Search found 43 matches

by Ronald Thompson 1F
Sun Feb 10, 2019 2:17 pm
Forum: Calculating Work of Expansion
Topic: Using Derivative/Integral Equations
Replies: 5
Views: 14

Re: Using Derivative/Integral Equations

You will not need to solve integrations. Just know what equations you get from the integrations. Those are applicable to different questions and the circumstances
by Ronald Thompson 1F
Sun Feb 10, 2019 2:16 pm
Forum: Administrative Questions and Class Announcements
Topic: UA Sessions Today
Replies: 2
Views: 25

Re: UA Sessions Today

Check Lavelle's website for all updates, review times, and more
by Ronald Thompson 1F
Sun Feb 10, 2019 2:15 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Midterm #1 14B
Replies: 12
Views: 103

Re: Midterm #1 14B

Is there a solutions guide as well?
by Ronald Thompson 1F
Sun Feb 10, 2019 2:15 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: Degeneracy
Replies: 4
Views: 19

Re: Degeneracy

You have to look at the number of different arrangements of atoms. Best way is to draw lewis structures
by Ronald Thompson 1F
Sun Feb 03, 2019 2:25 pm
Forum: Phase Changes & Related Calculations
Topic: Steam resulting in burns?
Replies: 6
Views: 26

Re: Steam resulting in burns?

Steam at 100 degrees gives off a lot more heat, thus burns more. There is a chart in the textbook that explains it much better
by Ronald Thompson 1F
Sun Feb 03, 2019 2:22 pm
Forum: Calculating Work of Expansion
Topic: Units for pressure
Replies: 10
Views: 28

Re: Units for pressure

For a final answer I believe you want to use atm unless otherwise stated. You might have to do some conversions (Torr to atm)
by Ronald Thompson 1F
Sun Feb 03, 2019 2:18 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimeter
Replies: 6
Views: 24

Re: Calorimeter

Focus on the processes behind the calorimeter example.
by Ronald Thompson 1F
Sun Feb 03, 2019 2:16 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Midterm Exam Content
Replies: 4
Views: 26

Re: Midterm Exam Content

Look at the course website for the update/rundown
by Ronald Thompson 1F
Tue Jan 29, 2019 11:52 am
Forum: Calculating Work of Expansion
Topic: reversible process
Replies: 3
Views: 19

Re: reversible process

Yes, R is the same because it is a constant. It will be given on the constants and equations sheet
by Ronald Thompson 1F
Tue Jan 29, 2019 11:50 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: eq constants for acids
Replies: 4
Views: 16

Re: eq constants for acids

Yes, because strong acids dissociate completely
by Ronald Thompson 1F
Sun Jan 20, 2019 5:58 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Water in the Equilibrium Constant.
Replies: 4
Views: 15

Re: Water in the Equilibrium Constant.

We don't pay much attention to liquids and solids in this regard
by Ronald Thompson 1F
Sun Jan 20, 2019 5:56 pm
Forum: Student Social/Study Group
Topic: test 1
Replies: 9
Views: 39

Re: test 1

Test 1 will cover Equilibuium and Acid and Base equilibrium as stated by the announcements
by Ronald Thompson 1F
Mon Jan 14, 2019 9:16 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kc, Kw, and pKw
Replies: 4
Views: 33

Re: Kc, Kw, and pKw

These will be important to memorize, as they do not show up on the constants and equations sheet.
by Ronald Thompson 1F
Mon Jan 14, 2019 9:14 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: change in pressure
Replies: 4
Views: 36

Re: change in pressure

The Process works in both directions depending on the moles of gas on either side.
by Ronald Thompson 1F
Fri Dec 07, 2018 11:06 pm
Forum: Hybridization
Topic: Sigma and pi bonds
Replies: 4
Views: 37

Re: Sigma and pi bonds

I believe he just wants the hybridization of the central atom or whatever atoms he asks. However just incase wouldn't hurt to do a couple of practice problems
by Ronald Thompson 1F
Fri Dec 07, 2018 11:03 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Function of polydentate ligand
Replies: 2
Views: 21

Re: Function of polydentate ligand

You can bond multiple atoms.
by Ronald Thompson 1F
Fri Dec 07, 2018 11:02 pm
Forum: Naming
Topic: Chloro v/s chlorido
Replies: 6
Views: 49

Re: Chloro v/s chlorido

You would use an elements base name for prefix and suffix of coordination compound.
by Ronald Thompson 1F
Thu Dec 06, 2018 5:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Topics
Replies: 3
Views: 51

Re: Final Topics

From what I have seen from two practice exams it is an even breakdown. Most will incorporate many topics into multi-step problems
by Ronald Thompson 1F
Sun Dec 02, 2018 3:22 pm
Forum: Naming
Topic: With Respect to the Final
Replies: 9
Views: 92

Re: With Respect to the Final

It is best to be comfortable with both. It will only help
by Ronald Thompson 1F
Mon Nov 26, 2018 9:33 pm
Forum: Dipole Moments
Topic: TEST 3: Polarity
Replies: 7
Views: 82

Re: TEST 3: Polarity

Arrows point to the atom with the negative charge.
by Ronald Thompson 1F
Mon Nov 26, 2018 9:31 pm
Forum: Administrative Questions and Class Announcements
Topic: Textbook
Replies: 3
Views: 36

Re: Textbook

Yes, the textbook if for both classes
by Ronald Thompson 1F
Mon Nov 26, 2018 9:29 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Homework question
Replies: 4
Views: 27

Re: Homework question

Formal charge.
by Ronald Thompson 1F
Mon Nov 26, 2018 9:29 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Most Favorable Placement of Formal Charges
Replies: 2
Views: 38

Re: Most Favorable Placement of Formal Charges

I believe for the purposes of this class the spread of the charges doesn't quite matter. I do not recall coming across a problem where the two possibilities have the same formal charge.
by Ronald Thompson 1F
Sun Nov 04, 2018 8:18 pm
Forum: Lewis Structures
Topic: Double bonds vs. lone pairs
Replies: 5
Views: 29

Re: Double bonds vs. lone pairs

Count the total valence electrons and arrange them in a ways that satisfies the elements' octect.
by Ronald Thompson 1F
Sun Nov 04, 2018 8:16 pm
Forum: Ionic & Covalent Bonds
Topic: Test bank?
Replies: 9
Views: 108

Re: Test bank?

Also try reaching out to past students who have taken the class
by Ronald Thompson 1F
Sun Nov 04, 2018 8:15 pm
Forum: Administrative Questions and Class Announcements
Topic: Monday review sessions
Replies: 2
Views: 53

Re: Monday review sessions

I would assume there would be different problems, but if not there's no hurt in the extra practice.
by Ronald Thompson 1F
Sun Oct 28, 2018 9:36 pm
Forum: Ionic & Covalent Bonds
Topic: Good practice options for lewis structures?
Replies: 3
Views: 34

Re: Good practice options for lewis structures?

You could look up common bonds and try drawing them out yourself as practice.
by Ronald Thompson 1F
Sun Oct 28, 2018 9:35 pm
Forum: Trends in The Periodic Table
Topic: s-block and p-block reactivity?
Replies: 6
Views: 51

Re: s-block and p-block reactivity?

Yes, having lower ionization makes it easier for them to gain or lose electrons.
by Ronald Thompson 1F
Sun Oct 28, 2018 9:33 pm
Forum: Ionic & Covalent Bonds
Topic: Difference Between Ionic and Covalent Bonds
Replies: 4
Views: 32

Re: Difference Between Ionic and Covalent Bonds

You can also tell by where the atoms are on the periodic table.
by Ronald Thompson 1F
Sun Oct 21, 2018 7:37 pm
Forum: DeBroglie Equation
Topic: 1B. 25 7th Edition
Replies: 2
Views: 33

Re: 1B. 25 7th Edition

Great explanation
by Ronald Thompson 1F
Sun Oct 21, 2018 7:33 pm
Forum: Properties of Electrons
Topic: Calculate energy required to remove an electron
Replies: 6
Views: 1561

Re: Calculate energy required to remove an electron

10^5? I thought you would just convert from KJ to J?
by Ronald Thompson 1F
Sun Oct 21, 2018 7:30 pm
Forum: Photoelectric Effect
Topic: Test #2
Replies: 9
Views: 147

Re: Test #2

There's also a list on the 14a quantum world breakdown detailing everything you will need to know how to do for the test.
by Ronald Thompson 1F
Sun Oct 21, 2018 7:28 pm
Forum: Quantum Numbers and The H-Atom
Topic: spin magnetic quantum number
Replies: 2
Views: 20

Re: spin magnetic quantum number

I believe it is because the spin quantum number has a magnitude of 1/2 in either a positive or negative direction.
by Ronald Thompson 1F
Sat Oct 13, 2018 2:41 pm
Forum: Administrative Questions and Class Announcements
Topic: Required knowledge for test/midterm [ENDORSED]
Replies: 13
Views: 235

Re: Required knowledge for test/midterm [ENDORSED]

On his site I believe he has the sheet with all the equations he will give. To play it safe, if it isn't on the sheet you may want to try and remember it.
by Ronald Thompson 1F
Sat Oct 13, 2018 2:40 pm
Forum: DeBroglie Equation
Topic: De Broglie wavelength - when can it be seen
Replies: 5
Views: 37

Re: De Broglie wavelength - when can it be seen

In class he used an example where the wavelength was measured at 1.64 x 10^-38m which is unmeasurable,
However an example with a wavelength of 1.4 x 10^-10m was
by Ronald Thompson 1F
Sat Oct 13, 2018 2:37 pm
Forum: DeBroglie Equation
Topic: De Broglie wavelength - when can it be seen
Replies: 5
Views: 37

Re: De Broglie wavelength - when can it be seen

I believe he was reffering to measurable wavelike properties. If the calculated wavelength could be experimentally seen in a lab.
by Ronald Thompson 1F
Sat Oct 13, 2018 2:29 pm
Forum: Molarity, Solutions, Dilutions
Topic: Molarity and Dilution
Replies: 8
Views: 1435

Re: Molarity and Dilution

If done correctly, should I have gotten 5.92?
I also was not entirely sure how to implement Mi x Vi = Mf x Vf
by Ronald Thompson 1F
Sun Oct 07, 2018 2:49 pm
Forum: Limiting Reactant Calculations
Topic: Limiting reagents
Replies: 12
Views: 120

Re: Limiting reagents

Yes there can be more than one depending on each step of the reaction
by Ronald Thompson 1F
Sun Oct 07, 2018 2:46 pm
Forum: Empirical & Molecular Formulas
Topic: When to double moles
Replies: 13
Views: 119

Re: When to double moles

Divide by the smallest value, then usually the decimals are close enough to whole numbers that it is best to just round. There are special cases however
by Ronald Thompson 1F
Thu Oct 04, 2018 11:03 am
Forum: Empirical & Molecular Formulas
Topic: Converting from Molecular to Empirical Formulas
Replies: 2
Views: 57

Re: Converting from Molecular to Empirical Formulas

Yes that is the way to go. However, if in a problem the molecular formula cannot be reduced then that is also the empirical formula.

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