The activation energy for a reaction is changed from 184 kJ/mol
to 59.3 kJ/mol at 600. K by the introduction of a catalyst. If the
uncatalyzed reaction takes about 2653 years to occur, about how
long will the catalyzed reaction take? Assume the frequency factor
A is constant and assume the initial concentrations are
the same
The activation energy for a particular reaction is 84 kJ/mol. By
what factor will the rate constant increase when the temperature is
increased from 50 oC to 72 oC?
The ionization energy of a certain element is 352 kJ/mol.
(Ionization energy is the minimum energy required to remove an
electron from an atom. It is usually expressed in units of kJ/mol;
that is, it is the energy in kilojoules required to remove one mole
of electrons from one mole of atoms.) However, when the atoms of
this element are in the first excited state, the ionization energy
is only 166 kJ/mol. Based on this information, calculate the
wavelength of...
Calculate the total binding energy in kJ per mole nuclide and in
kJ/mol nucleons for the following nuclides, using the data given
below.
Nuclide
Total binding energy
kJ/mol nuclide
kJ/mol nucleons
(a)
12 6 C
(b)
17 8 O
(c)
234 90 Th
Particle or atom
Mass (u)
proton
1.00728
neutron
1.00866
electron
0.00055
12 6 C
12.00000
17 8 O
16.99913
234 90 Th
234.04360
1 u = 1.66054×10-27
kg
A certain reaction has an activation energy of 39.79 kJ/mol. At
what Kelvin temperature will the reaction proceed 6.50 times faster
than it did at 339 K?
What is the energy, in kJ/mole, associated with photons having
the following wavelength
A. 280nm
B. 400nm
C. 750nm
D. 4000nm
What is the significane of each of these wavelengths
ionization energy is usually expressed in units of kj/ mole 1000
j = 1 Kj
use the bohr equation to calculate the ionization energy of
hydrogen in K j/ mole ? show your work