Search found 100 matches

by ShastaB4C
Wed Mar 11, 2020 12:14 am
Forum: Method of Initial Rates (To Determine n and k)
Topic: Tangent
Replies: 3
Views: 51

Re: Tangent

You don’t usually need to find the tangent of the graph bc if you graphed they concentrations accordingly by their order, then the graph is linear so u just look in respect to its slope.
by ShastaB4C
Wed Mar 11, 2020 12:09 am
Forum: Method of Initial Rates (To Determine n and k)
Topic: k' vs kr
Replies: 13
Views: 122

Re: k' vs kr

Is k’ and k prime have to be positive right? Like just because k’ is the reverse reaction doesn’t mean it has a negative sign
by ShastaB4C
Wed Mar 11, 2020 12:08 am
Forum: Method of Initial Rates (To Determine n and k)
Topic: Memorization?
Replies: 4
Views: 69

Re: Memorization?

So derivations may come in handy based on the information given?
by ShastaB4C
Wed Mar 11, 2020 12:05 am
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 282
Views: 134698

Re: Saying Thank You to Dr. Lavelle

This is an old forum, but I just wanted to say a genuine thank you to Lavelle for your good spirit, willingness to help, and accommodation to you students in this transition period. It is truly appreciated.
by ShastaB4C
Tue Mar 10, 2020 8:49 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: Memorization?
Replies: 4
Views: 69

Memorization?

Do we have to memorize the integrated rate law formulas for each order or how to derive them?
by ShastaB4C
Tue Mar 10, 2020 8:48 pm
Forum: Administrative Questions and Class Announcements
Topic: ENDGAME Review Session
Replies: 71
Views: 2748

Re: ENDGAME Review Session

You are literally the only reason I made it through 14A/B lol. Thank you soooo much
by ShastaB4C
Mon Mar 02, 2020 10:25 pm
Forum: Balancing Redox Reactions
Topic: reversing the anode or cathode reaction [ENDORSED]
Replies: 5
Views: 173

Re: reversing the anode or cathode reaction [ENDORSED]

Please post the question so we can better assist you, but in general, you will be given standard reduction potentials. The half reaction with the less positive standard reduction potential will tend to be oxidized rather than reduced, and that is the one that would be flipped to take place at the a...
by ShastaB4C
Mon Mar 02, 2020 10:20 pm
Forum: Balancing Redox Reactions
Topic: 6L.3e
Replies: 1
Views: 35

6L.3e

Can someone explain each species on the cathode side of the reaction and why it’s written in this notation?
by ShastaB4C
Mon Mar 02, 2020 9:29 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 6L.3d
Replies: 4
Views: 80

Re: 6L.3d

You would write the half-reaction without Pt(s), since it simply serves as a solid electrode for the cell diagram. Because a reduction reaction is occurring in the anode, there is a gain of electrons added to O2(g) as it also reacts with water, H2O(l) to produce hydroxide, OH-(aq). So the anode hal...
by ShastaB4C
Mon Mar 02, 2020 9:06 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 6L
Replies: 2
Views: 38

Re: 6L

Maybe the solution manual just put it to explain it??
by ShastaB4C
Mon Mar 02, 2020 8:26 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 6L
Replies: 2
Views: 38

6L

Where in the question specifies needing to find the E cell for the reaction?
by ShastaB4C
Sun Mar 01, 2020 10:52 pm
Forum: Balancing Redox Reactions
Topic: 6K.5 part b
Replies: 4
Views: 59

Re: 6K.5 part b

You solve these how you normally would balance in a basic solution. Also, If you need help figuring out why each species in the product is which, look at how the oxidation number of the Br in them change.
I hope this helps!!
by ShastaB4C
Sun Mar 01, 2020 10:51 pm
Forum: Balancing Redox Reactions
Topic: 6K.5 part b
Replies: 4
Views: 59

Re: 6K.5 part b

Hi!

