lodine-131, a radioactive isotope of iodine, has a half-life of 8 days. After 40 days, if 1.5 g of lodine-131 still remains, what is the original amount of iodine-131?

My account
Edit my Profile
Private messages
My favorites

Ask a Question
Questions
Tags
Categories
Ask a Question

Ruiwen asked Jul 23, 2022

284,628 views

21 votes

lodine-131, a radioactive isotope of iodine, has a half-life of 8 days. After 40 days, if 1.5 g of lodine-131 still remains, what is the original amount of iodine-131?

Chemistry
college

Ruiwen asked Jul 23, 2022

by Ruiwen

3.3k points

0 Comments

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Your answer

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

1 Answer

12 votes

Answer:

48g

Step-by-step explanation:

5 half-lives have passed. Therefore the amount was 32 times the current amount.

Ryan Amies answered Jul 29, 2022

by Ryan Amies

2.8k points

0 Comments

Your comment on this answer:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Ask a Question

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

0 Comments

Your comment on this question:

Your answer

1 Answer

0 Comments

Your comment on this answer:

Other Questions