## Search found 100 matches

Thu Mar 05, 2020 10:28 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Half/Rxn & Balanced Equations for galvanic cells.
Replies: 8
Views: 88

### Re: Half/Rxn & Balanced Equations for galvanic cells.

Pt(s) is added to either the anode or cathode (or even both) when there is no solid metal conductor present.
Thu Mar 05, 2020 10:26 am
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: finding n in G=-nFE
Replies: 15
Views: 232

### Re: finding n in G=-nFE

When you write and balance the half-reactions, the mols of electrons (should be balanced to be the same in both equations) is the number you use as n in the equation.
Thu Mar 05, 2020 10:24 am
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Finding Q
Replies: 7
Views: 122

### Re: Finding Q

Q=anode/cathode. So you can plug in all the values you know for the equation and solve for the unknown.
Thu Mar 05, 2020 10:23 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Platinum in cell diagrams
Replies: 5
Views: 36

### Re: Platinum in cell diagrams

When there isn't a sold metal conductor in the anode or cathode, you need to add Pt(s) to it.
Thu Mar 05, 2020 10:22 am
Forum: Van't Hoff Equation
Topic: Van't Hoff equation
Replies: 10
Views: 244

### Re: Van't Hoff equation

Since the outline says you should be able to derive the equation, I would recommend it. Also, it isn't given on the constants sheet so it is a good thing to know. During a step-up session one of the UA's said that they had to derive the equation on their final.
Thu Feb 27, 2020 10:15 pm
Forum: General Science Questions
Topic: HW Problems for Test 2
Replies: 5
Views: 180

### Re: HW Problems for Test 2

5G (13, 15, 17, 19,21), 5J (11,13,15), 5.55, and 5.61 .
Thu Feb 27, 2020 10:12 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2 Topics
Replies: 5
Views: 98

### Re: Test 2 Topics

Anything in the second page in outline 4 and all of outline 5 can be on the test.
Thu Feb 27, 2020 10:10 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Which half reaction is cathode or anode?
Replies: 6
Views: 371

### Re: Which half reaction is cathode or anode?

Cathode is the reaction that is reduced (gains electron/mass) and anode is the reaction that is oxidized (loses electron/mass).
Thu Feb 27, 2020 10:09 pm
Forum: General Science Questions
Topic: Test 2
Replies: 16
Views: 314

### Re: Test 2

Test 2 covers the second page of outline 4 and all of outline 5.
Thu Feb 27, 2020 10:06 pm
Forum: Administrative Questions and Class Announcements
Topic: UA sessions
Replies: 5
Views: 54

### Re: UA sessions

It depends on the UA. I know that some have said in week 8 sessions that they will be going over test material during the week 9 sessions. However, it is most likely the sessions that are earlier on in the week like Monday and Tuesday.
Mon Feb 24, 2020 1:22 pm
Forum: Administrative Questions and Class Announcements
Topic: Extra Credit
Replies: 17
Views: 227

### Re: Extra Credit

Lavelle does not have any extra credit opportunities. However, the 100 points for doing the homework and chemistry community are an opportunity to get "easy" points to cushion your grade.
Mon Feb 24, 2020 1:21 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: midterm
Replies: 5
Views: 85

### Re: midterm

It depends on the TA and their office hours so I would go ahead and email your TA to work something out.
Mon Feb 24, 2020 1:19 pm
Forum: Balancing Redox Reactions
Topic: Oxidizing/Reducing Agent
Replies: 8
Views: 77

### Re: Oxidizing/Reducing Agent

I just wanted ti share a diagram that helped me differentiate between the two!

