a medical institution request 1 gram of bismuth-214 which has a half life of 20 min. How many grams of bismuth-214 must be prepared if the shipping time is 2 hours.

Answer 1

x (1/2)^(t/20) = 1 , where t is in minutes
so 2 hours = 120 minutes
x(1/2)^(120/20) = 1
x (1/2^6) = 1
(1/64)x = 1

x = 64 g

Answer 2

thank you so much

Answer 3

2 hours are equal to 120 minutes

If 1 gram prapared in 20 minutes, 6 grams will prapared in 120 minutes which is 2 hours.

The answer is 6 grams.