SOLUTION: Another equation used to determine the decrease in mass, M, in milligrams, of a radioactive isotope after t years is {{{ M=100e^(-0.035t) }}}. How many years will it take a substan
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Question 1113185: Another equation used to determine the decrease in mass, M, in milligrams, of a radioactive isotope after t years is . How many years will it take a substance to degrade from 100 mg to 30 mg?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Another equation used to determine the decrease in mass, M, in milligrams, of a radioactive isotope after t years is . How many years will it take a substance to degrade from 100 mg to 30 mg?
:
log equiv of exponent, find the ln, the ln of e = 1
-.035t = -1.2034
t = 34.4 years
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