Search found 100 matches

by Philip
Sat Mar 14, 2020 6:57 pm
Forum: Van't Hoff Equation
Topic: Van't Hoff Equation
Replies: 6
Views: 102

Re: Van't Hoff Equation

I think the main way we use this equation is to find the new equilibrium constant based on a change in temperature
by Philip
Sat Mar 14, 2020 6:53 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: negative sign
Replies: 6
Views: 123

Re: negative sign

I think it's to show that energy is release or loss
by Philip
Sat Mar 14, 2020 6:52 pm
Forum: Van't Hoff Equation
Topic: ln
Replies: 9
Views: 131

Re: ln

You raise e by both sides of the equation
by Philip
Sat Mar 14, 2020 6:44 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: intensive vs extensive
Replies: 7
Views: 163

Re: intensive vs extensive

Extensive depends on the amount while intensive doesn't. It's important because it tells us which constant or which equation to use like specific heat capacity vs heat capacity, etc.
by Philip
Sat Mar 14, 2020 6:39 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: K
Replies: 2
Views: 63

Re: K

It symbolizes the equilibrium constant of the reaction
by Philip
Sat Mar 14, 2020 6:36 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Internal Energy
Replies: 6
Views: 180

Re: Internal Energy

Can anyone please explain to me why when it is an isothermal reversible expansion, we can assume that internal energy is 0 and q = -w? Thank you Isothermal means the temperature is constant and so the internal energy doesn't change so the change is 0. If change in internal energy is 0 then 0 = q + ...
by Philip
Sat Mar 14, 2020 6:32 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 282
Views: 134928

Re: Saying Thank You to Dr. Lavelle

THANK YOU SO MUCH DR. LAVELLE!!!!!!
by Philip
Sat Mar 14, 2020 6:31 pm
Forum: Balancing Redox Reactions
Topic: Pt in Cell Diagram
Replies: 10
Views: 170

Re: Pt in Cell Diagram

I think it is used when there's no solid that was explicitly said in the problem.
by Philip
Sat Mar 14, 2020 5:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Grading Scale
Replies: 14
Views: 290

Re: Grading Scale

I think he curves up depending on the class average at the end of the quarter
by Philip
Sat Mar 14, 2020 5:19 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Test 2 Concentration Cell
Replies: 3
Views: 33

Re: Test 2 Concentration Cell

As well as doubling the mass of the cathode electrode will it increase or decrease the cell potential
by Philip
Sat Mar 14, 2020 5:17 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Test 2 Concentration Cell
Replies: 3
Views: 33

Re: Test 2 Concentration Cell

Also, if water is added in the cathode solution would the cell potential increase or decrease?
by Philip
Sat Mar 14, 2020 5:15 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Test 2 Concentration Cell
Replies: 3
Views: 33

Test 2 Concentration Cell

A concentration cell was constructed with two electrodes containing ZnSO4 (aq) at 25 degrees C. The cathode concentration is 3.0M and the cell potential 0.0866V/
Calculate the concentration of the anode solution

Is LnQ going to be the anode concentration over cathode or cathode over anode?
by Philip
Sat Mar 14, 2020 3:28 pm
Forum: Van't Hoff Equation
Topic: Test 2 Calculate K after a temperature change
Replies: 1
Views: 69

Test 2 Calculate K after a temperature change

Given that delta H reaction = 161 kJ/mol and K = 8.43 x 10^-12 for the reaction at 25 degrees C. Calculate K at 125 degrees C. Assume that delta H reaction and delta S reaction remain constant over this temperature range.

Idk what I did because somehow I ended up with a new K value of 6.808 x 10^-96
by Philip
Sat Mar 14, 2020 3:10 pm
Forum: Van't Hoff Equation
Topic: what does it do?
Replies: 13
Views: 253

Re: what does it do?

Van't Hoff Equation is used to calculate the new equilibrium constant based on temperature change
by Philip
Sat Mar 14, 2020 3:04 pm
Forum: Balancing Redox Reactions
Topic: Redox Reaction in a Basic Solution
Replies: 3
Views: 116

Redox Reaction in a Basic Solution

SeO4 2- (aq) + Au (s) = Au 3+ (aq) + SeO3 2- (aq)

I was confused with the reduction half-reaction
I thought it would be 2e- + SeO4 2- + H+ = SeO3 2- + OH-

Im assuming Im wrong since I put H+ was I supposed to put H2O instead?
by Philip
Sat Mar 14, 2020 2:47 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Nernst Equation
Replies: 6
Views: 117

Nernst Equation

Do we need to convert RT/nF * lnQ into 0.0592/n log Q?

