Search found 100 matches
- Wed Mar 11, 2020 12:14 am
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Tangent
- Replies: 3
- Views: 305
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.
- Wed Mar 11, 2020 12:09 am
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: k' vs kr
- Replies: 13
- Views: 767
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
- Wed Mar 11, 2020 12:08 am
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Memorization?
- Replies: 4
- Views: 324
Re: Memorization?
So derivations may come in handy based on the information given?
- Wed Mar 11, 2020 12:05 am
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 513411
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.
- Tue Mar 10, 2020 8:49 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Memorization?
- Replies: 4
- Views: 324
Memorization?
Do we have to memorize the integrated rate law formulas for each order or how to derive them?
- Tue Mar 10, 2020 8:48 pm
- Forum: Administrative Questions and Class Announcements
- Topic: ENDGAME Review Session
- Replies: 71
- Views: 5464
Re: ENDGAME Review Session
You are literally the only reason I made it through 14A/B lol. Thank you soooo much
- Mon Mar 02, 2020 10:25 pm
- Forum: Balancing Redox Reactions
- Topic: reversing the anode or cathode reaction [ENDORSED]
- Replies: 5
- Views: 445
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...
- Mon Mar 02, 2020 10:20 pm
- Forum: Balancing Redox Reactions
- Topic: 6L.3e
- Replies: 1
- Views: 182
6L.3e
Can someone explain each species on the cathode side of the reaction and why it’s written in this notation?
- Mon Mar 02, 2020 9:29 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 6L.3d
- Replies: 4
- Views: 361
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...
- Mon Mar 02, 2020 9:06 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 6L
- Replies: 2
- Views: 192
Re: 6L
Maybe the solution manual just put it to explain it??
- Mon Mar 02, 2020 8:26 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 6L
- Replies: 2
- Views: 192
6L
Where in the question specifies needing to find the E cell for the reaction?
- Sun Mar 01, 2020 10:52 pm
- Forum: Balancing Redox Reactions
- Topic: 6K.5 part b
- Replies: 4
- Views: 688
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!!
I hope this helps!!
- Sun Mar 01, 2020 10:51 pm
- Forum: Balancing Redox Reactions
- Topic: 6K.5 part b
- Replies: 4
- Views: 688
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-
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-
- Sun Mar 01, 2020 10:46 pm
- Forum: Balancing Redox Reactions
- Topic: Acidic vs. Basic Solutions
- Replies: 8
- Views: 627
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
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
- Sun Mar 01, 2020 10:43 pm
- Forum: Balancing Redox Reactions
- Topic: When to add H+ or H20
- Replies: 19
- Views: 2370
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
- Sun Mar 01, 2020 10:42 pm
- Forum: Balancing Redox Reactions
- Topic: When to add H+ or H20
- Replies: 19
- Views: 2370
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
- Sun Mar 01, 2020 10:41 pm
- Forum: Balancing Redox Reactions
- Topic: When to add H+ or H20
- Replies: 19
- Views: 2370
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?
- Sun Mar 01, 2020 10:38 pm
- Forum: Balancing Redox Reactions
- Topic: 6K. 5D
- Replies: 3
- Views: 239
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...
- Sun Mar 01, 2020 10:34 pm
- Forum: Balancing Redox Reactions
- Topic: 6K.3d
- Replies: 5
- Views: 365
Re: 6K.3d
How are we to assume that it is both the reduced and oxidized form?
- Sun Mar 01, 2020 5:20 pm
- Forum: Balancing Redox Reactions
- Topic: 6K.3d
- Replies: 5
- Views: 365
6K.3d
Can someone explain where the reduction half reaction is for this prob?
- Sun Mar 01, 2020 4:47 pm
- Forum: Balancing Redox Reactions
- Topic: 6K.3 part a
- Replies: 2
- Views: 153
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?
- Tue Feb 11, 2020 9:26 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Pizza Rolls REVIEW Session DOWNLOAD HERE
- Replies: 67
- Views: 5498
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?
- Tue Feb 11, 2020 10:40 am
- Forum: Administrative Questions and Class Announcements
- Topic: Pizza Rolls REVIEW Session DOWNLOAD HERE
- Replies: 67
- Views: 5498
Re: Pizza Rolls REVIEW Session DOWNLOAD HERE
What did I do wrong? The answer is supposed to be 16 degrees Celsius
- 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: 204
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.
- 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: 204
HW 4F.17
Can someone explain a step by step why we solve this problem the way it says in the solution manual?
- 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: 183
Re: 4D9
The enthalpy of formation for diatomic molecules =0
- 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: 168
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.
- 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: 168
Re: 4D23
It’s easier to keep the coefficients in whole numbers and multiply the first equation they have by 2
- 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: 138
Re: 4D.1
you can use the enthalpy as a conversion factor. I hope this helps.
- 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: 88
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
- Sat Feb 08, 2020 5:45 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: c naught and P naught
- Replies: 2
- Views: 1219
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
- Sat Feb 08, 2020 5:44 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: c naught and P naught
- Replies: 2
- Views: 1219
Re: c naught and P naught
Anything w/ naught should mean “initial”
- Sat Feb 08, 2020 5:42 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: units
- Replies: 3
- Views: 132
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.
- Sat Feb 08, 2020 5:37 pm
- Forum: Calculating Work of Expansion
- Topic: 4E.9
- Replies: 1
- Views: 59
4E.9
Can someone explain This problem and the reasoning behind it please?
- Wed Feb 05, 2020 6:52 pm
- Forum: Calculating Work of Expansion
- Topic: Constant?
- Replies: 2
- Views: 63
Re: Constant?
Oh I didn’t know it was that simple lol. Okay thank you!
- Wed Feb 05, 2020 6:45 pm
- Forum: Calculating Work of Expansion
- Topic: Constant?
- Replies: 2
- Views: 63
Constant?
What is this constant (101.325 J/ L x atm)?? And what is it used for?
- Mon Feb 03, 2020 1:34 pm
- Forum: Calculating Work of Expansion
- Topic: Reversible
- Replies: 7
- Views: 238
Re: Reversible
And what does effect does a common temperature have on the system doing work in a reversible process?
- Mon Feb 03, 2020 1:31 pm
- Forum: Calculating Work of Expansion
- Topic: Reversible
- Replies: 7
- Views: 238
Re: Reversible
Why is the external pressure changing (slowly but still) in a reversible process?
- Thu Jan 23, 2020 12:57 pm
- Forum: Phase Changes & Related Calculations
- Topic: Adding and subtracting properties
- Replies: 6
- Views: 355
Re: Adding and subtracting properties
Can someone give me an example of a property that is dependent on the path taken besides work?
- Thu Jan 23, 2020 12:53 pm
- Forum: Phase Changes & Related Calculations
- Topic: Calories vs calories
- Replies: 5
- Views: 100
Re: Calories vs calories
And which one has the conversion factor of 4 joules?
- Thu Jan 23, 2020 12:49 pm
- Forum: Phase Changes & Related Calculations
- Topic: Calories vs calories
- Replies: 5
- Views: 100
Re: Calories vs calories
Also which one is used on the nutrition facts on our food?
- Thu Jan 23, 2020 12:48 pm
- Forum: Phase Changes & Related Calculations
- Topic: Calories vs calories
- Replies: 5
- Views: 100
Calories vs calories
What is the difference between calories and Calories?
- Thu Jan 23, 2020 12:37 pm
- Forum: Ideal Gases
- Topic: solids and K
- Replies: 8
- Views: 308
Re: solids and K
Solids don’t have concentrations or partial pressures, so it can’t be calculated in K.
- Mon Jan 13, 2020 1:49 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kw for acidic/basic solutions
- Replies: 3
- Views: 107
Re: Kw for acidic/basic solutions
Is the Kw for water always 10^-14 at any temperature or does it vary?
- Mon Jan 13, 2020 1:48 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kw for acidic/basic solutions
- Replies: 3
- Views: 107
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?
- Sun Jan 12, 2020 10:16 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Concentration affecting equilibrium
- Replies: 5
- Views: 186
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?
- Sun Jan 12, 2020 10:15 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Comparing K
- Replies: 9
- Views: 215
Re: Comparing K
Also, Is there a difference between saying the rxn “lies to the right” and “shifts to the right”?
- Sun Jan 12, 2020 10:14 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Comparing K
- Replies: 9
- Views: 215
Re: Comparing K
What if K=0? Does that have an effect?
- Sun Jan 12, 2020 10:06 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Calculating K
- Replies: 9
- Views: 201
Re: Calculating K
Would there be any solvent in which we would include it in K calculations?
- Sun Jan 12, 2020 10:04 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: K
- Replies: 10
- Views: 355
Re: K
So would it be incorrect to put brackets around a partial pressure?
- Thu Dec 05, 2019 5:10 pm
- Forum: Lewis Acids & Bases
- Topic: 6A #15b
- Replies: 3
- Views: 187
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?