Link: https://i.pinimg.com/originals/df/8e/6e ... 30c443.jpg
Mon Feb 24, 2020 1:14 pm
Forum: Balancing Redox Reactions
Topic: Reduction?
Replies: 13
Views: 122

### Re: Reduction?

In a redox reaction, reduction is when it gains electrons and oxidation is when it loses electrons. OIL RIG can help you remember it. Oxidation Is Loss of electrons. Reductions Is Gain of electrons.
Mon Feb 24, 2020 1:09 pm
Forum: Administrative Questions and Class Announcements
Topic: Picking up 14A Finals in Young Hall
Replies: 3
Views: 54

### Re: Picking up 14A Finals in Young Hall

I am unsure, but I think it is unlikely as it was given out in the beginning of January. However, you can try to email your TA from last quarter to see if they still have it or can give it to you.
Sat Feb 15, 2020 10:17 pm
Forum: General Science Questions
Topic: 50 post grade
Replies: 25
Views: 813

### Re: 50 post grade

You should have made 50 posts by the end of the quarter. The grades for these posts are all most together at the end of the quarter.
Sat Feb 15, 2020 10:14 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: spontaneity
Replies: 34
Views: 646

### Re: spontaneity

Gibbs free energy is one of the easiest ways to determine whether a reaction is spontaneous or not. A negative delta G is spontaneous (exergonic) and a positive delta G is not spontaneous (endergonic).
Sat Feb 15, 2020 10:11 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: P1/P2
Replies: 10
Views: 155

### Re: P1/P2

Pressure and volume are inversely related (when volume increases, pressure decreases, and vice versa). Therefore, it is P1/P2 and V2/V1.
Sat Feb 15, 2020 10:10 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Midterm Curve
Replies: 45
Views: 516

### Re: Midterm Curve

To pass the class with a C- you need 250 points. He does not curve individual tests, but he may adjust grades at the end of the quarter depending on the overall class grades.
Sat Feb 15, 2020 10:08 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Balanced Chemical Equations
Replies: 4
Views: 126

### Re: Balanced Chemical Equations

When you balance an equation and it has fractions, you must multiply the whole reaction with a whole number to get rid of the fractions.
Fri Feb 07, 2020 2:31 pm
Forum: Student Social/Study Group
Topic: midterm/final
Replies: 12
Views: 187

### Re: midterm/final

From my experience with him in 14A, the tests are much more straightforwards while the midterm/final are much longer and have more application type problems. Also, it includes more conceptual questions. They are much more difficult, in my opinion.
Fri Feb 07, 2020 2:28 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Equations
Replies: 4
Views: 51

### Re: Equations

My TA stated that we will not have to know how to derive the equations.
Fri Feb 07, 2020 2:25 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Midterm Equations
Replies: 4
Views: 48

### Re: Midterm Equations

The equation sheet that will be on the midterm is on Lavelle's website, so if you see any that are important that aren't on there you should memorize them! Also, you should be able to apply the equations that are given.
Fri Feb 07, 2020 2:24 pm
Forum: Student Social/Study Group
Topic: Midterm Topics
Replies: 12
Views: 165

### Re: Midterm Topics

The midterm covers everything up until Fridays lecture (2/7), which is Outlines 1, 2 , 3, and 4. But only the first page of four and the first set of problems (focus 4).
Fri Feb 07, 2020 2:23 pm
Forum: Student Social/Study Group
Topic: Any Worksheets from UA/TA/etc?
Replies: 14
Views: 289

### Re: Any Worksheets from UA/TA/etc?

The worksheet is posted under "pizza rolls" and the review session will take place on Sunday February 9 from 2-5 pm at Moore 100.
Sun Jan 26, 2020 10:17 pm
Forum: Ideal Gases
Topic: R Constant
Replies: 26
Views: 328

### Re: R Constant

It depends on the units given in the problem.
Sun Jan 26, 2020 10:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Grading of Tests
Replies: 18
Views: 231

### Re: Grading of Tests

I have only received partial credit in the past if it was very close to the actual answer.
Sun Jan 26, 2020 10:15 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Exothermic reaction
Replies: 18
Views: 249

### Re: Exothermic reaction

Exothermic reaction: - increasing the temp will favor formation of reactants
- decreasing the temp will favor formation of products
Sun Jan 26, 2020 10:13 pm
Forum: Student Social/Study Group
Topic: Office Hours
Replies: 5
Views: 191

### Re: Office Hours

I have not been to his office hours, but the UA sessions are very helpful. I like attending the step-up sessions the most, I feel that they help a lot.
Sun Jan 26, 2020 10:10 pm
Forum: Ideal Gases
Topic: R Constant
Replies: 18
Views: 251

### Re: R Constant

The R constant is given on the sheet of constants and equations for the test, so you will not need to memorize it( but familiarize yourself with it).
Sun Jan 26, 2020 10:08 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE
Replies: 20
Views: 174

### Re: ICE

When you are given K(Kc, Ka, Kb, etc.) and need to find the equilibrium concentrations of the molecules, you use the ICE table to find the unknown equilbrium concentrations.
Sun Jan 26, 2020 10:07 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Midterm
Replies: 8
Views: 105

### Re: Midterm

The midterm is week 6, Wednesday February 12 from 6-8.
Sun Jan 26, 2020 10:06 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: exo thermic
Replies: 11
Views: 162

### Re: exo thermic

If temperature is increased during an exothermic reaction, the formation of reactants is favored. If temperature is increased during an endothermic reaction, the formation of products is favored.
Sun Jan 26, 2020 10:03 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Week 4 Homework
Replies: 11
Views: 116

### Re: Week 4 Homework

We are going to be covering outline 4 this week, so homework should be based on that.
Mon Jan 20, 2020 11:18 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: lewis structure
Replies: 11
Views: 95

### Re: lewis structure

I believe he said in a lecture that Chem 14b doesn't have lewis structures.
Mon Jan 20, 2020 11:09 pm
Forum: Administrative Questions and Class Announcements
Topic: test 1/homework
Replies: 4
Views: 84

### Re: test 1/homework

Yes, homework is still due and it should be on acids and bases.
Mon Jan 20, 2020 11:07 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Test 1 material
Replies: 3
Views: 109

### Re: Test 1 material

The test will focus on everything stated in outlines 1 and 2.
Mon Jan 20, 2020 11:06 pm
Forum: Ideal Gases
Topic: homework #3
Replies: 16
Views: 213

### Re: homework #3

I think homework 3 should be focus on acids and bases.
Mon Jan 20, 2020 11:04 pm
Forum: Student Social/Study Group
Topic: Test 1
Replies: 9
Views: 150

### Re: Test 1

There are no practice tests that he hands out, but the homework problems stated in the outlines really help to prepare for the test.You may be able to ask older students for tests.
Mon Jan 20, 2020 10:58 pm
Forum: Ideal Gases
Topic: Acid and Bases
Replies: 16
Views: 144

### Re: Acid and Bases

You got it right. A pH lower than 7 is acidic, a pH higher than 7 is basic, and a pH that is equal to 7 is neutral.
Mon Jan 13, 2020 9:22 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Studying tips
Replies: 10
Views: 70

### Re: Studying tips

I feel that doing ALL of the homework problems assigned are the most helpful because they allow you to know what your strong and weak points are, and how to solve the problems.
Mon Jan 13, 2020 9:18 pm
Forum: Ideal Gases
Topic: Topics for Test 1
Replies: 17
Views: 210

### Re: Topics for Test 1

I would do all of the problems listed in outlines 1 and 2 to really master all of the material.
Mon Jan 13, 2020 9:14 pm
Forum: Administrative Questions and Class Announcements
Topic: Are Lectures Bruincasted?
Replies: 10
Views: 150

### Re: Are Lectures Bruincasted?

None of his lectures are bruincasted, the only way to get notes you missed is from a friend.
Mon Jan 13, 2020 9:13 pm
Forum: Ideal Gases
Topic: Topics on Test 1
Replies: 37
Views: 427

