Question

Krypton-85 has a half-life of 10.76 years. How much of a sample of 60 g is left after 53.8
years?

please. help. me. ^^ 50 points to whoever gets it and shows work. and you get brainlest

Answer 1

Answer:

1.875 grams

Explanation:

formula :

N (t) = N0 * (1/2) ^ t/t 1/2

remaining amt = initial amt * (1/2) ^ time/ half life

remaining amt = 60 * (1/2) ^ 53.8/10.76

remaining amt = 60 * (1/2) ^ 5

remaining amt = 1.875