The half-life for thorium-227 is 18.72 days. This means that thorium-227 decays In 2 exponentially at a rate of n per day 18.72 What fraction of its initial radioactivity will remain after 4 days? Round your answer to four decimal places

aniSwere x Question 1 Score on last try: 0 of 12 pts. See Details for more. > Next question The half-life for thorium-227 is 18.72 days. This means that thorium-227 decays In 2 exponentially at a rate of n = 18.72 per day. What fraction of its initial radioactivity will remain after 4 days? Round your answer to four decimal places 0. 1481 X