Search found 105 matches

by Juliana Rosales 1H
Sun Feb 28, 2021 10:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8795
Views: 1493885

Re: Post All Chemistry Jokes Here

The real joke is me being in this chemistry class right now
by Juliana Rosales 1H
Sun Feb 28, 2021 10:22 pm
Forum: Balancing Redox Reactions
Topic: Sapling #18
Replies: 5
Views: 21

Re: Sapling #18

I just wanted two share that I had the same trouble you did and I can't help but laugh at myself becuase I was changing the wrong H2O and wondering why my question was wrong lol. Its a relief to have finally gotten it right though
by Juliana Rosales 1H
Sun Feb 28, 2021 9:58 pm
Forum: Balancing Redox Reactions
Topic: Sapling #5
Replies: 2
Views: 34

Re: Sapling #5

Im having trouble with the same one and I still can't get it lol
by Juliana Rosales 1H
Sun Feb 28, 2021 9:48 pm
Forum: Student Social/Study Group
Topic: Final
Replies: 43
Views: 102

Re: Final

I might go and try to rewatch the lectures for the newer material that will be on the final. I really need the points so I will probably attend any meetings that I can
by Juliana Rosales 1H
Sun Feb 28, 2021 9:47 pm
Forum: General Science Questions
Topic: Midterm 2 Reactions
Replies: 70
Views: 201

Re: Midterm 2 Reactions

My score isn't out yet, or maybe I haven't looked in the right place, but I am probably going to be devastated when I get my score back
by Juliana Rosales 1H
Sun Feb 21, 2021 9:34 pm
Forum: Student Social/Study Group
Topic: Midterm 2 Nerves
Replies: 40
Views: 168

Re: Midterm 2 Nerves

Im so nervous about this upcoming midterm because first off, I don't even know when it is, and then I have so much material to catch up on lol. We'll se how things go. The midterm is going to be on Friday at the lecture time that you're signed up for. I'm also pretty but hopefully if we work hard e...
by Juliana Rosales 1H
Sun Feb 21, 2021 9:32 pm
Forum: Student Social/Study Group
Topic: Points needed to pass?
Replies: 64
Views: 232

Re: Points needed to pass?

200 points in this class will get you a C-. That would be 50%. Also if you are in a certain major maybe check to see if a C is the lowest grade you can get
by Juliana Rosales 1H
Sun Feb 21, 2021 9:29 pm
Forum: Student Social/Study Group
Topic: Culinary Chemistry
Replies: 70
Views: 431

Re: Culinary Chemistry

In all honestly when I do stuff like baking I am reminded of balancing equations and the likes. It ruins my mood for the most part to think about chemistry outside of class time, so to make up for it I usually add a little more or less then the required amount just so everything is not exact. On top...
by Juliana Rosales 1H
Sun Feb 21, 2021 9:22 pm
Forum: Student Social/Study Group
Topic: Culinary Chemistry
Replies: 70
Views: 431

Re: Culinary Chemistry

Additionally I have been interested in finding out why oil fires need to be put out with a fire extinguisher and not water. I saw online a demonstration of what happens when you put water on an oil fire and I really don't understand why it happens, but Im assuming its some type of chemical reaction.
by Juliana Rosales 1H
Sun Feb 21, 2021 9:21 pm
Forum: Student Social/Study Group
Topic: Culinary Chemistry
Replies: 70
Views: 431

Re: Culinary Chemistry

The only thing I think that I really have to contribute to this thread is about this lady I saw on TikTok who put baking soda in a pot of boiling water and it like foamed up and spread all over the kitchen. Usually putting something in water is a physical change I think, so I thought it was really i...
by Juliana Rosales 1H
Sun Feb 21, 2021 9:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm 2 and Final
Replies: 25
Views: 134

Re: Midterm 2 and Final

Yeah! As far as things have gone so far, things will be the same in this class as they were for 14A
by Juliana Rosales 1H
Sun Feb 14, 2021 10:54 pm
Forum: Student Social/Study Group
Topic: Midterm 2 Nerves
Replies: 40
Views: 168

Re: Midterm 2 Nerves

Im so nervous about this upcoming midterm because first off, I don't even know when it is, and then I have so much material to catch up on lol. We'll se how things go.
by Juliana Rosales 1H
Sun Feb 14, 2021 10:52 pm
Forum: Administrative Questions and Class Announcements
Topic: struggling
Replies: 73
Views: 267

Re: struggling

Just know that at least you are trying! Personally it is EXTREMELY hard for me to even attempt to do as much as your doing, so try not to be too stressed about it.
by Juliana Rosales 1H
Sun Feb 14, 2021 10:48 pm
Forum: Student Social/Study Group
Topic: Points needed to pass?
Replies: 64
Views: 232

Re: Points needed to pass?

