Transcribed Image Text:An isotope of sodium has a half-life of 20 hours. Suppose an initial sample of this
isotope has mass 10 grams. Which expression gives the amount of the isotope (in
grams) remaining after t hours?
(Note: We’re assuming exponential decay here. Use the exponential decay function.)
10(1.035 264924)*
A.
B. 10(.965936329)*
C. 20(1.071773462)t
D.
20(0.9330329915)*
E. None of these
isotope has mass 10 grams. Which expression gives the amount of the isotope (in
grams) remaining after t hours?
(Note: We’re assuming exponential decay here. Use the exponential decay function.)
10(1.035 264924)*
A.
B. 10(.965936329)*
C. 20(1.071773462)t
D.
20(0.9330329915)*
E. None of these
