"8 g"

# Iodine-131 Is A Radioactive Isotope With A Half-life Of 8 Days. How Many Grams Of A 64 G Sample Of Iodine-131 Will Remain At The End Of 24 Days?

Half-life of 8 days means, that half of it remains after 8 days.

So: After 8 days it´s 64/2=32g, after another 8 days: 32/2=16g and another 8 (then it´s 24) : 16/2=8g.

So: After 8 days it´s 64/2=32g, after another 8 days: 32/2=16g and another 8 (then it´s 24) : 16/2=8g.

8g