Iodine-131 has a half-life of 8 days. How much would be left of an original 40 g sample after 40 days? a) 32g
b) 8g
c) 131g
d) 1.25g
e) 0.8g​

d) 1.25 g

Step-by-step explanation:

If it has a half life of 40 days, there will be 5 half-lives in that span of time so if you divide 40 by 2, 5 times or just , it will equal 1.25.

it happens during combustion and impacts the environment because the plants and trees take in that and it can cause them to die.