A scientist kept 1,000 grams of a radioactive material in a container. After 66 days, he observed that 125 grams of the radioactive material was left in the container. Based on the observation, which of these is the most likely inference drawn by the scientist?

Question

anonymous · Answer

a. About 500 gram of the material decayed in 33 days.
b. About 500 gram of the material decayed in 44 days.
c. About 62.5 gram of the material will be left in the container after 88 days.
d. About 62.5 gram of the material will be left in the container after 110 days.

anonymous · Answer

all radioactive materials have a specific half life.. that is the time it takes for the sample to exactly reduce to half the initial value.. so

if you took 100 grams of a sample.. which has a half life of 1 minute.. then in 1 minute it would turn 50 grams.. in total 2 minutes it would have turned 25grams.. and so on.. so do you get a clue from this?

anonymous · Answer

tf-.- whats the answer