CHEMISTRY COMMUNITY

Ruth Glauber 1C

I don't think so!

Ruth Glauber 1C

Could someone walk through an example?

Ruth Glauber 1C

I think the question would state it.

Ruth Glauber 1C

^^ agreed

Ruth Glauber 1C

It's the Boltzmann's constant! 1.380649×10−23 J/K

Ruth Glauber 1C

I think it's on the equation sheet?

Ruth Glauber 1C

Does anyone have an example they can walk through?

Ruth Glauber 1C

Anybody have an example from the textbook?

Ruth Glauber 1C

Does this apply to W20?

Ruth Glauber 1C

Anyone know if this is still relevant?

Ruth Glauber 1C

I think it will probably be the context of a longer problem.

Ruth Glauber 1C

Agreed. ^^

Ruth Glauber 1C

Does anyone have an example they could use to illustrate this?

Ruth Glauber 1C

I agree, I think it was in a few hw examples.

Ruth Glauber 1C

Is this the only example where this would be true?

Ruth Glauber 1C

Is there an example in the textbook that anyone could explain?

Ruth Glauber 1C

Are there any other ways this could manifest on a future exam?

Ruth Glauber 1C

Is there a problem in the textbook that illustrates this concept?

Ruth Glauber 1C

I think the higher the density, the greater the capacity.

Ruth Glauber 1C

It's far more readily available!

Ruth Glauber 1C

Enthalpy of formation of O2 is 0 at its most stable form.

Ruth Glauber 1C

There is a grid on one of the pages in the chapter about Delta G that could be helpful to explain this!

Ruth Glauber 1C

The degree sign indicates standard form.

Ruth Glauber 1C

Only if the system is at equilibrium can replace Q with K in this equation.

Ruth Glauber 1C

Gibbs free energy is the energy that is available to do work. Delta G indicates if it is spontaneous!

Ruth Glauber 1C

Does anyone have an example from the textbook?

Ruth Glauber 1C

Molar entropy = entropy content of one mole of substance

Ruth Glauber 1C

I think that you use it to find changes in entropy within systems and in relation to their surroundings.

Ruth Glauber 1C

Can someone walk through an example?

Ruth Glauber 1C

^^^ Does anyone have an example that they could walk through?

Ruth Glauber 1C

I don't think there's one yet!

Ruth Glauber 1C

Does anyone know the context in which we would have to be able to solve this?

Ruth Glauber 1C

Because it gives off heat.

Ruth Glauber 1C

I think he was calling specific attention to the fact that specific heat capacity and specific heat are the same thing?

Ruth Glauber 1C

Does anyone have a direct example from the textbook to illustrate this?

Ruth Glauber 1C

I think a closed system can only be changed by a change to pressure or volume.

Ruth Glauber 1C

I think it was on the equation sheet? To convert from Celsius to Kelvin, just add 273.

Ruth Glauber 1C

I think that temperature is the only relevant factor that changes K.

Ruth Glauber 1C

I use this to remember: if temperature increases, exothermic reactions shift to the left and everything is "the opposite".

Ruth Glauber 1C

Does anyone have an example they could walk me through?

Ruth Glauber 1C

They're considered spectator ions and insignificant!

Ruth Glauber 1C

It applies anytime a reaction at equilibrium is disturbed.

Ruth Glauber 1C

Does anyone have an example they can walk through?

Ruth Glauber 1C

Check if the products have more energy than the reactants to decide if its exothermic!

Ruth Glauber 1C

I think based on whether its a forward or backward reaction?

Ruth Glauber 1C

Are there any conditions where you can't use it? Like that could be a trick question?

Ruth Glauber 1C

Does anyone have an example they could walk through?

Ruth Glauber 1C

It's false because when you increase the pressure of the reactants, the pressure of the products will also increase.

Ruth Glauber 1C

It's just the way for you to determine whether the reaction is at equilibrium.

Ruth Glauber 1C

Yes I think so!

Ruth Glauber 1C

Yes, it can be changed by changing the temperature or adding an inert gas (without changing the volume).

Ruth Glauber 1C

I think that it's only purpose is to narrow in on the states of the reactants and products in the equilibrium equation, so you know what to include in a K or Q calculation for an equation.

Ruth Glauber 1C

I also had this question! ^^

Ruth Glauber 1C

I'm also very unclear on this ^^ Can someone please explain?

Ruth Glauber 1C

What about anions and cations outside of the coordination sphere? How do you use prefixes with them?

Ruth Glauber 1C

^^ I also had this question. Does anyone have any other examples for exceptions?

Ruth Glauber 1C

I think you use it when the ligand already has a bi or prefix.

Ruth Glauber 1C

I am also confused on how (en) influences the naming. Can anyone give an example?

Ruth Glauber 1C

Can anyone walk me through an example?

Ruth Glauber 1C

I don't think so, no.

Ruth Glauber 1C

^^ What is a step by step method?

Ruth Glauber 1C

Yes, and I think page 119 had an example on this?

Ruth Glauber 1C

I think it's best to know how they relate to hybridization, but really only sigma and pi bonds I think.

Ruth Glauber 1C

Yes, I think lone pairs act as bonding in hybridization.

Ruth Glauber 1C

I think pi bonds? Does anyone else have an explanation as to why?

Ruth Glauber 1C

Every molecule experiences these forces.

Ruth Glauber 1C

I think that London Dispersion Forces are a specific type of vander waals.

Ruth Glauber 1C

Does anyone have another example to illustrate these explanations?

Ruth Glauber 1C

Does anyone know where in the textbook I could find a diagram for this?

Ruth Glauber 1C

I think this is roughly explained by the concept of resonance structures.

Ruth Glauber 1C

Try drawing out a lewis structure and comparing formal charges for each atom.

Ruth Glauber 1C

I think that this is called an expanded octet.

Ruth Glauber 1C

I think that a de Broglie wavelength less than 10-15m does not have detectable wave-like properties.

Ruth Glauber 1C

Check to see if it's an ion!

Ruth Glauber 1C

I think that you write the noble gas and then the other notation unless otherwise stated by the question.

Ruth Glauber 1C

I would look at the bonds in the molecules and their respective strengths.

Ruth Glauber 1C

I think you should only have to make the positive or negative notation on the atom itself (eg. Na+).

Ruth Glauber 1C

So do we have to have exact units for each step of the problem, or just correct units for the answer?

Ruth Glauber 1C

I would memorize them,just to be safe.

Ruth Glauber 1C

I think they are Cu and Cr!

Ruth Glauber 1C

Shell is the quantum number n. Subshell is the shape (s, p, d, f) and quantum number l. Orbital is the orientation of the subshell!

Ruth Glauber 1C

I think it involves the electron's intrinsic angular momentum.

Ruth Glauber 1C

I think that it depends on the conditions at which the most stability is achieved.

Ruth Glauber 1C

Can anyone summarize this for me?

Ruth Glauber 1C

Can someone repeat how the tests are curved?

Ruth Glauber 1C

I think it's useful to know how to derive it!

Ruth Glauber 1C

It's to find wavelength, right?

Ruth Glauber 1C

You need to make sure they have a variable in common!

Ruth Glauber 1C

I think you need to calculate 1% of the hydrogen radius (0.05 nm) in meters for the uncertainty.

Ruth Glauber 1C

No, light cannot be used.

Ruth Glauber 1C

Why is there a difference in calling it the uncertainty vs undeterminability principle?

Ruth Glauber 1C

I believe it is from the review section and the quantum section.

Ruth Glauber 1C

I believe using 700 to 400 is acceptable (and easier to remember).

Ruth Glauber 1C

Where does the name Rydberg come from?

Ruth Glauber 1C

I believe partial credit is awarded for steps within the overall problem.

Ruth Glauber 1C

Theoretical yield is the amount you SHOULD be able to create in a perfect laboratory environment, however the actual yield is what you end up getting under realistic lab context. The percentage yield is the ratio between these two.

Ruth Glauber 1C

You should always multiply to eliminate fractions across the entire equation, to ensure it's balanced on both sides.

Ruth Glauber 1C

I would use trial and error and try to estimate the lowest multiple of the numbers you have already and go from there.

Ruth Glauber 1C

I believe you tend to put Carbon, Hydrogen and Oxygen first, and go off of the others in alphabetical order?

Ruth Glauber 1C

I think it is best to round to the number of significant figures stated in the question (i.e. the number of sig figs of the data the question gives you).

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