I wasn't exactly sure either, but now I am after reading this post. Now I think I am going to have to see how many points I have lol. I know I already missed out on some.
by Juliana Rosales 1H
Sun Feb 14, 2021 9:55 pm
Forum: Student Social/Study Group
Topic: Sapling Week 5/6
Replies: 3
Views: 26

Re: Sapling Week 5/6

Round of applause to you! I was here trying to get all the help I could because I can only solve about three problems. Now I'll have more time to struggle with this lol. In all realness though, thank you for asking this because I would have just ended up giving up and not doing them at all.
by Juliana Rosales 1H
Sun Feb 14, 2021 8:25 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Sapling week 5/6 #20
Replies: 12
Views: 76

Re: Sapling week 5/6 #20

This was a huge lifesaver! I kept trying to figure out what I was doing wrong! I don't think I would have thought about putting spontaneous on the top.
by Juliana Rosales 1H
Sun Feb 14, 2021 7:54 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Sapling 3
Replies: 13
Views: 73

Re: Sapling 3

Just wanted to say that this thread is amazing. I am completely lost at what to do for this problem so having the extra explained steps here really helps.
by Juliana Rosales 1H
Mon Feb 08, 2021 12:01 am
Forum: Phase Changes & Related Calculations
Topic: Sapling week 4 problem 10
Replies: 4
Views: 21

Re: Sapling week 4 problem 10

I was so lost on this problem! thank you for the explaination it really helped!
by Juliana Rosales 1H
Sun Feb 07, 2021 11:59 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Sapling #14B W3/4
Replies: 4
Views: 35

Re: Sapling #14B W3/4

Hello! this is how i did it to calculate path A, i just used the equation w = -P1V1 ln(V2/V1) in your case, it would be -(2.32)(4.41)(ln(8.39/4.41))=-6.58L atm but we would need to convert it to joules so you multiply it by 101.3 to get -666.5J To calculate path B you use the equation w=-Pex*deltaV...
by Juliana Rosales 1H
Sun Feb 07, 2021 11:57 pm
Forum: Calculating Work of Expansion
Topic: Week 3/4 Sapling Homework: #15
Replies: 9
Views: 52

Re: Week 3/4 Sapling Homework: #15

You can use either and still get the correct answer!
by Juliana Rosales 1H
Sun Feb 07, 2021 11:55 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Sapling Homework #10
Replies: 6
Views: 46

Re: Sapling Homework #10

I understand where you're coming from! I had so much trouble trying to find an equation that worked to figure out the answer.
by Juliana Rosales 1H
Sun Feb 07, 2021 11:53 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Sapling week 3&4 #14
Replies: 3
Views: 21

Re: Sapling week 3&4 #14

Just wanted to say that I had problems with the two different equations as well! I was able to understand the equations I just could grasp the whole path A and B thing
by Juliana Rosales 1H
Sun Feb 07, 2021 11:52 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Sapling Question 19
Replies: 3
Views: 52

Re: Sapling Question 19

Thanks for including the example from the textbook! It really helped as an example for this question.
by Juliana Rosales 1H
Sun Feb 07, 2021 11:25 pm
Forum: Calculating Work of Expansion
Topic: Sapling #14
Replies: 11
Views: 69

Re: Sapling #14

I just wanted to say that this thread was so helpful. I was able to understand a big part of this problem thanks to it, even though I wasn't actually able to solve it in the end
by Juliana Rosales 1H
Sun Feb 07, 2021 11:22 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: hw #11
Replies: 5
Views: 35

Re: hw #11

Did you use -50g(4.184)(Tfinal-25) and just kind of solve for Tfinal like you would solve for x?
by Juliana Rosales 1H
Sun Feb 07, 2021 11:21 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: hw #11
Replies: 5
Views: 35

Re: hw #11

Im using the same set up and getting a wrong answer lol. Im not sure what I am doing wrong either
by Juliana Rosales 1H
Sun Feb 07, 2021 11:15 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Sapling Week 3/4 #11
Replies: 5
Views: 26

Re: Sapling Week 3/4 #11

Ranen_Chang_2G wrote:For the specific heat of water, do we just assume that it is 4.184 J/(g*C)?

