|
82
Determine the fraction of Am-241
remaining from an original sample
after
865.4 years.
| Answer--> 1/4
work
865.4y/432.7y=2 half lives
so 1-->1/2-->1/4 |
83 Compare the
penetrating power of the alpha
particles to the penetrating
power of the gamma radiation.
| Answer-->alpha is
less penetrating |
84 Complete the nuclear
equation for the alpha decay of
Pu-238 by writing a notation for
the missing nuclide.
Answer-->
|
238 |
Pu--> |
4 |
He
+ |
234 |
U |
|
94 |
2 |
92 |
|
85 Compare the energy released
by the radioactive decay of 1.0
kilogram of Pu-238 in this
nuclear power source to the
energy released by 1.0 kilogram
of chemical reactants in a
battery.
| Answer--> Radioactive
decay generates more (like
ridiculously more) energy
than a chemical reaction. |
|