Search found 75 matches

by 605110118
Tue Mar 10, 2020 7:27 pm
Forum: Student Social/Study Group
Topic: Final Exam
Replies: 22
Views: 618

Final Exam

Sooooooo how is this exam working now that were gonna be online?
by 605110118
Tue Mar 10, 2020 7:26 pm
Forum: Van't Hoff Equation
Topic: When to use
Replies: 5
Views: 140

When to use

When is this equation used?
by 605110118
Tue Mar 10, 2020 7:25 pm
Forum: First Order Reactions
Topic: Replacing Ln
Replies: 2
Views: 47

Replacing Ln

Could we replace ln with log?
by 605110118
Tue Mar 10, 2020 7:24 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Will We
Replies: 2
Views: 58

Will We

Will we have to calculate Acivation NRG with this equation or just K ?
by 605110118
Tue Mar 10, 2020 7:23 pm
Forum: Zero Order Reactions
Topic: Graphs
Replies: 4
Views: 36

Graphs

How does the graph look for zero order reactions?
by 605110118
Wed Mar 04, 2020 7:21 pm
Forum: Balancing Redox Reactions
Topic: Half rxns
Replies: 27
Views: 467

Half rxns

What differs when balancing acidic vs basic rxns?
by 605110118
Wed Mar 04, 2020 7:18 pm
Forum: Balancing Redox Reactions
Topic: Half reactions
Replies: 6
Views: 91

Re: Half reactions

You add H20 first silly billy!
by 605110118
Wed Mar 04, 2020 7:15 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: How to
Replies: 1
Views: 54

How to

How do you find free NRG using entropy and enthalpy?
by 605110118
Wed Mar 04, 2020 7:13 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Galvanic Cell
Replies: 2
Views: 69

Galvanic Cell

What is a galvanic cell?
by 605110118
Tue Feb 25, 2020 8:54 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: nernst 2
Replies: 3
Views: 63

Re: nernst 2

The units are volts which are J/C
by 605110118
Tue Feb 25, 2020 8:52 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: nerst
Replies: 7
Views: 144

Re: nerst

You must first balance the equation and then use the number of electrons you cancel out as the value for n.
by 605110118
Tue Feb 25, 2020 8:43 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagrams
Replies: 3
Views: 84

Cell Diagrams

How do we choose what solid to put at the beginning?
by 605110118
Tue Feb 25, 2020 8:42 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagrams
Replies: 4
Views: 78

Cell Diagrams

What order do we put the oxidation compounds in the diagram?
by 605110118
Tue Feb 25, 2020 8:38 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Standard Cell Potential
Replies: 4
Views: 75

Standard Cell Potential

What is the difference between E naught and E?
by 605110118
Tue Feb 18, 2020 10:59 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: delta g vs delta g°
Replies: 2
Views: 51

Re: delta g vs delta g°

Delta G naught is for a standard reaction ya silly goose! The normal delta g is for the overall reaction! hope that helps .
by 605110118
Tue Feb 18, 2020 10:44 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Spontaneous
Replies: 10
Views: 246

Re: Spontaneous

well good sir, if the value is negative, it is spontaneous, meaning left over NRG in the form of heat is exuded from the reaction.
by 605110118
Tue Feb 18, 2020 10:25 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs Free naught
Replies: 2
Views: 56

Gibbs Free naught

Why is it that we can include Q and K in the equation? How do you know when to you which?
by 605110118
Tue Feb 18, 2020 10:21 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Adiabatic systems
Replies: 11
Views: 222

Re: Adiabatic systems

Omg! Yes! ALWAYS
by 605110118
Tue Feb 18, 2020 10:20 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Reversible Systems
Replies: 4
Views: 198

Re: Reversible Systems

I'll tell ya bud. Irreversible has a constant pressure (smaller area in curve) and reversible doesn't (bigger area in curve). Hope that helps buddy o !
by 605110118
Fri Feb 14, 2020 2:06 pm
Forum: Ideal Gases
Topic: pv=nrt
Replies: 19
Views: 269

pv=nrt

can you use this equation when at STP?
by 605110118
Fri Feb 14, 2020 2:03 pm
Forum: Calculating Work of Expansion
Topic: Reversible vs Irreversible
Replies: 13
Views: 283