Because I decided not to convert during one of the problems on the test as I forgot the conversion rate and I got the wrong answer even when I think my calculations were right. So is it necessary to use this conversion?
by Philip
Sat Mar 14, 2020 2:40 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Calculating E cell at room temperature
Replies: 1
Views: 36

Calculating E cell at room temperature

2Ag+ (aq, 0.10M) + Cu (s) = 2Ag (s) + Cu 2+ (aq, 0.20M) Standard E cell is 0.460V

Can someone solve this pls.
by Philip
Sat Mar 14, 2020 2:05 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Test 2 on Standard Cell Potential
Replies: 6
Views: 44

Re: Test 2 on Standard Cell Potential

Oops the Lithium half-reaction has standard E = -3.040V
by Philip
Sat Mar 14, 2020 9:04 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Test 2 on Standard Cell Potential
Replies: 6
Views: 44

Re: Test 2 on Standard Cell Potential

Also I need to find the standard Gibbs Free Energy, do I just use -nFE(standard)?
by Philip
Sat Mar 14, 2020 9:03 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Test 2 on Standard Cell Potential
Replies: 6
Views: 44

Test 2 on Standard Cell Potential

The half-reactions are
Ce 4+ (aq) + e- = Ce 3+ (aq) Standard E = 1.44V
Li+ (aq) + e- = Li (s)

How do I know which one is the cathode and which one is the anode for me to use standard E cell = standard E cathode - standard E anode????
by Philip
Sat Mar 14, 2020 8:53 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 11
Views: 143

Cell Diagram

In a cell diagram, do we always use Platinum if nothing else is stated to be used?
by Philip
Sat Mar 14, 2020 8:50 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Concentration Cell
Replies: 3
Views: 30

Concentration Cell

So in a concentration cell, is the anode always the one with the lower concentration?
by Philip
Sat Mar 14, 2020 8:33 am
Forum: Student Social/Study Group
Topic: thoughtful poetry time + lavelle appreciation
Replies: 6
Views: 166

Re: thoughtful poetry time + lavelle appreciation

This is very beautiful. Thank you so much Lavelle for everything you've done and continue to do for your students :)
by Philip
Sat Mar 14, 2020 8:31 am
Forum: Student Social/Study Group
Topic: Curve?
Replies: 31
Views: 1408

Re: Curve?

I think it's either/or. If you end up with a C you pass or if you end up with 250 points you pass the class. Last quarter I had 444/500 points and ended with an A- so he does kind of curve but we won't know until they find the average points out of 500 of the class
by Philip
Sat Mar 14, 2020 8:28 am
Forum: Student Social/Study Group
Topic: Week 10 Review Question
Replies: 5
Views: 153

Re: Week 10 Review Question

Using the stoichiometric ratios and creating an ice table you should be able to calculate the molar concentrations
by Philip
Sat Mar 14, 2020 8:26 am
Forum: Student Social/Study Group
Topic: Coronavirus Joke
Replies: 14
Views: 749

Re: Coronavirus Joke

Thank you for trying to lighten up the mood
by Philip
Sat Mar 14, 2020 8:26 am
Forum: Student Social/Study Group
Topic: Tips for Staying Focused
Replies: 8
Views: 221

Re: Tips for Staying Focused

To stay focus I usually take a couple of breaths and try my best to only think about the task at hand and ignore my surroundings
by Philip
Fri Mar 13, 2020 1:49 am
Forum: Administrative Questions and Class Announcements
Topic: Final
Replies: 12
Views: 234

Re: Final

His latest update still didn't tell us how we are turning in the final
by Philip
Thu Mar 12, 2020 12:17 pm
Forum: Ideal Gases
Topic: Acids and Basis: Salts
Replies: 9
Views: 120

Re: Acids and Basis: Salts

Use an ice table and any available information like the pKa or pKb as well as any equilibrium constants would be needed to solve such a problem
by Philip
Thu Mar 12, 2020 12:13 pm
Forum: Administrative Questions and Class Announcements
Topic: Take Home Final
Replies: 16
Views: 275

Re: Take Home Final

I heard some people's take-home final is taken over a large window of time to accommodate for everyone but the tests are still designed to take the same amount of time. The only difference is to scan and upload our answers I guess. I hope we get an update soon
by Philip
Thu Mar 12, 2020 12:11 pm
Forum: Student Social/Study Group
Topic: Final Exam
Replies: 22
Views: 569

Re: Final Exam

How are you guys going to be studying for the final I'm planning to look over the study guide Dr. Lavelle sent out, do the endgame worksheet Lyndon posted, and review my notes/ do practice hw problems. Also some UAs released another set of practice problems! https://lavelle.chem.ucla.edu/forum/view...
by Philip
Wed Mar 11, 2020 9:46 pm
Forum: Student Social/Study Group
Topic: Final Exam
Replies: 22
Views: 569

Re: Final Exam

How are you guys going to be studying for the final
by Philip
Wed Mar 11, 2020 9:44 pm
Forum: Administrative Questions and Class Announcements
Topic: Final
Replies: 12
Views: 234

Final

How will we turn in the final??
by Philip
Wed Mar 11, 2020 9:43 pm
Forum: Administrative Questions and Class Announcements
Topic: final
Replies: 14
Views: 215

Re: final

His latest email said that it'll be a take-home final now and he'll post the test on the website
by Philip
Wed Mar 11, 2020 9:39 pm
Forum: Administrative Questions and Class Announcements
Topic: ENDGAME Review Session
Replies: 71
Views: 2761

Re: ENDGAME Review Session

When are the answers going to be posted?
by Philip
Tue Mar 10, 2020 9:39 pm
Forum: Administrative Questions and Class Announcements
Topic: ENDGAME Review Session
Replies: 71
Views: 2761

Re: ENDGAME Review Session

Are we still going to have a review session on Friday?
by Philip
Tue Mar 10, 2020 12:37 pm
Forum: Balancing Redox Reactions
Topic: Half Reactions
Replies: 15
Views: 133

Half Reactions

Whenever we balance the half-reactions, how do we know whether we need to add an H+, OH-, and/or H2O on what side of the reduction or oxidation half-reaction?
by Philip
Tue Mar 10, 2020 12:28 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Boltzmann Equation
Replies: 2
Views: 73

Boltzmann Equation

I'm confused about the relationship between Boltzmann's constant and the gas constant.
by Philip
Mon Mar 09, 2020 10:37 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Reversible vs Irreversible
Replies: 3
Views: 84

Re: Reversible vs Irreversible

Then explain the graph of pressure vs volume of the reversible and irreversible expansion?
by Philip
Mon Mar 09, 2020 7:15 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Reversible vs Irreversible
Replies: 3
Views: 84

Reversible vs Irreversible

What is the difference between isothermal reversible expansion vs irreversible expansion?
by Philip
Mon Mar 09, 2020 7:13 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Calculating K
Replies: 6
Views: 57

Re: Calculating K

How does sig figs factor in calculating K then?
by Philip
Mon Mar 09, 2020 5:12 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: S = 0
Replies: 18
Views: 279

Re: S = 0

The total change in entropy is 0 if the system is isothermal and reversible expansion. The entropy change of the surrounding is 0 if the system is isothermal and irreversible expansion.
by Philip
Mon Mar 09, 2020 5:04 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: ΔS of Phase Changes
Replies: 5
Views: 140

Re: ΔS of Phase Changes

We calculate the last step because the change of entropy is a state function and we only care about the initial and final state of the reaction. In this case, we want the entropy change of the water evaporating at 85 degrees so we need the water to heat up and change phase and then bring the temp of...
by Philip
Mon Mar 09, 2020 4:57 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Calculating concentrations at equilibrium
Replies: 4
Views: 140

Calculating concentrations at equilibrium

One mole of COBr2 was injected in a 1L flask at a certain temperature. The equilibrium mixture was then analyzed and found to contain 0.304 moles of CO.
Calculate the concentration of each species at equilibrium.
by Philip
Mon Mar 09, 2020 11:35 am
Forum: Ideal Gases
Topic: Partial Pressure
Replies: 13
Views: 142

