Search found 54 matches

by marcus lin 1E
Sun Mar 17, 2019 9:14 am
Forum: Zero Order Reactions
Topic: Zero order reaction
Replies: 8
Views: 48

Zero order reaction

How do we determine if a reactant is zero order?
by marcus lin 1E
Sun Mar 17, 2019 9:13 am
Forum: Second Order Reactions
Topic: Plotting second order reactions
Replies: 3
Views: 51

Plotting second order reactions

How do we plot a second order reaction on a graph to get a straight line?
by marcus lin 1E
Sun Mar 17, 2019 9:12 am
Forum: General Rate Laws
Topic: fast step before slow step
Replies: 2
Views: 40

fast step before slow step

Why do we have to assume that the slow step comes after the fast step?
by marcus lin 1E
Sun Mar 17, 2019 9:12 am
Forum: General Rate Laws
Topic: Slow elementary step
Replies: 2
Views: 30

Slow elementary step

Why is the slow step the rate determining step?
by marcus lin 1E
Sun Mar 17, 2019 9:10 am
Forum: Balancing Redox Reactions
Topic: How to balance half reaction
Replies: 5
Views: 46

How to balance half reaction

How do we use OH- to balance out half reactions in alkaline solutions?
by marcus lin 1E
Sun Mar 17, 2019 9:10 am
Forum: Balancing Redox Reactions
Topic: Balancing alkaline solutions
Replies: 1
Views: 22

Balancing alkaline solutions

When balancing alkaline half reactions why do we use OH- instead?
by marcus lin 1E
Fri Mar 08, 2019 9:01 am
Forum: Student Social/Study Group
Topic: Switching good discussion time for chem 14C lec 1
Replies: 1
Views: 89

Switching good discussion time for chem 14C lec 1

Hi! Because of scheduling issues would anyone in chem 14c lec 1 MWF 12-1250 next quarter like to switch into my discussion on wed at 2-250??
by marcus lin 1E
Tue Mar 05, 2019 10:23 pm
Forum: General Rate Laws
Topic: unique rate of reaction
Replies: 2
Views: 35

unique rate of reaction

what does the problem mean when referring to the unique rate of reaction?
by marcus lin 1E
Sun Mar 03, 2019 2:47 pm
Forum: Van't Hoff Equation
Topic: units of T
Replies: 5
Views: 53

units of T

would T be in kelvins?
by marcus lin 1E
Sun Mar 03, 2019 2:45 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: van't hoff equation
Replies: 6
Views: 71

van't hoff equation

How do you find either K1 or K2 in the equation if it's bracketed within ln?
by marcus lin 1E
Sun Mar 03, 2019 2:44 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: standard cell potential
Replies: 2
Views: 30

standard cell potential

If we're only given the standard cell potential of reduction, how do we find the standard cell potential of oxidation?
by marcus lin 1E
Sun Mar 03, 2019 2:43 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: difference between galvanic and voltaic
Replies: 4
Views: 55

difference between galvanic and voltaic

What's the difference between a galvanic cell and a voltaic cell?
by marcus lin 1E
Sun Mar 03, 2019 2:43 pm
Forum: Balancing Redox Reactions
Topic: oxidation states
Replies: 4
Views: 51

oxidation states

how do we calculate the oxidation states?
by marcus lin 1E
Sun Mar 03, 2019 2:42 pm
Forum: Balancing Redox Reactions
Topic: balancing redox reactions
Replies: 5
Views: 61

balancing redox reactions

When writing the half reactions, when do we know to add on H+ or H2O to the equation?
by marcus lin 1E
Sun Mar 03, 2019 2:41 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: delta G
Replies: 5
Views: 56

delta G

What does delta G represent?
by marcus lin 1E
Sun Feb 17, 2019 1:11 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: calculating delta G
Replies: 4
Views: 53

calculating delta G

If you're given standard conditions of delta H and delta S, will T= 25+273.15 since the standard conditions assume T is at 25 celsius?
by marcus lin 1E
Sun Feb 17, 2019 1:08 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: constant C
Replies: 7
Views: 80

constant C

What's the difference between C(sub v), C (sub p), and just C?
by marcus lin 1E
Sun Feb 17, 2019 1:07 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: calculating delta S
Replies: 4
Views: 41

calculating delta S

why is (V2/V1) equal to (P1/P2)?
by marcus lin 1E
Sun Feb 17, 2019 1:07 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: reversible and irreversible processes
Replies: 6
Views: 100

reversible and irreversible processes

what's the difference between reversible and irreversible?
by marcus lin 1E
Sun Feb 17, 2019 1:06 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: state functions and properties
Replies: 7
Views: 91

state functions and properties

What's the definition of a state property?
by marcus lin 1E
Sun Feb 17, 2019 1:04 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibb's Free energy
Replies: 4
Views: 59