I believe the we do! We might have to convert it is the question asks, but unless it is described o defined as something else then 4.184 should be used
by Juliana Rosales 1H
Sun Feb 07, 2021 11:14 pm
Forum: Phase Changes & Related Calculations
Topic: Sapling #13, Constant Pressure
Replies: 8
Views: 24

Re: Sapling #13, Constant Pressure

Hey thanks for mentioning this! When I first read about constant pressure thing I was a little confused and wasn't able to grasp the question correctly! these definitions and explanations definitely helped me a lot. Hopefully Ill be able to solve it now lol.
by Juliana Rosales 1H
Mon Jan 25, 2021 12:01 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Sapling week 2 #8
Replies: 8
Views: 47

Re: Sapling week 2 #8

This whole thread was amazing! I had so much trouble with this problem and ts all helped so much!
by Juliana Rosales 1H
Sun Jan 24, 2021 11:58 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Sapling HW Week 2 Question #6
Replies: 7
Views: 63

Re: Sapling HW Week 2 Question #6

I actually don't know either lol. I plan to watch the lectures about it and maybe read the textbook about it. All I have been able to understand is that the first step would be to identify the strong base or said in the compound. from there I am not sure what to do. There are some resources in the ...
by Juliana Rosales 1H
Sun Jan 24, 2021 3:33 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Sapling HW Week 2 Question #6
Replies: 7
Views: 63

Re: Sapling HW Week 2 Question #6

I actually don't know either lol. I plan to watch the lectures about it and maybe read the textbook about it. All I have been able to understand is that the first step would be to identify the strong base or said in the compound. from there I am not sure what to do.
by Juliana Rosales 1H
Sun Jan 24, 2021 3:24 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Sapling Week 2 #7
Replies: 6
Views: 145

Re: Sapling Week 2 #7

The attached picture really helped me out! thanks for sharing it. It really helps me understand the steps I need to take.
by Juliana Rosales 1H
Sun Jan 24, 2021 3:17 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling Week 2 Question 3
Replies: 5
Views: 33

Re: Sapling Week 2 Question 3

I had a similar issue! I have the same problem as you, but I think I will try it with the approximation and without. I know the professor said something about a cutoff at 10 to the 4th, but I don't know if that applies to sapling as well.
by Juliana Rosales 1H
Sun Jan 17, 2021 9:54 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling Week 1 #6
Replies: 10
Views: 60

Re: Sapling Week 1 #6

Hey just wanted to let you know that you might want to change your username since it looks like its your student ID number right now.
by Juliana Rosales 1H
Sun Jan 17, 2021 9:52 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Week 1 Sapling #10
Replies: 6
Views: 47

Re: Week 1 Sapling #10

I am literally having the same problem. I have the first part of the problem solved but I can't figure out where I am going wrong on the second part
by Juliana Rosales 1H
Sun Jan 17, 2021 9:21 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Week 1 Sapling 3
Replies: 11
Views: 69

Re: Week 1 Sapling 3

yes You can use the quadratic equation with this!
by Juliana Rosales 1H
Sun Jan 17, 2021 9:18 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling HW Week 1 #5
Replies: 8
Views: 50

Re: Sapling HW Week 1 #5

Hi! So this is all about combining/adding K values to solve for a different chemical equation's equilibrium constant. First you can recognize that the 3rd equation given is a part of the equation you're solving for, but backward. To find the K value of a backward equation it is 1/k. The other equat...
by Juliana Rosales 1H
Sun Jan 17, 2021 9:17 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling HW Week 1 #5
Replies: 8
Views: 50

Re: Sapling HW Week 1 #5

Thank you for asking this question! I had the same problem and I was really confused about how to approach it !
by Juliana Rosales 1H
Sun Jan 10, 2021 10:14 pm
Forum: Ideal Gases
Topic: Non-Ideal gases?
Replies: 26
Views: 154

Re: Non-Ideal gases?

We won't be using them in this course!
by Juliana Rosales 1H
Sun Jan 10, 2021 10:10 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: H2O as a Gas
Replies: 69
Views: 459

Re: H2O as a Gas

It depends on the state that it is in. Wether it is a gas or a liquid.
by Juliana Rosales 1H
Sun Jan 10, 2021 10:03 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Units
Replies: 27
Views: 116

Re: Units

It should be atm!
by Juliana Rosales 1H
Sun Jan 10, 2021 9:51 pm
Forum: Ideal Gases
Topic: T variable in pv=nrt [ENDORSED]
Replies: 38
Views: 325

Re: T variable in pv=nrt [ENDORSED]

I would say always to assume kelvin unless Celsius is specified.
by Juliana Rosales 1H
Sun Jan 10, 2021 9:50 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling HW 1 #5
Replies: 8
Views: 70

Re: Sapling HW 1 #5

Thanks for asking this question! I was having trouble with this question and I made the exact same mistake lol.
by Juliana Rosales 1H
Wed Dec 16, 2020 3:41 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Determining Shape
Replies: 10
Views: 146

Re: Determining Shape

Thank you for asking this question!
by Juliana Rosales 1H
Wed Dec 16, 2020 3:39 pm
Forum: Trends in The Periodic Table
Topic: Periodic Trends Summarized
Replies: 6
Views: 79

Re: Periodic Trends Summarized

I personally write a bunch of arrows on my periodic table
by Juliana Rosales 1H
Wed Dec 16, 2020 3:38 pm
Forum: Trends in The Periodic Table
Topic: Ionic radius trends
Replies: 7
Views: 119

Re: Ionic radius trends

They decrease!
by Juliana Rosales 1H
Wed Dec 16, 2020 3:33 pm
Forum: Trends in The Periodic Table
Topic: Atomic Radius
Replies: 8
Views: 69

Re: Atomic Radius

I think it should be Fe2
by Juliana Rosales 1H
Wed Dec 16, 2020 3:32 pm
Forum: SI Units, Unit Conversions
Topic: unit conversions
Replies: 24
Views: 280

Re: unit conversions

I personally just leave it
by Juliana Rosales 1H
Wed Dec 16, 2020 2:20 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Week 10 Sapling Q10
Replies: 5
Views: 49

Re: Week 10 Sapling Q10

After you pick out the strongest acids and bases, just mitch and match the other ones in between and you are bound to get the right answer.
by Juliana Rosales 1H
Sun Dec 06, 2020 9:41 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8795
Views: 1493885

Re: Post All Chemistry Jokes Here

I don't have any jokes per say but I have a pair of his and hers mugs.

H-Hydrogen
Er- Erbium
S- Sulfur

I used to think they were pretty funny until I started to take chem again.
by Juliana Rosales 1H
Sun Dec 06, 2020 9:37 pm
Forum: *Stereochemistry
Topic: stereochemistry reference
Replies: 6
Views: 202

Re: stereochemistry reference

The only time I ever herd this mentioned was in an earlier lecture where he mentioned it. However, I might have it mixed up with another word, but I thought it was this one.
by Juliana Rosales 1H
Sun Dec 06, 2020 9:36 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Naming Coordination Compounds
Replies: 7
Views: 65

Re: Naming Coordination Compounds

From reading all of these replies the only answer I got is that there are multiple ways to find it, its juts that you have to hope to get an easy compound
by Juliana Rosales 1H
Sun Dec 06, 2020 9:31 pm
Forum: Naming
Topic: Naming quizlet
Replies: 41
Views: 304

Re: Naming quizlet

thank you so much for posting this! It is extremely helpful
by Juliana Rosales 1H
Sun Dec 06, 2020 7:31 pm
Forum: Naming
Topic: Sapling Week 9 #1
Replies: 6
Views: 63

Re: Sapling Week 9 #1

Okay to be honest I had already tried this problem 15 times before i saw this post and I still couldn't get the right answer. Thank you for asking it because it helped me understand how to get the correct answer.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:53 pm
Forum: Octet Exceptions
Topic: Expanded Octet Question
Replies: 8
Views: 85

Re: Expanded Octet Question

All the replies to this post were super helpful. I wasn't really able to understand the concept until I read the explanations here. Thank you for asking this question because I do not think that I would have found the correct words for the question.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:51 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling #3 Bond Angle
Replies: 8
Views: 90

