Search found 89 matches

by Mya Majewski 1L
Sat Mar 16, 2019 7:28 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy
Replies: 3
Views: 212

Re: Entropy

but when? Is it when an irreversible expansion is occurring that DeltaSTotal=0?
by Mya Majewski 1L
Fri Mar 15, 2019 10:25 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy
Replies: 3
Views: 212

Entropy

When is Stotal=0 and Ssurr=-Ssys?
by Mya Majewski 1L
Fri Mar 15, 2019 1:51 am
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: DeltaS Total
Replies: 2
Views: 218

DeltaS Total

When does DeltaS Total=0, so Ssurr=-Ssys?
by Mya Majewski 1L
Fri Mar 15, 2019 12:09 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pseudo 1st order reaction
Replies: 2
Views: 83

Re: Pseudo 1st order reaction

okay, thank you! is there a homework problem like this?
by Mya Majewski 1L
Thu Mar 14, 2019 11:46 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Solving for Arrhenius Equation
Replies: 2
Views: 50

Solving for Arrhenius Equation

In solving for k in the Arrhenius equation k=Ae^-Ea/RT, my value always equals less than one when the answer key says it should be 6 x 10^8 for 6th edition 15.67? How does one solve this on the calculator?
by Mya Majewski 1L
Thu Mar 14, 2019 9:55 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pseudo 1st order reaction
Replies: 2
Views: 83

Pseudo 1st order reaction

What is a pseudo first order reaction and what homework problem is it used in?
by Mya Majewski 1L
Thu Mar 14, 2019 9:20 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius Equation Variations
Replies: 1
Views: 36

Arrhenius Equation Variations

Is the equation ln(k2/K1)= Ea/R(1-T1-(1-T2) a variation of the Arrhenius equation?
by Mya Majewski 1L
Thu Mar 14, 2019 9:00 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pre-Equilibrium Approach
Replies: 3
Views: 62

Re: Pre-Equilibrium Approach

Also in 15.89 for the 6th edition book.
by Mya Majewski 1L
Wed Mar 13, 2019 11:21 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Kinetic Energy
Replies: 1
Views: 65

Kinetic Energy

Can someone explain how mechanisms can be distinguished using kinetic data/energy?
by Mya Majewski 1L
Wed Mar 13, 2019 10:53 pm
Forum: First Order Reactions
Topic: Time Conversions
Replies: 6
Views: 254

Re: Time Conversions

if your k is in min^-1 and your t is in seconds then what do you do?
by Mya Majewski 1L
Wed Mar 13, 2019 9:22 pm
Forum: First Order Reactions
Topic: Time Conversions
Replies: 6
Views: 254

Time Conversions

For [A]=[A]oe^-kt, there seems to always be conversions associated with the -kt and time, do you convert the k or the t to equal the same units (minutes, seconds, hours) as one another?
by Mya Majewski 1L
Wed Mar 13, 2019 9:20 pm
Forum: First Order Reactions
Topic: Integrated Rate Law
Replies: 2
Views: 53

Integrated Rate Law

How do you know whether to use the exponential decay 1st rate law or the regular integrated rate law? For example, in the 6th edition 15.25.
by Mya Majewski 1L
Wed Mar 13, 2019 8:41 pm
Forum: First Order Reactions
Topic: Integrated Rate Law
Replies: 1
Views: 59

Integrated Rate Law

How do you know whether to use the exponential decay 1st rate law or the regular integrated rate law? For example, in the 6th edition 15.25.
by Mya Majewski 1L
Tue Mar 12, 2019 11:51 pm
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: Flow of electrons
Replies: 2
Views: 212

Flow of electrons

When is the flow of electrons NOT from anode to cathode? In 6th edition 14.91 it flows from cathode to anode?
by Mya Majewski 1L
Fri Mar 08, 2019 2:43 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Rate Order Graphs
Replies: 3
Views: 78

Re: Rate Order Graphs

look at what the x-axis and y-axis are and if its linear, its likely that order. For example, ln[A] vs. t if thats linear, its likely 1st order. If you search on Google there are super helpful charts that break down 1st, 2nd, and zero order in terms of linear plot to determine the rate order and the...
by Mya Majewski 1L
Fri Mar 08, 2019 2:36 pm
Forum: Zero Order Reactions
Topic: Determining Rate Orders
Replies: 3
Views: 56