Gibb's Free energy

When is deltaG negative and positive? What's the significance?
by marcus lin 1E
Tue Jan 29, 2019 11:12 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: pH of AlCl3
Replies: 1
Views: 44

pH of AlCl3

How do we calculate the pH of 0.055 M AlCl3 when the equilibrium constant isn't given?
by marcus lin 1E
Mon Jan 21, 2019 7:34 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: calculating x cubically
Replies: 2
Views: 31

calculating x cubically

how do we solve for x when it comes out to a cubic function?
by marcus lin 1E
Mon Jan 21, 2019 7:30 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ignoring x validity
Replies: 6
Views: 97

ignoring x validity

so if we ignore x and it isn't less than 5% of the original molarity and is therefore invalid, do we just continue to calculate x quadratically?
by marcus lin 1E
Mon Jan 21, 2019 7:25 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ignoring x
Replies: 16
Views: 212

ignoring x

so for some of the ICE table calculations we ignore x and just pretend it's 0, when do we do that?
by marcus lin 1E
Mon Jan 21, 2019 7:25 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: ignoring x
Replies: 10
Views: 122

ignoring x

so for some of the ICE table calculations we ignore x and just pretend it's 0, when do we do that?
by marcus lin 1E
Sun Jan 13, 2019 7:49 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Change in Pressure
Replies: 4
Views: 37

Change in Pressure

How does a change in pressure affect the reaction?
by marcus lin 1E
Sun Jan 13, 2019 7:49 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q and K
Replies: 4
Views: 49

Q and K

How are Q and K related?
by marcus lin 1E
Sun Jan 13, 2019 7:48 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE Tables
Replies: 3
Views: 50

ICE Tables

Can you use ICE tables for partial pressure?
by marcus lin 1E
Sun Dec 02, 2018 8:50 pm
Forum: Amphoteric Compounds
Topic: Amphoteric compounds besides water
Replies: 6
Views: 86

Amphoteric compounds besides water

what are some amphoteric compounds besides water, Dr. Lavelle didn't go over any besides water in lecture
by marcus lin 1E
Sun Dec 02, 2018 8:40 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted Base
Replies: 2
Views: 36

Bronsted Base

What is the difference between Bronsted and Lewis bases?
by marcus lin 1E
Sun Dec 02, 2018 8:36 pm
Forum: Naming
Topic: drawing ligands
Replies: 6
Views: 77

drawing ligands

why did Dr. Lavelle draw some of the NH3 ligands as NH3 and H3N on the molecule?
by marcus lin 1E
Sat Nov 24, 2018 8:41 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR model formula
Replies: 3
Views: 55

VSEPR model formula

how does the VSEPR model formula work? what if there's two central atoms and two lone pairs on each, would the formula have E4 or E2?
by marcus lin 1E
Sat Nov 24, 2018 8:37 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: freely rotating bonds
Replies: 1
Views: 29

freely rotating bonds

why can't atoms freely rotate around double and triple bonds?
by marcus lin 1E
Sat Nov 24, 2018 8:36 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: What is VSPER
Replies: 2
Views: 56

What is VSPER

what does VSPER stand for and do we need to memorize it?
by marcus lin 1E
Sun Nov 11, 2018 10:46 pm
Forum: Dipole Moments
Topic: How do you draw dipole moments
Replies: 6
Views: 96

How do you draw dipole moments

Do you draw it towards the least or most electronegative atom
by marcus lin 1E
Sun Nov 11, 2018 10:44 pm
Forum: Bond Lengths & Energies
Topic: Bond lengths and resonance structure
Replies: 2
Views: 49

Bond lengths and resonance structure

Do you just take the averages of the bond lengths in a resonance structure?
by marcus lin 1E
Sun Nov 11, 2018 10:41 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal charge on central atom
Replies: 5
Views: 160

Formal charge on central atom

Why does the formal charge on the central atom have to be as close to zero as possible?
by marcus lin 1E
Sun Nov 04, 2018 8:22 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Exceptions to electron configuration
Replies: 3
Views: 56

