For an atom of mercury, an electron in the 1 s shell has a velocity of about 58 % ( 0.58 ) of the speed of light . At such speeds, relativistic corrections to the behavior of the electron are necessary. If the mass of the electron at such speeds is 1.23 m e ( where m e is the rest mass of the electron) and the uncertainty in velocity is 10 , 000 m / s , what is the uncertainty in position of this electron?
For an atom of mercury, an electron in the 1 s shell has a velocity of about 58 % ( 0.58 ) of the speed of light . At such speeds, relativistic corrections to the behavior of the electron are necessary. If the mass of the electron at such speeds is 1.23 m e ( where m e is the rest mass of the electron) and the uncertainty in velocity is 10 , 000 m / s , what is the uncertainty in position of this electron?
Solution Summary: The author explains the uncertainty principle, which states that the position and velocity of an electron cannot be accurately measured at the same time.
For an atom of mercury, an electron in the
1
s
shell has a velocity of about
58
%
(
0.58
)
of the speed of light. At such speeds, relativistic corrections to the behavior of the electron are necessary. If the mass of the electron at such speeds is
1.23
m
e
( where
m
e
is the rest mass of the electron) and the uncertainty in velocity is
10
,
000
m
/
s
, what is the uncertainty in position of this electron?
Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.
The table includes macrostates characterized by 4 energy levels (&) that are
equally spaced but with different degrees of occupation.
a) Calculate the energy of all the macrostates (in joules). See if they all have
the same energy and number of particles.
b) Calculate the macrostate that is most likely to exist. For this macrostate,
show that the population of the levels is consistent with the Boltzmann
distribution.
macrostate 1 macrostate 2 macrostate 3
ε/k (K) Populations
Populations
Populations
300
5
3
4
200
7
9
8
100
15
17
16
0
33
31
32
DATO: k = 1,38×10-23 J K-1
Don't used Ai solution
In an experiment, the viscosity of water was measured at different
temperatures and the table was constructed from the data obtained.
a) Calculate the activation energy of viscous flow (kJ/mol).
b) Calculate the viscosity at 30°C.
T/°C
0
20
40
60
80
η/cpoise 1,972 1,005 0,656 0,469 0,356
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The Bohr Model of the atom and Atomic Emission Spectra: Atomic Structure tutorial | Crash Chemistry; Author: Crash Chemistry Academy;https://www.youtube.com/watch?v=apuWi_Fbtys;License: Standard YouTube License, CC-BY