The Br2 is acting as both an oxidizing and reducing agent. So the first half rxn is an oxidation from Br2–> BrO3 ^-2. The second half rxn is a reduction from Br2–> 2Br-
by ShastaB4C
Sun Mar 01, 2020 10:46 pm
Forum: Balancing Redox Reactions
Topic: Acidic vs. Basic Solutions
Replies: 8
Views: 120

Re: Acidic vs. Basic Solutions

You pretty much follow the same process, but the basic solution has a few more steps.

I posted this video I found helpful in another forum but I’ll attach it here in case you may find it helpful!

https://youtu.be/v5sDNmYCaqo
by ShastaB4C
Sun Mar 01, 2020 10:43 pm
Forum: Balancing Redox Reactions
Topic: When to add H+ or H20
Replies: 19
Views: 280

Re: When to add H+ or H20

ShastaB4C wrote:Also, these videos really helped me out. He goes step by step teaching how to balance redox in non-neutral solutions.https://youtu.be/IZ1tKxsqV74

https://youtu.be/v5sDNmYCaqo
by ShastaB4C
Sun Mar 01, 2020 10:42 pm
Forum: Balancing Redox Reactions
Topic: When to add H+ or H20
Replies: 19
Views: 280

Re: When to add H+ or H20

Also, these videos really helped me out. He goes step by step teaching how to balance redox in non-neutral solutions.https://youtu.be/IZ1tKxsqV74
by ShastaB4C
Sun Mar 01, 2020 10:41 pm
Forum: Balancing Redox Reactions
Topic: When to add H+ or H20
Replies: 19
Views: 280

Re: When to add H+ or H20

Abigail_Hagen2G wrote:It really depends if the solution is acidic, basic, or neutral

How would you balance in a neutral solution? Like what steps would not use?
by ShastaB4C
Sun Mar 01, 2020 10:38 pm
Forum: Balancing Redox Reactions
Topic: 6K. 5D
Replies: 3
Views: 69

Re: 6K. 5D

Balance P4 → H2PO2- + PH3 in basic solution. I know that the half reactions are: 3 x (P4 + 8OH- → 4H2PO2- + 4e-) 12H2O + P4 + 12e- → 4PH3 + 12OH- and the answer is 3OH- + P4 → 3H2PO2- + PH3. But I don't know how the two half equations lead to that answer. Can somebody do it step by step, please? So...
by ShastaB4C
Sun Mar 01, 2020 10:34 pm
Forum: Balancing Redox Reactions
Topic: 6K.3d
Replies: 5
Views: 72

Re: 6K.3d

How are we to assume that it is both the reduced and oxidized form?
by ShastaB4C
Sun Mar 01, 2020 5:20 pm
Forum: Balancing Redox Reactions
Topic: 6K.3d
Replies: 5
Views: 72

6K.3d

Can someone explain where the reduction half reaction is for this prob?
by ShastaB4C
Sun Mar 01, 2020 4:47 pm
Forum: Balancing Redox Reactions
Topic: 6K.3 part a
Replies: 2
Views: 30

Re: 6K.3 part a

For my reduction half run, Where am I going wrong, because I got that the charges were already equal on both sides but then no electrons are released?
by ShastaB4C
Tue Feb 11, 2020 9:26 pm
Forum: Administrative Questions and Class Announcements
Topic: Pizza Rolls REVIEW Session DOWNLOAD HERE
Replies: 67
Views: 2825

Re: Pizza Rolls REVIEW Session DOWNLOAD HERE

Cooper Baddley 1F wrote:
ShastaB4C wrote:What did I do wrong? The answer is supposed to be 16 degrees Celsius

The ice goes through a phase change so you need to add that heat to the equation on the side of the ice.


