Search found 102 matches

by Jasmine Vallarta 2L
Tue Mar 10, 2020 7:43 pm
Forum: Student Social/Study Group
Topic: Final Exam
Replies: 22
Views: 328

Re: Final Exam

We will have to wait for Dr. Lavelle's email/ an update from our TA's
by Jasmine Vallarta 2L
Tue Mar 10, 2020 7:40 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Ka Kb
Replies: 11
Views: 56

Re: Ka Kb

Ka is for acids and Kb is for bases
by Jasmine Vallarta 2L
Tue Mar 10, 2020 7:16 pm
Forum: Biological Examples
Topic: COVID-19
Replies: 6
Views: 110

Re: COVID-19

If your TA doesn't say anything, you should email them a picture of it just to be safe.
by Jasmine Vallarta 2L
Sun Mar 08, 2020 11:02 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Purpose of Electrode
Replies: 9
Views: 99

Re: Purpose of Electrode

The electrode is a sold metal conductor that allows e- flow in the galvanic cell. We use Pt because it is an inert metal. Some redox half rxns don't have solid metals involved (X2+ + e- --> X+), so we must add Pt to allow e- transfer from the anode to the cathode
by Jasmine Vallarta 2L
Sun Mar 08, 2020 10:59 am
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Calculating ln Q
Replies: 20
Views: 178

Re: Calculating ln Q

If rR --> pP, then Q is the ([P]^p)/([R]/^r) at any given time of the rxn; Q is different from Kc, the equilibrium constant; Q can be found with concentrations or partial pressures
by Jasmine Vallarta 2L
Sun Mar 08, 2020 10:56 am
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: finding n in G=-nFE
Replies: 15
Views: 157

Re: finding n in G=-nFE

you can find n after balancing the half rxns. the number of e- should cancel out and that number = n
by Jasmine Vallarta 2L
Sun Mar 08, 2020 10:55 am
Forum: Balancing Redox Reactions
Topic: Cathode and Anode
Replies: 16
Views: 173

Re: Cathode and Anode

E(cell) = E(cathode) - E(anode); since we want E(cell) > 0, E(cathode) > E(anode)
by Jasmine Vallarta 2L
Sun Mar 08, 2020 10:53 am
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Diamond
Replies: 6
Views: 93

Re: Diamond

diamond --> graphite has a very very large activation energy
by Jasmine Vallarta 2L
Sun Mar 01, 2020 8:00 pm
Forum: Balancing Redox Reactions
Topic: Test 2
Replies: 19
Views: 150

Re: Test 2

only the second part of thermodynamics and electrochem:)
by Jasmine Vallarta 2L
Sun Mar 01, 2020 7:58 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Writing cell diagrams
Replies: 7
Views: 36

Re: Writing cell diagrams

commas are for if they are in the same phase
by Jasmine Vallarta 2L
Sun Mar 01, 2020 7:56 pm
Forum: Balancing Redox Reactions
Topic: oxidizing agents
Replies: 11
Views: 62

Re: oxidizing agents

the oxidizing agent gets reduced and the reducing agent gets oxidized
by Jasmine Vallarta 2L
Sun Mar 01, 2020 7:56 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: delta G=-nFE
Replies: 7
Views: 51

Re: delta G=-nFE

you can try to find the half rxns
by Jasmine Vallarta 2L
Sun Mar 01, 2020 7:55 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: cell diagrams
Replies: 8
Views: 48

Re: cell diagrams

yes
by Jasmine Vallarta 2L
Fri Feb 21, 2020 12:14 pm
Forum: Balancing Redox Reactions
Topic: Test 2 [ENDORSED]
Replies: 12
Views: 110

Re: Test 2 [ENDORSED]

test 2 was moved to wk 9 :)
by Jasmine Vallarta 2L
Fri Feb 21, 2020 12:13 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Ph
Replies: 8
Views: 75

Re: Ph

If you are given the pH, that is the pH when the reaction is at equilibrium
by Jasmine Vallarta 2L
Fri Feb 21, 2020 12:12 pm
Forum: Balancing Redox Reactions
Topic: Reduction vs. oxidation
Replies: 29
Views: 165

