CHEMISTRY COMMUNITY

Anusha Chaudhary 1J

This was a joke I saw on social media that reminded me of our kinetics unit.

"Physical Chemistry: The pitiful attempt at applying y = mx + b to everything in the universe."

Anusha Chaudhary 1J

Okay, so "The Organic Chemistry Tutor" on youtube has a series where he explains kinetics that I found extremely helpful, and I highly recommend!

Anusha Chaudhary 1J

It's a tie between redox and chemical equilibrium. Both overall just makes a lot of sense to me, so I enjoy doing them - especially in a class where I have no clue whats going on 99% of the time :'(

Anusha Chaudhary 1J

I try to stop studying around 6 the night before an exam because I know if I don't sleep/ think about it too much before I'm gonna have extreme anxiety during the test and won't be able to do well. Try to spend some time tonight doing something you like to do. Exercising, playing video games/watchin...

Anusha Chaudhary 1J

I didn't even realize daylight savings was tomorrow. Thanks for the reminder!

Anusha Chaudhary 1J

Okay, this may be really basic, but I absolutely LOVE WandaVision on Disney+. I highly recommend the show if you are into Marvel, or at least have seen Avengers: Endgame!

Anusha Chaudhary 1J

Do you guys think Dr. Lavelle will give us more time on the final, like he did for the second midterm? Having the extra time helped me sooo much, and I'm scared about how the time crunch will be, especially on the final.

Anusha Chaudhary 1J

I will be spending my spring break doing anything except staring at a computer doing school work. I just wish this break was longer :(.

Anusha Chaudhary 1J

Hey! This quarter has overall been one of the hardest quarters I've faced for a multitude of reasons. One thing I'm proud of is even getting through this class. I've been considering dropping the class almost the entire quarter, so making it to week 10 feels great! I know we're all gonna do amazing ...

Anusha Chaudhary 1J

Getting ready for Chem 14C with an O-chem joke!

Organic chemistry is difficult. Those who study it have alkynes of trouble.

Anusha Chaudhary 1J

Ximeng Guo 2K wrote:Is energy barrier equivalent to activation energy?

Yeah! In order for a reaction to get past the energy barrier, it requires activation energy either equal to or greater than the energy barrier. Hope this helps!

Anusha Chaudhary 1J

https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.pinterest.com%2Fpin%2F520095456947673171%2F&psig=AOvVaw1Bt9QMzJ0J5kSbZ_pNQGFj&ust=1614635944607000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCPi4w-HJje8CFQAAAAAdAAAAABAV The real answer to the question "Is the glass half ...

Anusha Chaudhary 1J

Also, you do not need to convert the H2 from a pressure into a concentration, you can find Q by using the given values for [H+] and PH2 Why is it that you don't have to convert the pressure into a concentration? Hi! A UA in one of the step-up sessions I went to said that the values of pressure and ...

Anusha Chaudhary 1J

Hi! I think everyone has already said this many times, but I definitely think UA sessions are very beneficial! I did really bad on the first midterm and was struggling a lot with my grade and this class, but I started going to UA sessions leading up to the second midterm. Though I still didn't do am...

Anusha Chaudhary 1J

As most people have already said lmao, I typically just use OIL RIG to help me determine what is being oxidized and what is being reduced. Then since the agent is the half-reaction that is making the opposite occur in the other reaction, I just look at them backward. So, in order for one part to be ...

Anusha Chaudhary 1J

OIL RIG and LEO GER have definitely both saved me more than once in chemistry. Definitely a very helpful acronym!

Anusha Chaudhary 1J

Here's a little electrochemistry joke to match our unit

I started working in an electrochemistry lab today, and the PI said that I have great potential.

Anusha Chaudhary 1J

Yeah! So as the person above stated, the Zn is more negative compared to the Cu, and therefore the cell will have electrons flowing from the Zn half to the Cu half. And since we know that the electrons flow from the anode to the cathode, we can deduce that Zn is the anode, and Cu is the cathode. One...

Anusha Chaudhary 1J

Hi! A general rule for finding which elements have an oxidation number of zero is if it is just a neutral element or a diatomic. So for example, Na(s), C(s), O2 (g), N2(g) all have an oxidation number of zero.

Anusha Chaudhary 1J

I completely agree with you guys^^ I psyched myself out so badly over this midterm, but in the end, I think the work I put in paid off. I think everyone was feeling a sense of imposter syndrome when dealing with this midterm, but we all just need to cool down and realize that we are here for a reaso...

Anusha Chaudhary 1J

I am definitely really stressed out for this midterm and will be spending the entire week studying for it. Regardless, I know everyone is going to amazing on it!! I see A's in everyone's future!

Anusha Chaudhary 1J

This was so sweet! Happy Valentines Day!! I know this week is going to be tough, but I know everyone is going to do amazing!!!!

Anusha Chaudhary 1J

A little Valentine's Day joke to lighten the mood!

A Hug without U is just toxic, Hg.

Anusha Chaudhary 1J

What are the best elements to work with?

Bromine, Uranium, Indium, Sulfur

BrUInS!!!

Anusha Chaudhary 1J

The internal energy of a system is at its minimum when it has reached equilibrium because the net change of energy moving in and out of the system is at 0. If U was a higher value, then the system would likely continue to release energy into the surrounding until delta U is 0.

