The half-life of `Tc^(99)` is 6.0 hr. The total residual activity in a patient 30 hr after receiving an injection containing `Tc^(99)` must be more than 0.01 `muC_(i)`. What is the maximum activity `("in"muC_(i))` that the sample injected can have?

The half-life of Tc^(99) is 6 h. The activity of Tc^(99) in a patient , 60 h after receiving an injection conataining this radiosotope is at least 0.125 mu Ci. What was the minimum activity (in mu ci) of the sample injected?

The half life of Te^(99) is 6h. The activity of Te^(99) in a patient, 36 h after receiving an injection containing this isotope is 0.125 muci . What was the minimum activity of the sample injected?

The half life of Tc^(99) is 6.0 hr . The delivery of a sample of Tc^(99) from the reactor to the nuclear medicine lab of a certain hospital takes 3.0 hr . What is the minimum amount of Tc^(99) that must be shipped in order for the lab to receive 10.0 mg ?

Half-life period of a radioactive substance is 6 h . After 24 h activity is 0.01 muC , what was the initial activity ?

Half-life period of a radioactive substance is 6 h . After 24 h activity is 0.01 muC , what was the initial activity ?

A human body excreates (removes by waste discharge, sweating, etc,) certain materials by a law similar to radioactivity.If technitium is injected in some form in 24 hours.a patient is given an injection containing Tc^99 .This isotope is radioactive with a half-life of 6 hours. The activity from the body just after the injection is 6 mu Ci . How much time will elapse before the activity falls to 3 mu Ci ?