Re: Reduction vs. oxidation

OIL RIG:
Oxidation
Is
Losing e-


Reduction
Is
Gaining e-
by Jasmine Vallarta 2L
Fri Feb 21, 2020 12:10 pm
Forum: Balancing Redox Reactions
Topic: oxidation numbers
Replies: 8
Views: 45

Re: oxidation numbers

you can usually use commonly known oxidation numbers to solve for the remaining unknown oxidation numbers.
by Jasmine Vallarta 2L
Mon Feb 17, 2020 1:17 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: G vs G knot
Replies: 15
Views: 91

Re: G vs G knot

G knot is under standard conditions
by Jasmine Vallarta 2L
Tue Feb 11, 2020 1:51 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Acid and [H3O] Midterm Q
Replies: 3
Views: 47

Re: Acid and [H3O] Midterm Q

use an ice table with [HA] = 0.10 M as HA's initial concentration
by Jasmine Vallarta 2L
Tue Feb 11, 2020 1:46 pm
Forum: Student Social/Study Group
Topic: set up of the midterm
Replies: 4
Views: 53

Re: set up of the midterm

usually 8 questions; 120 points
by Jasmine Vallarta 2L
Tue Feb 11, 2020 1:42 pm
Forum: Student Social/Study Group
Topic: just confirming there is no class Wednesday of the midterm?
Replies: 5
Views: 59

Re: just confirming there is no class Wednesday of the midterm?

During the times of lecture on Wednesday, there are small Q&A's being run by TA's for any last minute questions
by Jasmine Vallarta 2L
Wed Feb 05, 2020 11:14 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Cp and Cv
Replies: 10
Views: 62

Re: Cp and Cv

I'm pretty sure we won't have to memorize them, but it never hurts to memorize them just in case :)
by Jasmine Vallarta 2L
Wed Feb 05, 2020 11:12 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: R constants
Replies: 21
Views: 513

Re: R constants

it depends on what units are given in the problem; each R value has a different set of units
by Jasmine Vallarta 2L
Wed Feb 05, 2020 11:11 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Potential Midterm Questions
Replies: 2
Views: 28

Re: Potential Midterm Questions

It would be a good idea to know the Lewis structures, but since knowing the Lewis structure was more of 14A content, even if we have to draw a Lewis structure, it shouldn't be anything too difficult
by Jasmine Vallarta 2L
Wed Feb 05, 2020 11:19 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: equations with q
Replies: 2
Views: 26

Re: equations with q

It depends on which C value you use
by Jasmine Vallarta 2L
Wed Feb 05, 2020 11:15 am
Forum: Ideal Gases
Topic: Temperature
Replies: 17
Views: 111

Re: Temperature

it depends on the units given/what they ask for
by Jasmine Vallarta 2L
Sat Jan 25, 2020 5:04 pm
Forum: Phase Changes & Related Calculations
Topic: Bond Enthalpies
Replies: 5
Views: 29

Re: Bond Enthalpies

It's least accurate because most of the values on the table are averaged
by Jasmine Vallarta 2L
Sat Jan 25, 2020 5:02 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond Enthalpy
Replies: 4
Views: 21

Re: Bond Enthalpy

requires energy > 0
releases energy < 0
by Jasmine Vallarta 2L
Sat Jan 25, 2020 5:01 pm
Forum: Ideal Gases
Topic: R Constant
Replies: 26
Views: 170

Re: R Constant

it depends on the units of pressure given to you in the problem
by Jasmine Vallarta 2L
Sat Jan 25, 2020 4:58 pm
Forum: Ideal Gases
Topic: aqueous elements in eq calculation
Replies: 8
Views: 51

Re: aqueous elements in eq calculation

included: (g), (aq)
not included: (l), (s)
by Jasmine Vallarta 2L
Sat Jan 25, 2020 4:57 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Value of X
Replies: 7
Views: 54

Re: Value of X

you use the K value and equate it to the ice table values, then solve for x with algebra
by Jasmine Vallarta 2L
Sat Jan 25, 2020 4:55 pm
Forum: Ideal Gases
Topic: R Constant
Replies: 18
Views: 148

Re: R Constant

The R constant differs depending on what units are used for pressure so we don't have to manually convert it
by Jasmine Vallarta 2L
Sat Jan 25, 2020 4:54 pm
Forum: Phase Changes & Related Calculations
Topic: Calculating Bond Enthalpies
Replies: 4
Views: 22