Anusha Chaudhary 1J

In this question, we are asked to organize the entropy of the liquid forms of the samples given. If we assume that all three samples have roughly the same final entropy, we can then use the delta S values found. The values with the greatest change in delta S means that the initial entropy was lower,...

Anusha Chaudhary 1J

Hey! As Dr. Lavelle said in lecture, extensive properties are dependent on the amount on the amounts of substances present. I'm not completely sure if this is the right thinking behind it, but I think of it as if your heating up anything in general. The more of the thing your heating up, the longer/...

Anusha Chaudhary 1J

In terms of the equation for work (W = Fd) work is related to the force put into something, and the displacement of the thing that force was put into.

Anusha Chaudhary 1J

I know Dr. Lavelle mentioned that it is an isolated system. Since our general definition of the universe is that there is nothing outside of it, and there can't be an exchange of matter or energy, by that definition, we can say that it is a closed system.

Anusha Chaudhary 1J

What did the other elements say to hydrogen??

Why are you such a loner.

That is me. I am hydrogen.

Anusha Chaudhary 1J

For the second part of this question, use the mass of Carbon (169 g) and convert it to moles. Then, do the stoichiometry to find the total amount of energy released (using the idea that 4 moles of Carbon give 358.8 kJ, found through the equation). After that, take the 397 kJ of heat and once again u...

Anusha Chaudhary 1J

When the bonds in the reactants are overall stronger than the bonds in the products, it is an endothermic reaction. If the opposite is true (the bonds of the product are stronger than the reactants), the reaction is considered exothermic.

Anusha Chaudhary 1J

Hi! Does anyone know by when we usually get our midterm scores? Thanks!

Anusha Chaudhary 1J

Hii, When it was mentioned that our midterm would be during our lecture time, does it mean those who have a 10am lecture will take it at 10am, those who have a 1pm lecture will take it at 1pm, etc.? And does anyone know if there will be a lecture recording on Friday? Just want to plan ahead for the...

Anusha Chaudhary 1J

Hi! So, this is my first time taking Lavelle, and I wanted to ask how people think his exams are? Would you say they're typically easier or harder compared to the questions assigned in homework and in the textbook? Also, are the exams on a time crunch, meaning you're rushing to answer all the questi...

Anusha Chaudhary 1J

Everything seems to be good! For sig figs, I usually just hold onto as many values as possible and apply sig figs at the end. Hope this helps!

Anusha Chaudhary 1J

Are you made of Copper and Tellurium? Because you are Cu Te.

Sorry for the lame joke, but all the good ones Argon.

Anusha Chaudhary 1J

I started this question by writing out the equation and making the ICE box. Then, I plugged in the ICE box values into the equilibrium constant and solved. I tried to do the approximation method, but later found that the % ended up being more than 5%, so I had to solve the quadratic equation instead...

Anusha Chaudhary 1J

I keep doing the same process, but It says I'm wrong. My Kb = 3.648×10−5 and the pH = 9.305. From there I solved for pOH, and then got the concentration of OH- and the protonated amine as 2.02*10^-5. I then used this value and the Kb value to find the concentration of B, which I got to be 1.12*10^-5...

Anusha Chaudhary 1J

You are definitely made up of Beryllium, Gold, and Titanium because you are Be - Au - Ti - ful.

Anusha Chaudhary 1J

The key difference between Q and K is when the concentrations are calculated. K is found specifically when the reaction has reached equilibrium, whereas Q is found at any other time of the reaction. K and Q can be found at any temperature, however, K will differ when the reaction is at different tem...

Anusha Chaudhary 1J

If water is in the gas phase, then you should include it. But if it is a liquid or solid, then you leave it out.

Anusha Chaudhary 1J

The best way to understand it I guess is that we can approximate our x value, and ignore -x or +x for the reactants if K was less than 10^-4. Dr. Lavelle continues to back this with the idea that If the percent ionization/protonation is > 5%, then it is okay to use this approximation method.

Anusha Chaudhary 1J

When determining the X-value to use, you can automatically rule out the negative x values, as it is impossible to have a negative concentration. With this idea, we can also ignore any positive x-value that is greater than the initial molar concentrations, as it will give us a negative final concentr...

Anusha Chaudhary 1J

What is Batman's favorite element?

Sodium. Na Na Na Na Na Na Batman!

I'm sorry for the terrible joke.

Anusha Chaudhary 1J

What conditions need to remain the same in order to result in the same K values for the same reaction? I know temperature and (maybe) pressure are two conditions, but are there any others?

Anusha Chaudhary 1J

For the reaction P <-> R (reversible reaction), [P]/[R] will give us our K value. However, if we reverse what we define as our P and R, we would simply be flipping the equation, so the old R is on top and the old P is on the bottom. This will give us the inverse of our original K value, or simply pu...

Anusha Chaudhary 1J

Kc is an equilibrium constant for gases and is found through the use of partial pressure; Kp is an equilibrium constant which is found through the use of concentrations Someone correct me if I am wrong, but I believe it is switched! Kp is the equilibrium constant used for when all products and reac...

Anusha Chaudhary 1J

For the Ideal Gas Law, you would use Kelvin. If you get a question where it gives you temperature in Celsius, all you have to do is add 273.15 in order to convert it to Kelvin.

Search found 49 matches