Partial Pressure

2NO + O2 = 2NO2

Why would decreasing the volume of a system increase the partial pressure of NO2?
by Philip
Mon Mar 09, 2020 11:17 am
Forum: Ideal Gases
Topic: PV=nRT
Replies: 12
Views: 161

Re: PV=nRT

Pressure times Volume = moles of gas times the gas constant times the temperature
by Philip
Mon Mar 09, 2020 11:15 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Calculating K
Replies: 6
Views: 57

Calculating K

When calculating K, why are there no units
by Philip
Sun Dec 08, 2019 10:33 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Nitro vs Nitrito
Replies: 6
Views: 179

Re: Nitro vs Nitrito

It would either underline N or O or it'll be written as NO2 or ONO (and the first element is the one that's bonded)
by Philip
Sun Dec 08, 2019 10:28 pm
Forum: Naming
Topic: NH4[PtCl3(NH3)]
Replies: 5
Views: 140

Re: NH4[PtCl3(NH3)]

It is platinate because the compound is an anion
by Philip
Sun Dec 08, 2019 10:26 pm
Forum: Naming
Topic: Polydentate
Replies: 2
Views: 104

Re: Polydentate

How can you tell a ligand is a polydentate? And what are examples of anionic ligands, how are they different from anions? A ligand is polydentate if it binds to the metal in two or more places, because it has two or more lone electron pairs. For example EDTA is a polydentate. They are different beca...
by Philip
Sun Dec 08, 2019 10:22 pm
Forum: Naming
Topic: [Fe(OH)(OH2)5]Cl2
Replies: 3
Views: 116

Re: [Fe(OH)(OH2)5]Cl2

So the name for [Fe(OH)(OH2)5]Cl2 is pentaaquahydroxidoiron(III) chloride. But how did they get the charge on iron? And why is it chloride if there are two chloride, shouldn't it be dichloride? Since there is two chlorine it has a -2 charge so the coordination compound has an overall 2+ charge (Also...
by Philip
Sun Dec 08, 2019 10:19 pm
Forum: Naming
Topic: -ate
Replies: 10
Views: 232

Re: -ate

Only if the metal coordination compound is an anion
by Philip
Sun Dec 08, 2019 10:19 pm
Forum: Naming
Topic: Types of Compounds
Replies: 2
Views: 100

Re: Types of Compounds

Based on their electronegativity, i believe
by Philip
Sun Dec 08, 2019 10:18 pm
Forum: Naming
Topic: type of compound
Replies: 2
Views: 106

Re: type of compound

amphoteric metal oxide
by Philip
Sun Dec 08, 2019 10:17 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Stronger acid?
Replies: 10
Views: 522

Re: Stronger acid?

Which would be the stronger acid HClO or HClO2? I know that you first look at bond length and then anion strength but how would you figure this one out?

HClO2 is stronger because of how there's more oxygen and a higher electron pulling ability, which delocalizes the electron
by Philip
Sun Dec 08, 2019 10:15 pm
Forum: Calculating the pH of Salt Solutions
Topic: OH- and H+
Replies: 6
Views: 181

OH- and H+

How do you know if the solution will result in OH or H
by Philip
Sun Dec 08, 2019 10:14 pm
Forum: Calculating the pH of Salt Solutions
Topic: pH
Replies: 6
Views: 153

pH

How is the pH of a solution is related to its hydronium ion and hydroxide ion concentrations?
by Philip
Sun Dec 08, 2019 10:11 pm
Forum: Air Pollution & Acid Rain
Topic: Carbon dioxide
Replies: 1
Views: 98

Carbon dioxide

how can carbon dioxide lead to respiratory acidosis?
by Philip
Sun Dec 01, 2019 10:05 pm
Forum: Naming
Topic: Ligand Names
Replies: 1
Views: 37

Ligand Names

Do we need to know ligand names for the final
by Philip
Sun Dec 01, 2019 9:59 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sigma Bond
Replies: 10
Views: 117

Re: Sigma Bond

Yep always
by Philip
Sun Dec 01, 2019 9:55 pm
Forum: Naming
Topic: Bis, Tris, Tetrakis, Pentakis
Replies: 3
Views: 73

Bis, Tris, Tetrakis, Pentakis

I am confused on how to use Bis, Tris, Tetrakis, Pentakis
by Philip
Sun Dec 01, 2019 9:48 pm
Forum: Naming
Topic: Chelating
Replies: 6
Views: 102

