SOLUTION: A 200 g sample of radioactive polonium-210 has half-life of 138 days.
a) Determine the mass that remains after 5 years.
b)How long does it take for this 200 g sample to decay
Algebra.Com
Question 938336: A 200 g sample of radioactive polonium-210 has half-life of 138 days.
a) Determine the mass that remains after 5 years.
b)How long does it take for this 200 g sample to decay to 25 g?
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
t, time in days
p, amount after time t
k, decay constant
I, initial amount
-----You can use this form of the equation both to find k using the half-life information, and then to find t using the part (b) material quantities data.
, using time units of DAYS.
Be careful in part (a). Convert 5 years into how many days, and use the time in number of days, because that is what k was based on.
in days.
(a)
RELATED QUESTIONS
A radioactive form of uranium has a half life of 2.5x 10^5 years. a) Find the remaining... (answered by Theo,ikleyn)
The half-life of an isotope is the time for its mass to decay by ½. For example,... (answered by josgarithmetic)
At the end of 20 minutes, 1/32 of a sample of polonium remains. Determine the half-life... (answered by ikleyn)
A sample of 600 g of radioactive lead-210 decays to polonium-210 according to the... (answered by josgarithmetic)
hi can someone please help? thanks
A 300 g sample of thorium-234 has a half-life of 24... (answered by jim_thompson5910)
The following table shows the amount of polonium in milligrams remaining after x days... (answered by ankor@dixie-net.com,stanbon)
A radioactive isotope has a half-life of 3000 years. If a sample of this isotope... (answered by Edwin McCravy)
The half-life of a certain radioactive material is 32 days. An initial amount of the... (answered by ankor@dixie-net.com)
Iodine-131 is a radioactive material used to treat a certain types of cancer. Iodine-131... (answered by ankor@dixie-net.com)