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1
Chemistry 312 Spring 2008 Equation Guide
Constants
h = 6.626 x 10
-34
J s h = h/2? N
A
= 6.022 x 10
23
mol
-1
m(electron) = 9.1094 x 10
-31
kg m(proton) = 1.6726 x 10
-27
kg
m(neutron) = 1.6749 x 10
-27
kg c (vacuum) = 2.9979 x10
8
ms
-1
Charge of an electron, e = 1.602 x 10
-19
C
k = 1.381 x 10
-23
J K
-1
R = 8.314 J K
-1
mol
-1
= 0.08206 L atm K
-1
mol
-1
Pressure conversions: 1 atm = 1.01325 bar = 1.01325 x 10
5
Pa = 760 mm Hg = 760 torr
Particle in a box E =
h
2
8m
n
x
2
a
2
+
n
y
2
b
2
+
z
2
n
c
2
!
"
#
$
%
&
n
x
, n
y
, n
z
= 1,2,3,...
Rigid Rotor
E
J
=
h
2
2I
J(+1)I=µr
e
2
g
J
=2J+1µ=
m
12
1
+
2
J = 0,1,2,...
Harmonic Oscillator E
v
= h?
vib
(v+1/2) v = 0,1,2,...
?
vib
= 1/2? (k/µ)
1/2
Quantum Theory (Electronic levels and light) E
photon
= h? = hc/?
Gas Equations PV = nRT (id...

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