Search found 114 matches
- Sun Mar 14, 2021 7:45 pm
- Forum: Student Social/Study Group
- Topic: Final Results
- Replies: 8
- Views: 502
Re: Final Results
I had the same question, thank you!
- Mon Mar 08, 2021 5:24 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: reaction rates
- Replies: 3
- Views: 192
Re: reaction rates
thank you for your help!
- Mon Mar 08, 2021 3:15 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: reaction rates
- Replies: 3
- Views: 192
reaction rates
how do we answer part (a)?
- Mon Mar 08, 2021 1:50 pm
- Forum: Student Social/Study Group
- Topic: Chem Lectures
- Replies: 2
- Views: 181
Re: Chem Lectures
yayy, thank you!
- Mon Mar 08, 2021 1:00 pm
- Forum: Student Social/Study Group
- Topic: Chem Lectures
- Replies: 2
- Views: 181
Chem Lectures
When is the last chem lecture?
- Wed Mar 03, 2021 10:33 pm
- Forum: Student Social/Study Group
- Topic: Fave food
- Replies: 266
- Views: 25277
Re: Fave food
A new favorite is Costco's triple chocolate brownie! a must for intense chocolate lovers :P
- Wed Mar 03, 2021 1:18 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 9
- Views: 480
Re: Final
thank you!
- Wed Mar 03, 2021 11:08 am
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 9
- Views: 480
Final
The final is always cumulative right? Or is it like the midterms where we only focus on like new material
- Wed Mar 03, 2021 11:07 am
- Forum: Student Social/Study Group
- Topic: Spring Break
- Replies: 53
- Views: 2975
Re: Spring Break
when's spring break?
- Mon Mar 01, 2021 1:28 pm
- Forum: Student Social/Study Group
- Topic: Sampling Hw Wk 9
- Replies: 1
- Views: 225
Sampling Hw Wk 9
is there any homework this week? I don't see anything on Sapling.
- Fri Feb 26, 2021 3:51 am
- Forum: Balancing Redox Reactions
- Topic: Sapling #5 Wk 7/8 phases on Balanced Equations
- Replies: 2
- Views: 179
Re: Sapling #5 Wk 7/8 phases on Balanced Equations
never mind, I got it lol. I had put H2O as aqueous instead of liquid.
- Fri Feb 26, 2021 3:47 am
- Forum: Balancing Redox Reactions
- Topic: Sapling #5 Wk 7/8 phases on Balanced Equations
- Replies: 2
- Views: 179
Re: Phases on Balanced Equations
So, I added the phases given and I'm getting the wrong answer on sapling, did anyone else have this problem?
- Fri Feb 26, 2021 3:34 am
- Forum: Balancing Redox Reactions
- Topic: Sapling #5 Wk 7/8 phases on Balanced Equations
- Replies: 2
- Views: 179
Sapling #5 Wk 7/8 phases on Balanced Equations
How do we assign phases onto balanced equations? For example, this is the equation given
N2H4(g)+ClO−3(aq)⟶NO(g)+Cl−(aq)
and i know this is it balanced
3N2H4 + 4ClO3- → 6NO + 4Cl- + 6H2O
N2H4(g)+ClO−3(aq)⟶NO(g)+Cl−(aq)
and i know this is it balanced
3N2H4 + 4ClO3- → 6NO + 4Cl- + 6H2O
- Thu Feb 25, 2021 1:18 pm
- Forum: Balancing Redox Reactions
- Topic: Sapling #3 Week 7&8
- Replies: 2
- Views: 183
Sapling #3 Week 7&8
I am confused on how to balance the equation, can someone help please. The question is:
For a particular redox reaction, NO−2 is oxidized to NO−3 and Cu2+ is reduced to Cu+ . Complete and balance the equation for this reaction in basic solution.
For a particular redox reaction, NO−2 is oxidized to NO−3 and Cu2+ is reduced to Cu+ . Complete and balance the equation for this reaction in basic solution.
- Thu Feb 25, 2021 1:15 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Thursday Drop in
- Replies: 1
- Views: 121
Thursday Drop in
Is the drop in from 1-3 on thursdays canceled today?
- Mon Feb 22, 2021 9:37 pm
- Forum: Student Social/Study Group
- Topic: Chem 14C Discussion switch
- Replies: 1
- Views: 133
Chem 14C Discussion switch
Hello, if anyone is in Dis 1E Wednesday from 2-2:50pm and wouldn't mind switching to Dis 1B from 2-2:50pm please let me know (: I really need a switch.
- Mon Feb 22, 2021 6:32 pm
- Forum: Student Social/Study Group
- Topic: Fave food
- Replies: 266
- Views: 25277
Re: Fave food
I love pazookies, brownies, and anything delicious and sweet honestly. omg im hungry now
- Mon Feb 22, 2021 6:31 pm
- Forum: Student Social/Study Group
- Topic: Students Who Have a Job
- Replies: 103
- Views: 8683
Re: Students Who Have a Job
It's kind of comforting to know I'm not the only one. I recently had to take up 2 jobs and balancing school and work has not been easy. I feel so burned out and exhausted all the time. I just hope all this work and effort is worth it in the end.
- Wed Feb 17, 2021 11:08 am
- Forum: Student Social/Study Group
- Topic: Sapling on midterm 2
- Replies: 6
- Views: 302
Sapling on midterm 2
Did Lavelle mention what questions from sapling relate to the midterm coming up? I know for the last midterm he did.
- Tue Feb 16, 2021 9:43 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: G° vs G
- Replies: 30
- Views: 2361
Re: G° vs G
In addition to this, a UA said you would use the G° equation when the reaction you're working with is at equilibrium and the equation for G when it is not since G is the difference between gibbs free energy of products and reactants at any point.
- Tue Feb 16, 2021 9:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Extra homework problems on Midterm 2
- Replies: 14
- Views: 693
Re: Extra homework problems on Midterm 2
The textbook problems related to midterm 2 material is under outline 3 and outline 4 of the syllabus posted on his website. Remember to exclude the questions that were covered on midterm 1 in the third outline. Hi, I noticed you said exclude the questions covered on midterm one. does this mean that...
- Mon Feb 15, 2021 10:59 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 4.17
- Replies: 2
- Views: 122
Re: 4.17
Thank you, I just noticed that
- Mon Feb 15, 2021 10:49 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 4.17
- Replies: 2
- Views: 122
4.17
Why is R= 0.0820578 and not 8.206 like it is on the constants sheet we have?
- Mon Feb 15, 2021 10:47 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 4.7
- Replies: 2
- Views: 152
Re: 4.7
thank you!
- Mon Feb 15, 2021 10:33 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 4.7
- Replies: 2
- Views: 152
4.7
I don't understand where the 6 - 7.5 came from. Can someone explain please
- Mon Feb 15, 2021 1:59 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: 4A.7
- Replies: 3
- Views: 149
Re: 4A.7
The book answer says this but I'm plugging it into the calculator and I'm not getting the same answer
- Mon Feb 15, 2021 1:57 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: 4A.7
- Replies: 3
- Views: 149
4A.7
How do we find What percentage of the heat is used to raise the temperature of the water?
I know q(water)= 1*10^5 and q(copper)= 1.2*10^4
I know q(water)= 1*10^5 and q(copper)= 1.2*10^4
- Fri Feb 12, 2021 3:30 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Using 5/2 and 3/2
- Replies: 6
- Views: 290
Re: Using 5/2 and 3/2
what is the difference between monatomic and diatomic? Hi! Monoatomic means that the molecules in an element are made up of one atom, which diatomic means that the molecules in an element have two atoms bonded together. Noble gases are some examples of monatomic elements, while H2, N2, and F2 are s...
