Search found 138 matches
- Fri Mar 12, 2021 8:59 pm
- Forum: Student Social/Study Group
- Topic: Doubts about Pre-Med or Pre-Professional School
- Replies: 17
- Views: 968
Re: Doubts about Pre-Med or Pre-Professional School
I totally feel you right now, and it's so relieving to know that I'm not the only one feeling doubts right now. I can't tell you how many times in the past week I've started panicking over med school/pre-med stuff (when I should have been focused on chem lol) Online school is tough, and everyone I k...
- Fri Mar 12, 2021 10:36 am
- Forum: General Science Questions
- Topic: Grade Cutoffs?
- Replies: 15
- Views: 1511
Re: Grade Cutoffs?
Do you guys know if Lavelle rounds grades?
- Tue Mar 09, 2021 10:03 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Sapling #13 Weeks 9/10
- Replies: 7
- Views: 425
Re: Sapling #13 Weeks 9/10
are there any problems similar to this in the textbook?
- Tue Mar 09, 2021 10:01 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Outline Practice 7D.1
- Replies: 5
- Views: 278
Re: Outline Practice 7D.1
thank you!
- Tue Mar 09, 2021 10:55 am
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Outline Practice 7D.1
- Replies: 5
- Views: 278
Re: Outline Practice 7D.1
Arya Adibi 1K wrote:There is a ln(A) constant in that equation, maybe it will shift your answer
what do you mean by that?
- Mon Mar 08, 2021 9:30 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Outline Practice 7D.1
- Replies: 5
- Views: 278
Outline Practice 7D.1
Hello. Can someone explain how to solve this problem from the chem textbook? I used the formula for an Arrhenius equation that looks like this: ln(kr2 / kr1) = Ea/R (1/T1 - 1/T2) However, I got an answer that is WAYYY off from the textbook solutions. Can someone please explain? Thanks: The rate cons...
- Sat Mar 06, 2021 2:14 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: cell diagrams - pro tips?
- Replies: 4
- Views: 343
Re: cell diagrams - pro tips?
Here are some things I keep in mind when writing cell diagrams: - Always make sure you put the oxidation half-reaction on the left, reduction half-reaction on the right (to remember this, you can think about how "reduction" and "right" both start with the letter r, so the r's go...
- Sat Mar 06, 2021 2:12 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: cell diagrams - pro tips?
- Replies: 4
- Views: 343
Re: cell diagrams - pro tips?
I am still a little confused on where to put Pt when there's no conducting metal. I think I've seen it on the right and left. I had asked a similar question too. I think it depends on if each of the half reactions requires a solid to serve as an electrode. If one of the half reactions doesn't have ...
- Mon Mar 01, 2021 9:37 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Reducing/Oxidizing Agents and the Periodic Table
- Replies: 3
- Views: 185
Reducing/Oxidizing Agents and the Periodic Table
Hello! I'm a little stuck on how to see what elements are reducing agents for species in aqueous solutions, like in question 6M.7 from the textbook. How can you figure this out?
- Mon Mar 01, 2021 9:35 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: cell diagrams - pro tips?
- Replies: 4
- Views: 343
cell diagrams - pro tips?
Does anyone have any tips or help on how to make cell diagrams? I sometimes mess up on the orders of my items :(
Thanks!
Thanks!
- Mon Mar 01, 2021 9:34 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: To Pt(s) or not to Pt(s)? - cell diagrams
- Replies: 6
- Views: 392
To Pt(s) or not to Pt(s)? - cell diagrams
Hello all! I have a quick question in regards to cell diagrams. When do you put a Pt(s) in your diagram and when do you not? Also, I've seen some solutions in Atkins_7e_SSM that have Pt(s) on only one side of the diagram.
I would gladly appreciate any help! thanks
I would gladly appreciate any help! thanks
- Sat Feb 27, 2021 10:59 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Sapling #17
- Replies: 8
- Views: 608
Re: Sapling #17
Hi! So since the reaction isn't in standard conditions, where [H+]=1 M and PH3=1 atm, we have to use the Nerst equation for nonstandard conditions: E=E˚-(0.0592V)/n logQ. Using the equation 2H+ + 2e- --> H2, we can find the E˚ from the table, and we can determine Q from Q=P/R (make sure to square t...
- Fri Feb 26, 2021 8:57 pm
- Forum: Student Social/Study Group
- Topic: Switching Chem 14C Discussion Section?
- Replies: 7
- Views: 546
Re: Switching Chem 14C Discussion Section?
Hi! If your current person to switch with falls through, the r/ucla reddit and the discussion section of the class ccle page (not sure when that opens though) are also good places to try. thanks for letting me know! I did actually get switched already so I got lucky, but I will keep that in mind fo...
- Fri Feb 26, 2021 8:55 pm
- Forum: Student Social/Study Group
- Topic: Post Midterm 2 De-stressing
- Replies: 92
- Views: 6135
Re: Post Midterm 2 De-stressing
I also have a LS7B midterm tomorrow :(( I haven't started WandaVision but I might. Is it really good though? I've heard some gooood things about it. OMG is Wandavision AMAZING! I love all the marvel movies and am a huge fanatic, but even my mom who hasn't seen any superhero movies ever is enjoying ...
- Fri Feb 26, 2021 8:54 pm
- Forum: Student Social/Study Group
- Topic: Chem 14B Final
- Replies: 86
- Views: 5089
Re: Chem 14B Final
Lavelle has a whole week of review sessions leading up to the final which I highly recommend visiting. Also, one important thing would be relating past topics we learned to something we learned at the tail end of the quarter.
- Fri Feb 26, 2021 8:52 pm
- Forum: Student Social/Study Group
- Topic: Fave food
- Replies: 266
- Views: 28835
Re: Fave food
ok don't come at me for this but heirloom tomatoes and some burrata. Honestly any cheese+tomato combo slaps. I also highly recommend the feta-pasta thing all over tik tok, SO GOOD I've been wanting to try this omg. Some people make it look really good and some just doesn't look good at all so I'm t...
- Sun Feb 21, 2021 11:45 pm
- Forum: Student Social/Study Group
- Topic: Fave food
- Replies: 266
- Views: 28835
Re: Fave food
ok don't come at me for this but heirloom tomatoes and some burrata. Honestly any cheese+tomato combo slaps. I also highly recommend the feta-pasta thing all over tik tok, SO GOOD
- Sun Feb 21, 2021 11:43 pm
- Forum: Student Social/Study Group
- Topic: Switching Chem 14C Discussion Section?
- Replies: 7
- Views: 546
Re: Switching Chem 14C Discussion Section?
Maryeli Garay 2H wrote:Hi! I'm not in this class or discussion, but I would suggest asking in the class groupme! There are a lot of people in it and I'm sure someone there will be able to switch :)
yep already did that! and found someone thank goodness. chem community was the last resort 0.0
- Sun Feb 21, 2021 11:42 pm
- Forum: Student Social/Study Group
- Topic: Switching Chem 14C Discussion Section?
- Replies: 7
- Views: 546
Re: Switching Chem 14C Discussion Section?
John Antowan 1K wrote:Hi! I don't have that class but I know someone who might be willing to switch. Let me know if you still need the spot!
Heyo thanks for replying! I think I might have found someone willing to switch already, but thank you!!
- Sun Feb 21, 2021 11:41 pm
- Forum: Student Social/Study Group
- Topic: We made it through Midterm 2!
- Replies: 71
- Views: 3519
Re: We made it through Midterm 2!
yay congrats everyone! we're so close to being done :)
- Thu Feb 18, 2021 9:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Office Hours 2/19
- Replies: 5
- Views: 295
Re: Office Hours 2/19
I would say go with the information in Lavelle's emails! The TA's mentioned are hosting office hours at the times mentioned in the email! Just hope you're not Lecture 1 because the test is at 11am so it would be hard to go to some TA hours.... (or not worth it since you'll be done by 12) Good luck a...
- Wed Feb 17, 2021 10:54 am
- Forum: Student Social/Study Group
- Topic: Switching Chem 14C Discussion Section?
- Replies: 7
- Views: 546
Switching Chem 14C Discussion Section?
Hi everyone! I'm looking to switch with someone to a different discussion section for Chem 14 C.
I am in lecture 1 Discussion Section 1B which is on Tuesdays from 2-2:50 pm.
I will gladly appreciate it :')
I am in lecture 1 Discussion Section 1B which is on Tuesdays from 2-2:50 pm.
I will gladly appreciate it :')
- Sun Feb 14, 2021 3:45 pm
- Forum: General Science Questions
- Topic: Sapling HW Week 5&6 Question #7
- Replies: 5
- Views: 2153
Re: Sapling HW Week 5&6 Question #7
thank you!!
- Sun Feb 14, 2021 2:54 pm
- Forum: General Science Questions
- Topic: Sapling HW Week 5&6 Question #7
- Replies: 5
- Views: 2153
Sapling HW Week 5&6 Question #7
Hello all. I'm having a bit of difficulty in trying to solve question #7 from the sapling homework. I would really appreciate a step-by-step approach since I think that all the tiny things we have to do are tripping me up. Three liquid samples of known masses are heated to their boiling points with ...
- Sat Feb 13, 2021 3:28 pm
- Forum: Calculating Work of Expansion
- Topic: How much work water do when it freezes?
- Replies: 8
- Views: 5524
Re: How much work water do when it freezes?