- Thu Dec 05, 2019 5:08 pm
- Forum: Amphoteric Compounds
- Topic: 6A #11
- Replies: 2
- Views: 83
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?
- Thu Dec 05, 2019 4:45 pm
- Forum: Amphoteric Compounds
- Topic: amphiprotic and amphoteric
- Replies: 9
- Views: 687
Re: amphiprotic and amphoteric
Are there any other compounds that can be both amphiprotic and amphoteric besides water?
- Thu Dec 05, 2019 4:40 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final exam
- Replies: 17
- Views: 871
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!!
- Thu Dec 05, 2019 4:38 pm
- Forum: Lewis Acids & Bases
- Topic: 6A #15b
- Replies: 3
- Views: 187
6A #15b
How do I draw Lewis structure of the product between Cl- and SO2?
- Sun Dec 01, 2019 2:05 pm
- Forum: Bronsted Acids & Bases
- Topic: What do we need to know?
- Replies: 2
- Views: 130
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
- Sun Dec 01, 2019 2:00 pm
- Forum: Hybridization
- Topic: Hybridized vs. Unhybridized Orbitals
- Replies: 2
- Views: 193
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
- Sun Dec 01, 2019 1:56 pm
- Forum: Hybridization
- Topic: Hybrid Orbitals
- Replies: 4
- Views: 218
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...
- Sun Dec 01, 2019 1:49 pm
- Forum: Hybridization
- Topic: Hybrid Orbitals
- Replies: 4
- Views: 218
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.
- Sun Dec 01, 2019 1:46 pm
- Forum: Hybridization
- Topic: Hybrid Orbitals
- Replies: 4
- Views: 218
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
- Sun Dec 01, 2019 1:43 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: pKa
- Replies: 4
- Views: 216
pKa
What does pKa stand for and its purpose?
- Sun Nov 24, 2019 6:58 pm
- Forum: Biological Examples
- Topic: TMs' biological functions
- Replies: 3
- Views: 231
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?
- Sun Nov 24, 2019 6:55 pm
- Forum: Biological Examples
- Topic: Myoglobin
- Replies: 3
- Views: 197
Re: Myoglobin
Why does oxygen absorption and de-absorption in the heme complex depend on the local partial pressure of oxygen?
- Sun Nov 24, 2019 6:51 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Organometallic complex
- Replies: 1
- Views: 84
Organometallic complex
Does Carbon have to be present in an organometallic complex or just 1 or more Transition metals?
- Sun Nov 24, 2019 6:46 pm
- Forum: Hybridization
- Topic: Strength of sigma vs pi bonds
- Replies: 6
- Views: 152
Re: Strength of sigma vs pi bonds
So does that mean that molecules with pi bonds are more reactive?
- Sun Nov 24, 2019 6:44 pm
- Forum: Hybridization
- Topic: Clarification
- Replies: 2
- Views: 212
Re: Clarification
If the question asks for shape, would it be referring to molecular geometry or electron arrangement?
- Sun Nov 24, 2019 6:39 pm
- Forum: Hybridization
- Topic: Describing a molecule using hybridization
- Replies: 4
- Views: 239
Re: Describing a molecule using hybridization
What does steric mean?
- Sun Nov 24, 2019 6:06 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination compound vs covalent compound
- Replies: 1
- Views: 182
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?
- Sun Nov 24, 2019 5:59 pm
- Forum: Naming
- Topic: Heme Complex
- Replies: 3
- Views: 228
Re: Heme Complex
Is the heme complex present in another other bio molecules that can show up on the final?
- Sun Nov 24, 2019 5:56 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Reactivity of pi bonds
- Replies: 2
- Views: 275
Reactivity of pi bonds
Can someone explain how a sigma bond is stronger than a pi bond if double bonds are stronger than single?
- Sun Nov 24, 2019 5:38 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Functional group
- Replies: 2
- Views: 243
Functional group
Are there any other functional groups we need to know besides amine or carboxyl groups that indicate possible acids or bases?
- Sun Nov 24, 2019 5:33 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2994960
- Sun Nov 24, 2019 5:33 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2994960
Re: Post All Chemistry Jokes Here
Anna Wu 1H wrote:What is the chemical formula of coffee?
CoFe2
Isn’t this CoFeFe? LOL
- Sun Nov 24, 2019 5:25 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final exam
- Replies: 17
- Views: 871
Re: Final exam
Does anyone know approximately how many questions the final exam will be?
- Sun Nov 24, 2019 5:24 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Lecture
- Replies: 3
- Views: 110
Re: Lecture
Or will will week 10 be more focused on review?