Re: Sapling #3 Bond Angle

I hope you were able to get it!
by Juliana Rosales 1H
Sun Nov 29, 2020 6:48 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling week 8 #17
Replies: 7
Views: 62

Re: Sapling week 8 #17

I honestly do not know how to tell, but I could not think of any other ways to try to draw it.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:47 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling #3 Bond Angle
Replies: 8
Views: 90

Re: Sapling #3 Bond Angle

Just in case you were still having trouble with this one, I got 85.1 degrees fro mine. Many of the replies before mine explain how to kind of get to that value, but just in case there was some miscalculation.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:44 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: #13 Sapling Week 8
Replies: 18
Views: 109

Re: #13 Sapling Week 8

I had the exact same problem! This was also one of the last problems that I had to answer and it was really stressing me out. But no worries, I'm sure many of us were confused by this one.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:42 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling #3
Replies: 5
Views: 97

Re: Sapling #3

Hi I think the previous replies explain the process on how to get the solution, but just so that you can compare the answer should be 85.1 degrees I believe.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:40 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling #13
Replies: 3
Views: 33

Re: Sapling #13

You are one of the only posts about number 13, and thank you for that, I really was confused with this problem and it seemed like everyone just kind of new it. I literally could not figure out the shape, so I am super grateful you asked this question.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:35 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: sapling #12
Replies: 13
Views: 133

Re: sapling #12

Looks like you got this sorted out already lol. I literally just went through the same process trying to get the correct drawing. I had forgotten about the lone pairs that O had and kept getting the problem inncorrect.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:30 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling Week 7/8 HW #12
Replies: 8
Views: 104

Re: Sapling Week 7/8 HW #12

Also I believe that for this specific compound the empirical and molecular formula are the same.
by Juliana Rosales 1H
Sun Nov 29, 2020 6:29 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sapling Week 7/8 HW #12
Replies: 8
Views: 104

Re: Sapling Week 7/8 HW #12

I am so glad that you posted this problem. I was having a hard time with it and it was super hard for me to understand. This post helped out a lot.
by Juliana Rosales 1H
Sun Nov 22, 2020 2:15 pm
Forum: Resonance Structures
Topic: Valence Electrons [ENDORSED]
Replies: 43
Views: 380

Re: Valence Electrons [ENDORSED]

He probably knows from doing them so much and for so long. I can tell by looking at the column that they are it. On the top of the periodic columns there are numbers that will label the column.
by Juliana Rosales 1H
Sun Nov 22, 2020 2:12 pm
Forum: Lewis Structures
Topic: Guidelines on Drawing Lewis Structures
Replies: 4
Views: 47

Re: Guidelines on Drawing Lewis Structures

This was a really good question lol. I would always play around and see which atoms would work where. I didn't know there was an actual reason why one was in the middle. This post really helped
by Juliana Rosales 1H
Sun Nov 22, 2020 2:05 pm
Forum: Electronegativity
Topic: Periodic trend
Replies: 17
Views: 187

Re: Periodic trend

If you google periodic trends and click on the first image that pops up it is pretty good. I just always reference one of those images and its easier to understand and read for me.
by Juliana Rosales 1H
Sun Nov 22, 2020 2:00 pm
Forum: Ionic & Covalent Bonds
Topic: Polar Covalent Bond
Replies: 8
Views: 88

Re: Polar Covalent Bond

Honestly I don't even know how to tell by myself, but reading this thread really helped me understand what the differences were.
by Juliana Rosales 1H
Sun Nov 22, 2020 1:38 pm
Forum: Ionic & Covalent Bonds
Topic: Polar/ Nonpolar
Replies: 23
Views: 180

Re: Polar/ Nonpolar

If you can tell based off of shape that is a very good way to figure it out, but it is always good to check with a other method if you can. I would say that It would be good for a quick guess, but you always want to be absolutely sure on some problems.
by Juliana Rosales 1H
Sun Nov 15, 2020 6:20 pm
Forum: Properties of Light
Topic: Sapling hw question old
Replies: 3
Views: 50

Re: Sapling hw question old

Thank you so much for your help! It totally makes sense.
by Juliana Rosales 1H
Sun Nov 15, 2020 6:18 pm
Forum: Lewis Structures
Topic: Nitrite vs Nitrate
Replies: 17
Views: 154

