Y=

2) lodine-131 has a half-life of about 8 days. Find the amount left

from a 30-gram sample after 40 days.

Question

Mathematics

Bryant

24 May, 12:26

Y=

2) lodine-131 has a half-life of about 8 days. Find the amount left

from a 30-gram sample after 40 days.

+3

Answers (1)

Know the Answer?

Roy Bradshaw · Answer 1

15/16 gram

Step-by-step explanation:

40 days represents 40/8 = 5 half-lives. That is, the quantity remaining is (1/2) ^5 = 1/32 of the original amount, so is ...

(30 g) / 32 = 15/16 g

Y=2) lodine-131 has a half-life of about 8 days. Find the amount leftfrom a 30-gram sample after 40 days.

Y=

2) lodine-131 has a half-life of about 8 days. Find the amount left

from a 30-gram sample after 40 days.