CHEMISTRY COMMUNITY

megangeorge-1K

What is the difference between a homogeneous and heterogenous catalyst that has on the reaction?

megangeorge-1K

How does a catlyst effect the reaction curve? I

megangeorge-1K

What do we use the Arrhenius equation for?

megangeorge-1K

what is the units of k for a second order reaction

megangeorge-1K

what is the units of k for a first order reaction

megangeorge-1K

when writing the overall rate of the reaction we don't write in zero-order reactions right?

megangeorge-1K

Why does the average rate of consumption formula have a negative and the average rate of formation does not?

megangeorge-1K

What is the purpose of the Nernst Equation?

megangeorge-1K

So when the cell potential has a negative value then does that mean the reaction is not spontaneous?

megangeorge-1K

Thank you that was very helpful! Which instances would you apply Pt(s) on both sides of the diagram?

megangeorge-1K

in the equation
deltaG= -nFE
what does n stand for? is it number of moles?

megangeorge-1K

Why do standard cell potentials have to be positive?

megangeorge-1K

I am sure this question has been asked a million times already I am just still very confused on writing the cell diagram for a redox reaction.
When do we add Pt(s) and what does that mean?

megangeorge-1K

these were very helpful thank you so much

megangeorge-1K

what is the difference between a unique rate vs. an instantaneous rate?

megangeorge-1K

for outline 4 I believe it will be any material we learned during week 6

megangeorge-1K

I have a question about Question 3D
What is Ka2?

megangeorge-1K

Is the equilibrium constant, K unitless?

megangeorge-1K

why is Internal energy a state function if it is comprised of heat and work which are both not state functions?

megangeorge-1K

Is work a state function?

megangeorge-1K

If we are calculating work on a system and W is a positive number, does that mean work is done by the system or work is done on the system? What is the difference between these two?

megangeorge-1K

thank you so much

megangeorge-1K

does the midterm cover outlines 1-4?

megangeorge-1K

does anyone have the lecture notes for (1/28)?

megangeorge-1K

This is a side note what is a conjugate base/acid?

megangeorge-1K

when Q<K, will more products form because the forward reaction is favored?

megangeorge-1K

For this week should we be submitting homework from chapter 12?

megangeorge-1K

While I was taking the module one question asked about when a reaction "lies to the right" and a follow up question asked when the "equilibrium shifted to the right" would both of these wordings produce the same K-value? I feel like I worded this question very weirdly sorry.

megangeorge-1K

What does it mean if the "equilibrium sits to the lift" or the "equilibrium sits to the right"?

megangeorge-1K

why is K= 1 rare?

megangeorge-1K

alright thank you!

megangeorge-1K

In 4.7 the shape of SOCl2 is trigonal pyramidal
in 4.9 the shape of ICl3 is T-shaped.
How do we determine the difference between the two shapes?

megangeorge-1K

will we be provided the equation for calculating pH on the final?

megangeorge-1K

In lecture we learned that strong acids are almost completely ionized in a solution. What does that mean?

megangeorge-1K

I don't believe that you can determine which bond is actually the sigma or the pi bond. I think we just have to focus on what determines making a sigma bond or a pi bond

megangeorge-1K

what is the difference between something being ionic or dipole?

megangeorge-1K

oh ok thank you!

megangeorge-1K

I'm drawing a blank, when drawing a lewis structure what determines which element goes in the middle?

megangeorge-1K

the reponses are really helpful regarding dipole movement. So for clarification dipole movement results in the molecule being polar?

megangeorge-1K

thank you so much!
Very helpful!

megangeorge-1K

Hello
I was not able to attend lecture on Wednesday, 6/6. Does anyone possibly have the notes from that lecture?

Thank you!

megangeorge-1K

hello the question asks to give the chemical formula for the following compounds and I understand how to do parts A and B but part C has be confused. The compound is manganese(IV) oxide. The answer is MnO2 but I'm not entirely sure how to get it. I think its the element Mn that is confusing me If an...

megangeorge-1K

what are the ionization exceptions again? and for clarification there are exceptions because these ions are more stable in the exceptions form?

megangeorge-1K

for section this week are able to turn in problems from chapter 2 or chapter 3?

megangeorge-1K

This clears up a lot! Thank you! Another quick question though for clarification. I know that paired electrons have opposite spins but why do they have opposite spins? Is it due to their charge or is it because no two electrons can have the same four quantum numbers or because of something else? I'...

megangeorge-1K

hello,
In lecture Dr. Lavelle explained that the p-, d-, and f- orbitals have a nodal plane while the s- orbital does not... how do these orbitals have nodal planes?
thank you

megangeorge-1K

so the 3d orbital is lower in energy than the 4s orbital?

megangeorge-1K

alright thank you!

megangeorge-1K

in class we had an example of writing the electron configuration of Calcium and we were able to write it as: [Ar]4s^2... why are we able to use Argon to write the electron configuration?

megangeorge-1K

what problem is that in the textbook?

megangeorge-1K

hello,
what problems are we able to turn in for homework this week?

megangeorge-1K

thank you so much!

megangeorge-1K

Does anyone know if we will be tested on amplitude and intensity on Test 2? Its in section 1.2

thank you :)

megangeorge-1K

thank you!

megangeorge-1K

what are the proper units for frequency and wavelength?

Thank You!

megangeorge-1K

in lecture today, Dr. Lavelle mentioned something about having to divide by avogadro's number when regarding the energy it takes to remove an electron. I'm not quite sure why it is we have to divide by avogradro's number or when we would have to. I'm also not sure if this question makes any sense lo...

megangeorge-1K

that makes sense now thank you for explaining!

megangeorge-1K

I saw a previous post regarding E. 15 that was very helpful but I am still wondering how do we know we are supposed the 34.02g in order to get the 40.08g which is the molar mass of Ca?
Thank you!

megangeorge-1K

hello everyone! I was hoping that someone could possibly explain to me question G. 9 A chemist studying the properties of photographic emulsions needed to prepare 500.0 mL of 0179 m AgNO3 (aq). What mass of silver nitrate must be placed into a 500.0 mL volumetric flask, dissolved, and diluted to the...

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