### Re: Topics on Test 1

I believe the test will cover chemical equilibrium up to acids and bases (outlines 1 and 2).
Mon Jan 13, 2020 9:09 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Hw for next week
Replies: 19
Views: 192

### Re: Hw for next week

You can do homework for chemical equilibrium this week, just make sure you don't use the same problems as last week! Also, you can do problems from acids and bases.
Thu Jan 09, 2020 6:12 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Values of K
Replies: 3
Views: 29

### Re: Values of K

If K is larger than 10^3, the mixture contains mostly products. If K is less than 10^-3, the mixture contains mostly reactants. If K is about equal to 1, the reaction will reach equilibrium as an intermediate mixture, meaning the amounts of products and reactants will be about the same. Also, here's...
Thu Jan 09, 2020 6:07 pm
Forum: Administrative Questions and Class Announcements
Topic: 6th edition and homework problems
Replies: 3
Views: 49

### Re: 6th edition and homework problems

I would recommend getting the 7th edition because the problems can be quite different in the 6th edition. Also, my TA today had said that he thinks we should all have the 7th edition because they have completely transitioned from the 6th edition to the newer one.
Thu Jan 09, 2020 6:05 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Small K value and Large K value
Replies: 10
Views: 110

### Re: Small K value and Large K value

This image helped to understand better.

https://image.slidesharecdn.com/chemica ... 1331539456
Thu Jan 09, 2020 6:00 pm
Forum: Administrative Questions and Class Announcements
Topic: Sapling Learning
Replies: 9
Views: 117

### Re: Sapling Learning

Sapling learning is just an extra resource to help you, but it does not count toward any grade and is not mandatory.
Thu Jan 09, 2020 5:58 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework 1
Replies: 18
Views: 255

### Re: Homework 1

The first homework assignment is due on Friday (tomorrow) to your TA after lecture. All other homework assignments after week 1 are due in your discussion section.
Mon Dec 02, 2019 5:54 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: What to know for the final
Replies: 8
Views: 118

### Re: What to know for the final

I would focus on the concepts in all of the outlines only.
Mon Dec 02, 2019 5:54 pm
Forum: Student Social/Study Group
Topic: Final Review Sessions
Replies: 7
Views: 196

### Re: Final Review Sessions

Lyndon's session is Friday December 6 at 7:30-10pm in Haines 39.
Mon Dec 02, 2019 5:46 pm
Forum: General Science Questions
Topic: test taking nervousness
Replies: 19
Views: 317

### Re: test taking nervousness

I find it helpful to skip through and find the questions I know how to do first and then come back to the ones I am confused about because you slowly start recalling the material as times goes on.
Mon Dec 02, 2019 5:45 pm
Forum: General Science Questions
Topic: Bruincasts
Replies: 9
Views: 284

### Re: Bruincasts

The only way to get his class notes are to ask a friend for them.
Mon Dec 02, 2019 5:42 pm
Forum: Administrative Questions and Class Announcements
Topic: Final tips
Replies: 19
Views: 312

### Re: Final tips

I would recommend going over the notes, completing the homework problems, reviewing past tests (including the midterm), and attending the review sessions that professor has setup.
Mon Nov 25, 2019 11:45 pm
Forum: Sigma & Pi Bonds
Topic: sigma and pi bonds
Replies: 19
Views: 446

### Re: sigma and pi bonds

single bond: 1 sigma, 0 pi
double bond: 1 sigma, 1 pi
triple bond: 1 sigma, 2 pi
Mon Nov 25, 2019 11:43 pm
Forum: Student Social/Study Group
Topic: Test 2 and Final
Replies: 18
Views: 226

### Re: Test 2 and Final

The final covers the topics of the entire class, it is cumulative.
Mon Nov 25, 2019 11:43 pm
Forum: Hybridization
Topic: sigma or pi?
Replies: 20
Views: 281

### Re: sigma or pi?

single bond: 1 sigma, o pi
double bond: 1 sigma, 1 pi
triple bond: 1 sigma, 2 pi
Mon Nov 25, 2019 11:40 pm
Forum: Administrative Questions and Class Announcements
Topic: Material for the final exam
Replies: 4
Views: 62

### Re: Material for the final exam

If it is like the midterm, I assume we will not learn anything new on the last lecture before the final.
Mon Nov 25, 2019 11:37 pm
Forum: Bond Lengths & Energies
Topic: Boiling point
Replies: 11
Views: 287

### Re: Boiling point

The larger the molar mass, the higher the boiling point.
Mon Nov 18, 2019 9:06 pm
Forum: Hybridization
Topic: Test 2
Replies: 11
Views: 137

### Re: Test 2

The test covers up until sigma and pi bonds, which he covered in the beginning of lecture today.
Mon Nov 18, 2019 9:00 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: AXE formula
Replies: 9
Views: 84

### Re: AXE formula

A is the central atom, X is the attached atoms, and E is the lone pairs.
Mon Nov 18, 2019 8:57 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2
Replies: 7
Views: 95

### Re: Test 2

They have been saying bent, but the book says angular so I think either would work.
Mon Nov 18, 2019 8:56 pm
Forum: Dipole Moments
Topic: Dipole moments
Replies: 3
Views: 60

### Re: Dipole moments

The dipoles in the linear CO2 cancel each other out, making it non-polar. The visual: https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=2ahUKEwj8vpSevvXlAhXN6Z4KHQVOCCQQjRx6BAgBEAQ&url=https%3A%2F%2Fwww.quora.com%2FIs-CO2-non-polar&psig=AOvVaw0jUwo...
Mon Nov 18, 2019 4:22 pm
Forum: Administrative Questions and Class Announcements
Topic: Test 2 Length
Replies: 9
Views: 104

### Re: Test 2 Length

Just to make sure, hybridization is not on the test right?
Tue Nov 12, 2019 1:03 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Homework for Week 7
Replies: 5
Views: 65

### Re: Homework for Week 7

Homework for week 7 should be on the chemical bonds outline because it was the last thing we learned before the midterm, specifically focus 3F.
Tue Nov 12, 2019 1:01 pm
Forum: General Science Questions
Topic: Test 2
Replies: 20
Views: 257

### Re: Test 2

It should cover topics that we learn after the midterm.
Tue Nov 12, 2019 12:58 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Test Policy
Replies: 6
Views: 211

### Re: Test Policy

I think it's okay to put the number next to the atom because that's what a lot of the TAs did during discussion and review sessions.
Tue Nov 12, 2019 12:53 pm
Forum: Bond Lengths & Energies
Topic: Week 7 Homework
Replies: 15
Views: 229

### Re: Week 7 Homework

I believe the homework is the section of chemical bonds because that's we ended with before the midterm.
Tue Nov 12, 2019 12:52 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 7 Homework
Replies: 7
Views: 105

### Re: Week 7 Homework

I would say it is on the section of chemical bonds because that's what we ended with before the midterm.
Tue Nov 05, 2019 1:33 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Electron Configuration
Replies: 5
Views: 88

### Re: Midterm Electron Configuration

Professor Lavelle told us to primarily look at the s-block, p-block, and first row of d-block for this class, so I wouldn't worry too much about it.
Tue Nov 05, 2019 1:31 pm
Forum: Bond Lengths & Energies
Topic: Midterm
Replies: 8
Views: 129

### Re: Midterm

There will be 8 questions for the 2-hour midterms, but I am positive that they will all have multiple parts like the practice problems we have seen.
Tue Nov 05, 2019 1:28 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 4s or 3d first?
Replies: 14
Views: 361

### Re: 4s or 3d first?

4s comes before the 3d on the periodic table, which is why you might want to write the electron configuration in that order. However, we have been told write it out in order of the energy of the subshells (low-high energy).
Tue Nov 05, 2019 1:26 pm
Forum: Administrative Questions and Class Announcements
Topic: Class Wed 11/6
Replies: 3
Views: 52

### Re: Class Wed 11/6

There are no lectures on the day of the midterm, Wednesday 11/6/19. However, they did not clarify if there is discussion or not.
Tue Nov 05, 2019 1:20 pm
Forum: Lewis Structures
Topic: Midterm
Replies: 3
Views: 64

### Re: Midterm

Everything up to Focus 2D and last Friday's lecture will be on the midterm.
Mon Oct 28, 2019 1:06 pm
Forum: General Science Questions
Topic: homework
Replies: 5
Views: 89

### Re: homework

The homework due this week in discussion is on the section of chemical bonds.
Mon Oct 28, 2019 1:02 pm
Forum: Ionic & Covalent Bonds
Topic: delocalization
Replies: 3
Views: 43

### Re: delocalization

Delocalization occurs when electric charge is spread over more than one atom. Benzene is a good example of this:
https://www.chemicool.com/images/benzen ... alized.png.
Mon Oct 28, 2019 12:57 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Multi-electron atoms
Replies: 6
Views: 82

### Re: Multi-electron atoms

Nodal planes are the area around atomic nuclei where the probability of finding electrons is zero.
Mon Oct 28, 2019 12:55 pm
Forum: Administrative Questions and Class Announcements
Topic: Class Cancelled Due To Fire?!?
Replies: 4
Views: 101

### Re: Class Cancelled Due To Fire?!?

Classes are cancelled today. As for evacuation, the alerts say that the fire is not a threat to campus as of now.
Mon Oct 28, 2019 12:52 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bonds confusion
Replies: 7
Views: 107

### Re: Ionic Bonds confusion

Metals can only give electrons (e-) to nonmetals.
Mon Oct 21, 2019 5:23 pm
Forum: Balancing Chemical Reactions
Topic: Balancing equations.
Replies: 35
Views: 538

### Re: Balancing equations.

I would say to balance the element that occurs the least and work your way up to the one that occurs the most. And always remember to double check that you successfully balanced the equation without any mistakes because it is easy to accidentally ignore an element.
Mon Oct 21, 2019 5:20 pm
Forum: Properties of Light
Topic: Chemistry Community Posts
Replies: 10
Views: 332

### Re: Chemistry Community Posts

We are supposed post 5 times a week for 5 points. The posts are due by Sunday every week to get the full points.
Mon Oct 21, 2019 5:14 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: orbitals
Replies: 5
Views: 73

### Re: orbitals

I believe my TA said that we do not need to be too concerned with drawing the different orbitals, but I am still familiarizing myself with them just in case.
Mon Oct 21, 2019 5:11 pm
Forum: Student Social/Study Group
Topic: Week 4 HW Problems
Replies: 7
Views: 136

### Re: Week 4 HW Problems

I find it helpful to focus on the quantum world homework for now, as we barely started the topic of chemical bonds.
Mon Oct 21, 2019 5:03 pm
Forum: SI Units, Unit Conversions
Topic: Unit conversion
Replies: 15
Views: 529

### Re: Unit conversion

It completely depends on what unit you are converting to/from but you would use a find the conversion for one unit, multiply your number by the conversion fraction, and cancel out the units.
Mon Oct 14, 2019 11:40 pm
Forum: Student Social/Study Group
Replies: 4
Views: 80

### Re: Textbook Readings

Personally, the textbooks readings are only helpful to me when I am stuck on a homework problem. Other than that, the modules, homework problems, and lecture notes help me better.
Mon Oct 14, 2019 11:38 pm
Forum: Properties of Light
Topic: MidTerms and Finals
Replies: 11
Views: 131

### Re: MidTerms and Finals

Only tests 1 and 2 are administered in our discussion sessions. The midterm and final will not. The midterm is Wednesday November 6 6-8 pm and the final is Sunday December 8 11:30 am -2:30 pm.
Mon Oct 14, 2019 11:34 pm
Forum: *Shrodinger Equation
Topic: No More Audio Visuals After Heisenberg?
Replies: 2
Views: 58

### Re: No More Audio Visuals After Heisenberg?

I have been using those modules for additional help too! Unfortunately, I think that there aren't anymore after these. The only ones online are from the past section and some of this section.
Mon Oct 14, 2019 11:29 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Best Way To Study?
Replies: 56
Views: 1178

### Re: Best Way To Study?

Personally, doing the online modules, reading the book, and doing all of the homework problems listed in the outline have helped me the best.
Mon Oct 14, 2019 11:27 pm
Forum: *Shrodinger Equation
Topic: Midterm
Replies: 14
Views: 465

### Re: Midterm

As stated on the syllabus there are 2 tests, 1 midterm, and 1 final. We have already taken one test. The midterm is on Wednesday, November 6 from 6-8 pm. Test 2 is starting Tuesday, November 19 in discussion session. The final is Sunday, December 8 from 11:30 am-2:30 pm.
Wed Oct 09, 2019 10:39 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Test 1 [ENDORSED]
Replies: 107
Views: 5116

### Re: Test 1[ENDORSED]

No, for this test all you need to bring is a pen and a SCIENTIFIC calculator. They will provide the test, a periodic table, and list of constants.
Wed Oct 09, 2019 10:37 pm
Forum: Einstein Equation
Topic: Numbers to memorize [ENDORSED]
Replies: 37
Views: 1760

### Re: Numbers to memorize[ENDORSED]

They will give a list of constants and a periodic table.
Wed Oct 09, 2019 10:33 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Wrong Textbook
Replies: 12
Views: 468

### Re: Wrong Textbook

I have seen both textbooks and the problems are more or less the same, but I would play it safe and just get the 7th edition to make sure that you are doing the correct homework problems for full credit.
Wed Oct 09, 2019 10:30 pm
Forum: SI Units, Unit Conversions
Topic: Practice Problems?
Replies: 11
Views: 242

### Re: Practice Problems?

I did all of the problems that were listed in the outline and I felt that it allowed me to understand the topics better.
Wed Oct 09, 2019 10:27 pm
Forum: SI Units, Unit Conversions
Topic: Test 1
Replies: 9
Views: 216

### Re: Test 1

The test covers the topics that Dr. Lavelle has included in his outline:

https://lavelle.chem.ucla.edu/wp-conten ... ciples.pdf
Mon Sep 30, 2019 9:41 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Accuracy vs Precision
Replies: 10
Views: 194

### Re: Accuracy vs Precision

Professor Lavelle used this picture:
http://cdn.antarcticglaciers.org/wp-con ... curacy.png
on his powerpoint which I felt was very helpful in understanding the difference between the two.
Mon Sep 30, 2019 9:34 pm
Forum: Significant Figures
Topic: Rounding significant figures when it comes to elements of the periodic table
Replies: 6
Views: 92

### Re: Rounding significant figures when it comes to elements of the periodic table

I would recommend not rounding the number and using the exact number from the periodic table to get the most accurate answer.
Mon Sep 30, 2019 8:30 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 198
Views: 140479

### Re: Rusty on High School Chem[ENDORSED]

I'm in a similar situation, I have not taken chemistry since my sophomore year of high school and this is my first year of college. However, I think using ALL of the resources we have available to us is imperative. Professor Lavelle has mentioned that there are 32 hours of assistance each week and y...
Mon Sep 30, 2019 8:21 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice on Homework
Replies: 13
Views: 234

### Re: Advice on Homework

Even though we only have to turn in five questions, I think it is good practice to do most of the other problems.
Mon Sep 30, 2019 8:18 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical Formula
Replies: 7
Views: 96

### Empirical Formula

When using the empirical formula do we always assume that the sample mass is 100g?

Go to advanced search