Do I get that value from delta H fusion on the equation sheet?
by ShastaB4C
Tue Feb 11, 2020 10:40 am
Forum: Administrative Questions and Class Announcements
Topic: Pizza Rolls REVIEW Session DOWNLOAD HERE
Replies: 67
Views: 2825

Re: Pizza Rolls REVIEW Session DOWNLOAD HERE

What did I do wrong? The answer is supposed to be 16 degrees Celsius
by ShastaB4C
Mon Feb 10, 2020 4:52 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: HW 4F.17
Replies: 2
Views: 47

Re: HW 4F.17

I understand why we find the two delta S values using the heat capacities and find the sum. However, I don’t understand why we use the 3rd delta S value given at 100 degrees Celsius bc the answer key says we are heating the reaction to 100 degrees and then cooling to 85 degrees.
by ShastaB4C
Mon Feb 10, 2020 3:35 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: HW 4F.17
Replies: 2
Views: 47

HW 4F.17

Can someone explain a step by step why we solve this problem the way it says in the solution manual?
by ShastaB4C
Sat Feb 08, 2020 5:55 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 4D9
Replies: 2
Views: 48

Re: 4D9

The enthalpy of formation for diatomic molecules =0
by ShastaB4C
Sat Feb 08, 2020 5:53 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 4D23
Replies: 2
Views: 25

Re: 4D23

And then add the standard enthalpy of formation for NO. Just don’t forget to multiply that value by the coefficient of NO in the desired equation.
by ShastaB4C
Sat Feb 08, 2020 5:52 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 4D23
Replies: 2
Views: 25

Re: 4D23

It’s easier to keep the coefficients in whole numbers and multiply the first equation they have by 2
by ShastaB4C
Sat Feb 08, 2020 5:51 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 4D.1
Replies: 2
Views: 30

Re: 4D.1

you can use the enthalpy as a conversion factor. I hope this helps.
by ShastaB4C
Sat Feb 08, 2020 5:46 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: delta S for compression/expansion and isothermal
Replies: 1
Views: 35

Re: delta S for compression/expansion and isothermal

Yes, I think when the volume is changing, its usually doing so to keep the pressure constant
by ShastaB4C
Sat Feb 08, 2020 5:45 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: c naught and P naught
Replies: 2
Views: 63

Re: c naught and P naught

Make sure that it’s Po and not P^o bc the second one just means standard state of pressure so usually 1 bar or 1atm
by ShastaB4C
Sat Feb 08, 2020 5:44 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: c naught and P naught
Replies: 2
Views: 63

Re: c naught and P naught

Anything w/ naught should mean “initial”
by ShastaB4C
Sat Feb 08, 2020 5:42 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: units
Replies: 3
Views: 32

Re: units

But J and kJ are pretty loosely interchanged for all of the above units so just make sure you notice which one they are giving you or use the conversion factor 10^3J=1kJ.
by ShastaB4C
Sat Feb 08, 2020 5:37 pm
Forum: Calculating Work of Expansion
Topic: 4E.9
Replies: 1
Views: 23

4E.9

Can someone explain This problem and the reasoning behind it please?
by ShastaB4C
Wed Feb 05, 2020 6:52 pm
Forum: Calculating Work of Expansion
Topic: Constant?
Replies: 2
Views: 28

Re: Constant?

Oh I didn’t know it was that simple lol. Okay thank you!
by ShastaB4C
Wed Feb 05, 2020 6:45 pm
Forum: Calculating Work of Expansion
Topic: Constant?
Replies: 2
Views: 28

Constant?

What is this constant (101.325 J/ L x atm)?? And what is it used for?
by ShastaB4C
Mon Feb 03, 2020 1:34 pm
Forum: Calculating Work of Expansion
Topic: Reversible
Replies: 7
Views: 63

Re: Reversible

And what does effect does a common temperature have on the system doing work in a reversible process?
by ShastaB4C
Mon Feb 03, 2020 1:31 pm
Forum: Calculating Work of Expansion
Topic: Reversible
Replies: 7
Views: 63

Re: Reversible

Why is the external pressure changing (slowly but still) in a reversible process?
by ShastaB4C
Thu Jan 23, 2020 12:57 pm
Forum: Phase Changes & Related Calculations
Topic: Adding and subtracting properties
Replies: 6
Views: 54

Re: Adding and subtracting properties

Can someone give me an example of a property that is dependent on the path taken besides work?
by ShastaB4C
Thu Jan 23, 2020 12:53 pm
Forum: Phase Changes & Related Calculations
Topic: Calories vs calories
Replies: 5
Views: 31

