Question:
In an agricultural experiment, a solution containing 1 mole of a radioactive material ( $\mathrm{t}_{1 / 2}=14.3$ days) was injected into the roots of a plant. The plant was allowed 70 hours to settle down and then activity was measured in its fruit. If the activity measured was $1 \mu \mathrm{Ci}$, what percent of activity is transmitted from the root to the fruit in steady state?
Solution:
