The half-life of radium-226 is 1600 years. Suppose we have a 23-mg sample.

label Algebra
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

(b) Find a function 

m(t) = m0ert
 that models the mass remaining after t years. (Round your r value to six decimal places.) 
m(t) = 
 
Apr 16th, 2015

Using the model for radioactive decay mt = m0 e^-rt:

m0 = 22mg, r =( ln2/1600) = -0.00043
-----------------------------------
A rate cannot be negative.
therefore  r=0.00043 
----------------------------
m(t) = 22e^-0.00043t 


Apr 16th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Apr 16th, 2015
...
Apr 16th, 2015
Sep 20th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer