Search found 23 matches
- Fri Dec 08, 2017 1:02 pm
- Forum: DeBroglie Equation
- Topic: Concept of deBroglie
- Replies: 3
- Views: 514
Re: Concept of deBroglie
Its because light has no mass. Hopefully this helped.
- Fri Dec 08, 2017 12:59 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final exam [ENDORSED]
- Replies: 7
- Views: 1021
Re: Final exam [ENDORSED]
I would definitely use fundamental J as a great study tool for the final.
- Sat Dec 02, 2017 9:46 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Solids when using ICE [ENDORSED]
- Replies: 8
- Views: 3386
Re: Solids when using ICE [ENDORSED]
We do not use solids and liquids in the ICE method.
- Sat Dec 02, 2017 9:44 am
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Strong acid vs weak acid [ENDORSED]
- Replies: 7
- Views: 1077
Re: Strong acid vs weak acid [ENDORSED]
A strong acid will completely ionize in solution, whereas a weak acid will not and it is actually reversible.
- Fri Nov 24, 2017 9:31 pm
- Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
- Topic: Test 4 Topic: Le Chatelier's Principle
- Replies: 1
- Views: 393
Re: Test 4 Topic: Le Chatelier's Principle
I think we should prepare for it, just to be safe.
- Fri Nov 24, 2017 12:14 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Partial Pressure or Concentration
- Replies: 3
- Views: 424
Re: Partial Pressure or Concentration
Yeah, I do not know the difference either. Can someone please explain.
- Fri Nov 24, 2017 12:13 pm
- Forum: Administrative Questions and Class Announcements
- Topic: What is a passing grade? [ENDORSED]
- Replies: 4
- Views: 1341
Re: What is a passing grade? [ENDORSED]
I believe it guarantees a C- and I am not sure about the curve.
- Sat Nov 18, 2017 9:07 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent or linear?
- Replies: 11
- Views: 2020
Re: Bent or linear?
Yeah, I agree, if the central atom does not have any lone pairs, then it would be linear.
- Sat Nov 18, 2017 9:01 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lewis Structures and VSEPR Shape
- Replies: 4
- Views: 600
Re: Lewis Structures and VSEPR Shape
Yes, drawing out the lewis structure is great tool in determining the shape of the given molecule.
- Sat Nov 11, 2017 9:24 pm
- Forum: Empirical & Molecular Formulas
- Topic: Practice Midterm Question
- Replies: 4
- Views: 647
Re: Practice Midterm Question
Is the molar mass of the substance given? If so you could multiply all the percentages by the total and then divide by the molar mass of each particular substance. That will get you the molecular formula. Hope this helps.
- Sat Nov 11, 2017 9:21 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Shape Memorization [ENDORSED]
- Replies: 7
- Views: 1988
Re: Shape Memorization [ENDORSED]
I agree the best way to memorize all of these different structures is to arrange the electrons by the total number of bonds in each geometry.
- Sun Nov 05, 2017 4:29 pm
- Forum: Trends in The Periodic Table
- Topic: why carbon has a higher electron affinity than nitrogen.
- Replies: 5
- Views: 7664
Re: why carbon has a higher electron affinity than nitrogen.
Nitrogen is more stable than carbon, because it has a half-filled p sub-shell and carbon does not, thus making it less stable and having a higher electroon affinity.
- Sun Nov 05, 2017 4:21 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: d and s blocks
- Replies: 16
- Views: 2211
Re: d and s blocks
The d block is listed before the s block because it is more stable and represents the flow the of energy.
- Sun Oct 29, 2017 2:10 am
- Forum: Properties of Light
- Topic: The uncertainty principle [ENDORSED]
- Replies: 5
- Views: 828
Re: The uncertainty principle [ENDORSED]
I agree with Ashin_Jose_1I the large particles tend to have no noticeable effect and with small particles, there is a huge uncertainty because its so small any little thing can have a huge impact on it.
- Sun Oct 29, 2017 2:03 am
- Forum: Significant Figures
- Topic: no Sig Figs in question [ENDORSED]
- Replies: 4
- Views: 856
Re: no Sig Figs in question [ENDORSED]
I believe you would record how many ever sig figs your calculator can handle.
- Sun Oct 22, 2017 8:29 pm
- Forum: DeBroglie Equation
- Topic: When to use De Broglie Equation [ENDORSED]
- Replies: 11
- Views: 5223
Re: When to use De Broglie Equation [ENDORSED]
Debroglie is used for electrons, so one can find their wavelength.
- Fri Oct 20, 2017 10:37 pm
- Forum: Einstein Equation
- Topic: Chapter 1 #23
- Replies: 6
- Views: 1235
Re: Chapter 1 #23
1.602*10^-19 is just a conversion factor in order to go from eV to joules.
- Fri Oct 20, 2017 10:31 pm
- Forum: Einstein Equation
- Topic: Question about Ek
- Replies: 3
- Views: 529
Re: Question about Ek
The square only applies to the v. Hope this helps.
- Sat Oct 14, 2017 10:14 am
- Forum: Einstein Equation
- Topic: Discussion Section Problem
- Replies: 8
- Views: 771
Re: Discussion Section Problem
I believe Julia is correct. We can simply plug the frequency in to the equation E=hv.
- Sat Oct 14, 2017 10:10 am
- Forum: Einstein Equation
- Topic: Ek = 1/2 me v^2
- Replies: 3
- Views: 659
Re: Ek = 1/2 me v^2
In this equation, the mass of an electron will always be 9.109 x 10^-31 kg.
- Sat Oct 14, 2017 10:07 am
- Forum: Properties of Light
- Topic: Balmer and Lyman Clarification [ENDORSED]
- Replies: 3
- Views: 487
Re: Balmer and Lyman Clarification [ENDORSED]
I believe that Balmer and Lyman series are specific to the hydrogen atom. Hope this helps.
- Sat Oct 07, 2017 1:03 am
- Forum: Balancing Chemical Reactions
- Topic: Net Moles Produced [ENDORSED]
- Replies: 5
- Views: 900
Re: Net Moles Produced [ENDORSED]
All you do is count up the moles of the products and subtract by the moles of the reactants and that is your net moles.
- Sat Oct 07, 2017 12:53 am
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Rounding Rule for 5
- Replies: 5
- Views: 1126
Re: Rounding Rule for 5
This is done to avoid rounding errors, by telling everyone on how a number ending in a five should be rounded off to the closest even number. It makes calculations much more simple when everyone does round in the same manner.