Reversible vs Irreversible

What do these titles determine about one's system, and in turn what equation do you use?
by 605110118
Fri Feb 14, 2020 1:54 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy equation
Replies: 3
Views: 71

Entropy equation

When can I use the delta S= q(rev)/T equation?
by 605110118
Fri Feb 14, 2020 1:52 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Delta H
Replies: 10
Views: 263

Delta H

How do you find the change in enthalpy for a reaction if you aren't given the values?
by 605110118
Fri Feb 14, 2020 1:48 pm
Forum: Phase Changes & Related Calculations
Topic: Equation Choice
Replies: 5
Views: 224

Equation Choice

What defines a phase change and how does that relate to which equation you use?
by 605110118
Thu Feb 06, 2020 4:38 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Topics on the Midterm
Replies: 22
Views: 295

Re: Topics on the Midterm

Is Friday's lecture included in the midterm?
by 605110118
Thu Feb 06, 2020 4:37 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: units
Replies: 4
Views: 64

units

When is it okay to keep the units in g/celsius?
by 605110118
Thu Feb 06, 2020 4:36 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Cp/Cv
Replies: 7
Views: 68

Cp/Cv

If an entropy/delta T problem doesn't specifically state it, do we assume it is at constant pressure or constant volume?
by 605110118
Thu Feb 06, 2020 4:32 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacities
Replies: 2
Views: 61

Heat Capacities

How do we calculate heat capacities for diatomic molecules?
by 605110118
Thu Feb 06, 2020 4:31 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeter
Replies: 5
Views: 56

Calorimeter

What is a calorimeter and how does it relate to heat capacities?
by 605110118
Tue Jan 28, 2020 9:40 am
Forum: Phase Changes & Related Calculations
Topic: Bond Breakage/NRG Stability
Replies: 1
Views: 18

Bond Breakage/NRG Stability

How is it that when bonds are broken and NRG is released, a compound is more stable?
by 605110118
Tue Jan 28, 2020 9:38 am
Forum: Phase Changes & Related Calculations
Topic: State Functions
Replies: 9
Views: 85

State Functions

How would you define state functions, and why is enthalpy not considered one?
by 605110118
Tue Jan 28, 2020 9:35 am
Forum: Phase Changes & Related Calculations
Topic: Enthalpy and Heat
Replies: 6
Views: 66

Re: Enthalpy and Heat

In a way, enthalpy is the amount of heat released or absorbed in a reaction.
by 605110118
Tue Jan 28, 2020 9:34 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Reaction Enthalpies
Replies: 2
Views: 36

Reaction Enthalpies

Will we be provided the enthalpies of each compound when calculating the reaction enthalpies?
by 605110118
Tue Jan 28, 2020 9:31 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Reaction Enthalpies
Replies: 1
Views: 20

Reaction Enthalpies

Are we expected to know how to calcuate using all 3 methods or is there a focus on one over the other?
by 605110118
Wed Jan 22, 2020 8:06 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Polyprotic Acids
Replies: 6
Views: 107

Polyprotic Acids

What is the difference between k1 and k2?
by 605110118
Wed Jan 22, 2020 8:05 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Approximation
Replies: 5
Views: 44

Approximation

What is the threshold for concentrations in which we are allowed to approximate?
by 605110118
Wed Jan 22, 2020 8:05 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Approximation
Replies: 2
Views: 19

Approximation

How do we check if our approximation is correct when finding ph?
by 605110118
Wed Jan 22, 2020 8:03 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Buffers
Replies: 3
Views: 55

Buffers

Will we have to know how to create a buffer for the test this week?
by 605110118
Wed Jan 22, 2020 8:03 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Acids and Bases
Replies: 6
Views: 67

Acids and Bases

Will we have to know about polyprotic acids for the test this week?
by 605110118
Thu Jan 16, 2020 10:06 am
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 291
Views: 136075

Re: Saying Thank You to Dr. Lavelle

Hello sir,
Thank you for all you do. I love the jokes at the end of class :)
by 605110118
Thu Jan 16, 2020 10:05 am
Forum: Student Social/Study Group
Topic: Final Jitters
Replies: 178
Views: 34482

Re: Final Jitters

It helps to take 10 minutes before the exam to focus and breathe and just sit. It's very calming and helpful to remember you're more than a test grade.
by 605110118
Thu Jan 16, 2020 9:53 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quadratic
Replies: 6
Views: 68

Quadratic

Do we have to memorize this equation or will it be given on tests?
by 605110118
Thu Jan 16, 2020 9:53 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Quadratic
Replies: 10
Views: 100

Quadratic

What do you do if the after using the quadratic equation and you get two positive answers?
by 605110118
Thu Jan 16, 2020 9:52 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Factos effecting Equilibrium
Replies: 6
Views: 42

Factos effecting Equilibrium

What factors affect equilibrium? Is it just temperature and pressure?
by 605110118
Thu Jan 09, 2020 3:13 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q
Replies: 10
Views: 101

Q

Can the reactant quotient apply to both concentration and partial pressure, just as K does?
by 605110118
Thu Jan 09, 2020 3:12 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Q
Replies: 4
Views: 38

Q

How does the reactant quotient relates to K?
by 605110118
Thu Jan 09, 2020 3:10 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Purity
Replies: 3
Views: 60

Purity

Does the pureness of products or reactants affect equilibrium constant?
by 605110118
Thu Jan 09, 2020 3:07 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Pressure
Replies: 4
Views: 57

Pressure

Does a higher pressure affect the equilibrium constant?
by 605110118
Thu Jan 09, 2020 3:03 pm
Forum: Ideal Gases
Topic: Ideal Gases
Replies: 3
Views: 35

Ideal Gases

What exactly do we need to know about gases for this unit? Just a basic understanding of PV=nRT?
by 605110118
Tue Nov 12, 2019 6:20 pm
Forum: Student Social/Study Group
Topic: Final Exam
Replies: 10
Views: 191

Final Exam

Is the final exam cumulative?
by 605110118
Tue Nov 12, 2019 6:19 pm
Forum: Hybridization
Topic: Specifics
Replies: 3
Views: 74

Specifics

Should we be able to visually depict the hybridization or is the short cut- way of finding it out enough?
by 605110118
Tue Nov 12, 2019 6:18 pm
Forum: Dipole Moments
Topic: Distinguishing Types
Replies: 1
Views: 38

Distinguishing Types

What is the difference between the different type of dipole-dipole interactions?
by 605110118
Tue Nov 12, 2019 6:17 pm
Forum: Sigma & Pi Bonds
Topic: Drawing
Replies: 6
Views: 69

Drawing

Do we need to know how to draw the shape of different bonds?
by 605110118
Tue Nov 12, 2019 6:17 pm
Forum: Naming
Topic: Naming
Replies: 6
Views: 113

Naming

How important is it to know exactly how to name compounds for the test?
by 605110118
Thu Nov 07, 2019 2:23 pm
Forum: SI Units, Unit Conversions
Topic: Photons
Replies: 3
Views: 165

Photons

Is eV the unit that photons are measured in?
by 605110118
Thu Nov 07, 2019 2:22 pm
Forum: SI Units, Unit Conversions
Topic: Kj
Replies: 6
Views: 190

Kj

Is the conversion for killograms that same that is used for kilojules?
by 605110118
Thu Nov 07, 2019 2:20 pm
Forum: Hybridization
Topic: Pi bonds
Replies: 8
Views: 510

Re: Pi bonds

What is the difference between pi and sigma?
by 605110118
Thu Nov 07, 2019 2:19 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VESPR
Replies: 5
Views: 74

VESPR

Is there a table that has all the names/shapes we need to know? How does everyone know them already ???
by 605110118
Thu Nov 07, 2019 2:18 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VESPR
Replies: 2
Views: 52

VESPR

What is the difference between electronic density shape and molecular shape?
by 605110118
Sun Nov 03, 2019 9:49 pm
Forum: *Black Body Radiation
Topic: Midterm
Replies: 3
Views: 157

Midterm

Do we need to know this concept for the first midterm?
by 605110118
Sun Nov 03, 2019 9:49 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Visualizing orbitals
Replies: 1
Views: 47

Visualizing orbitals

How do you describe the interpretation of atomic orbitals in terms of probability?
by 605110118
Sun Nov 03, 2019 9:48 pm
Forum: *Shrodinger Equation
Topic: Schrodinger's Equation
Replies: 1
Views: 125

Schrodinger's Equation

What is the relationship between Schrodinger's equation (H ψ = E ψ), wave functions, and orbitals?
by 605110118
Sun Nov 03, 2019 9:47 pm
Forum: Properties of Electrons
Topic: Electrons
Replies: 1
Views: 152

Electrons

What are the factors affecting the energy of an electron in a many-electron atom?
by 605110118
Sun Nov 03, 2019 9:46 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Quantum World Guidelines
Replies: 1
Views: 71

Quantum World Guidelines

One of the Quantum World Guidelines states: * With respect to electron transitions that give rise to a UV or visible spectrum: understand the difference between electronic transitions in atomic orbitals (atomic spectroscopy) and electronic transitions in molecular orbitals (molecular spectroscopy). ...
by 605110118
Sun Oct 13, 2019 5:10 pm
Forum: *Shrodinger Equation
Topic: General Question on Schrodinger Equation
Replies: 2
Views: 491

Re: General Question on Schrodinger Equation

Will we need to know how the equation was derived?
by 605110118
Sun Oct 13, 2019 5:04 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Visualizing orbitals
Replies: 1
Views: 35

Visualizing orbitals

Do we need to memorize the order/presdentaion of 1s,2s, orbitals aka figure 2.12 in the textbook?
by 605110118
Sun Oct 13, 2019 5:01 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Electron Configuration
Replies: 5
Views: 107

Electron Configuration

In terms of electron configuration/orbitals, I understand where the s,p,d,and f come from but what defines the number that pretenses it. For example 1s, 2d or 3p, what do those numbers represent and how does one distinguish or assign an element as occupying 2p vs 3p?
by 605110118
Sun Oct 13, 2019 4:56 pm
Forum: *Particle in a Box
Topic: Particle in A box
Replies: 8
Views: 281

Particle in A box

Is the Particle in a box experiment vital to know for the midterm? Or is just a concept that is skimmed over?
by 605110118
Sun Oct 13, 2019 4:55 pm
Forum: *Shrodinger Equation
Topic: Schrodinger's Equation
Replies: 1
Views: 44

Schrodinger's Equation

Do we need to know this equation/its different forms, be able to calculate answers of NRG levels using it?
by 605110118
Wed Oct 02, 2019 10:50 pm
Forum: Ideal Gases
Topic: Module Questions- Balancing Equations
Replies: 4
Views: 149

Module Questions- Balancing Equations

I came across this problem in one of the modules: During a summer camping weekend 4 moles of butane (C4H10) gas were used for cooking. Chose the right balanced equation for the combustion of 4 moles of butane gas. What is the net number of moles of gas produced? What do they mean by net number and h...
by 605110118
Wed Oct 02, 2019 10:49 pm
Forum: Ideal Gases
Topic: Reading the textbook [ENDORSED]
Replies: 153
Views: 105490

Re: Reading the textbook [ENDORSED]

I know that in the course reader it says to read chapter 5 for a review for gases. But every time i try reading the textbook i get intimidated and i stop reading the textbook . Do you guys find it more helpful when you guys read the textbook? Although it's hard to follow at times, I feel like it ca...
by 605110118
Wed Oct 02, 2019 10:46 pm
Forum: Empirical & Molecular Formulas
Topic: Rounding for Formulas
Replies: 8
Views: 146

Re: Rounding for Formulas

I noticed the solution manual often rounds to a whole number when dealing with mass, should we do the same?
by 605110118
Wed Oct 02, 2019 10:44 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical and Molecular Formula Masses
Replies: 5
Views: 128

Re: Empirical and Molecular Formula Masses

In terms of finding the Empirical formula, you wouldn't need molar mass to solve that problem right?
by 605110118
Wed Oct 02, 2019 10:42 pm
Forum: SI Units, Unit Conversions
Topic: Sig figs
Replies: 18
Views: 340

Re: Sig figs

How important is it to know all the rules for sig figs? I feel like I know some basics but not the more specific rules that pertain to addition/subtraction or multiplication/division?

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