- Fri Feb 12, 2021 3:30 pm
- Forum: Student Social/Study Group
- Topic: Spring 2021
- Replies: 106
- Views: 11383
Re: Spring 2021
Is anyone taking Chem 14BL, B and physics? I wanted to know if its too much to take at the same time.
- Fri Feb 12, 2021 2:08 pm
- Forum: Student Social/Study Group
- Topic: Thoughts on Upcoming Midterm 2
- Replies: 41
- Views: 1534
Re: Thoughts on Upcoming Midterm 2
I'm really nervous as well but I'm trying to do my best and stay positive.
- Fri Feb 12, 2021 1:53 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Using 5/2 and 3/2
- Replies: 6
- Views: 290
Re: Using 5/2 and 3/2
what is the difference between monatomic and diatomic?
- Fri Feb 12, 2021 1:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Lecture #16 Error
- Replies: 6
- Views: 298
Re: Lecture #16 Error
Sometimes this happens to me as well. I usually close the tab and open up ccle all together and it works.
- Fri Feb 12, 2021 1:46 pm
- Forum: Administrative Questions and Class Announcements
- Topic: UA Sessions: Midterm 2 Review
- Replies: 13
- Views: 667
Re: UA Sessions: Midterm 2 Review
They usually do reviews for the midterm coming up.
- Fri Feb 05, 2021 11:43 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem Community Grades
- Replies: 4
- Views: 261
Chem Community Grades
Does anyone know who counts our posts? because I think I'm missing points and wanted to see who I should go to
- Fri Feb 05, 2021 11:34 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Sapling Week 5 and 6 #7
- Replies: 3
- Views: 164
Re: Sapling Week 5 and 6 #7
Hello, I'm little confused on what exactly this problem is asking us to do and what it wants us to do with the table? Would it be possible for anyone to explain to me how were supposed to use it? Thank you! Hey! so for this problem you use q=m*deltaH to find delta H. From the table you find the dif...
- Fri Feb 05, 2021 10:26 pm
- Forum: Student Social/Study Group
- Topic: Sapling HW and exams
- Replies: 19
- Views: 709
Re: Sapling HW and exams
they are but i think the practice problems he assigns from the book are more helpful. He sometimes puts those same problems in the test.
- Fri Feb 05, 2021 10:22 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Sapling Week 3 and 4 #8
- Replies: 4
- Views: 178
Re: Sapling Week 3 and 4 #8
I was just going to ask about this problem! thank you
- Fri Feb 05, 2021 10:17 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Sapling 14
- Replies: 2
- Views: 247
Re: Sapling 14
I think it is because in path A the ideal gas goes through a reversible expansion so you use w=-nRTln(v2/v1) whereas in path B the gas undergoes an irreversible expansion so you'd use w=-P delta V. Hope this helps (:
- Fri Feb 05, 2021 10:12 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: sapling #10
- Replies: 2
- Views: 139
Re: sapling #10
I believe for q(water) you would use (T final- 45 degrees C) and for q(ice) you would use (T final- 0 degrees C)
- Fri Feb 05, 2021 9:59 pm
- Forum: Administrative Questions and Class Announcements
- Topic: tips if you're struggling!
- Replies: 77
- Views: 4266
Re: tips if you're struggling!
thank you so much for these tips!
- Wed Feb 03, 2021 8:17 pm
- Forum: Bronsted Acids & Bases
- Topic: Salts as acids and bases
- Replies: 2
- Views: 262
Re: Salts as acids and bases
thank you!
- Wed Feb 03, 2021 8:16 pm
- Forum: General Science Questions
- Topic: Chem Jokes
- Replies: 28
- Views: 1380
Re: Chem Jokes
Don't trust atoms, they make up everything...
- Sat Jan 30, 2021 9:00 am
- Forum: Student Social/Study Group
- Topic: Midterm 1
- Replies: 10
- Views: 301
Re: Midterm 1
Thank you! I needed to hear this (:
- Thu Jan 28, 2021 4:14 pm
- Forum: Administrative Questions and Class Announcements
- Topic: HW Due Date
- Replies: 15
- Views: 582
Re: HW Due Date
Yea I was just going to ask the same thing because I feel like we haven't had enough time to really learn this week's topic since we're having the midterm.