Re: Calories vs calories

And which one has the conversion factor of 4 joules?
by ShastaB4C
Thu Jan 23, 2020 12:49 pm
Forum: Phase Changes & Related Calculations
Topic: Calories vs calories
Replies: 5
Views: 31

Re: Calories vs calories

Also which one is used on the nutrition facts on our food?
by ShastaB4C
Thu Jan 23, 2020 12:48 pm
Forum: Phase Changes & Related Calculations
Topic: Calories vs calories
Replies: 5
Views: 31

Calories vs calories

What is the difference between calories and Calories?
by ShastaB4C
Thu Jan 23, 2020 12:37 pm
Forum: Ideal Gases
Topic: solids and K
Replies: 8
Views: 77

Re: solids and K

Solids don’t have concentrations or partial pressures, so it can’t be calculated in K.
by ShastaB4C
Mon Jan 13, 2020 1:49 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kw for acidic/basic solutions
Replies: 3
Views: 30

Re: Kw for acidic/basic solutions

Is the Kw for water always 10^-14 at any temperature or does it vary?
by ShastaB4C
Mon Jan 13, 2020 1:48 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kw for acidic/basic solutions
Replies: 3
Views: 30

Kw for acidic/basic solutions

How does the temperature change of a neutralization reaction not have an effect on the K of the product solution? Or is it of the water?
by ShastaB4C
Sun Jan 12, 2020 10:16 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Concentration affecting equilibrium
Replies: 5
Views: 60

Re: Concentration affecting equilibrium

Can someone clarify how taking out some of the product can increase the amount of product made without considering temperature or additional input?
by ShastaB4C
Sun Jan 12, 2020 10:15 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Comparing K
Replies: 9
Views: 75

Re: Comparing K

Also, Is there a difference between saying the rxn “lies to the right” and “shifts to the right”?
by ShastaB4C
Sun Jan 12, 2020 10:14 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Comparing K
Replies: 9
Views: 75

Re: Comparing K

What if K=0? Does that have an effect?
by ShastaB4C
Sun Jan 12, 2020 10:06 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Calculating K
Replies: 9
Views: 68

Re: Calculating K

Would there be any solvent in which we would include it in K calculations?
by ShastaB4C
Sun Jan 12, 2020 10:04 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K
Replies: 10
Views: 74

Re: K

So would it be incorrect to put brackets around a partial pressure?
by ShastaB4C
Thu Dec 05, 2019 5:10 pm
Forum: Lewis Acids & Bases
Topic: 6A #15b
Replies: 3
Views: 40

Re: 6A #15b

Anne Tsai 1F wrote:Both oxygens and and the chlorine will be attached to sulfur. One of the oxygens will have a double bond, and the other one will have a formal charge of -1.


So the overall charge of the complex will be -1? The complex doesn’t end up being neutral?
by ShastaB4C
Thu Dec 05, 2019 5:08 pm
Forum: Amphoteric Compounds
Topic: 6A #11
Replies: 2
Views: 28

6A #11

When writing the 2 reaction equations for the amphoteric compound, HCO3-, is the equation where it acts as a base reacting with a hydronium ion or water?
by ShastaB4C
Thu Dec 05, 2019 4:45 pm
Forum: Amphoteric Compounds
Topic: amphiprotic and amphoteric
Replies: 9
Views: 132

Re: amphiprotic and amphoteric

Are there any other compounds that can be both amphiprotic and amphoteric besides water?
by ShastaB4C
Thu Dec 05, 2019 4:40 pm
Forum: Administrative Questions and Class Announcements
Topic: Final exam
Replies: 17
Views: 290

Re: Final exam

Test tip from one of the UAs: the number of minutes given for the exam=the number of points on the exam so pace yourself as best you can!!
by ShastaB4C
Thu Dec 05, 2019 4:38 pm
Forum: Lewis Acids & Bases
Topic: 6A #15b
Replies: 3
Views: 40

6A #15b

How do I draw Lewis structure of the product between Cl- and SO2?
by ShastaB4C
Sun Dec 01, 2019 2:05 pm
Forum: Bronsted Acids & Bases
Topic: What do we need to know?
Replies: 2
Views: 53

Re: What do we need to know?

