We appreciate your visit to A soil sample near Chernobyl was found to contain 187 kBq m 2 of cesium 137 If the half life of cesium 137 is approximately. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
After 90 years, approximately 9.25% of the initial amount of cesium-137 will remain in the sample.
Cesium-137 is a radioactive isotope that has a half-life of approximately 30 years. The half-life of a radioactive isotope is the amount of time it takes for half of the initial amount to decay.
In the case of the soil sample near Chernobyl, it was found to contain 187 kbq/m2 of cesium-137.
- After 30 years, half of the initial amount of cesium-137 will remain in the sample, meaning the remaining amount would be 93.5 kbq/m2.
- After 60 years, half of the remaining amount from 30 years will decay, leaving 46.75 kbq/m2.
- After 90 years, approximately 9.25% of the initial amount of cesium-137 will remain in the sample, or approximately 17.19 kbq/m2.
Learn more about radioactive isotopes here:
https://brainly.com/question/18640165
#SPJ4
Thanks for taking the time to read A soil sample near Chernobyl was found to contain 187 kBq m 2 of cesium 137 If the half life of cesium 137 is approximately. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!
- Why do Businesses Exist Why does Starbucks Exist What Service does Starbucks Provide Really what is their product.
- The pattern of numbers below is an arithmetic sequence tex 14 24 34 44 54 ldots tex Which statement describes the recursive function used to..
- Morgan felt the need to streamline Edison Electric What changes did Morgan make.
Rewritten by : Barada
Final answer:
After 90 years, which is three half-lives for cesium-137 with a half-life of approximately 30 years, the remaining amount of cesium-137 in the soil sample would be 23.375 kBq/m2.
Explanation:
To calculate the remaining amount of cesium-137 (137Cs) after a given period, we can use the concept of half-life, which is the time required for a quantity to reduce to half its initial value. In the case of 137Cs with a half-life of approximately 30 years, after 90 years, which is equal to three half-lives (90 years ÷ 30 years/half-life = 3 half-lives), we can apply the formula:
Remaining amount = Initial amount × (1/2)number of half-lives
Let's calculate:
Remaining amount of 137Cs after 90 years = 187 kBq/m2 × (1/2)3
After calculating:
Remaining amount of 137Cs after 90 years = 187 kBq/m2 × (1/8)
Remaining amount of 137Cs after 90 years = 23.375 kBq/m2
Therefore, 23.375 kBq/m2 of cesium-137 will remain in the sample after 90 years.