- Tue Jan 26, 2021 10:03 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: textbook. practice problem 5I.3
- Replies: 1
- Views: 33
textbook. practice problem 5I.3
The question says to use the equilibrium constant found in the table below for H2 + I2 = 2HI. Does anyone know why the K=160 and not 794?
- Mon Jan 25, 2021 10:53 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Sapling #8
- Replies: 7
- Views: 447
Re: Sapling #8
So for part c (or the last question), you will want to use the equation you listed (but use CS2 instead of S8): ΔH=nCS2×ΔH∘ Since 399 kJ of heat is absorbed, this will be the value for ΔH. Then use the value of ΔH∘ given in the problem, which is +358.8, and divide this by 4 because there are 4 mole...
- Mon Jan 25, 2021 10:13 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Sapling #8
- Replies: 7
- Views: 447
Sapling #8
If this is given Carbon disulfide can be prepared from coke (an impure form of carbon) and elemental sulfur. 4C(s)+S8(s)⟶4CS2(l) ΔH∘=+358.8 kJ how would we answer these questions? 1)Calculate the amount of heat absorbed in the reaction of 173 g of carbon with excess sulfur. 2)Calculate the amount of...
- Sun Jan 24, 2021 11:54 am
- Forum: Student Social/Study Group
- Topic: Comfort Movies
- Replies: 168
- Views: 21733
Re: Comfort Movies
I love going on Disney plus and watching Soul or Mulan to calm my nerves
- Sun Jan 24, 2021 11:51 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: percent ionization
- Replies: 6
- Views: 211
Re: percent ionization
thank you!
- Tue Jan 19, 2021 9:06 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: percent ionization
- Replies: 6
- Views: 211
Re: percent ionization
how do we find the percent ionization?
- Tue Jan 19, 2021 8:57 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: percent ionization
- Replies: 6
- Views: 211
percent ionization
Is percent ionization but the Ka as a percentage?
- Tue Jan 19, 2021 8:54 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Textbook Answer Key
- Replies: 5
- Views: 124
Re: Textbook Answer Key
I thought they were missing too but you have to make sure you're looking at 5G.1,3... these start on the pdf page 243. Hope this helps!
- Wed Jan 13, 2021 12:56 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Sapling HW Q6
- Replies: 3
- Views: 74
Re: Sapling HW Q6
Are you plugging in the correct value? Your question says NH3's concentration is 3.88 mol * L-1, but you are plugging in 3.33 instead into your equation. If you do (3.88)^2/[(0.569)(2.76)^3], you should get 1.2584, and that rounds to 1.3? Because 1.3 (Q) is larger than 0.061 (K), the reaction is mo...
- Wed Jan 13, 2021 12:06 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Sapling HW Q6
- Replies: 3
- Views: 74
Sapling HW Q6
Hey, haas anyone solved q6? its asking for Q and I know its the same as solving for K but the answer I'm getting isn't correct. I'm not sure what I'm doing wrong. The question is: Consider the reaction at 500°C . N2(g)+3H2(g)↽−−⇀2NH3(g)Kc=0.061 If analysis shows that the composition of the reaction ...
- Wed Jan 13, 2021 11:58 am
- Forum: Ideal Gases
- Topic: Sampling hw #4
- Replies: 16
- Views: 1698
Re: Sampling hw #4
Is this why on the sapling feedback the ice box shows reactants asa +x? I have been trying to solve it for the longest and still don't understand. I keep getting imaginary numbers as my x.
- Wed Jan 13, 2021 11:54 am
- Forum: Student Social/Study Group
- Topic: Comfort Movies
- Replies: 168
- Views: 21733
Re: Comfort Movies
The Harry Potter series, specifically the first two and the og Disney Mulan are my comfort movies. Something about them just make me feel safe lol
- Wed Jan 13, 2021 11:52 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kw= 1.0 x 10^-14
- Replies: 11
- Views: 1399
Re: Kw= 1.0 x 10^-14
thank you all!
- Mon Jan 11, 2021 7:13 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Kw= 1.0 x 10^-14
- Replies: 11
- Views: 1399
Kw= 1.0 x 10^-14
In 1/11 lecture, Lavelle says Kw= 1.0 x 10^-14 therefore H30 and OH must be 1.0 x. 10^-7. How did he come up with 1.0 x 10^-14?
- Sun Jan 10, 2021 8:45 pm
- Forum: Student Social/Study Group
- Topic: Chemistry Community
- Replies: 29
- Views: 1076
Re: Chemistry Community
Nicole Critzer 2L wrote:In order to get points for each post does it matter how long or short it is? Or is a question or like two sentences sufficient?
I don't think it matters as long as you're participating, but writing really thorough posts will help you make up missed posts.
- Mon Jan 04, 2021 8:33 pm
- Forum: Administrative Questions and Class Announcements
- Topic: UA Sessions
- Replies: 3
- Views: 78
Re: UA Sessions
Was the one from 8-10pm cancelled? I've been waiting for the zoom call to start for 30 minutes.
- Mon Jan 04, 2021 8:10 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Sapling HW
- Replies: 3
- Views: 121
Re: Sapling HW
thank you!
- Mon Jan 04, 2021 8:09 pm
- Forum: Administrative Questions and Class Announcements
- Topic: UA Sessions
- Replies: 3
- Views: 78
UA Sessions
When do UA sessions officially start?
- Mon Jan 04, 2021 1:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Sapling HW
- Replies: 3
- Views: 121
Sapling HW
Is there any Sapling modules due Week 1?
- Tue Dec 15, 2020 2:09 am
- Forum: Student Social/Study Group
- Topic: Final Exam
- Replies: 49
- Views: 2371
Re: Final Exam
The test was way harder than I expected, but I hope we all did well (:
- Thu Dec 10, 2020 12:15 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Calculating H+
- Replies: 17
- Views: 789
Re: Calculating H+
thank you!
- Thu Dec 10, 2020 12:11 am
- Forum: Bronsted Acids & Bases
- Topic: Salts as acids and bases
- Replies: 2
- Views: 262
Salts as acids and bases
How do we determine if a salt is acidic, basic, or neutral?
- Wed Dec 09, 2020 11:57 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Calculating H+
- Replies: 17
- Views: 789
Re: Calculating H+
America Alvarado wrote:How do we calculate the [H+] and [OH-] if we are only given the pH. For example, pH of 8.85 at 25 °C.
I think I figured it out, would we do 10^(-8.85) to find [H+]?
- Wed Dec 09, 2020 11:48 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Calculating H+
- Replies: 17
- Views: 789
Calculating H+
How do we calculate the [H+] and [OH-] if we are only given the pH. For example, pH of 8.85 at 25 °C.
- Mon Dec 07, 2020 10:45 am
- Forum: Student Social/Study Group
- Topic: Recorded Lectures
- Replies: 9
- Views: 541
Recorded Lectures
Is anyone else having trouble playing today's lecture? (12/7) I keep trying but its just a black screen that says "this video file cannot be played"
- Mon Dec 07, 2020 10:44 am
- Forum: Student Social/Study Group
- Topic: Chem Website
- Replies: 1
- Views: 109
Re: Chem Website
Thank you!
- Mon Dec 07, 2020 10:36 am
- Forum: Student Social/Study Group
- Topic: Chem Website
- Replies: 1
- Views: 109
Chem Website
Does anyone know or know where I can find the password for the chemistry website?
- Thu Dec 03, 2020 8:32 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Finding Coordination Number
- Replies: 14
- Views: 543
Re: Finding Coordination Number
Thank you soo much for all your help! I finally understand!
- Wed Dec 02, 2020 11:07 pm
- Forum: Lewis Acids & Bases
- Topic: Acids and Bases
- Replies: 5
- Views: 258
Acids and Bases
Do acids and bases have anything to do with the electronegativity of an atom?
- Wed Dec 02, 2020 10:57 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Finding Coordination Number
- Replies: 14
- Views: 543
Finding Coordination Number
How do you calculate the coordination number? I'm really lost.
- Sat Nov 28, 2020 8:14 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 15
- Views: 499
Re: Final
Where are the dates for the test?
- Sat Nov 28, 2020 8:10 pm
- Forum: Sigma & Pi Bonds
- Topic: sapling #15
- Replies: 24
- Views: 1007
Re: sapling #15
single bonds are sigma and every double bond contains one sigma and one pi bond
- Fri Nov 27, 2020 10:06 pm
- Forum: Student Social/Study Group
- Topic: Sampling Give Up Option
- Replies: 12
- Views: 503
Sampling Give Up Option
What happens if we give up on a question? Do we lose the points for that question?
- Wed Nov 25, 2020 9:18 am
- Forum: Hybridization
- Topic: Hybridization Clarification
- Replies: 9
- Views: 498
Re: Hybridization Clarification
In lecture, Dr. Lavells referred to many "unhybridized orbitals". How exactly can you identify these? Well hybridized orbitals are a combination of atomic orbitals, so unhybridized orbitals would be the left over orbitals that are not combined, or the ground state of the atom. Hope this h...
- Wed Nov 25, 2020 9:10 am
- Forum: Lewis Structures
- Topic: Octet Rule
- Replies: 17
- Views: 962
Re: Octet Rule
I had a follow-up question to this discussion thread, is there a maximum number of electrons an expanded octect can accommodate? I had read somewhere that it depends on how many orbitals the valence shell of an atom has. If it has more orbitals free then it will be able to accommodate more electron...
- Thu Nov 19, 2020 12:54 am
- Forum: Formal Charge and Oxidation Numbers
- Topic: Oxidation Number
- Replies: 11
- Views: 532
Re: Oxidation Number
So are the oxidation numbers usually given? or are we suppose to know that Oxygen has an oxidation number of -2?
- Thu Nov 19, 2020 12:50 am
- Forum: Quantum Numbers and The H-Atom
- Topic: London Dispersion Forces
- Replies: 12
- Views: 822
Re: London Dispersion Forces
thank you! I understand now
- Thu Nov 19, 2020 12:48 am
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Hydrogen Bond
- Replies: 6
- Views: 385
Re: Hydrogen Bond
Correct, like Lucy said, since there is no bond between hydrogen and carbon there are hydrogen bonds
- Thu Nov 19, 2020 12:47 am
- Forum: Administrative Questions and Class Announcements
- Topic: Discussion participation
- Replies: 2
- Views: 98
Re: Discussion participation
Is there a way to make up posts points missed?
- Mon Nov 16, 2020 10:54 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: London Dispersion Forces
- Replies: 12
- Views: 822
London Dispersion Forces
What are London dispersion forces ?
- Thu Nov 12, 2020 3:50 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Oxidation Number
- Replies: 11
- Views: 532
Oxidation Number
How do you determine the oxidation number of a molecule? For example the oxidation number of ClO4-? Thank you
- Sun Nov 08, 2020 11:13 pm
- Forum: Student Social/Study Group
- Topic: Veterans Day
- Replies: 16
- Views: 594
Re: Veterans Day
Thank you everyone!
- Sun Nov 08, 2020 11:11 pm
- Forum: Ionic & Covalent Bonds
- Topic: Electronegativity
- Replies: 16
- Views: 905
Re: Electronegativity
So the more valence electrons an atom has, the higher its electronegativity?
- Sun Nov 08, 2020 11:09 pm
- Forum: Lewis Structures
- Topic: Resonance Structures
- Replies: 3
- Views: 148
Resonance Structures
How do you draw resonance lewis structures? Like how do you know where to put double or single bonds or how to you rearrange a structure so it's still similar? I'm having a hard time answering the hw question asking for two resonance structures of a carbamate ion.