Me and my friend were studying for our quiz and spent quite a while working on this question. In the end, we also got the same answer that Kitu Konya got and used the same method. I think the answer in the book is wrong. hello from 2021; yes, I do get a similar answer to Kitu and various others. th...
- Fri Feb 12, 2021 10:15 pm
- Forum: General Science Questions
- Topic: Careless Mistakes
- Replies: 54
- Views: 3336
Re: Careless Mistakes
I totally feel you on making careless mistakes. after reviewing my midterm with my TA i saw places where I had just slipped and made a simple mistake. Considering the time crunch we're given, I still highly suggest taking your time and double, even triple-checking questions when there is time. Writi...
- Fri Feb 12, 2021 10:13 pm
- Forum: General Science Questions
- Topic: Study Tips for midterm
- Replies: 24
- Views: 1313
Re: Study Tips for midterm
I'm watching videos on youtube to try and help nail the concept this time around since thermo seems to be a handful... plus I've always used outline book problems to study with too :)
- Mon Feb 08, 2021 11:57 am
- Forum: Student Social/Study Group
- Topic: Post Midterm 1...
- Replies: 39
- Views: 1590
Re: Post Midterm 1...
I am exatcly in the same boat as you. It is a bit discouraging after working so hard, but I am trying a complete 180 in the way's I study. I highly recommend going to UA sessions (Kate's Workshops on Thursday nights are AWESOME) and just trying to nail down the concept. For me that was my issue (not...
- Mon Feb 08, 2021 11:55 am
- Forum: Student Social/Study Group
- Topic: Culinary Chemistry
- Replies: 239
- Views: 31887
Re: Culinary Chemistry
As someone who loves to bake and cook, it's super interesting to see the relations it has to chemistry and how chem has been able to explain a lot of stuff. One thing that I always remember now is the question/topic/idea we covered (don't remember exactly at this point) about why steam is so much ho...
- Mon Feb 08, 2021 11:49 am
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Sapling Week 3&4 #19
- Replies: 3
- Views: 147
Re: Sapling Week 3&4 #19
Thank you! I figured it out eventually :)
- Wed Feb 03, 2021 9:49 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Sapling Week 3&4 #19
- Replies: 3
- Views: 147
Sapling Week 3&4 #19
Hey I'm a bit stuck with this problem on the sapling hw: A constant‑volume calorimeter was calibrated by carrying out a reaction known to release 1.73 kJ of heat in 0.300 L of solution in the calorimeter (q=−1.73 kJ) , resulting in a temperature rise of 3.39 ∘C . In a subsequent experiment, 150.0 mL...
- Wed Feb 03, 2021 9:30 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Sapling Week 3&4 HW #19
- Replies: 5
- Views: 249
Re: Sapling Week 3&4 HW #19
Juliet Cushing_2H wrote:I think what is wrong with your first step is that you are dividing by the final temperature (2.89+273) when the equation only calls for delta T (2.89º). Try using just this value on the denominator to find Ccal!
what would you do for the second calculation? like for qcal?
- Wed Feb 03, 2021 8:59 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Sapling Week 3 and 4 Question 14
- Replies: 7
- Views: 267
Re: Sapling Week 3 and 4 Question 14
Can someone explain why you use 0.0826 when finding n(moles) and 8.314 in the full on question for work? I'm confused why
- Wed Feb 03, 2021 8:20 pm
- Forum: General Science Questions
- Topic: midterm 1
- Replies: 11
- Views: 999
midterm 1
After looking at my score for midterm 1, I'm feeling a little bit upset... I've done a lot to prepare (the outlines, attending UA sessions, doing sapling problems, even signing up for tutoring) and felt really confident in myself. However, after getting my results back, I do feel discouraged after n...
- Wed Feb 03, 2021 4:07 pm
- Forum: Phase Changes & Related Calculations
- Topic: Sapling #4 Question 10 - Temperature
- Replies: 19
- Views: 12496
Re: Sapling #4 Question 10 - Temperature
Just figured this out! my mistake was not adding the energy to melt ice :')
I got my answer to be around 31.7 degrees celsius. Hopefully my tears don't show up on this picture:
I got my answer to be around 31.7 degrees celsius. Hopefully my tears don't show up on this picture:
- Wed Feb 03, 2021 4:00 pm
- Forum: Phase Changes & Related Calculations
- Topic: Sapling #4 Question 10 - Temperature
- Replies: 19
- Views: 12496
Re: Sapling #4 Question 10 - Temperature
Hello! I think your setup would look a little something like this. Using the q = mCsdeltaT equation you can input the information that you know from both the ice cube and the water and set them equal to each other. (53.0g)(4.184 J/g*C)(Tf - 0C) = - (444g)(4.184 J/g*C)(Tf - 45C) You then multiple th...