Re: Calculating Bond Enthalpies

a table would be provided with values for the bond enthalpies
by Jasmine Vallarta 2L
Thu Jan 23, 2020 2:23 pm
Forum: Ideal Gases
Topic: PV=nRT
Replies: 13
Views: 91

Re: PV=nRT

P = (n/V)RT = (concentration)RT
by Jasmine Vallarta 2L
Tue Jan 21, 2020 5:36 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: K value at a specific temp
Replies: 6
Views: 51

Re: K value at a specific temp

we only have to predict the K value at a temperature change for exo/endothermic reactions. That's all that was covered in lecture
by Jasmine Vallarta 2L
Tue Jan 21, 2020 5:35 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: H2O in K Expressions
Replies: 6
Views: 33

Re: H2O in K Expressions

solids and liquids aren't included. Only (g) and (aq)
by Jasmine Vallarta 2L
Tue Jan 21, 2020 5:33 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ice box
Replies: 4
Views: 34

Re: ice box

if the state of matter is (s) or (l)
by Jasmine Vallarta 2L
Tue Jan 21, 2020 5:32 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: suggestions
Replies: 16
Views: 111

Re: suggestions

I use crash course
by Jasmine Vallarta 2L
Tue Jan 21, 2020 5:30 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: using K
Replies: 5
Views: 32

Re: using K

it usually depends on the units that are given in the problem
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:26 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE charts on tests/exams
Replies: 8
Views: 55

Re: ICE charts on tests/exams

show work just to be safe?
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:25 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Reaction Quotient Units
Replies: 10
Views: 53

Re: Reaction Quotient Units

like K, Q is also unitless
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:24 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Hw for next week
Replies: 19
Views: 125

Re: Hw for next week

as long as the problems cover "recent material"
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:23 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q=K
Replies: 14
Views: 79

Re: Q=K

If you're unsure whether a rxn has reached equilibrium, you have to use Q. If you know the K value and it matches Q, then you know that the rxn has reached equilibrium
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:21 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K units
Replies: 10
Views: 65

Re: K units

K is a constant
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:21 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: delta H
Replies: 5
Views: 32

Re: delta H

For now, we just need to know the value of delta H to classify a reaction as endo/exothermic
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:20 am
Forum: Administrative Questions and Class Announcements
Topic: Study Guide Test One
Replies: 17
Views: 128

Re: Study Guide Test One

Probably not. I suggest redoing hw problems or other unassigned problems from the book
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:19 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Kw
Replies: 16
Views: 97

Re: Kw

Kw = 1.0 x 10^-14
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:18 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: What is K
Replies: 6
Views: 39

Re: What is K

K can represent both Kc and Kp. Kc is specific to a species' concentration and Kp is for a gas' partial pressure.
by Jasmine Vallarta 2L
Wed Jan 15, 2020 9:14 am
Forum: Administrative Questions and Class Announcements
Topic: Test 1
Replies: 7
Views: 67

Re: Test 1

when is test 1?
by Jasmine Vallarta 2L
Fri Dec 06, 2019 12:06 pm
Forum: Sigma & Pi Bonds
Topic: test 2 #7a
Replies: 4
Views: 72

Re: test 2 #7a

It's the number of lone pairs present in the molecule
by Jasmine Vallarta 2L
Tue Dec 03, 2019 1:37 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Where to minimize formal charge
Replies: 4
Views: 55

Re: Where to minimize formal charge

My TA said to always put it on oxygen as a rule of thumb
by Jasmine Vallarta 2L
Tue Dec 03, 2019 1:33 pm
Forum: Octet Exceptions
Topic: 2.27
Replies: 7
Views: 86

Re: 2.27

radicals only occur when there is an odd number of e-
by Jasmine Vallarta 2L
Tue Dec 03, 2019 1:30 pm
Forum: Naming
Topic: Oxidation Number
Replies: 3
Views: 35

Re: Oxidation Number

you have to know the charges of the other molecules that make up the complex and the overall charge of the complex in order to figure out the oxidation number of the metal atom
by Jasmine Vallarta 2L
Tue Dec 03, 2019 1:28 pm
Forum: Student Social/Study Group
Topic: Final topics
Replies: 10
Views: 96