Re: Nitrite vs Nitrate

Nitrate is (NO3)- and nitrite is (NO2)-. Between the two its just a difference of an oxygen. I can only assume that -ate and -ite have something to do with telling how many oxygen there are supposed to be
by Juliana Rosales 1H
Sun Nov 15, 2020 6:14 pm
Forum: Lewis Structures
Topic: Sapling week 5/6 Question 3
Replies: 5
Views: 57

Re: Sapling week 5/6 Question 3

In the feedback that sapling gives you it tells you all of the equations or whatever they are called. its No3 - and the such. I do think I saw someone else mention trying to memorizing them on another post but I am not so sure about that. I know i didn't know the equation when i read the name lol.
by Juliana Rosales 1H
Sun Nov 08, 2020 10:46 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Sapling #4
Replies: 8
Views: 77

Re: Sapling #4

I had the same trouble with this problem but when i tried to use the equation I still couldn't get the right answer. I was confused about the second part too because I didn't know what to do lol.
by Juliana Rosales 1H
Sun Nov 08, 2020 10:44 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Subshell Energies
Replies: 6
Views: 53

Re: Subshell Energies

Honestly I don't know the answer either, but I'm really glad that you asked this because I was really confused about it too.
by Juliana Rosales 1H
Sun Nov 08, 2020 10:42 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: S and P electrons
Replies: 14
Views: 116

Re: S and P electrons

Its because p electrons are farther from the nucleus and thus have more energy while the other one is closer and so it has less.
by Juliana Rosales 1H
Sun Nov 08, 2020 10:39 pm
Forum: Properties of Light
Topic: Is c always the speed of light?
Replies: 88
Views: 506

Re: Is c always the speed of light?

yes. Its either going to be that one constant, or you'll be given the info to calculate whatever number they want you to
by Juliana Rosales 1H
Sun Nov 08, 2020 10:38 pm
Forum: Trends in The Periodic Table
Topic: memorizing trends
Replies: 14
Views: 59

Re: memorizing trends

My TA showed us a picture of a periodic table that had big arrows in all these directions that showed how a trend would increase or decrease within the table. If you know the yourself I recommend drawing your own, or you could always google it.
by Juliana Rosales 1H
Sun Nov 08, 2020 10:35 pm
Forum: Properties of Light
Topic: Sapling hw question old
Replies: 3
Views: 50

Sapling hw question old

Hey yall I had a problem with this hw question on sapling . When a metal was exposed to photons at a frequency of 1.23×1015 s−1, electrons were emitted with a maximum kinetic energy of 3.60×10−19 J. Calculate the work function, Φ, of this metal. I calculated it and got 4.55 x 10^19, and it said that...
by Juliana Rosales 1H
Sun Nov 01, 2020 11:46 pm
Forum: Properties of Electrons
Topic: Sapling #24
Replies: 7
Views: 74

Re: Sapling #24

If you add the picture of the line side by side they should be continuous. That’s how you will know
by Juliana Rosales 1H
Sun Nov 01, 2020 11:19 pm
Forum: Properties of Light
Topic: Sapling Homework Question 7
Replies: 5
Views: 86

Re: Sapling Homework Question 7

First multiply the grams of ice you are given by 333.6
by Juliana Rosales 1H
Sun Nov 01, 2020 11:08 pm
Forum: Properties of Light
Topic: Wavelength
Replies: 26
Views: 221

Re: Wavelength

It would depend on what the question is asking, but other than that do what’s easiest for you
by Juliana Rosales 1H
Sun Nov 01, 2020 11:07 pm
Forum: Properties of Light
Topic: Sapling Hw #5
Replies: 5
Views: 87

Re: Sapling Hw #5

The first thing you would do would be to multiply the grams of ice by 333.6
by Juliana Rosales 1H
Sun Nov 01, 2020 11:02 pm
Forum: Properties of Light
Topic: Sapling Homework week 2 problem 5
Replies: 11
Views: 138

Re: Sapling Homework week 2 problem 5

I had trouble with this one too! Lol
by Juliana Rosales 1H
Sun Nov 01, 2020 11:01 pm
Forum: Properties of Light
Topic: Sapling Homework week 2 problem 5
Replies: 11
Views: 138

Re: Sapling Homework week 2 problem 5

I had trouble with this one too! Lol
by Juliana Rosales 1H
Mon Oct 26, 2020 12:06 am
Forum: Empirical & Molecular Formulas
Topic: Sapling Week 1 #8
Replies: 23
Views: 237

Re: Sapling Week 1 #8

I was super confused with this one as well lol. It took me a while to realize that i just needed to count the Hs and stuff in the picture and use the periodic table to calculate the stuff you need.
by Juliana Rosales 1H
Mon Oct 26, 2020 12:04 am
Forum: Empirical & Molecular Formulas
Topic: Ion symbols
Replies: 4
Views: 84

Re: Ion symbols

I think that with ions, it means that there is like a different charge from what it originally is. I think it has to do either with the amount of electrons or protons.
by Juliana Rosales 1H
Mon Oct 26, 2020 12:00 am
Forum: Balancing Chemical Reactions
Topic: Balancing Chemical Reactions Order
Replies: 31
Views: 270

Re: Balancing Chemical Reactions Order

There is no order but I go from left to right.
by Juliana Rosales 1H
Sun Oct 25, 2020 11:59 pm
Forum: Balancing Chemical Reactions
Topic: Tips for Complicated Chemical Reactions
Replies: 6
Views: 88

Re: Tips for Complicated Chemical Reactions

I feel you. I always move from left to right in whatever order an element will come up in. Then off to the side I also write all the elements that are in the equation and make sure that the values are the same on each side. I really just double check my work a lot.
by Juliana Rosales 1H
Sun Oct 25, 2020 11:57 pm
Forum: SI Units, Unit Conversions
Topic: Can someone explain Avogrado's #?
Replies: 8
Views: 93

Re: Can someone explain Avogrado's #?

I don't actually know what it is at all but thanks for asking this because I can look through the replies for the answer now!
by Juliana Rosales 1H
Sun Oct 25, 2020 11:56 pm
Forum: SI Units, Unit Conversions
Topic: Other conversions for the Midterm
Replies: 4
Views: 51

Re: Other conversions for the Midterm

There are little charts online that have them all in order with the prefixes and stuff. I find it helpful to look at those or at least tr to memorize from there.
by Juliana Rosales 1H
Sun Oct 25, 2020 11:54 pm
Forum: SI Units, Unit Conversions
Topic: Midterm
Replies: 26
Views: 231

Re: Midterm

I think that its all multiple choice and then some questions you can get full points and then get partial credit.
by Juliana Rosales 1H
Sun Oct 25, 2020 11:52 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical and Molecular Formulas
Replies: 9
Views: 133

Re: Empirical and Molecular Formulas

Basically, the ratios are the same for the molecular and the empirical formulas.if they are not something is wrong.
by Juliana Rosales 1H
Sun Oct 18, 2020 9:12 pm
Forum: Empirical & Molecular Formulas
Topic: Molecular vs. Formula Units
Replies: 5
Views: 79

Re: Molecular vs. Formula Units

Thank you for asking this because I was having a similar problem understanding the concepts.
by Juliana Rosales 1H
Sun Oct 18, 2020 9:08 pm
Forum: Limiting Reactant Calculations
Topic: Unit clarification
Replies: 3
Views: 56

Re: Unit clarification

It means ton.
by Juliana Rosales 1H
Sun Oct 18, 2020 9:06 pm
Forum: Significant Figures
Topic: SI UNITS
Replies: 12
Views: 109

Re: SI UNITS

I would go with how ever many figures are in any values mentioned in the question, just to be consistent.
by Juliana Rosales 1H
Sun Oct 18, 2020 8:25 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Molar Mass and Molecular Mass Difference?
Replies: 21
Views: 312

Re: Molar Mass and Molecular Mass Difference?

They are the same thing but with different units. The units matter because then the answer will be wrong.
by Juliana Rosales 1H
Sun Oct 18, 2020 8:16 pm
Forum: Balancing Chemical Reactions
Topic: Periodic Table
Replies: 50
Views: 488

Re: Periodic Table

No, just know how to read it.
by Juliana Rosales 1H
Fri Oct 09, 2020 8:47 am
Forum: Significant Figures
Topic: Sig Figs for Molar Mass
Replies: 14
Views: 117

Re: Sig Figs for Molar Mass

Personally I use whatever value the sapling periodic table has, including all the values after the decimal point that it might include. Try not to round because that will make your final answer stray further from the actual answer. Only round at the end.

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