所屬科目：研究所、轉學考(插大)◆綜合化學
(e)
6.What is the maximum number of electrons that can be emitted if a potassium surface of work function 3.20 eV absorbs of radiation at a wavelength of 335 nm? What is the kinetic energy and velocity of the electrons emitted?
8.A standard rotary pump is capable of producing a vacuum on the order of Torr. What is the single-particle collisional frequency and mean free path for N 2 at this pressure and 300 K?
2. Calculate the pH of a buffer solution that is 0.050 M in benzoic acid (HC7H5O2) and 0.150 M in sodium benzoate (NaC7H5O2). For benzoic acid, .
a.
b.
c..
d.
e.
f.
c.
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of radiation at a wavelength of 335 nm? What is the kinetic energy and velocity
of the electrons emitted? 
is an eigenfunction of 
； and
Torr. What is the
single-particle collisional frequency and mean free path for N 2 at this pressure and 300 K?
.