- Wed Feb 03, 2021 3:59 pm
- Forum: Phase Changes & Related Calculations
- Topic: Sapling #4 Question 10 - Temperature
- Replies: 19
- Views: 12496
Re: Sapling #4 Question 10 - Temperature
Hi! This is kind of really messy, but I’ve attached a link to a picture of my work for that question. Since you say you’ve already read through the other posts regarding this Sapling question, I hope you’ll get what exactly it is I did, but if you don’t, lemme know and I’ll explain! https://imgur.c...
- Wed Feb 03, 2021 3:58 pm
- Forum: Phase Changes & Related Calculations
- Topic: Sapling #4 Question 10 - Temperature
- Replies: 19
- Views: 12496
Re: Sapling #4 Question 10 - Temperature
This is what i did but I'm still not getting the right answer....
- Wed Feb 03, 2021 3:52 pm
- Forum: Phase Changes & Related Calculations
- Topic: Sapling #4 Question 10 - Temperature
- Replies: 19
- Views: 12496
Re: Sapling #4 Question 10 - Temperature
I'm having a bit of struggle solving question #10 on sapling Week 4 hw. I've been looking all over chem community, but honestly I would appreciate a more visual explanation of what to do. Thank you so much to anyone who helps: An ice cube with a mass of 53.0 g at 0.0 ∘C is added to a glass containi...
- Wed Feb 03, 2021 3:14 pm
- Forum: Phase Changes & Related Calculations
- Topic: Sapling #4 Question 10 - Temperature
- Replies: 19
- Views: 12496
Sapling #4 Question 10 - Temperature
I'm having a bit of struggle solving question #10 on sapling Week 4 hw. I've been looking all over chem community, but honestly I would appreciate a more visual explanation of what to do. Thank you so much to anyone who helps: An ice cube with a mass of 53.0 g at 0.0 ∘C is added to a glass containin...
- Wed Feb 03, 2021 2:51 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008783
Re: Post All Chemistry Jokes Here
What does the enthalpy pirate steal?
Joules
Joules
- Wed Feb 03, 2021 2:48 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008783
Re: Post All Chemistry Jokes Here
Let's take all of these bad chemistry jokes and BARIUM
- Wed Feb 03, 2021 2:45 pm
- Forum: Student Social/Study Group
- Topic: Best kdrama?
- Replies: 30
- Views: 1795
Re: Best kdrama?
I personally am not a fan of kdramas (idk I'm not much of a romance tv trope lover) BUT my roommates are currently watching Start Up on Netflix! I watched an episode or two and it is a sweet show :)
- Wed Feb 03, 2021 2:43 pm
- Forum: Ideal Gases
- Topic: Chem BL
- Replies: 107
- Views: 7145
Re: Chem BL
After talking with my departmental advisor (which i HIGHLY recommend you to do if you don't already talk to them) they recommended not to do Chem 14C and 14BL at the same time. I decided on taking Chem 14C during the spring quarter and am planning on taking 14BL this summer. I will be working during...
- Wed Feb 03, 2021 2:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem 14BL Summer?
- Replies: 4
- Views: 156
Re: Chem 14BL Summer?
Also, side note I've seen for session A there is a teacher, while for session C it's taught by "The Staff"
Does anyone know what that means?
Does anyone know what that means?
- Wed Feb 03, 2021 2:39 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem 14BL Summer?
- Replies: 4
- Views: 156
Chem 14BL Summer?
Hey hey everyone! I just wanted to see if there is anybody else taking Chem 14BL (the lab) this summer? I'm planning on taking Chem 14C in the spring and have signed up for summer session C for the lab.
Love to meet other crazy people planning on spending summer doing classes hehe (:
Love to meet other crazy people planning on spending summer doing classes hehe (:
- Wed Feb 03, 2021 2:37 pm
- Forum: Administrative Questions and Class Announcements
- Topic: HW Due Date
- Replies: 15
- Views: 624
Re: HW Due Date
Yes Week 3/4 homework is due THIS SUNDAY (2/7) before midnight. Week 5/6 homework is due NEXT SUNDAY (2/14)
- Tue Jan 26, 2021 6:16 pm
- Forum: Student Social/Study Group
- Topic: Where to access past midterms?
- Replies: 4
- Views: 288
Re: Where to access past midterms?
Yea we've kinda also don't have much accurate (in a sense) past midterm stuff since all of this is now online (obviously). I've really just been relying on the book and sapling because the past tests that upperclassmen have shown me are slightly different.
