Search found 58 matches

by Naana Boateng 1I
Fri Mar 16, 2018 4:39 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: porous disk
Replies: 3
Views: 145

Re: porous disk

in a cell diagram?
by Naana Boateng 1I
Fri Mar 16, 2018 4:38 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: porous disk
Replies: 3
Views: 145

porous disk

What is a porous disk?
by Naana Boateng 1I
Fri Mar 16, 2018 4:29 pm
Forum: Balancing Redox Reactions
Topic: Basic conditions with OH
Replies: 3
Views: 135

Re: Basic conditions with OH

awesome! thank you!
by Naana Boateng 1I
Fri Mar 16, 2018 3:08 pm
Forum: Balancing Redox Reactions
Topic: increasing pH
Replies: 1
Views: 99

increasing pH

why would increasing the pH of the solution increase the cell potential?
by Naana Boateng 1I
Fri Mar 16, 2018 3:06 pm
Forum: Balancing Redox Reactions
Topic: Basic conditions with OH
Replies: 3
Views: 135

Basic conditions with OH

This is probably from 14A, but how can you get the concentration of OH and the pOH, when you are given the pH value ?
by Naana Boateng 1I
Fri Mar 16, 2018 3:04 pm
Forum: Calculating Work of Expansion
Topic: Conversion of R
Replies: 7
Views: 393

Re: Conversion of R

what if pressure was not given to you? Would you use 8.314?
by Naana Boateng 1I
Fri Mar 16, 2018 2:15 pm
Forum: Calculating Work of Expansion
Topic: Conversion of R
Replies: 7
Views: 393

Conversion of R

When using the Pv=nRt formula, do you represent R as 8.314 or 8.206 x10^-2?
by Naana Boateng 1I
Sun Mar 11, 2018 5:40 pm
Forum: Balancing Redox Reactions
Topic: redox
Replies: 6
Views: 257

redox

How do you determine the oxidizing and reducing agent of a reaction?
by Naana Boateng 1I
Sun Mar 11, 2018 3:10 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Elementary Step
Replies: 4
Views: 124

Elementary Step

What exactly is the definition of an elementary step? How does it relate to the concept of rate laws?
by Naana Boateng 1I
Sat Mar 03, 2018 2:57 pm
Forum: General Rate Laws
Topic: rate law
Replies: 3
Views: 131

rate law

How do you determine the rate law for a reaction with more than one reactant?
by Naana Boateng 1I
Sat Mar 03, 2018 2:52 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Forward/Reverse [ENDORSED]
Replies: 1
Views: 91

Forward/Reverse [ENDORSED]

How is the equilibrium constant related to the forward and reverse rate constants of elementary reactions contributing to an overall reaction?
by Naana Boateng 1I
Sat Mar 03, 2018 2:51 pm
Forum: General Rate Laws
Topic: half-life
Replies: 8
Views: 281

half-life

What is the purpose of determining a half life?
by Naana Boateng 1I
Sat Mar 03, 2018 2:49 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Learning Models [ENDORSED]
Replies: 1
Views: 100

Learning Models [ENDORSED]

How does the collision model and the activated complex model account for the temperature dependence of reactions ?
by Naana Boateng 1I
Tue Feb 20, 2018 6:48 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: homework question
Replies: 1
Views: 132

homework question

In homework question 14.33, why do they change the sign of the given gibbs free energy to negative?
by Naana Boateng 1I
Tue Feb 20, 2018 4:59 pm
Forum: Balancing Redox Reactions
Topic: oxidation
Replies: 4
Views: 196

oxidation

What is the oxidation state of o2 ? is it neutral?
by Naana Boateng 1I
Mon Feb 19, 2018 12:45 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Equilibrium constant
Replies: 3
Views: 180

Equilibrium constant

what is the relationship between standard cell potential and equilibrium constant of a reaction.?
by Naana Boateng 1I
Sun Feb 18, 2018 9:35 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: n
Replies: 3
Views: 169

n

How do you calculate the value of n when finding gibbs free energy when given a chemical equation?
by Naana Boateng 1I
Sun Feb 18, 2018 7:01 pm
Forum: Balancing Redox Reactions
Topic: Balancing
Replies: 3
Views: 149

Balancing

I'm having a bit trouble adding how many electrons to a redox or oxidation half reaction.. Is there a specific method I use or an easier way to find the net charge of electrons?
by Naana Boateng 1I
Sat Feb 10, 2018 9:19 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Third law
Replies: 3
Views: 141

Third law

What do you need to know about the third law of thermodynamics
by Naana Boateng 1I
Sat Feb 10, 2018 9:19 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Gibbs free
Replies: 5
Views: 217