Exceptions to electron configuration

What are the exceptions to how atoms fill up their orbitals for electron configurations>
by marcus lin 1E
Sun Nov 04, 2018 8:20 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal charges in charged molecules
Replies: 5
Views: 79

Formal charges in charged molecules

How do you determine where the negative formal charge lies in a negatively charged molecule?
by marcus lin 1E
Sun Nov 04, 2018 8:19 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge on Central Atom
Replies: 9
Views: 144

Formal Charge on Central Atom

Why does the formal charge on the central atom have to be as close to 0 as possible?
by marcus lin 1E
Sun Oct 28, 2018 8:55 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Degeneracy
Replies: 7
Views: 96

Degeneracy

What does degeneracy of an orbital mean
by marcus lin 1E
Sun Oct 28, 2018 8:53 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron affinity
Replies: 1
Views: 43

Electron affinity

Can someone explain to me why the electron affinity trend is up and to the right?
by marcus lin 1E
Sun Oct 28, 2018 8:52 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Ionization energy
Replies: 2
Views: 33

Ionization energy

What is ionization energy and why is its trend up and to the right?
by marcus lin 1E
Sun Oct 21, 2018 7:59 pm
Forum: DeBroglie Equation
Topic: Remembering mass of electrons for tests
Replies: 6
Views: 118

Remembering mass of electrons for tests

Will we have to remember the mass of an electron for the tests/quizzes?
by marcus lin 1E
Sun Oct 21, 2018 7:55 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: h with a line through it?
Replies: 8
Views: 138

h with a line through it?

So Dr. Lavelle was talking about how h/4pi is the same as h with that line through it/2pi, can someone explain the difference?
by marcus lin 1E
Wed Oct 17, 2018 9:03 pm
Forum: DeBroglie Equation
Topic: Energy of ejected electron from energy of light
Replies: 1
Views: 31

Energy of ejected electron from energy of light

Can someone explain how I'd go about calculating the freq/wavelength/energy of an electron when only given the energy of the light used to eject said electron?
by marcus lin 1E
Sat Oct 13, 2018 1:59 pm
Forum: DeBroglie Equation
Topic: De Broglie Equation Dividing J*s by kg*m/s
Replies: 2
Views: 38

De Broglie Equation Dividing J*s by kg*m/s

So for De Broglie's Equation, you have to divide planck's constant (h) by momentum. But the units of h are in J*s and momentum is in kg*m/s, can someone explain to me how the units cancel out to get a unit appropriate for wavelength?
by marcus lin 1E
Sat Oct 13, 2018 1:52 pm
Forum: DeBroglie Equation
Topic: Measurable wave length properties
Replies: 3
Views: 53

Re: Measurable wave length properties

Yeah I think Dr. Lavelle's point is that the wavelength is only measurable in a quantum context. It doesn't seem to be something to stress over for the quizzes and tests.
by marcus lin 1E
Sat Oct 13, 2018 1:47 pm
Forum: Properties of Light
Topic: The PhotoElectric Effect
Replies: 2
Views: 41

Re: The PhotoElectric Effect

So if light only had wave properties then increasing the intensity of the light should allow light of an insufficient frequency to eject electrons. But this is not the case, so we can consider photons as packets of energy where each photon will interact with one electron.
by marcus lin 1E
Sun Oct 07, 2018 1:36 pm
Forum: Properties of Light
Topic: C=Delta x V
Replies: 6
Views: 71

Re: C=Delta x V

I think you mean lambda instead of delta, but i think the equation only considers the wavelength (lambda) and the frequency (v).
by marcus lin 1E
Sun Oct 07, 2018 12:52 pm
Forum: Limiting Reactant Calculations
Topic: Mole Ratios Within the Conversion
Replies: 3
Views: 58

Re: Mole Ratios Within the Conversion

So in the case of 3 moles CO2 and 6 moles of H2O, CO2 is the limiting reactant as CO2 and H2O react in a 1:1 ratio. Since the reaction produces an equal number of moles of O2, there will be 3 moles of O2 produced and just multiply that by O2's molar mass to get the grams of O2.
by marcus lin 1E
Sun Oct 07, 2018 12:45 pm
Forum: Limiting Reactant Calculations
Topic: Calculating Maximum Mass
Replies: 5
Views: 204

Re: Calculating Maximum Mass

I think for part b you'd have to use stoichiometry to find the number of moles for both products. To get moles NaOH you'd divide 2.00g NaOH by its molar mass and for the Copper Nitrate you'd multiply its concentration by its number of litres. Then you'd find the limiting reactant and treat it like a...

Go to advanced search