Re: Final topics

it is cumulative
by Jasmine Vallarta 2L
Tue Dec 03, 2019 1:27 pm
Forum: Naming
Topic: Naming Coordination Compounds that Are Polydentate
Replies: 1
Views: 34

Re: Naming Coordination Compounds that Are Polydentate

These are the objectives for the coordination compounds outline: - Describe coordination compounds for the transition metal ions in terms of coordination number, oxidation number, and types of ligands. • Be familiar with the rules for naming coordination compounds. • Identify the shape and draw stru...
by Jasmine Vallarta 2L
Fri Nov 29, 2019 3:04 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: coordination number
Replies: 8
Views: 60

Re: coordination number

I think it's just the ligands
by Jasmine Vallarta 2L
Fri Nov 29, 2019 2:49 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Location
Replies: 11
Views: 105

Re: Final Exam Location

It will probably be the same process as the midterm.
by Jasmine Vallarta 2L
Fri Nov 29, 2019 2:29 pm
Forum: Naming
Topic: charge of trnasition metal
Replies: 4
Views: 40

Re: charge of trnasition metal

They would most likely be given to us, unless we are instructed to figure out the charge of the TM based on the TM coordinate compound given
by Jasmine Vallarta 2L
Fri Nov 29, 2019 2:22 pm
Forum: Conjugate Acids & Bases
Topic: Definition of conjugate base
Replies: 6
Views: 287

Re: Definition of conjugate base

A conjugate base is what is formed when an acid releases its acidic hydrogen (a proton)
by Jasmine Vallarta 2L
Fri Nov 29, 2019 2:15 pm
Forum: Lewis Acids & Bases
Topic: HCl vs HF
Replies: 19
Views: 130

Re: HCl vs HF

Cl is bigger than F; F is more electronegative
by Jasmine Vallarta 2L
Sat Nov 23, 2019 8:26 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: What is a chelate
Replies: 2
Views: 22

Re: What is a chelate

complex containing 1 or more ligands that form a ring of atoms including the central atom
by Jasmine Vallarta 2L
Sat Nov 23, 2019 8:25 pm
Forum: Resonance Structures
Topic: Resonance and Naming
Replies: 11
Views: 120

Re: Resonance and Naming

no
by Jasmine Vallarta 2L
Sat Nov 23, 2019 8:24 pm
Forum: Sigma & Pi Bonds
Topic: How to Find Sigma Bonds and Pi Bonds
Replies: 15
Views: 164

Re: How to Find Sigma Bonds and Pi Bonds

single bond = 1 sigma
double bond = 1 sigma + 1 pi
triple bond = 1 sigma + 2 pi
by Jasmine Vallarta 2L
Sat Nov 23, 2019 8:23 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Seesaw
Replies: 23
Views: 172

Re: Seesaw

yes
by Jasmine Vallarta 2L
Sun Nov 17, 2019 10:37 pm
Forum: Student Social/Study Group
Topic: Test 2
Replies: 11
Views: 96

Re: Test 2

Everything that we covered during lecture after the midterm to (I think) Monday.
by Jasmine Vallarta 2L
Sun Nov 17, 2019 10:36 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Sigma and Pi Bonds
Replies: 15
Views: 137

Re: Sigma and Pi Bonds

For a triple bond, I think of it as 1 sigma bond and then 2 pi bonds
by Jasmine Vallarta 2L
Sun Nov 17, 2019 10:35 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: bond angles
Replies: 8
Views: 53

Re: bond angles

lone pairs push the bonding pairs closer together
by Jasmine Vallarta 2L
Tue Nov 12, 2019 11:41 am
Forum: Ionic & Covalent Bonds
Topic: Solid v. Liquid v. Gas
Replies: 8
Views: 71

Re: Solid v. Liquid v. Gas

Usually it's given, but if it's something we should know, like a hydrocarbon combustion reaction, then we should know the products are h2o (g) + co2 (g)
by Jasmine Vallarta 2L
Tue Nov 12, 2019 11:37 am
Forum: Administrative Questions and Class Announcements
Topic: Week 7 Homework
Replies: 7
Views: 79