- Tue Jan 26, 2021 6:12 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 5I.29 7th Edition
- Replies: 3
- Views: 95
Re: 5I.29 7th Edition
idella 1D wrote:Yea im a bit confused as well because even when I assume that it is very small (and that 0.22-2x is still 0.22) i still get the 8.39*10^-34 barr? Is there something I am doing wrong 0.0
jeez i just realized this post is 2 years old omg- whoops
- Tue Jan 26, 2021 6:12 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 5I.29 7th Edition
- Replies: 3
- Views: 95
Re: 5I.29 7th Edition
Yea im a bit confused as well because even when I assume that it is very small (and that 0.22-2x is still 0.22) i still get the 8.39*10^-34 barr? Is there something I am doing wrong 0.0
- Tue Jan 26, 2021 6:08 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Outline 2 Practice 6.19
- Replies: 3
- Views: 106
Re: Outline 2 Practice 6.19
Yea I ended up figuring it out. So like I had noticed, I do have to use Le Chatlier's in this. So for a) I said that an increase in lactic acid will lead to an Increase in the concentration of HbO2-. this means it will shift right to the products side and therefore HbO2- will decrease for b) when mo...
- Mon Jan 25, 2021 11:48 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Outline 2 Practice 6.19
- Replies: 3
- Views: 106
Outline 2 Practice 6.19
hey all! I just have a quick question on how to approach this problem found in the textbook. I would gladly like some help :') Hemoglobin (Hb) molecules in the blood carry O2 molecules from the lungs, where the concentration of oxygen is high, to the tissues where it is low (see the Interlude follow...
- Sat Jan 23, 2021 2:01 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: outline practice 5I.25
- Replies: 1
- Views: 108
Re: outline practice 5I.25
Oops! Figured it out haha
For anyone who was stuck, you have to find Q using the concentrations given to us (don't forget to divide the mols by 5.00 liters) and get the value for Q. using that, you can determine which direction it will go by comparing Q to Kc and then use an ice chart
For anyone who was stuck, you have to find Q using the concentrations given to us (don't forget to divide the mols by 5.00 liters) and get the value for Q. using that, you can determine which direction it will go by comparing Q to Kc and then use an ice chart
- Sat Jan 23, 2021 1:56 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: outline practice 5I.25
- Replies: 1
- Views: 108
outline practice 5I.25
I'm having some difficulty solving this problem from the book practice. I would appreciate some help A reaction mixture is prepared by mixing 0.100 mol SO2, 0.200 mol NO2, 0.100 mol NO, and 0.150 mol SO3 in a reaction vessel of volume 5.00 L. The reaction SO2(g)+NO2(g)⇌NO(g)+SO3(g) is allowed to rea...
- Sat Jan 23, 2021 1:04 pm
- Forum: Student Social/Study Group
- Topic: New Joke Chain
- Replies: 46
- Views: 2861
Re: New Joke Chain
What band is a favorite amongst chemists?
di-uranium (U2)
di-uranium (U2)
- Sat Jan 23, 2021 1:03 pm
- Forum: Student Social/Study Group
- Topic: New Joke Chain
- Replies: 46
- Views: 2861
Re: New Joke Chain
Which chemical compound do UCLA students think is second-best?
Uranium Carbon Boron
(aka, UC Berkley)
hehe
Uranium Carbon Boron
(aka, UC Berkley)
hehe
- Sat Jan 23, 2021 1:01 pm
- Forum: Student Social/Study Group
- Topic: Comfort Movies
- Replies: 168
- Views: 22348
Re: Comfort Movies
Some of my most favorite movies to watch whenever I'm down are Shrek and Shrek 2(never disappoint), anything with Will Ferrel in them (Talladega Nights, Anchorman, Megamind), and obviously some star wars or marvel movie that I haven't rewatched in a while.
- Sat Jan 23, 2021 12:58 pm
- Forum: Student Social/Study Group
- Topic: Favorite Music
- Replies: 113
- Views: 9834
Re: Favorite Music
Ok don't @me for having the music taste of a dad but I love listening to music from the 60s/70s/80s. Queen, Elton John, The rolling stones, and David Bowie never disappoint. Prince really puts you in a good mood, and lately, I've been listening to Billy Joel on repeat. Anything you would hear on a r...
- Sat Jan 23, 2021 12:40 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Tutoring? [ENDORSED]
- Replies: 121
- Views: 240627
Re: Tutoring? [ENDORSED]
For the chemistry fraternity, Alpha Chi Sigma, does anyone know when they start offering tutoring? Is it week 3? I just checked and yes they are offering tutoring starting week 3. For chem 14B specifically, I've gotten to do two sessions with Selina Park! She's really nice and helpful :) Check thei...
- Sat Jan 23, 2021 12:38 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm 1 Allowed Materials and Procedure
- Replies: 6
- Views: 298
Re: Midterm 1 Allowed Materials and Procedure
Yep, just have your periodic table, equation sheet, calculator, and scratch paper if desired. Your TA will probably email you and go over it as well.