I think the best advice is to study all examples given in lecture and review the ones from the HW. From the tests so far, it seems as long as you nail down the concept and practice it in diff scenarios such as the HW you should be okay
by ShastaB4C
Sun Dec 01, 2019 2:00 pm
Forum: Hybridization
Topic: Hybridized vs. Unhybridized Orbitals
Replies: 2
Views: 42

Re: Hybridized vs. Unhybridized Orbitals

Place one electron in each hybridized subshell first and and then one in your extra unhybridized subshell(s). You are trying to reduce electron repulsion so Hund’s rule still applies
by ShastaB4C
Sun Dec 01, 2019 1:56 pm
Forum: Hybridization
Topic: Hybrid Orbitals
Replies: 4
Views: 58

Re: Hybrid Orbitals

The electron repulsion that would be caused if u tried putting all the electrons in the hybridized shells would increase the energy of the atom and not work for explaining how the atom can form so many bonds. Or which bonds. By leaving out a p subshell, the atom has the opportunity for forming pi po...
by ShastaB4C
Sun Dec 01, 2019 1:49 pm
Forum: Hybridization
Topic: Hybrid Orbitals
Replies: 4
Views: 58

Re: Hybrid Orbitals

You would place the extra unpaired electron in the unhybridized orbitals in cases where each hybridized orbital subshell has one paired electron or just when it would make the atom of be more stable bc or lower energy.
by ShastaB4C
Sun Dec 01, 2019 1:46 pm
Forum: Hybridization
Topic: Hybrid Orbitals
Replies: 4
Views: 58

Re: Hybrid Orbitals

If it had 3 hybrid orbitals it is sp2. The unhybridized orbital is left over because only 2 of the p sub shells were hybridized but one wasn’t
by ShastaB4C
Sun Dec 01, 2019 1:43 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: pKa
Replies: 4
Views: 51

pKa

What does pKa stand for and its purpose?
by ShastaB4C
Sun Nov 24, 2019 6:58 pm
Forum: Biological Examples
Topic: TMs' biological functions
Replies: 3
Views: 46

Re: TMs' biological functions

What is the chemical formula for Chromium (III) picolinate? And will we need to know how to draw a Lewis structure of it?
by ShastaB4C
Sun Nov 24, 2019 6:55 pm
Forum: Biological Examples
Topic: Myoglobin
Replies: 3
Views: 44

Re: Myoglobin

Why does oxygen absorption and de-absorption in the heme complex depend on the local partial pressure of oxygen?
by ShastaB4C
Sun Nov 24, 2019 6:51 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Organometallic complex
Replies: 1
Views: 22

Organometallic complex

Does Carbon have to be present in an organometallic complex or just 1 or more Transition metals?
by ShastaB4C
Sun Nov 24, 2019 6:46 pm
Forum: Hybridization
Topic: Strength of sigma vs pi bonds
Replies: 6
Views: 53

Re: Strength of sigma vs pi bonds

So does that mean that molecules with pi bonds are more reactive?
by ShastaB4C
Sun Nov 24, 2019 6:44 pm
Forum: Hybridization
Topic: Clarification
Replies: 2
Views: 39

Re: Clarification

If the question asks for shape, would it be referring to molecular geometry or electron arrangement?
by ShastaB4C
Sun Nov 24, 2019 6:39 pm
Forum: Hybridization
Topic: Describing a molecule using hybridization
Replies: 4
Views: 38

Re: Describing a molecule using hybridization

What does steric mean?
by ShastaB4C
Sun Nov 24, 2019 6:06 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination compound vs covalent compound
Replies: 1
Views: 44

Coordination compound vs covalent compound

I get the purpose of a ligand is to attach to central atoms and forms a coordination compound but how is a coordination compound different from that of a regular covalently compound?
by ShastaB4C
Sun Nov 24, 2019 5:59 pm
Forum: Naming
Topic: Heme Complex
Replies: 3
Views: 38