Re: Determining Rate Orders

You look at when one reactant changes and the other doesn't or stays the same (lets say the one reactant doubles). Then, you compare this to the corresponding reaction rate and if that changes (lets say it doubles for instance). So, you will be left with 2^x (2 raised to the X equals the rate)=2 (ra...
by Mya Majewski 1L
Fri Mar 08, 2019 2:29 pm
Forum: Zero Order Reactions
Topic: Enzymatic Reactions
Replies: 2
Views: 57

Enzymatic Reactions

Can someone explain why enzymatic/catalytic reactions are considered zero order?
by Mya Majewski 1L
Fri Mar 08, 2019 2:29 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Definition of 1st, 2nd, and zero order
Replies: 1
Views: 39

Definition of 1st, 2nd, and zero order

What do the definitions conceptually of the order of the reactions mean? Does the reaction rate increase from 0-->2nd order?
by Mya Majewski 1L
Thu Feb 28, 2019 11:29 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: finding DeltaG
Replies: 6
Views: 112

Re: finding DeltaG

G=-nFE
G=H-TS
G=-RTlnK
G=-RTlnK + RTlnQ
etc.
You can combine these and switch out variables but it depends what you are given.
by Mya Majewski 1L
Thu Feb 28, 2019 11:25 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagrams
Replies: 3
Views: 81

Re: Cell Diagrams

A lot of times Ag(s) and Ni(s) will be used as electrodes too.
by Mya Majewski 1L
Thu Feb 28, 2019 11:24 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: H+ in cell diagrams
Replies: 5
Views: 108

Re: H+ in cell diagrams

H+ and OH- both being aqueous are used in the cell diagram!
Water is NOT used
by Mya Majewski 1L
Thu Feb 28, 2019 11:23 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Finding n for Galvanic Cell Equations
Replies: 2
Views: 47

Re: Finding n for Galvanic Cell Equations

Yes, you must make sure the coefficients and amount of R and P is balances as well as the charge
by Mya Majewski 1L
Thu Feb 28, 2019 12:12 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Test #2
Replies: 1
Views: 58

Test #2

In the 6th edition, what is the last problem that will be on the exam (before Nernst questions)?
by Mya Majewski 1L
Thu Feb 28, 2019 12:06 am
Forum: Balancing Redox Reactions
Topic: Oxidation Numbers
Replies: 3
Views: 70

Oxidation Numbers

How do we know which elements have an oxidation number of 0 like O2 and Cl2? Is there a trick to knowing which elements have an oxidation state of 0?
by Mya Majewski 1L
Wed Feb 27, 2019 9:56 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Flow of electrons
Replies: 4
Views: 87

Re: Flow of electrons

do electrons also flow from anode to cathode in electrolytic cells?
by Mya Majewski 1L
Wed Feb 27, 2019 9:52 pm
Forum: Balancing Redox Reactions
Topic: Basic Solutions
Replies: 5
Views: 87

Re: Basic Solutions

In the textbook they give examples how to balance acidic and basic solutions within the electrochemistry chapter
by Mya Majewski 1L
Wed Feb 27, 2019 9:50 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student [ENDORSED]
Replies: 143
Views: 84019

Re: Advice from a Medical Student [ENDORSED]

MCAT covers 14A-->D as well as biochemistry
by Mya Majewski 1L
Wed Feb 27, 2019 9:49 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 2
Views: 65

Cell Diagram

When writing cell diagrams, how do you know which goes closest to the electrode and which is closest to the salt bridge? For instance, when you have two things separated by a comma like Fe3+ and Fe2+, which one is closest to electrode when drawing cell diagrams?
by Mya Majewski 1L
Tue Feb 26, 2019 11:51 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: E^o(cell) vs. Ecell
Replies: 6
Views: 113

E^o(cell) vs. Ecell

Whats the difference between the two?
by Mya Majewski 1L
Thu Feb 21, 2019 1:55 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Flow of electrons
Replies: 4
Views: 87