Re: Week 7 Homework

I'd say anything that we covered in lecture from last week or the week before.
by Jasmine Vallarta 2L
Tue Nov 12, 2019 11:36 am
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR
Replies: 5
Views: 37

Re: VSEPR

We probably will have to memorize/be familiar with the different shapes
by Jasmine Vallarta 2L
Tue Nov 05, 2019 9:00 pm
Forum: General Science Questions
Topic: Week 6 homework problems
Replies: 7
Views: 89

Re: Week 6 homework problems

Hw is should cover recent material so probably not any section. you should just stick to the recent topics covered in class
by Jasmine Vallarta 2L
Tue Nov 05, 2019 2:14 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 4s or 3d first?
Replies: 14
Views: 195

Re: 4s or 3d first?

put them in order of "n"; so 3d goes before 4s
by Jasmine Vallarta 2L
Tue Nov 05, 2019 2:13 pm
Forum: Balancing Chemical Reactions
Topic: Balancing This Equation
Replies: 11
Views: 169

Re: Balancing This Equation

When it says "combustion," it is implied that you must add "+ _O2" to the reactant side of the reaction
by Jasmine Vallarta 2L
Tue Nov 05, 2019 2:11 pm
Forum: Octet Exceptions
Topic: placing radicals
Replies: 2
Views: 34

Re: placing radicals

I would use formal charge and see which structure is more stable that way
by Jasmine Vallarta 2L
Thu Oct 31, 2019 3:32 pm
Forum: Trends in The Periodic Table
Topic: blocks
Replies: 13
Views: 108

Re: blocks

We are provided a periodic table, but it wouldn't hurt to know them anyways!
by Jasmine Vallarta 2L
Mon Oct 28, 2019 8:36 pm
Forum: Lewis Structures
Topic: 2B. 1C
Replies: 5
Views: 62

Re: 2B. 1C

F has 7 valence e-, so it can only make 1 single bond. O has 6 valence e-, so it can make a double bond or 2 separate single bonds
by Jasmine Vallarta 2L
Mon Oct 28, 2019 8:35 pm
Forum: Electronegativity
Topic: Calculating Electronegativity
Replies: 3
Views: 40

Re: Calculating Electronegativity

I think we would be provided values of electronegativity but we would just have to calculate electronegativity differences to determine what kind of bond 2 atoms share.
by Jasmine Vallarta 2L
Mon Oct 28, 2019 8:33 pm
Forum: Octet Exceptions
Topic: aufbau principle
Replies: 8
Views: 95

Re: aufbau principle

I think of it as

3d vs 4s
n=3 vs n=4
n=3 is in a lower energy level
by Jasmine Vallarta 2L
Mon Oct 28, 2019 8:29 pm
Forum: Ionic & Covalent Bonds
Topic: Homework 2A23 Help
Replies: 2
Views: 34

Re: Homework 2A23 Help

In2S3
by Jasmine Vallarta 2L
Mon Oct 28, 2019 8:17 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron configuration exceptions
Replies: 2
Views: 46

Re: Electron configuration exceptions

My TA said that we only have to apply the exceptions to Cr and Cu though
by Jasmine Vallarta 2L
Thu Oct 24, 2019 9:41 pm
Forum: Trends in The Periodic Table
Topic: blocks
Replies: 13
Views: 108

Re: blocks

It wouldn't hurt to know it! It'll probably be very helpful
by Jasmine Vallarta 2L
Thu Oct 24, 2019 9:36 pm
Forum: Lewis Structures
Topic: Where to start putting dots for electrons
Replies: 10
Views: 127

Re: Where to start putting dots for electrons

You can just start on any side of the atom
by Jasmine Vallarta 2L
Thu Oct 24, 2019 9:27 pm
Forum: DeBroglie Equation
Topic: hw problem 1B.23
Replies: 4
Views: 70

Re: hw problem 1B.23

it would be easier to convert to meters first as the equations use m and not pm or nm
by Jasmine Vallarta 2L
Thu Oct 24, 2019 9:25 pm
Forum: Lewis Structures
Topic: chemical formulas
Replies: 3
Views: 56

