Question

PLEASE HELPPPPPPPPPPP a nuclear disaster at Chernobyl in April 1986, approximately 12,600 kg of radioactive iodine-131 was released into the atmosphere. Iodine-131 is know to decay by half every 8 days. How many kilograms of iodine-131 remained after 24 days?

Answer 1

1575 kg

Explanation:

Decay rate formula =

N(t) = No(1/2)^t/t½

No = Initial amount = 12600kg

N(t) = Amount after time t

t½ = half life = 8 days

t = time = 24 days

N(24) = 12600 × (1/2)^24/8

1575kg