CHEMISTRY COMMUNITY

Julianne_Zingmond_1E

I saw someone run away with my gold, so I shouted "Hey! AU!"

Julianne_Zingmond_1E

Delta G double dagger depends on the energy difference between the reactants and the transition states and regular delta G is the energy difference between the reactants and the products. I'm not aware of any equation that relates them

Hope this helps!

Julianne_Zingmond_1E

We do not need to know how to name organic molecules with more than one functional group. Here's another link that says the same thing near the bottom of the thread https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=89&t=13856&p=57839&hilit=functional+groups&sid=73b4fecbaca08840fde3...

Julianne_Zingmond_1E

If there is not an electrode given, pt electrodes are inert and work perfectly. I don't think there's a situation when either of them would be favored.

Hope this helps!

Julianne_Zingmond_1E

Did you know that you can cool yourself to -273˚C and still be 0k?

Julianne_Zingmond_1E

It depends on what is given on equation sheet and what the specific problem is asking for. If only one value is given, you can always convert from grams to moles or vice versa.

Hope this helps!

Julianne_Zingmond_1E

As far as I'm aware, all isothermal compressions are reversible, so you can use the reversible equation for all isothermal situations. I assume that Dr. Lavelle will explicitly state irreversible/reversible(isothermal) situations in the question.

Julianne_Zingmond_1E

From my understanding, molecules that are not diatomic will have more molar entropy. However, I'm not entirely clear on the explanation for this except for the fact that the mixed element molecule is technically more complicated.

Julianne_Zingmond_1E

The salt bridge's purpose is to prevent charge build up in the cathode. So, when ions build up in the cathode solution, the can be transferred over through the salt bridge to the anode to keep the redox reaction going. I hope this helps!

Julianne_Zingmond_1E

Got mole problems? Call Avogadro at 602-1023.

Julianne_Zingmond_1E

The specific heat capacity is measured in grams or kilograms, as opposed to the molar heat capacity which is measured in moles.

Julianne_Zingmond_1E

I actually think it could be either reason, but when I'm indicating that something is more acidic, in my opinion it is more logical to say that there is an excess of acid.

I hope this helps!

Julianne_Zingmond_1E

To add on, ionization refers generally to a change in number of electrons (aka a plus or minus charge on an element) and dissociation generally refers to the separation and ionization of a compound. I hope this helps!

Julianne_Zingmond_1E

I won't solve the problem for you, but the idea of this problem is that it gives the initial and final concentrations of BrCl, and therefore you can find the concentrations of the other products at equilibrium and find Kc.The material that will be covered on quiz 3 is only the basics of equilibrium....

Julianne_Zingmond_1E

Just to clarify further, you do not need to put unit n/V or M inside brackets when calculating K or Q for aqueous solutions because the brackets indicate that you are calculating K/Q based on molarity. For pressure on the other hand, when you put the values into the K/Q calculation, it would be wise...

Julianne_Zingmond_1E

Theoretically, if the gas has room to expand, the pressure would decrease. If the volume decreases and the gas is compressed, the pressure would increase. This is all based off of the ideal gas equation of PV=nRT, where P and V are inversely related.

Julianne_Zingmond_1E

To add on, even though we do consider the lone pairs as fields of electron density that affect the bond angles and shape of a molecule, we only consider the position of the bound electron pairs when we name the shape of a molecule.

Julianne_Zingmond_1E

Some of the preparation quizzes cover chapter 4 information, so we won't be tested on concepts we haven't discussed yet. Check out this link for more information https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=30&t=16106 I don't have any good memorization tips, but the website ptable.com hel...

Julianne_Zingmond_1E

As far as I know, Schrodinger's equation is only useful to us in the sense that the equation describes wave functions. Then, the wave function describes electrons in an atom and therefore orbitals the electrons are in. I don't believe we'll be doing any calculations with it.

Hope this helps!

Julianne_Zingmond_1E

When we determine values for ml , the values possible are integers within -l and +l. So for example, when l=2, the possible ml values will be -2(which is -l), -1, 0, +1, and +2(which is +l).

Hope this helps!

Julianne_Zingmond_1E

You're right about the units for joules, but the units for Planck's constant are J x s. So therefore you end up with (kg x m^s x s^-2 x s)/(kg x m x s^-1), and you end up with wavelength in meters.

Julianne_Zingmond_1E

I think that you can use the wavelength to determine the first n value. The wavelength indicates either the Balmer series or the Lyman series and each series has a specific n1 value. These values are in the text on pg 8 of the textbook(6th edition).

CHEMISTRY COMMUNITY

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Re: Post All Chemistry Jokes Here

Re: delta G double dagger

Re: more than one functional group [ENDORSED]

Re: Which electrode to use?

Re: Post All Chemistry Jokes Here

Re: Heat Capacity

Re: When to use reversible work equation?

Re: Entropy @ 0K

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Re: Post All Chemistry Jokes Here

Re: Heat Capacities [ENDORSED]

Re: 2015 Final Q7A

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Re: Difference between Pressure and compression/expansion?

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Re: Past Quizzes (2)

Re: Still confused on the definition of shrodinger's equation?

Re: Electron Configuration [ENDORSED]

Re: Simplifying De Broglie's wavelength equation [ENDORSED]

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