Flow of electrons

Do electrons always flow from anode to cathode?
by Mya Majewski 1L
Thu Feb 21, 2019 1:52 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Galvanic/Voltaic Cells
Replies: 4
Views: 96

Re: Galvanic/Voltaic Cells

They are synonymous, however, once we get to it there is a difference between galvanic and electrolytic
by Mya Majewski 1L
Thu Feb 21, 2019 1:51 pm
Forum: Balancing Redox Reactions
Topic: Oxidation States
Replies: 10
Views: 150

Oxidation States

As stated in Lecture, Mn has a +7 charge- is their a table we should memorize in order to determine oxidation states?
by Mya Majewski 1L
Tue Feb 12, 2019 2:33 am
Forum: Phase Changes & Related Calculations
Topic: Specific Heat of Ice
Replies: 3
Views: 136

Specific Heat of Ice

When do you use specific heat capacity of ice (2.03)? I have seen with problems in terms of ice melting in water we use the specific heat of water (4.184). Therefore, when do we use the ice specific heat?
by Mya Majewski 1L
Tue Feb 12, 2019 2:23 am
Forum: Administrative Questions and Class Announcements
Topic: DOWNLOAD SESSION WORKSHEETS HERE - Sun 7-9PM (Karen)
Replies: 179
Views: 7776

Re: DOWNLOAD SESSION WORKSHEETS HERE - Sun 7-9PM (Karen)

for question 8, isn't the answer going to be Kb x 3^8?
by Mya Majewski 1L
Mon Feb 11, 2019 11:45 pm
Forum: Phase Changes & Related Calculations
Topic: Lyndon MIdterm question
Replies: 1
Views: 87

Lyndon MIdterm question

Could someone please post the worked out answers to questions 3A and B please from the Lyndon review, thank you!
by Mya Majewski 1L
Mon Feb 11, 2019 1:53 am
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Isothermal
Replies: 1
Views: 53

Isothermal

In isothermal reactions, internal energy is always equal to 0 so -q=w?
by Mya Majewski 1L
Sun Feb 10, 2019 7:01 pm
Forum: Phase Changes & Related Calculations
Topic: Phase change equation
Replies: 1
Views: 52

Phase change equation

For 6th edition 8.85 or a phase change in general, do you use q=nDeltaH or deltaH=nDeltaH because for this phase change it uses deltaH=n x deltaHfus?
by Mya Majewski 1L
Sun Feb 10, 2019 6:53 pm
Forum: Phase Changes & Related Calculations
Topic: heat units
Replies: 3
Views: 81

heat units

Using the equation q=nCdelta T where n is in g, C is in J/Cg and Temperature is in Celsius, isn't the heat unit supposed to be J and NOT kj?
by Mya Majewski 1L
Sat Feb 09, 2019 11:03 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeters
Replies: 2
Views: 59

Calorimeters

For 8.23, why do we ignore the number of moles in q=nCdeltaT?
by Mya Majewski 1L
Fri Feb 08, 2019 12:04 am
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Degeneracy
Replies: 1
Views: 43

Degeneracy

Can someone explain exactly what degeneracy means? And how to calculate it?
by Mya Majewski 1L
Fri Feb 08, 2019 12:02 am
Forum: Administrative Questions and Class Announcements
Topic: Midterm
Replies: 2
Views: 137

Re: Midterm

Most Likely not but knowing how to derive it is important in understanding the concepts and how the variables connect to one another
by Mya Majewski 1L
Fri Feb 08, 2019 12:01 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Internal energy
Replies: 1
Views: 50

Internal energy

How do you know determine if internal energy equals 0?
by Mya Majewski 1L
Thu Jan 31, 2019 2:42 pm
Forum: Calculating Work of Expansion
Topic: Change in internal energy
Replies: 3
Views: 63

Re: Change in internal energy

Have we even went over internal energy in class yet (Delta U)?
by Mya Majewski 1L
Thu Jan 31, 2019 2:39 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Work Question
Replies: 4
Views: 78

Re: Work Question

To add, I think of Work being the ability to do something. For example, if the piston is moving out, that means the gas (system) is doing work because it is physically pushing the piston out of place.
by Mya Majewski 1L
Tue Jan 29, 2019 2:21 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Enthalpy
Replies: 4
Views: 75

Re: Enthalpy

Wait you said enthalpy of reaction for both, which one is which again?
by Mya Majewski 1L
Tue Jan 29, 2019 2:20 pm
Forum: Phase Changes & Related Calculations
Topic: Test #1
Replies: 11
Views: 206

Test #1

Do we get our Test #1 back in discussion section this week?
by Mya Majewski 1L
Tue Jan 29, 2019 12:49 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Method #3
Replies: 2
Views: 73

Method #3

I am enrolled in the 11am lecture, but on Monday I had to go to the 1pm and we didn't finish covering Method #3 on Friday in the 11am, could explain explain this one to me and maybe send a picture of the notes from lecture? Thanks!
by Mya Majewski 1L
Tue Jan 29, 2019 12:48 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Cp vs. Csp
Replies: 2
Views: 47

Cp vs. Csp

How do you know which one to use and what is the difference between them?
by Mya Majewski 1L
Tue Jan 29, 2019 12:45 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Enthalpy
Replies: 4
Views: 75

Enthalpy

What is the difference between the Enthalpy of Reaction and the Enthalpy of Formation?
by Mya Majewski 1L
Thu Jan 24, 2019 11:27 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Test 1
Replies: 9
Views: 175

Re: Test 1

to correct the equation above pOH +pH=14 NOT pkw
by Mya Majewski 1L
Thu Jan 24, 2019 11:11 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 5%
Replies: 10
Views: 185

Re: 5%

So basically the "x" you calculate needs to be within 5% of the initial concentration so do x/initial x 100%
by Mya Majewski 1L
Thu Jan 24, 2019 11:09 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: pKa and pH
Replies: 2
Views: 62

Re: pKa and pH

No, pka=-log Ka and pH=-log(H30+) so the equations both involve a negative log (the "p" signals a negative log) Basically they are related but the pH tells you the amount of H atoms in a solution and the pka is more specific in letting us know how acidic something is (the lower the pka the...
by Mya Majewski 1L
Thu Jan 24, 2019 12:27 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Salts
Replies: 1
Views: 59

Salts

Within the 6th edition, which problems start with using salts?
by Mya Majewski 1L
Wed Jan 23, 2019 10:40 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Strong Acids and Bases
Replies: 3
Views: 68

Strong Acids and Bases

Since strong acids and bases completely dissociate in a reaction, we do NOT need to do an ICE table and therefore we just need to look at the moles of OH or H30 on the product side and multiple that by the initial conc of the acid or base?
by Mya Majewski 1L
Wed Jan 23, 2019 10:23 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Specific Notation
Replies: 5
Views: 115

Re: Specific Notation

pay attention if the problem gives you Kc or Kp, then you know which to use!
by Mya Majewski 1L
Tue Jan 22, 2019 6:09 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Salts
Replies: 4
Views: 124

Salts

How do you know when something is a salt? To add, how does a salt affect the ICE Tables because in lecture the product sides were NOT at 0??
by Mya Majewski 1L
Tue Jan 22, 2019 6:07 pm
Forum: Ideal Gases
Topic: Outline 1 Bullet
Replies: 2
Views: 77

Re: Outline 1 Bullet

Lavelle mentioned if you are rusty on ideal gases to read up on them in the book! The textbook explains ideal gases well in the concepts of chemical equilibrium.
by Mya Majewski 1L
Tue Jan 22, 2019 6:01 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Quiz #1 This friday
Replies: 5
Views: 167

Quiz #1 This friday

I was wondering what the best way was to prepare for the quiz this week? To add, what is the format of the quiz and the quiz will be during discussion sections correct?
by Mya Majewski 1L
Tue Jan 15, 2019 2:16 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE Tables [ENDORSED]
Replies: 11
Views: 204

ICE Tables [ENDORSED]

How do you know when to use an ICE Table? Is it ALWAYS the case that the products start at 0?
by Mya Majewski 1L
Mon Jan 14, 2019 6:59 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Changes in pressure
Replies: 2
Views: 64