Gibbs free

What is the difference between Gibbs free energy and enthalpy ?
by Naana Boateng 1I
Sat Feb 10, 2018 9:18 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy
Replies: 3
Views: 135

Entropy

What equations do you need to solve entropy problems
by Naana Boateng 1I
Tue Feb 06, 2018 8:05 pm
Forum: Balancing Redox Reactions
Topic: oxidation
Replies: 4
Views: 174

oxidation

How do you find the oxidation state number?
by Naana Boateng 1I
Tue Feb 06, 2018 8:04 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: exothermic
Replies: 5
Views: 221

exothermic

If a flask turns cold, can you automatically assume that the reaction is exothermic?
by Naana Boateng 1I
Tue Feb 06, 2018 8:03 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: formula
Replies: 3
Views: 142

formula

When do we use the delta s= qrev/t formula?
by Naana Boateng 1I
Sat Jan 27, 2018 6:34 pm
Forum: Calculating Work of Expansion
Topic: equation
Replies: 2
Views: 116

equation

When do you use w=-pdeltav equation? and when do you use the equation that includes the gas constant
by Naana Boateng 1I
Fri Jan 26, 2018 1:01 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Reversible and Irreversible
Replies: 3
Views: 152

Reversible and Irreversible

Is there an easier explanation to describe when a system is reversible or irreversible?
by Naana Boateng 1I
Wed Jan 24, 2018 6:50 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimetry
Replies: 4
Views: 172

Calorimetry

In calculating calorimetry problems, do you need to change Celcius to Kelvin in the initial and final temperatures? Or can you leave it as either or ?
by Naana Boateng 1I
Tue Jan 16, 2018 8:59 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: First Law
Replies: 2
Views: 135

First Law

Can someone explain how the knowledge of the first law will help us in calculations?
by Naana Boateng 1I
Tue Jan 16, 2018 8:57 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: reaction enthalpies
Replies: 1
Views: 78

reaction enthalpies

How do you find how much heat is absorbed in a reaction?
by Naana Boateng 1I
Tue Jan 16, 2018 8:56 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: internal energy
Replies: 5
Views: 178

internal energy

How do you find the change of internal energy?
by Naana Boateng 1I
Sat Jan 13, 2018 4:32 pm
Forum: Phase Changes & Related Calculations
Topic: Methods of Enthalpy
Replies: 8
Views: 310

Re: Methods of Enthalpy

Possibly, it depends on the type of question that Lavelle puts on his test, and whether or not there will be an A, B or C. Just be prepared for anything at this point.
by Naana Boateng 1I
Sat Jan 13, 2018 4:28 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Specific Heat
Replies: 2
Views: 108

Specific Heat

In order to find the specific heat capacity, is there a go to formula that I need to use to solve the problems in the homework?
by Naana Boateng 1I
Sat Jan 13, 2018 4:27 pm
Forum: Administrative Questions and Class Announcements
Topic: Re-registering
Replies: 1
Views: 126

Re-registering

Ive recently reregistered my account so that aligns with my discussion in 14B, but my posts and number of posts from 14A still show on my account. Is that okay?
by Naana Boateng 1I
Sat Jan 13, 2018 4:20 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond enthalpies
Replies: 2
Views: 113

Bond enthalpies

What exactly is the purpose for determining the specific bond enthalpy of a chemical reaction? What is the specific purpose?
by Naana Boateng 1I
Sat Dec 09, 2017 9:39 pm
Forum: Conjugate Acids & Bases
Topic: Protanation
Replies: 2
Views: 273

Protanation

What is acid/base protonation ?
by Naana Boateng 1I
Sat Dec 09, 2017 9:38 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Conjugate seesaw
Replies: 3
Views: 314

Conjugate seesaw

What exactly is the conjugate seesaw again?
by Naana Boateng 1I
Sat Dec 02, 2017 10:31 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: difference in acids
Replies: 3
Views: 257

difference in acids

Is a Bronsted acid/base the opposite of a Lewis acid/base?
by Naana Boateng 1I
Sat Dec 02, 2017 10:30 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: strength
Replies: 2
Views: 180

strength

How can you calculate which acid/base is the stronger acid/base?
by Naana Boateng 1I
Fri Nov 24, 2017 5:19 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination number [ENDORSED]
Replies: 3
Views: 229

Coordination number [ENDORSED]

When finding the coordination number, do you have to always draw the lewis structure to find the number of bonds? or is there a simpler way?
by Naana Boateng 1I
Fri Nov 24, 2017 5:18 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Oxidation number
Replies: 1
Views: 97

Oxidation number

How do you find the oxidation number in coordination compounds?
by Naana Boateng 1I
Sun Nov 19, 2017 9:43 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: MOT
Replies: 2
Views: 189

