If the half-life of Au-205 is 4.8 minutes, what fraction of the sample will be left after 14.4 minutes?
a.) 1/2
b.) 1/4
c.) 1/8
d.) 1/16

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

Compare and contrast physical changes with chemical changes.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg