Question

Bismuth-214 has a half-life (50%) of approximately 20 minutes. Find the amount of Bismuth-214 left

from a 40-gram sample after 2 hours.

Answer 1

Answer: 3.36

Explanation:

f(x)=214(1-.50)^6 6= amount of times 20 min goes into 2 hrs

f(x)=214(.50)^6

.5^6=.0157

f(x)=214(.0157)

3.36

Answer 2

la verdad no se la respuesta perdón