Re: Heme Complex

Is the heme complex present in another other bio molecules that can show up on the final?
by ShastaB4C
Sun Nov 24, 2019 5:56 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Reactivity of pi bonds
Replies: 2
Views: 110

Reactivity of pi bonds

Can someone explain how a sigma bond is stronger than a pi bond if double bonds are stronger than single?
by ShastaB4C
Sun Nov 24, 2019 5:38 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Functional group
Replies: 2
Views: 45

Functional group

Are there any other functional groups we need to know besides amine or carboxyl groups that indicate possible acids or bases?
by ShastaB4C
Sun Nov 24, 2019 5:33 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8039
Views: 1409810

Re: Post All Chemistry Jokes Here

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by ShastaB4C
Sun Nov 24, 2019 5:33 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8039
Views: 1409810

Re: Post All Chemistry Jokes Here

Anna Wu 1H wrote:What is the chemical formula of coffee?






CoFe2




Isn’t this CoFeFe? LOL
by ShastaB4C
Sun Nov 24, 2019 5:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Final exam
Replies: 17
Views: 290

Re: Final exam

Does anyone know approximately how many questions the final exam will be?
by ShastaB4C
Sun Nov 24, 2019 5:24 pm
Forum: Administrative Questions and Class Announcements
Topic: Lecture
Replies: 3
Views: 43

Re: Lecture

Or will will week 10 be more focused on review?
by ShastaB4C
Sun Nov 24, 2019 5:23 pm
Forum: Administrative Questions and Class Announcements
Topic: Lecture
Replies: 3
Views: 43

Lecture

Will we be covering new topics in lecture all the way up to the Friday lecture before the final?
by ShastaB4C
Sun Nov 24, 2019 5:20 pm
Forum: Biological Examples
Topic: Drawing biological examples
Replies: 1
Views: 42

Drawing biological examples

Will we be expected to know how to draw the Lewis structures of the biological examples we have covered in class? (Also meaning memorizing the chemical formula)
by ShastaB4C
Sun Nov 24, 2019 5:15 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Intensive properties
Replies: 1
Views: 55

Intensive properties

Which compound properties that we have covered have are affected by intramolecular forces rather than intermolecular forces?
by ShastaB4C
Sun Nov 24, 2019 5:13 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Extensive properties
Replies: 1
Views: 34

Extensive properties

Which properties have we covered are extensive? Having to do with intermolecular forces?
by ShastaB4C
Sun Nov 24, 2019 5:07 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8039
Views: 1409810

Re: Post All Chemistry Jokes Here

61B3C5C9-D069-406A-8122-A4DDC0272280.jpeg


Week 9 has me like...
by ShastaB4C
Sun Nov 24, 2019 4:59 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8039
Views: 1409810

Re: Post All Chemistry Jokes Here

807DBD0D-020E-48E5-8905-8697E5E109E3.jpeg
by ShastaB4C
Sun Nov 24, 2019 4:57 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordinate covalent bonds
Replies: 5
Views: 69

Coordinate covalent bonds

Can someone explain how coordinate covalent bonds work?
by ShastaB4C
Sun Oct 27, 2019 9:01 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8039
Views: 1409810

Re: Post All Chemistry Jokes Here

D06B2E74-CF3D-4868-B5C2-A13CF4B6B1BA.png
by ShastaB4C
Sun Oct 20, 2019 9:40 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron configurations of ions
Replies: 4
Views: 40

Re: Electron configurations of ions

If the ion has a positive charge, electrons have been taken away. If it has a negative charge, electrons have been added
by ShastaB4C
Sun Oct 20, 2019 9:39 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty value in equation
Replies: 9
Views: 110

Re: Uncertainty value in equation

I would say just +/- 3 so 3 as an absolute value
by ShastaB4C
Sun Oct 20, 2019 9:36 pm
Forum: General Science Questions
Topic: Equation Help
Replies: 2
Views: 44