Chelating

What is chelating?
by Philip
Sun Nov 24, 2019 8:48 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Hydrogen Bonding
Replies: 13
Views: 161

Re: Hydrogen Bonding

It happens with polar molecules with N, O, F, elements that have lone pairs that attract Hydrogen
by Philip
Sun Nov 24, 2019 8:46 pm
Forum: Naming
Topic: Oxidation
Replies: 14
Views: 200

Oxidation

What's an oxidation number
by Philip
Sun Nov 24, 2019 8:45 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligand
Replies: 10
Views: 118

Ligand

What is a ligand?
by Philip
Sun Nov 24, 2019 8:44 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: T-Shape
Replies: 5
Views: 104

T-Shape

So I was wondering why for T shape the two electron pairs are like right next to each other in the trigonal planar part of the trigonal bipyramidal
by Philip
Sun Nov 24, 2019 8:42 pm
Forum: Hybridization
Topic: H
Replies: 3
Views: 48

H

I missed the lecture can someone summarize what hybridization is
by Philip
Sun Nov 10, 2019 4:14 pm
Forum: Dipole Moments
Topic: What's a dipole
Replies: 4
Views: 45

What's a dipole

What's a dipole
by Philip
Sun Nov 10, 2019 4:02 pm
Forum: Lewis Structures
Topic: Electronegative
Replies: 14
Views: 155

Electronegative

So the more electronegative elements are more likely to get the electron?
by Philip
Sun Nov 10, 2019 3:41 pm
Forum: Octet Exceptions
Topic: Elements like Xenon
Replies: 1
Views: 53

Elements like Xenon

Elements like Xenon can have 12 electrons. Is 12 the max or what for elements with octet exceptions.
by Philip
Sun Nov 10, 2019 3:38 pm
Forum: Lewis Structures
Topic: Exceptions like Xenon
Replies: 3
Views: 47

Exceptions like Xenon

Are there other elements that can have 12 electrons like Xenon?
by Philip
Sun Nov 10, 2019 3:37 pm
Forum: Lewis Structures
Topic: Xenon
Replies: 4
Views: 92

Xenon

How come Xenon can have 12 electrons
by Philip
Sun Nov 03, 2019 10:08 pm
Forum: Trends in The Periodic Table
Topic: Electron Configuration Rules
Replies: 4
Views: 66

Re: Electron Configuration Rules

Hund's Rule states that each suborbital will be filled with electrons of parallel spins
Pauli's Exclusion Principle states that you can't have the same spin for paired electrons
by Philip
Sun Nov 03, 2019 9:56 pm
Forum: Trends in The Periodic Table
Topic: Ionization
Replies: 5
Views: 290

Ionization

Why does oxygen have lower ionization energy compared to nitrogen
by Philip
Sun Nov 03, 2019 9:50 pm
Forum: Trends in The Periodic Table
Topic: Ionization energy and Electron affinity
Replies: 1
Views: 48

Ionization energy and Electron affinity

I'm confused about the difference between the two
by Philip
Sun Nov 03, 2019 9:44 pm
Forum: Dipole Moments
Topic: Dipole
Replies: 1
Views: 37

Dipole

What's a dipole?
by Philip
Sun Nov 03, 2019 9:41 pm
Forum: Octet Exceptions
Topic: Uhhh
Replies: 3
Views: 69

Uhhh

What are the octet exceptions?
by Philip
Sun Oct 27, 2019 6:33 pm
Forum: Electronegativity
Topic: Electronegativity in Covalent Bonds
Replies: 3
Views: 45

Re: Electronegativity in Covalent Bonds

I believe it's only for covalent bonds
by Philip
Sun Oct 27, 2019 6:31 pm
Forum: Ionic & Covalent Bonds
Topic: Charges
Replies: 4
Views: 62

Charges

Wait I dont understand how a molecule like SO4 has a negative charge or NH4 with a positive charge
by Philip
Sun Oct 27, 2019 6:27 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Module Question
Replies: 1
Views: 36

Re: Module Question

Multiply 60W with 1s to convert it to Joules
Now use the speed of light equation and energy equation to get Energy = planks constant times speed of light over the wavelength. You will get the energy per photons
Then you divide the energy emitted with the energy per photon to get the number of photons
by Philip
Sun Oct 27, 2019 6:07 pm
Forum: Quantum Numbers and The H-Atom
Topic: 1.1
Replies: 1
Views: 44