- Sun Nov 08, 2020 11:04 pm
- Forum: Student Social/Study Group
- Topic: midterm
- Replies: 6
- Views: 204
Re: midterm
I was wondering the same thing. I'm going to ask the TA during discussion.
- Sun Nov 08, 2020 11:02 pm
- Forum: Student Social/Study Group
- Topic: Mid-quarter Check in
- Replies: 67
- Views: 3061
Re: Mid-quarter Check in
This quarter feel so long. I feel exhausted and I'm having a harder time understanding the material after Midterm 1. I don't know if anyone else feels the same.
- Fri Nov 06, 2020 12:52 am
- Forum: Student Social/Study Group
- Topic: Veterans Day
- Replies: 16
- Views: 594
Veterans Day
Does anyone know if there is discussion section on Wednesday since it's Veterans Day?
- Sun Nov 01, 2020 1:14 pm
- Forum: Student Social/Study Group
- Topic: Tips for Staying Focused
- Replies: 64
- Views: 3488
Re: Tips for Staying Focused
This may sound weird, but it really helps me. To stay focused I talk to myself about whatever I'm studying. If I write something down I also say it out loud like if I were explaining it to someone.
- Sun Nov 01, 2020 1:08 pm
- Forum: Ionic & Covalent Bonds
- Topic: Homework due date
- Replies: 49
- Views: 1898
Re: Homework due date
Sampling homework is always due Sunday night at 11:59pm
- Sun Nov 01, 2020 1:07 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2759083
Re: Post All Chemistry Jokes Here
Omg these are actually funny
- Sun Nov 01, 2020 12:38 pm
- Forum: Photoelectric Effect
- Topic: Sampling Hw #19
- Replies: 2
- Views: 165
Sampling Hw #19
What would the speed of each particle be if it had the same wavelength as a photon of orange light (lambda=625.0 nm)? Did anyone else have trouble finding electron and alpha particle speed using the de Broglie's equation? I converted nm to m and used v= h/m*lambda but I keep getting the incorrect an...
- Tue Oct 27, 2020 8:40 pm
- Forum: Einstein Equation
- Topic: Textbook Problem 1B.9
- Replies: 5
- Views: 421
Re: Textbook Problem 1B.9
Yea, you're right. You use E=hc/lambda. Then you multiply 32W times 2 because it's asking in 2 seconds. Then you divide 64W by what you got from E=hc/lambda and that is how many photons are generated. For the second part, you use Avogadro's constant to find the moles. Hope this helped!
- Sat Oct 24, 2020 4:52 pm
- Forum: Student Social/Study Group
- Topic: Text Book Solutions
- Replies: 2
- Views: 135
Re: Text Book Solutions
Francesca_Borchardt_2L wrote:Hello,
They are located towards the end of the textbook. The odd exercises answers are there. Page C12 is where the answers are.
Hope this helps!
Thank you!
- Sat Oct 24, 2020 4:46 pm
- Forum: Student Social/Study Group
- Topic: Text Book Solutions
- Replies: 2
- Views: 135
Text Book Solutions
Does anyone know where to find the textbook solutions to the practice problems?
- Sat Oct 24, 2020 12:21 pm
- Forum: Trends in The Periodic Table
- Topic: Sampling Hw #16
- Replies: 3
- Views: 173
Re: Sampling Hw #16
Ground state electron configuration is when the electron is at its lowest energy available. For instance the ground state configuration for oxygen would be 1s2 2s2 2p4. But let's say you excite it, then the electron will move up a quantum level to another orbital. So the excited state configuration...
- Fri Oct 23, 2020 4:35 pm
- Forum: Trends in The Periodic Table
- Topic: Sampling Hw #16
- Replies: 3
- Views: 173
Sampling Hw #16
Hi, can someone explain the ground state electron configuration? I don't know the difference in written configuration between excited and ground state.