MOT

Will we be covering Molecular orbital theory in lecture?
by Naana Boateng 1I
Sun Nov 19, 2017 9:41 pm
Forum: Hybridization
Topic: Hybridization
Replies: 2
Views: 133

Hybridization

To find hybridization, do you always have to draw a Lewis Structure?
by Naana Boateng 1I
Tue Nov 07, 2017 7:17 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reactant
Replies: 3
Views: 257

Limiting Reactant

Is it correct to assume that the limiting reactant is always the value that has the smallest amount of moles out of the two that are being compared?
by Naana Boateng 1I
Mon Nov 06, 2017 9:59 am
Forum: Ionic & Covalent Bonds
Topic: Characterization [ENDORSED]
Replies: 2
Views: 160

Characterization [ENDORSED]

How do you tell when a compound has more ionic character or covalent character?
by Naana Boateng 1I
Sat Nov 04, 2017 11:04 pm
Forum: Lewis Structures
Topic: Formal Charge
Replies: 1
Views: 94

Formal Charge

For finding the formal charge, would it be okay to just do valence electrons - the total number of electrons?
by Naana Boateng 1I
Thu Nov 02, 2017 7:16 pm
Forum: Lewis Structures
Topic: Expanded rules
Replies: 4
Views: 153

Expanded rules

How do you know which elements can be used as an expanded octet when forming a Lewis Structure?
by Naana Boateng 1I
Sat Oct 28, 2017 4:01 pm
Forum: Trends in The Periodic Table
Topic: Electron affinity [ENDORSED]
Replies: 4
Views: 253

Electron affinity [ENDORSED]

How does electron affinity affect the elements/ electrons of an element ?
by Naana Boateng 1I
Thu Oct 26, 2017 8:47 pm
Forum: Trends in The Periodic Table
Topic: Periodic Trends
Replies: 2
Views: 173

Periodic Trends

When a question asks, "determine the highest SECOND ionization energy" how do you determine that? Its different from determining which ionization energy is greater.
by Naana Boateng 1I
Sat Oct 21, 2017 9:07 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Solving
Replies: 2
Views: 145

Solving

When solving for the Heisenberg uncertainty, does the greater than or equal to sign turn into just an equal sign?
by Naana Boateng 1I
Mon Oct 16, 2017 8:43 pm
Forum: DeBroglie Equation
Topic: Conversions
Replies: 3
Views: 221

Conversions

When converting g to kg, do we just multiply the grams by 10^-3 ?
by Naana Boateng 1I
Sun Oct 15, 2017 11:50 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Upcoming Test
Replies: 5
Views: 316

Re: Upcoming Test

Okay, also, for homework due in our discussion, will it be covering Chapter 2 or Chapter 3. Since, we have yet to start chapter 2?
by Naana Boateng 1I
Sun Oct 15, 2017 4:23 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Upcoming Test
Replies: 5
Views: 316

Upcoming Test

Should we be familiar with Uncertainty problems for the test this coming week?
by Naana Boateng 1I
Tue Oct 10, 2017 7:56 pm
Forum: Properties of Light
Topic: Calculating the wavelength of light [ENDORSED]
Replies: 5
Views: 343

Calculating the wavelength of light [ENDORSED]

Exactly when do you use the equation E= hc/ lambda (wavelength) ?
by Naana Boateng 1I
Sun Oct 08, 2017 6:56 pm
Forum: Properties of Light
Topic: Conversions
Replies: 3
Views: 196

Conversions

How would you convert m to nm when finding the wavelength?
by Naana Boateng 1I
Sun Oct 08, 2017 6:41 pm
Forum: Properties of Light
Topic: Calculating the wavelength of light
Replies: 2
Views: 139

Calculating the wavelength of light

In example 1.1 of "The Quantum World", the book uses 2.998 x 10^8 as the speed of light to calculate the wavelength, however, the book gives the speed of light as 3 x 10^8 . Which one is sufficient?
by Naana Boateng 1I
Thu Oct 05, 2017 11:34 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reactant info [ENDORSED]
Replies: 6
Views: 380

Limiting Reactant info [ENDORSED]

When asking for the limiting reagent, is the smallest amount of moles that you get of a certain compound always going to be the limiting reagent?
by Naana Boateng 1I
Tue Oct 03, 2017 2:34 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reactant- Excess
Replies: 4
Views: 250

Limiting Reactant- Excess

When a question asks for a limiting reactant or reagent, does finding the excess mean the other substance that has more product or is there another formula?
by Naana Boateng 1I
Tue Oct 03, 2017 2:31 pm
Forum: Balancing Chemical Reactions
Topic: Combustion Question
Replies: 9
Views: 521

Re: Combustion Question

Yes, combustion (anything that burns or is burning) always has the product of carbon dioxide and water.

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