1.1

1.1 Lines in the Balmer series of the hydrogen spectrum are observed at 656.3, 486.1, 434.0, and 410.2 nm. What is the wavelength of the next line in the series?
by Philip
Sun Oct 27, 2019 6:03 pm
Forum: Resonance Structures
Topic: Ideal Lewis Structure
Replies: 4
Views: 61

Re: Ideal Lewis Structure

You calculate by finding the formal charge, the more atoms with 0 formal charge the better. We also have to consider the electronegativity of the element
by Philip
Sun Oct 20, 2019 10:17 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenberg In 1 Dimension
Replies: 2
Views: 47

Re: Heisenberg In 1 Dimension

I think it is safe to assume that it will be used in one dimension
by Philip
Sun Oct 20, 2019 10:09 pm
Forum: Properties of Light
Topic: 1F.19
Replies: 5
Views: 63

Re: 1F.19

s-block metals have lower ionization energies compared so they tend to form cations since they are more willing to give electrons away, so they are more reactive.
by Philip
Sun Oct 20, 2019 9:58 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: How to use it
Replies: 5
Views: 87

How to use it

When do we use this equation for?
by Philip
Sun Oct 20, 2019 9:54 pm
Forum: Quantum Numbers and The H-Atom
Topic: Magnetic Quantum Number
Replies: 5
Views: 74

Magnetic Quantum Number

I know how to get the third quantum number but like what does this number tell us about the electron?
by Philip
Sun Oct 20, 2019 9:49 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: The equation
Replies: 2
Views: 56

The equation

Where did the 4pi come from
by Philip
Sun Oct 13, 2019 11:27 pm
Forum: Properties of Light
Topic: Energy Equation
Replies: 3
Views: 36

Re: Energy Equation

Plancks Constant my guy
by Philip
Sun Oct 13, 2019 11:19 pm
Forum: Properties of Light
Topic: Rydberg's Equation
Replies: 1
Views: 31

Rydberg's Equation

When is Rydberg's equation used?
by Philip
Sun Oct 13, 2019 11:18 pm
Forum: Properties of Light
Topic: Photons
Replies: 3
Views: 60

Photons

Do photons have mass?
by Philip
Sun Oct 13, 2019 11:17 pm
Forum: Properties of Electrons
Topic: Electron standing wave
Replies: 2
Views: 28

Electron standing wave

What was the standing wave animation/picture that was shown in class
by Philip
Sun Oct 13, 2019 11:00 pm
Forum: DeBroglie Equation
Topic: DeBroglie's Equation
Replies: 1
Views: 56

DeBroglie's Equation

How come this wave equation can't be applies to light since light is massless but the equation was derived from the speed of light equation C= wavelength times frequency.
by Philip
Fri Oct 04, 2019 12:05 am
Forum: SI Units, Unit Conversions
Topic: Bond Length
Replies: 5
Views: 101

Bond Length

Whats the length of a bond?
by Philip
Fri Oct 04, 2019 12:01 am
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Determining Molar Mass
Replies: 19
Views: 170

Re: Determining Molar Mass

It should be fine
by Philip
Thu Oct 03, 2019 11:57 pm
Forum: Molarity, Solutions, Dilutions
Topic: G 13
Replies: 3
Views: 191

G 13

To prepare a fertilizer solution, a florist dilutes 1L of 2M NH4NO3 by adding 3L of Water. The florist then adds 100mL of the diluted solution to each plant. How many moles of nitrogen atoms will each plant receive?
by Philip
Thu Oct 03, 2019 11:49 pm
Forum: Balancing Chemical Reactions
Topic: H11
Replies: 3
Views: 96

H11

Help balance equation pls

Fe2O3 + CO = Fe3O4 + CO2

and

Fe3O4 + CO = Fe + CO2
by Philip
Thu Oct 03, 2019 11:45 pm
Forum: Limiting Reactant Calculations
Topic: Limiting Reactant
Replies: 2
Views: 66

Limiting Reactant

Help cant solve
5g of KMnO4 is dissolved in 150mL. If 20mL of the solution is removed and placed in a 250mL what is the concentration?

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