Re: chemical formulas

I'm not sure, but it's a good skill to have in case. There's a section about it in the Fundamentals section of the textbook.
by Jasmine Vallarta 2L
Sun Oct 20, 2019 1:53 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Short Hand
Replies: 11
Views: 93

Re: Short Hand

use the noble gas before the element you are writing the configuration for
by Jasmine Vallarta 2L
Thu Oct 17, 2019 11:49 pm
Forum: Photoelectric Effect
Topic: Quick Question
Replies: 3
Views: 63

Re: Quick Question

I think ionization NRG doesn't involve a light being shined on the element and the photoelectric effect does?
by Jasmine Vallarta 2L
Thu Oct 17, 2019 11:46 pm
Forum: Properties of Light
Topic: 1A.5
Replies: 6
Views: 62

Re: 1A.5

you can try just thinking it out. like which would be stronger: microwave or UV? and just keep going until you have an order. I think for the weakest EM radiation it'll be easy to differentiate. Maybe just memorize after UV or VB light
by Jasmine Vallarta 2L
Thu Oct 17, 2019 11:43 pm
Forum: Properties of Light
Topic: What are the units of hertz
Replies: 41
Views: 339

Re: What are the units of hertz

1/s
by Jasmine Vallarta 2L
Thu Oct 17, 2019 11:37 pm
Forum: Properties of Electrons
Topic: parallel spins
Replies: 3
Views: 55

Re: parallel spins

electron-electron repulsion
by Jasmine Vallarta 2L
Mon Oct 14, 2019 7:29 pm
Forum: Administrative Questions and Class Announcements
Topic: Further Supplements?
Replies: 3
Views: 78

Re: Further Supplements?

I always check khan academy for videos
by Jasmine Vallarta 2L
Fri Oct 11, 2019 11:48 pm
Forum: Molarity, Solutions, Dilutions
Topic: Dilutions
Replies: 10
Views: 358

Re: Dilutions

I would use M(initial) x V(initial) = M(final) x V(final) and just manipulate this formula to get what you need
by Jasmine Vallarta 2L
Fri Oct 11, 2019 11:46 pm
Forum: Photoelectric Effect
Topic: 1B. 21
Replies: 2
Views: 36

Re: 1B. 21

try converting all of your given values into units that you need for each part of the De Broglie EQ:
ex:
convert 5.15 oz into kg
convert 92 mph into m/s

from there, you should be able to multiply the mass of the baseball times the velocity and get the momentum
then plug it into wavelength = h/P
by Jasmine Vallarta 2L
Fri Oct 11, 2019 11:40 pm
Forum: DeBroglie Equation
Topic: q 24
Replies: 2
Views: 29

Re: q 24

because a diffraction pattern is observed, the neutron also has wave-like properties
by Jasmine Vallarta 2L
Tue Oct 08, 2019 11:53 pm
Forum: Empirical & Molecular Formulas
Topic: Molecular to Empirical Formula
Replies: 10
Views: 240

Re: Molecular to Empirical Formula

Usually, you are given the molar mass of the molecular formula. You would have to divide: (molar mass of molecular formula)/(molar mass of empirical formula). You should end up with a whole number as the result. You then multiply that number to the subscripts of the compound, resulting in the molecu...
by Jasmine Vallarta 2L
Tue Oct 08, 2019 11:51 pm
Forum: SI Units, Unit Conversions
Topic: Knowing the atomic mass for test #1
Replies: 4
Views: 58

Re: Knowing the atomic mass for test #1

My TA told us that we would be provided with a periodic table with those values
by Jasmine Vallarta 2L
Fri Oct 04, 2019 12:41 am
Forum: Molarity, Solutions, Dilutions
Topic: Converting Before or After?
Replies: 10
Views: 90

Re: Converting Before or After?

I suggest solving the problem first, which ever way is easiest for you. Then convert the units (if needed) to either fit what's being asked in the question, or if units aren't specified in the question, just convert the units into whatever is easiest to read.
by Jasmine Vallarta 2L
Mon Sep 30, 2019 11:09 pm
Forum: SI Units, Unit Conversions
Topic: Calculator Question
Replies: 13
Views: 221

Re: Calculator Question

From my understanding, no graphing calculators or any calculator that you can program or put notes into. I guess a scientific calculator or even a 4 function calculator if you're brave enough, haha.

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