An isotope of cesium-137 has a half-life of 30 years. If 5.5 grams of cesium-137 disintigrates over a period of 105 years, how m

Question

3 years ago

13

any grams of cesium-137 would remain? Round your answer to the thousandths place.

1 answer:

Olin [163] · Answer 1 · 2022-04-03T12:21:30+03:00

Olin [163]3 years ago

5 0

Answer:

0.484 g

Step-by-step explanation:

N/No = (1/2)^t/t1/2

No = mass of cesium-137 originally present

N= mass of cesium-137 at time t

t1/2= half life of cesium-137

t = time taken

N/5.5=(1/2)^105/30

N/5.5=(1/2)^3.5

N/5.5= 0.088

N = 5.5 * 0.088

N= 0.484 g