What is the half-life of the radioactive isotope? what mass of the radioactive isotope will be left after three(3) half-lives?

The need activity of the nurse is to suction discharges from the trachea. current treatment approaches in the pressing consideration facilities or crisis offices are corticosteroids and nebulized epinephrine; steroids have demonstrated advantageous in extreme, direct, and even gentle croup. in the clear instances of croup, anti-microbials are not endorsed, as the etiology is viral

1. aspect is nothing really because the answer is right in front of your face