- Sat Jan 16, 2021 11:10 am
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm
- Replies: 7
- Views: 329
Re: Midterm
Most likely, the midterm will be multiple choice. Once again, it's not 100% confirmed, but all of our tests for 14A were structured that way. Usually, Lavelle offers good reviews thru UA sessions and stuff during Week 4, so do utilize them!
- Sat Jan 16, 2021 11:05 am
- Forum: Student Social/Study Group
- Topic: Exam Changes
- Replies: 12
- Views: 464
Re: Exam Changes
Yea this is the first time I'm hearing about this? Did lavelle discuss this during OH? My TA hasn't mentioned this yet.
- Sat Jan 16, 2021 11:03 am
- Forum: Student Social/Study Group
- Topic: Approaching Outlines
- Replies: 14
- Views: 622
Re: Approaching Outlines
For the outlines, I usually like to read through the chapter/sections and take notes. It's just another set of helpful info that goes along with the lectures, Audio-visual assignments, etc. The problems from the outline are very, very similar to what is given as practice by TA's and on the tests. Pl...
- Wed Jan 13, 2021 11:48 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008783
Re: Post All Chemistry Jokes Here
I think my chemistry teacher might be asleep...
Today there hasn't been even one reaction from him.
Today there hasn't been even one reaction from him.
- Mon Jan 11, 2021 1:30 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008783
Re: Post All Chemistry Jokes Here
idella 1D wrote:What is one of the worst compounds to use for chemistry?
Uranium Scandium
(USc)
proud to say that prof. Lavelle used this joke in today's lecture :D
- Fri Jan 08, 2021 11:13 am
- Forum: Administrative Questions and Class Announcements
- Topic: Chemistry Community Quota
- Replies: 16
- Views: 947
Re: Chemistry Community Quota
I personally would ask your TA, but Im sure you don't need to get 100 posts if you just entered this quarter. As long as you hit 5 per week, for ten weeks, and have 50 total I'm sure you will be fine!
Plus, I don't think they're mean enough to make you do double ;)
Plus, I don't think they're mean enough to make you do double ;)
- Fri Jan 08, 2021 11:11 am
- Forum: Administrative Questions and Class Announcements
- Topic: Sapling Assignments
- Replies: 30
- Views: 1682
Re: Sapling Assignments
Even though they are optional, it doesn't hurt to do them! Any and all practice is beneficial for this class
- Fri Jan 08, 2021 11:10 am
- Forum: Administrative Questions and Class Announcements
- Topic: Tutoring? [ENDORSED]
- Replies: 121
- Views: 240627
Re: Tutoring? [ENDORSED]
Hi! I know I've posted in this before but I was wondering if there are any updated tutoring sites/organizations? I think some are starting during week 3
- Fri Jan 08, 2021 11:09 am
- Forum: Student Social/Study Group
- Topic: Resources Outside of Class
- Replies: 6
- Views: 278
Re: Resources Outside of Class
Lavelle is able to offer us plenty of resources to use for this class, so I highly recommend you use them. First, the website he has (not ccle) has links to TA, UA, etc. sessions that are often during the week. There are step-up sessions and zooms designed to help you out, and you can drop in or lea...
- Sun Dec 13, 2020 11:13 am
- Forum: Student Social/Study Group
- Topic: Words of encouragement
- Replies: 14
- Views: 724
Re: Words of encouragement
Good luck everyone!
- Fri Dec 11, 2020 7:37 pm
- Forum: Student Social/Study Group
- Topic: Study References (Charts, Tables, Sheets)
- Replies: 6
- Views: 557
Re: Study References (Charts, Tables, Sheets)
The chart you shared was something I used a lot in high school chem and I found it very helpful. I also have this list of molecular shape geometry that I also used to help me out.
- Fri Dec 11, 2020 7:35 pm
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 18
- Views: 833
Re: Final
I remember way back during one of Lavelle's first few office hours of him stating how many problems on midterms and finals would be from/based on the textbook!
- Fri Dec 11, 2020 7:33 pm
- Forum: Naming
- Topic: coordination compounds with aqua
- Replies: 12
- Views: 689
Re: coordination compounds with aqua
Yep, OH2 personally. I think it's just something that's easier to remember that its H2O but writing it as OH2 can help if you're not so great with figuring out what bonds and what doesnt
- Wed Dec 09, 2020 1:46 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008783
Re: Post All Chemistry Jokes Here
What is one of the worst compounds to use for chemistry?
Uranium Scandium
(USc)
Uranium Scandium
(USc)
- Wed Dec 09, 2020 1:42 pm
- Forum: Student Social/Study Group
- Topic: lecture bruincast #29 problem
- Replies: 10
- Views: 469
Re: lecture bruincast #29 problem
it worked after like 20 min. of me just leaving it alone. I wonder what happened?
Also, I usually use the VPN anyway to view lectures so I think something might have just been temporarily down for some reason.
Also, I usually use the VPN anyway to view lectures so I think something might have just been temporarily down for some reason.
- Wed Dec 09, 2020 10:46 am
- Forum: Student Social/Study Group
- Topic: lecture bruincast #29 problem
- Replies: 10
- Views: 469
lecture bruincast #29 problem
is anyone else having trouble trying to view the lecture posted today? It says video file cannot be played...
- Tue Dec 08, 2020 7:58 pm
- Forum: Student Social/Study Group
- Topic: lavelle study review time??
- Replies: 3
- Views: 204
Re: lavelle study review time??
thank you guys!!
- Tue Dec 08, 2020 4:27 pm
- Forum: Naming
- Topic: Sapling #9 question 1
- Replies: 11
- Views: 619
Re: Sapling #9 question 1
Hi, this was very helpful and wanted to add in my compound for others to see a different example. Compound: [Co)NH 3 ) 5 Cl]Cl 2 Practically the same steps as Idella, Since NH3 is my ligand and there are five, I said Penta ammine. Next is the one chlorine, so I did not put a prefix just "chlor...
- Tue Dec 08, 2020 4:23 pm
- Forum: Naming
- Topic: Sapling #9 question 1
- Replies: 11
- Views: 619
Re: Sapling #9 question 1
Hi! I know that some people might have different numbers/questions depending on their account on sapling. Here is how I got the answer to name my first compound: Name the following compound: [Co(NH3)3 Cl3] First, since all of the compounds are in the bracket, I am not so worried. Since NH3 is my li...
- Tue Dec 08, 2020 4:21 pm
- Forum: Student Social/Study Group
- Topic: Favorite TV shows
- Replies: 277
- Views: 34371
Re: Favorite TV shows
Can't wait to binge watch my favorite shows after the quarter is done! Some of them include the Crown (Netflix), Great British Bakeoff (Netflix), The Mandolorian (DisneyPlus), and Umbrella Academy (Netflix) I also have a big love for the cooking channel/food network. Chopped and all the baking champ...
- Tue Dec 08, 2020 4:19 pm
- Forum: Student Social/Study Group
- Topic: lavelle study review time??
- Replies: 3
- Views: 204
lavelle study review time??
Hi! I hope i don't seem dumb but what time is prof. lavelle's review session tomorrow (Wednesday)? I swear I can't find it on any of the announcements or emails. I might just be overwhelmed with studying lol
- Tue Dec 08, 2020 4:17 pm
- Forum: Student Social/Study Group
- Topic: Practice Exam for Final
- Replies: 23
- Views: 1147
Re: Practice Exam for Final
Lillian wrote:Halle Villalobos 3C wrote:Hi! I believe there is a link to a google drive test bank folder in the class GroupMe that has past exams. Good luck with finals!
Ooohh! Noted!
what groupme class would it be? i think I left one of them way back during midterms haha
- Tue Dec 08, 2020 4:16 pm
- Forum: Student Social/Study Group
- Topic: Week 10 Review Sessions
- Replies: 7
- Views: 339
Re: Week 10 Review Sessions
I won't lie, I am trying to attend around 3 a day! I'm trying to do a session from at least every TA and at least once for each subject. I know everyone's schedule is different, but this is what worked for me. Try to go to as many as you can! Reviewing old topics has proven to be good because althou...
- Sat Dec 05, 2020 2:57 pm
- Forum: Naming
- Topic: Helpful Videos for Naming
- Replies: 22
- Views: 1032
Helpful Videos for Naming
Hi all! I just wanted to share some very helpful videos that can are great to understanding naming compounds and beyond. I relied heavily on some of these in Honors and AP Chem, and they can hold true for Chem 14A too in my opinion. Feel free to check them out if you are having issues with compound ...
- Sat Dec 05, 2020 2:11 pm
- Forum: Naming
- Topic: Coordination Compound vs complex ion
- Replies: 4
- Views: 2636
Re: Coordination Compound vs complex ion
A complex is a species containing a metal atom in its center or an ion, to which a number of molecules, or ions, is attached by coordinate covalent bonds. More specifically, a complex ion has a metal ion at its center (basically what I said in the previous sentence). A coordination complex is a comp...
- Sat Dec 05, 2020 1:47 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: ligand names
- Replies: 10
- Views: 511
Re: ligand names
there is a very helpful table I found of common ligands in Sapling. It was taken from the Focus 9C.1 Section. I also think that once you do a significant amount of practice, you're just going to start remembering all those ligand names. Like even with just doing a few problems naming with OH2 I reme...
- Fri Dec 04, 2020 1:44 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: homework 9 #5
- Replies: 6
- Views: 325
Re: homework 9 #5
I have a slightly different equation for #5 but here is what I did: (and yes, en represents ethylenediamine which will be 2 "spots" of sorts) I find it helpful to draw out the lewis structures for each of the compounds. For the ones inside the bracket, they are connected to each other. Som...
