Author Question: Exposure to radioactive material is considered safe after 10 half-lives because A) less than a ... (Read 25 times)

tiffannnnyyyyyy · **on:** Aug 27, 2018

Exposure to radioactive material is considered safe after 10 half-lives because

A) less than a tenth of 1 of the material remains.
B) less than 12.5 of the material remains.
C) ten is an even number.
D) all of the material will have decayed at that time.

Question 2

Polyunsaturated fats have

A) primarily CC bonds.
B) a large proportion of C C bonds.
C) one or more C C bonds.
D) an odd number of carbon atoms.