Changes in pressure

According to 11.69, an increase in pressure of the product causes the partial pressure of a reactant to decrease. How is this? Is there a general rule in predicting how pressure influences the changes in equilibria
by Mya Majewski 1L
Mon Jan 14, 2019 5:55 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Solids and Liquids in K
Replies: 4
Views: 83

Re: Solids and Liquids in K

^as mentioned above, pure solids and liquids are not involved in any K expression. HOWEVER, H20 in aqueous or gas form is used in equilibrium expressions (refer to the first 10 problems in Homework in chapter 11)
by Mya Majewski 1L
Thu Jan 10, 2019 6:05 pm
Forum: Ideal Gases
Topic: Temperature Units
Replies: 4
Views: 48

Re: Temperature Units

Even though gases use STP at 273K it will primarily depend on the question? Or you just have to know if you're given gases to use 273K?
by Mya Majewski 1L
Thu Jan 10, 2019 6:03 pm
Forum: Ideal Gases
Topic: units for PV=nRT
Replies: 5
Views: 108

Re: units for PV=nRT

R is the universal gas constant that can be in many different variations in terms of units. However, for this class, I believe we will be primarily focusing on R= 8.3145 J/mol·K since T in PV=nRT will be in Kelvin as Dr. Lavelle stated in class. Hope this helps!
by Mya Majewski 1L
Thu Jan 10, 2019 5:57 pm
Forum: Ideal Gases
Topic: Temperature Units
Replies: 4
Views: 48

Temperature Units

How do you know whether to use K=273 K (STP) or K=298 K when calculating PV=nRT?
by Mya Majewski 1L
Thu Jan 10, 2019 5:51 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Partial Pressures Definition
Replies: 2
Views: 44

Partial Pressures Definition

Can someone give the definition of partial pressures and why its important to use partial pressures for gases and concentration for everything else?
by Mya Majewski 1L
Thu Mar 10, 2016 6:15 pm
Forum: *Carboxylic Acids
Topic: Organic Naming
Replies: 1
Views: 548

Organic Naming

For organic naming with functional groups. Ether is the one one that is named in the beginning of the molecule?
by Mya Majewski 1L
Wed Mar 02, 2016 1:51 am
Forum: *Free Energy of Activation vs Activation Energy
Topic: Temp. and Activation Energy
Replies: 1
Views: 269

Temp. and Activation Energy

Whats the relationship between Temperature and Activation Energy? If one decreases what happens to the other? If one increases what happens to the other?
by Mya Majewski 1L
Mon Feb 29, 2016 8:34 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Cis/Trans
Replies: 3
Views: 429

Cis/Trans

Can someone explain the main differences between a cis and trans isomer? How could you tell looking at a molecule whether it is one or the other?
by Mya Majewski 1L
Thu Feb 25, 2016 5:28 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Finding K
Replies: 2
Views: 293

Finding K

When given the K of the reverse reaction and concentrations of the forward. How do you find the overall K? Also, how do you know whether the reaction is favoring the products or the reactants?
by Mya Majewski 1L
Thu Feb 25, 2016 5:25 pm
Forum: *Alkanes
Topic: Nucleophiles
Replies: 1
Views: 213

Nucleophiles

What makes a molecule a more ambident nucleophile?
by Mya Majewski 1L
Fri Feb 19, 2016 6:40 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Formal Charges
Replies: 2
Views: 308

Re: Formal Charges

I believe you would use formal charge to find out if it becomes positive or negatively charged.
by Mya Majewski 1L
Fri Feb 19, 2016 6:37 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Reverse reactions
Replies: 1
Views: 306

Reverse reactions

If given concentrations of a reaction, and the balanced reaction. How do you find K and if the reaction is going forward or reverse?
by Mya Majewski 1L
Tue Feb 09, 2016 2:18 pm
Forum: Calculating Work of Expansion
Topic: Calc heat functions
Replies: 1
Views: 275

Calc heat functions

When do you know when to use q=-q, mcdeltaT=-mcdeltaT, or q=ndeltaH + mcdeltaT????
by Mya Majewski 1L
Wed Feb 03, 2016 10:06 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Redox reactions
Replies: 2
Views: 358