Re: Equation Help

We didn’t need to know this equation for the purpose of this class right?
by ShastaB4C
Sun Oct 20, 2019 9:30 pm
Forum: General Science Questions
Topic: Test #1
Replies: 6
Views: 102

Re: Test #1

Did u mean Percent yield?
by ShastaB4C
Sun Oct 20, 2019 9:25 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: understanding orbitals
Replies: 3
Views: 34

Re: understanding orbitals

I would say that each energy level, n, has different subshells/states (s,p,d,f). These subshells have a specific numbers of orbitals
S(1), p(3), d(5), f(7) and each orbital can hold two electrons given that the two electrons have opposite spin
by ShastaB4C
Sat Oct 12, 2019 6:03 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg Equation
Replies: 2
Views: 42

Re: Rydberg Equation

I’m not sure how much it is confusing rather than we just don’t need to know it for 14A :/
by ShastaB4C
Sat Oct 12, 2019 5:56 pm
Forum: Properties of Light
Topic: ∝ notation
Replies: 2
Views: 55

Re: ∝ notation

Yes you’ve got it! Frequency and wavelength have an inverse relationship since their product equals a constant. So when one increases, the other decreases.
by ShastaB4C
Sat Oct 12, 2019 5:50 pm
Forum: DeBroglie Equation
Topic: De Broglie's Equation
Replies: 13
Views: 155

De Broglie's Equation

Does “v” represent velocity or frequency? We used to use it for frequency for E=hv but for de Broglie’s it’s velocity?
by ShastaB4C
Sat Oct 12, 2019 5:43 pm
Forum: Properties of Electrons
Topic: Lyman and Balmer Series
Replies: 4
Views: 92

Re: Lyman and Balmer Series

Will we have to know the names of the series to answer certain problems?
by ShastaB4C
Sat Oct 12, 2019 5:38 pm
Forum: Properties of Electrons
Topic: Diffraction
Replies: 4
Views: 66

Re: Diffraction

Also can someone please clarify what the lecture meant by waves being “in phase” (constructive) or “out of phase” (destructive)?
by ShastaB4C
Sat Oct 12, 2019 5:36 pm
Forum: Properties of Electrons
Topic: Diffraction
Replies: 4
Views: 66

Diffraction

Can someone explain what diffraction has to do with electrons having wave-like properties?
by ShastaB4C
Sat Oct 05, 2019 12:58 pm
Forum: SI Units, Unit Conversions
Topic: Polyatomic ions
Replies: 3
Views: 56

Re: Polyatomic ions

C60B8820-C050-4ABF-A99E-BCC9D19BA90D.jpeg


This chart may help simplify it a bit.
by ShastaB4C
Sat Oct 05, 2019 12:46 pm
Forum: SI Units, Unit Conversions
Topic: Charges
Replies: 2
Views: 36

Re: Charges

https://youtu.be/nijb6UMvZuE

This video is a good little review for it. I hope this helps!
by ShastaB4C
Sat Oct 05, 2019 12:17 pm
Forum: Properties of Light
Topic: Amplitude? [ENDORSED]
Replies: 8
Views: 190

Re: Amplitude? [ENDORSED]

So is it correct to conclude that the equation c = wavelength x frequency is just relating to their inverse relationship and the light’s identity (e.g. red visible light, UV light, etc) while the amplitude just means that light’s intensity; therefore amplitude isn’t involved in the equation?
by ShastaB4C
Sat Oct 05, 2019 12:10 pm
Forum: Properties of Light
Topic: Spectroscopy
Replies: 3
Views: 58

Re: Spectroscopy

https://youtu.be/jjy-eqWM38g

I hope this video helps clarify how light interacts with electrons!
by ShastaB4C
Sat Oct 05, 2019 11:56 am
Forum: Properties of Light
Topic: Quantum Mechanics
Replies: 9
Views: 149

Re: Quanta and Photons

Is there a difference between quanta and photons?
by ShastaB4C
Sat Oct 05, 2019 11:53 am
Forum: Properties of Light
Topic: Quantum Mechanics
Replies: 9
Views: 149

Quanta and Photons

Can someone please clarify what are quanta?

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