CHEMISTRY COMMUNITY

jordanginyard_

How do determine the oxidizing reactant in a chemical reaction?

jordanginyard_

Are there any resources or lecture videos that could explain an isolated thermodynamic system?

jordanginyard_

What is the relationship between Kc and K ?

jordanginyard_

What does it mean when the volume is constant? What happens to the work?

jordanginyard_

WHat lecture video did he talk about the difference between adsorption and absorption?

jordanginyard_

Is there going to be a final exam study guide or any review sessions that would be held this week?

jordanginyard_

What is the Residual Entropy?

jordanginyard_

What increases the potential of the cell, is it just diluting the concentration of the anode.

jordanginyard_

What does the pH meter works and what is the importance of it?

jordanginyard_

What does Cp mean how significant is it for the final exam?

jordanginyard_

How do you balance redox reactions? Which lecture videos did Lavelle talk about it.

jordanginyard_

What are great resources to help with knowing about the half-reaction of a cell reaction?

jordanginyard_

When would E naught be almost equal to zero?

jordanginyard_

Is there a difference between activation energy and the free energy of activation? Isn’t it the same thing.

jordanginyard_

I am having a hard time trying to solve this problem? The presence of a catalyst provides a reaction pathway in which the activation energy of a reaction is reduced by 37.00 kJ⋅mol−1. Uncatalyzed: A⟶B Ea=123.00 kJ⋅mol−1. Catalyzed: A⟶B Ea=86.00 kJ⋅mol−1. Determine the factor by which the catalyzed r...

jordanginyard_

What is the importance of chemical kinetics?

jordanginyard_

Can catalysts appear in the products as well of a reaction or is always the reactants part ?

jordanginyard_

What are the equations that correlate with the first order, second-order, and third-order?

jordanginyard_

How does the molecularity relate to the rate law?

jordanginyard_

How does Gibbs free energy relate to Thermodynamics ?

jordanginyard_

How can you tell if a problem is dealing with either isothermal, reversible, or irreversible?

jordanginyard_

Within the adiabatic system, is there no heat transfer between the system and the surroundings ?

jordanginyard_

What is the relationship between Boltzmann's constant and the gas constant?

jordanginyard_

I know that if the work is done by the system then the system would most likely lose its energy and then it would become negative, is there anything else to know?

jordanginyard_

What is the DNA structural transition?

jordanginyard_

I know Vant Hoff's equation is used to calculate K at different temperatures, what else do we need to know?

jordanginyard_

What is Entropy and how important is it to know for the next midterm ?

jordanginyard_

does anyone know how to do #10 for the sapling homework where it talks about the ice cube mass? I don't know what equation to use.

jordanginyard_

What is the relationship between Gibbs Free Energy and work? How can you tell when we have to solve a problem that deals with Gibbs free energy?

jordanginyard_

What does it mean if an equation is spontaneous? How can you tell?

jordanginyard_

Which Lecture video if anyone knows, does the professor talk about CP and CV?

jordanginyard_

How do we solve enthalpy? What is the equation to use, is it the q= MC (temp final minus initial temperature) equation ?

jordanginyard_

When will get our grade back for the Midterm we recently took ?

jordanginyard_

How do you solve for the standard enthalpy of formation of a molecule using Hess's law ?

jordanginyard_

What is the relationship between pKa and -log Ka?

jordanginyard_

Is salt acidic or basic?

jordanginyard_

What is the relationship between the chemical equilibrium and then the acid equilibrium?

jordanginyard_

How do we determine the final temperature of the system at equilibrium?

jordanginyard_

Can someone explain the signifance when it talks about the phase change ? Like what is the relationship when it goes from liquid to gas, did we heat the liquid or cool it ?

jordanginyard_

What is Conjugate Seesaw and how important for this class and for the exams?

jordanginyard_

Are K and Q the same? What is the relationship between the two ?

jordanginyard_

For Chem 14B, is it going to be multiple choice? Also, will be a review session for the midterm that's on week 4?

jordanginyard_

In any situation, where P doubles (V half), what happens to the concentrations?

jordanginyard_

In any situation, where P doubles (V half), what happens to the concentrations?

jordanginyard_

What are the difference and how do we distinguish the different types of acid and base, weaker and stronger?

jordanginyard_

When do we have to use the autoprotolysis equation ?

jordanginyard_

Is there a simpler way to explain Kw and how the 10^14 comes into play?

jordanginyard_

Why for the molecule that contains gases, we have to P before it?

jordanginyard_

When is it necessary to do the chart that contains things such as Initial molar concentration, change in molar concentration, equilibrium molar concentration? ALso, how do you do that?

jordanginyard_

If one starts with a higher pressure of reactant, the equilibrium constant will be larger? I know the temperature has something to do with it.

jordanginyard_

Can someone define Titrations and the calculations it comes with it.

jordanginyard_

Are there any helpful resources to know to fully understand the coordination numbers and ligands?

jordanginyard_

What is the relationship between conjugate the strengths of acids?

jordanginyard_

What is the reason behind acid rain? what is the importance?

jordanginyard_

Which concepts and materials should be the focus point on the final. should it be more on the new materials we just learned?

jordanginyard_

What formula do we use when working on the Henderson-Hasselbalch equation?

