Some Gen Chem Questions

[smthngintheway]

Hi everyone. I have a few questions I'm not so sure on and I was wondering if you guys could answer them.

Do we or do we not need to know:
Plank's Constant, h, (6.626 x 10^-34 JxS or, the other one, 4.15 x 10^-15 ev-s)
Rydberg's Constant, RH, (2.18 x 10^-18 J/e-)
C^2 (speed of lights squared)= 932 MeV/amu (This is for figuring out Binding E?)
Thermal Expansion, Volume expansion
Things like what work or internal E is equal to in Isobaric, Isovulumetric, adiabatic or isothermal conditions? (Like W=PdeltaV at Isobaric. W=Q in Isothermal etc.)
En (Energy at N primary level)=-13.6ev/n^2
Entropy, S=q/T
E=hf or E=hc/lambda or E=-RH/n^2

Also, another thing I'm worried about is getting confused when you plug in moles or molarity. Like, for instance, Ka (Acid dissociation constant)=[H+][A-]/[HA].... That's molarity right? But then in Kc (equilibrium constant), for let's say aA + bB --->cC + dD, Kc= ([C]^c x [D]^d) / ([A]^a x ^b) That's in moles?

I'm taking my DATs this Wednesday and it's so overwhelming. I get frustrated way too easily whenever I don't get an answer right and even looking at something I don't understand gets my stomach all queasy. How do I survive this!?

Mad thanks in advance.

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[SN1]

Also, another thing I'm worried about is getting confused when you plug in moles or molarity. Like, for instance, Ka (Acid dissociation constant)=[H+][A-]/[HA].... That's molarity right? But then in Kc (equilibrium constant), for let's say aA + bB --->cC + dD, Kc= ([C]^c x [D]^d) / ([A]^a x ^b) That's in moles?


Mad thanks in advance.[/QUOTE]

You do everything in Molarity. [] indicates molar concentration measured in molarity.