The half-life of a radioactive kind of europium is 9 years. How much will be left after 18 years, if you start with 40 grams of it ?

asked Feb 21, 2020 63.4k views

4 votes

7.7k points

Please log in or register to add a comment.

4 votes

Answer:There will be 10 grams left because you subtract half of the current amount from it every 9 years.

Explanation:

Tony Blues answered Feb 27, 2020

7.1k points

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

8.4m questions

11.0m answers