Calculate the energy difference for a transition in the Paschen
series for a transition from the higher energy shell n=6. Express
your answer to four significant figures and include the appropriate
units
compute the following:
(a) Calculate the wavelengths for the Paschen series for
Hydrogen
(b) If the average speed of a Hydrogen electron is 4.0*10^6 m/s
with a 0.95% uncertainty. What is the uncertainty of its position?
( Hint: the mass of an electron is 9.109*10^-31)
In the Bohr model, the Paschen series of spectral lines is
caused by radiation absorbed or emitted as an electron transitions
between the 2nd excited state and any higher excited state (3rd
excited state and higher) of the hydrogen atom. The Paschen series
spectral lines all involve infrared photons.
a) Using the Bohr model, calculate the energy of the electron
when it is in the 2nd excited state, in units of electron-Volts
(eV).
b) Calculate the energy of the electron...
Calculate the photon energy and wavelength for the n = 4 to n =
2 transition and n = 4 to n = 3 transition for the hydrogen atom, H
(Z = 1). Do not include uncertainty.
E ( 5--> 3) =
E ( 5 --> 2 ) =
λ ( 5--> 3 ) =
λ ( 5 --> 2) =
Using a molecular mechanics program, calculate the energy
difference or the difference in heats of formation between Z- and
E-stilbene. How do your computed values compare to the difference
in heats of hydrogenation of the two isomers.
Consider the transition from energy levels n = 1 to n = 3
a) what is the frequency and
wavelength associated with this transition?
b) in what spectral region does this
transition occur?
c) is energy absorbed?
9) What type of electron orbital (i.e.
s, p, d, or f) is designated by
a) n = 2, l = 1,
ml = -1?
b) n = 1, l = 0,
ml = 0?
c) n = 5, l =...
(1)
Measures to make a transition from renewable energy sources is a
matter of equality at the national and international level. Explain
that statement and give examples with respect.
Recall that an emission transition involves a jump from an upper
energy level down to a lower energy level. With this in mind, what
quantum number do lines of the Lyman series have in common? The
Balmer series? The Paschen series? How can we designate a set of
lines as a “series”?
define the glass transition temperature of a polymer , explain
the difference in the glass transition temperature values between
polystyrene (Tg = 100degrees celcius) and polyethylene (Tg = -20
degrees celcius)