09, 2020 4:43 am
Forum: SI Units, Unit Conversions
Topic: Dimensional Analysis
Replies: 4
Views: 75

Re: Dimensional Analysis

Exactly! As long as the ratio of the conversion remains the same, one can use either unit on "top" and "bottom" to cancel units correctly and arrive at your answer in the units that you need. The "train tracks method" has been an effective way for me to visually underst...
by Nico Medina
Fri Oct 09, 2020 4:37 am
Forum: Significant Figures
Topic: Sig fig guide
Replies: 5
Views: 73

Re: Sig fig guide

Was about to ask the same thing. Thank you to the two that responded with the resources!
by Nico Medina
Thu Oct 08, 2020 12:42 am
Forum: Balancing Chemical Reactions
Topic: Fractions
Replies: 26
Views: 169

Re: Fractions

In general, when finding stoichiometric coefficients for a reaction, you'll always want to make sure that you have the simplest possible ratio (i.e. 2:1 is simpler than 4:2), while also having all whole numbers. That's the rule of thumb that I remember to help myself when balancing chemical equations!

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