- Fri Dec 04, 2020 1:39 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Sapling hw#9 question 2?
- Replies: 3
- Views: 243
Re: Sapling hw#9 question 2?
Summer_Corona 3F wrote:After looking at your answer the only one you seem to have wrong is [Co(SO4)(NH3)5]. You placed it in box two but I think what you're missing is that there are five NH3 molecules and one SO4, therefore, the coordination number would be 6
thank you! isee what I did wrong haha
- Fri Dec 04, 2020 1:21 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Sapling hw#9 question 2?
- Replies: 3
- Views: 243
Sapling hw#9 question 2?
I'm having some difficulty sorting out the ligands for this question: Classify each of the coordination compounds according to the coordination number I put my chart (I know it's wrong) but I would appreciate any pointers to show what molecules I have wrong. I'm just a tad stuck... I know that the c...
- Fri Dec 04, 2020 1:15 pm
- Forum: Naming
- Topic: Sapling #9 question 1
- Replies: 11
- Views: 619
Sapling #9 question 1
Hi! I know that some people might have different numbers/questions depending on their account on sapling. Here is how I got the answer to name my first compound: Name the following compound: [Co(NH3)3 Cl3] First, since all of the compounds are in the bracket, I am not so worried. Since NH3 is my lig...
- Thu Dec 03, 2020 1:45 pm
- Forum: Student Social/Study Group
- Topic: Big Sad: Midterm 2
- Replies: 86
- Views: 5456
Re: Big Sad: Midterm 2
I'm really worried because I did significantly worse on my second midterm compared to my first (and I was complaining about it) I mean, I am able to pass but back then I was worried about not getting an A- but now I'm worried I might not get a B. I just feel so upset because I went over my midterm w...
- Thu Dec 03, 2020 1:37 pm
- Forum: Naming
- Topic: Ferrate or iron?
- Replies: 8
- Views: 624
Re: Ferrate or iron?
Ferrate was used at least by my TA when dealing with Iron. It is because it's the latin "ferra" and then the "-ate" at the end of the ion. I don't think it matters, but since -ferr was being used by my TA (and the UA in your case) I am assuming that is what is recommended.
- Thu Dec 03, 2020 1:34 pm
- Forum: Student Social/Study Group
- Topic: Calculating final grade
- Replies: 2
- Views: 178
Re: Calculating final grade
I've also heard people saying how in the past, there might be some lee-way in how final grades might be calculated. Such as, how Lavelle might look into the overall average and might change the points. I know there is no curve.
- Sun Nov 29, 2020 5:57 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: molecule shape polarity
- Replies: 5
- Views: 290
Re: molecule shape polarity
Thank you!! :)
- Sun Nov 29, 2020 5:56 pm
- Forum: Student Social/Study Group
- Topic: How have your study habits changed?
- Replies: 45
- Views: 1780
Re: How have your study habits changed?
Honestly, since everything is online for the time being my habits have changed dramatically. I oftentimes would take notes, drawings, etc. all by hand since I tend to learn best visually and with stuff that's hands-on. Since I'm now staring at a screen all day, I find that I just type up everything ...
- Sun Nov 29, 2020 5:54 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008783
Re: Post All Chemistry Jokes Here
Why shouldn't you drink water while studying?
It decreases your concentration :)
It decreases your concentration :)
- Sun Nov 29, 2020 5:52 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent
- Replies: 9
- Views: 453
Re: Bent
Yes!! It confused me too because I would use angular back in Chem in highschool. It does mean the same thing :)
- Sun Nov 29, 2020 5:51 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Sapling #3
- Replies: 5
- Views: 299
Re: Sapling #3
Since there are 6 total electron groups, 5 outer atoms, and 1 lone pair, it should be categorized as a square pyramidal. As mentioned above, there is a very helpful diagram that helps to figure out each and every shape.
- Sun Nov 29, 2020 5:49 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: molecule shape polarity
- Replies: 5
- Views: 290
molecule shape polarity
Hello! I was wondering if anyone can help explain the polarity stuff for this question. I am a bit confused...
For each molecule, specify the polarity of the bonds and the overall polarity of the molecule.
Molecules: BeCl2 and H2O
Thanks!
For each molecule, specify the polarity of the bonds and the overall polarity of the molecule.
Molecules: BeCl2 and H2O
Thanks!
- Sun Nov 22, 2020 12:25 pm
- Forum: Student Social/Study Group
- Topic: Exercising Our Minds and Bodies
- Replies: 120
- Views: 15258
Re: Exercising Our Minds and Bodies
I love to go walk in the evening as the sun starts to set. It's a good way to rest your mind and just focus on what's ahead of you. Plus, the sunsets are always wonderful to look at