Redox reactions

How do you determine if a redox reaction is favorable?
by Mya Majewski 1L
Mon Jan 25, 2016 7:39 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Enthalpy, internal energy, and entropy equations
Replies: 1
Views: 314

Enthalpy, internal energy, and entropy equations

What equations do we need to know for the quiz this week that aren't on the equations sheet given? In other words, what concepts do we fully need to understand that will not be given on the sheet?
by Mya Majewski 1L
Tue Jan 19, 2016 11:42 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeters Example
Replies: 1
Views: 208

Calorimeters Example

Can someone go over the difference between the two calorimeters that Lavelle explained in class?
by Mya Majewski 1L
Fri Jan 15, 2016 7:46 pm
Forum: Calculating Work of Expansion
Topic: Integrals
Replies: 2
Views: 436

Integrals

For calculating the work of expansion how do you properly solve an integral? I haven't had CALC in awhile and I forgot how to mathematically solve it.
by Mya Majewski 1L
Fri Jan 08, 2016 10:31 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacity and Specific Heat
Replies: 1
Views: 231

Heat Capacity and Specific Heat

I know we went over these two topics in lecture today, but how exactly do these to correlate with enthalpy? In other words, what does specific heat and heat capacity tell us?
by Mya Majewski 1L
Mon Nov 30, 2015 8:59 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Salts in Solutions
Replies: 2
Views: 318

Salts in Solutions

How can you decipher what salts are involved in a certain reaction? Like how can you determine the outcomes or products within a buffer?
by Mya Majewski 1L
Mon Nov 16, 2015 10:21 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE BOX
Replies: 1
Views: 256

ICE BOX

Is there a proper way to finding the C part in the ICE box. I always get confused when trying to find this part.
by Mya Majewski 1L
Sun Nov 15, 2015 11:05 pm
Forum: Naming
Topic: Naming Coordination Compounds
Replies: 1
Views: 215

Naming Coordination Compounds

Can somebody give a list of steps in naming coordination compounds? How do you know the oxidation numbers for each metal ion?
by Mya Majewski 1L
Tue Nov 03, 2015 3:16 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Molecular orbital theory
Replies: 1
Views: 312

Molecular orbital theory

If you are given CO and you are told to do the molecular orbital theory for it, do you do the one where Z>8 or Z<8???
by Mya Majewski 1L
Fri Oct 30, 2015 6:16 pm
Forum: Hybridization
Topic: How to Determine Electron Density
Replies: 4
Views: 1065

How to Determine Electron Density

How do you calculate the number of electron density regions?
by Mya Majewski 1L
Mon Oct 26, 2015 4:05 pm
Forum: Lewis Structures
Topic: Lone Pairs
Replies: 1
Views: 203

Lone Pairs

When doing a Lewis Structure, how do you know if an element has a lone pair or more than one lone pair?
by Mya Majewski 1L
Thu Oct 22, 2015 8:12 pm
Forum: Lewis Structures
Topic: Bonds
Replies: 2
Views: 393

Bonds

When making a Lewis Structure, how do you know whether to put a single, double, or triple bond? I know you look at the valence electrons but I get confused when deciding how many dots are around the element
by Mya Majewski 1L
Wed Oct 14, 2015 9:07 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Finding Quantum Numbers
Replies: 2
Views: 458

Finding Quantum Numbers

How do you know what the m(l) quantum number for an element is?
by Mya Majewski 1L
Tue Oct 06, 2015 5:33 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Elements with +2 charge
Replies: 1
Views: 387

Elements with +2 charge

In the review problems for E:23,

How do you calculate the amount (in moles) Cu^2+ ions in 3.00 g of CuBr2?
by Mya Majewski 1L
Fri Oct 02, 2015 12:27 pm
Forum: Properties of Light
Topic: Question: Wave Model vs. Photon Model of Light
Replies: 7
Views: 2022

Re: Question: Wave Model vs. Photon Model of Light

I believe that the photon model of light showed that light has both wave and particle properties. Thus, this model shows that because it is specifically about the photon of light hitting the medal which emits an electron. I hope this helps!

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