jordanginyard_

What is the difference between the terms stereoisomers and structural isomers and how important is it for the final exam?

jordanginyard_

What is Professor Lavelle's email or who can I talk to because I scored a 100% on the homework for Week 10 and it's saying 6.5/7.

jordanginyard_

Does the formula change when the temperature change when solving [h+], [OH-], pH, pOH.

jordanginyard_

What else do we need to know about the sigma and pi bonds other than the fact that a single bond has one sigma bond,a double bond has one pi bond & one sigma bond, and so forth. What else.

jordanginyard_

When looking at the hybridization of the central atom, how does the polar/ non-polar related to it?

jordanginyard_

What is Professor Lavelle's email or who do I talk to because I scored a 100% on the homework for Week 10 and it's saying 6.5/7. Who can fix this issue ?

jordanginyard_

Did the professor ever state how many questions will be on Midterm 2?

jordanginyard_

What are the trends when it comes to ionization energy?

jordanginyard_

Can someone explain in a simpler way what Shrodinger Equation?

jordanginyard_

What is the difference between Inorganic and Organic Bases? Are there any problems in the textbooks that we can practice on ?

jordanginyard_

How many chemistry community posts do we need to have as of November 22nd?

jordanginyard_

If it is in the same row and right next to each other, how do we determine which one is bigger?

jordanginyard_

Are pi bonds shown in all orbitals or just p orbitals, if so why?

jordanginyard_

Did he send an email about MIdterm 2 and how the zoom and respondus lockdown browser is going to be or will it be the same as before?

jordanginyard_

What is the importance of dipole moments? Are there rules that we need to know? Recommended videos.

jordanginyard_

I don't know if I'm right but is the formula to find a lone pair is # of valence electrons - 8n divided by 2 ?

jordanginyard_

For solving the Lewis Base structures, does it have to be eight valence electrons on every element such as Nitrogen and Oxygen, or does it depend on the element because I dont think hydrogen has 8 eight valence electrons?

jordanginyard_

Do we need to know the difference between anions and cations? How important it is to know this. ODes anyone remembers which lecture videos the professor explains these concepts.

jordanginyard_

Is there any videos anyone recommends watching to help solve problems that deal with Sigma & Pi Bonds that relates to what will be on the midterm and final.

jordanginyard_

A Lewis acid accepts a pair of electrons to form a covalent bond, while a Lewis base donates a pair of electrons to form a covalent bond.

jordanginyard_

How do you know when you have to use the formal change and what type of problems appear when using the oxidation numbers. Is there a simple way of identifying this?

jordanginyard_

Why do double bonds appear to be shorter than a single bond?

jordanginyard_

Who can we talk to about the sapling homework? It's asking to sign through the management system and I usually put the email that I've been using. I'm following the paper and everything.

jordanginyard_

How many posts are we supposed to have as of now, November 1st?

jordanginyard_

Is it true that once the principle quantum number increases, the number of orbitals increases as well?

jordanginyard_

What are nodal planes and how do they relate to quantum numbers. Are they any videos I can watch that relates to what the teachers want us to understand from this topic.

jordanginyard_

What do we need to know about the s-, p-, d-, f- orbitals and the importance. What do the 2s and 3s stand for?

jordanginyard_

When do we know we have to use the Heisenberg equation? I get confused when we use it, is it when it asking for the translation, for example, n=5 to n=2.

jordanginyard_

How do we know if the comments and posts we make are valid and worth the posts that afe supposed to given each other.

jordanginyard_

yes, C will always represent the speed of the light (3x10^8).

jordanginyard_

Okay thank you so much.

jordanginyard_

Is the orbitals materials going to to be on the midterms ?

jordanginyard_

How is this midterm going to go like with attain the actual test and then the TA proctoring us and having a webcam? I don't understand.

jordanginyard_

Where does it say we need a webcam for the midterm and what can we used if we didn't buy a webcam?

jordanginyard_

When solving and trying to find the energy and the wavelength is involved do we use this equation always, E=hc/v.

jordanginyard_

What formula is c = 3.00 x 10^8 m.s^-1 for. I remember seeing this in the lecture but I was confused about why we use this equation or do we even use it at all.

jordanginyard_

Besides the textbook problems and the sapling problems, where can we find more limiting reactant calculations problems for practice?

jordanginyard_

What is a good calculator to use for chemistry? what's a good periodic table because sometimes I get the problems wrong with the numbers that are used on the periodic table?

jordanginyard_

I know the Black Body Radiation absorbs the frequencies of light, but how much more do we need to know about that for the midterms and the final ?

jordanginyard_

Can someone explain the photoelectric experiment? How important is the ultraviolet in this topic?

jordanginyard_

On the lecture video on the chem 14A website, it said that the molecular formula must be the same for empirical. However, I don't know if that is true because isn't the empirical formula the relative and like the molecular formula is the multiple of empirical.

jordanginyard_

When balancing a chemical equation... say if one of the problems says like CO4, do I say C=1 and O=4 or do I say C=4 and O=4 ?

jordanginyard_

As the volume goes up, does the molarity and the number of moles go down, or does the both remain the same?

jordanginyard_

When we have an answer to any problem and we have to round. What should we round up to? Should I have round up to the tenths or hundredths?

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