- Sun Nov 24, 2019 5:23 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Lecture
- Replies: 3
- Views: 110
Lecture
Will we be covering new topics in lecture all the way up to the Friday lecture before the final?
- Sun Nov 24, 2019 5:20 pm
- Forum: Biological Examples
- Topic: Drawing biological examples
- Replies: 1
- Views: 151
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)
- 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: 124
Intensive properties
Which compound properties that we have covered have are affected by intramolecular forces rather than intermolecular forces?
- 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: 168
Extensive properties
Which properties have we covered are extensive? Having to do with intermolecular forces?
- Sun Nov 24, 2019 5:07 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2994960
Re: Post All Chemistry Jokes Here
Week 9 has me like...
- Sun Nov 24, 2019 4:59 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2994960
- Sun Nov 24, 2019 4:57 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordinate covalent bonds
- Replies: 5
- Views: 310
Coordinate covalent bonds
Can someone explain how coordinate covalent bonds work?
- Sun Oct 27, 2019 9:01 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2994960
- Sun Oct 20, 2019 9:40 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron configurations of ions
- Replies: 4
- Views: 152
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
- Sun Oct 20, 2019 9:39 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Uncertainty value in equation
- Replies: 9
- Views: 340
Re: Uncertainty value in equation
I would say just +/- 3 so 3 as an absolute value
- Sun Oct 20, 2019 9:36 pm
- Forum: General Science Questions
- Topic: Equation Help
- Replies: 2
- Views: 92
Re: Equation Help
We didn’t need to know this equation for the purpose of this class right?
- Sun Oct 20, 2019 9:30 pm
- Forum: General Science Questions
- Topic: Test #1
- Replies: 6
- Views: 291
Re: Test #1
Did u mean Percent yield?
- Sun Oct 20, 2019 9:25 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: understanding orbitals
- Replies: 3
- Views: 119
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
S(1), p(3), d(5), f(7) and each orbital can hold two electrons given that the two electrons have opposite spin
- Sat Oct 12, 2019 6:03 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Rydberg Equation
- Replies: 2
- Views: 56
Re: Rydberg Equation
I’m not sure how much it is confusing rather than we just don’t need to know it for 14A :/
- Sat Oct 12, 2019 5:56 pm
- Forum: Properties of Light
- Topic: ∝ notation
- Replies: 2
- Views: 89
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.
- Sat Oct 12, 2019 5:50 pm
- Forum: DeBroglie Equation
- Topic: De Broglie's Equation
- Replies: 13
- Views: 476
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?
- Sat Oct 12, 2019 5:43 pm
- Forum: Properties of Electrons
- Topic: Lyman and Balmer Series
- Replies: 4
- Views: 361
Re: Lyman and Balmer Series
Will we have to know the names of the series to answer certain problems?
- Sat Oct 12, 2019 5:38 pm
- Forum: Properties of Electrons
- Topic: Diffraction
- Replies: 4
- Views: 131
Re: Diffraction
Also can someone please clarify what the lecture meant by waves being “in phase” (constructive) or “out of phase” (destructive)?
- Sat Oct 12, 2019 5:36 pm
- Forum: Properties of Electrons
- Topic: Diffraction
- Replies: 4
- Views: 131
Diffraction
Can someone explain what diffraction has to do with electrons having wave-like properties?
- Sat Oct 05, 2019 12:58 pm
- Forum: SI Units, Unit Conversions
- Topic: Polyatomic ions
- Replies: 3
- Views: 162
Re: Polyatomic ions
This chart may help simplify it a bit.
- Sat Oct 05, 2019 12:46 pm
- Forum: SI Units, Unit Conversions
- Topic: Charges
- Replies: 2
- Views: 88
- Sat Oct 05, 2019 12:17 pm
- Forum: Properties of Light
- Topic: Amplitude? [ENDORSED]
- Replies: 8
- Views: 531
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?
- Sat Oct 05, 2019 12:10 pm
- Forum: Properties of Light
- Topic: Spectroscopy
- Replies: 3
- Views: 92
- Sat Oct 05, 2019 11:56 am
- Forum: Properties of Light
- Topic: Quantum Mechanics
- Replies: 9
- Views: 334
Re: Quanta and Photons
Is there a difference between quanta and photons?
- Sat Oct 05, 2019 11:53 am
- Forum: Properties of Light
- Topic: Quantum Mechanics
- Replies: 9
- Views: 334
Quanta and Photons
Can someone please clarify what are quanta?