The quantity of the radioactive material which would remain 2 years from now is; 4 grams.
What is the quantity remaining in 2 years?
Since, it follows from the task content that after two year, the quantity of the radioactive substance decrease by 1 gram. Consequently, it follows from proportion that the quantity remaining in 2 years from now is; 5-1 = 4 grams.
Read more on radioactive material;
https://brainly.com/question/15058562
#SPJ1
