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Kinetic theory of gases
Average number of molecule's free path
mean free path of molecule
=
m
x
Å
nm
μm
mm
cm
dm
m
km
n mile
in
ft
yd
Boltzmann constant
k =
1.381E-23
J/K
gas temperature
T =
K
x
μK
mK
K
kK
MK
molecule diameter
d =
m
x
Å
nm
μm
mm
cm
dm
m
km
n mile
in
ft
yd
gas pressure
p =
Pa
x
μPa
mPa
Pa
kPa
MPa
GPa
bar
kgf/cm
2
mm H
2
O
mm Hg
1. Define values of all variables, besides sought quantity
2. Change units if necessary
3. Click "Calculate"