A rock sample containing an isotope with a half-life of 12 million years has an initial mass of 72 grams. How much of the daughter isotope will be present after three half-lives?

A)4.5 grams
B)9 grams
C)18 grams
D)54 grams
E)63 grams


E

Environmental & Atmospheric Sciences

You might also like to view...

In the figure below, a tectonic terrane is shown at

A. ocean plateau. B. linear island chain. C. continental fragment. D. island arc. E. All of these.

Environmental & Atmospheric Sciences

Briefly describe how the Coriolis effect influences air movement

What will be an ideal response?

Environmental & Atmospheric Sciences

Lead, mercury and plutonium are these that have a tendency to accumulate in organisms.

A. radioactive metals B. heavy metals C. native metals D. precious metals

Environmental & Atmospheric Sciences

Phytoplankton are: a. less important to the productivity of the ocean than seaweeds

b. residents primarily of the disphotic zone. c. heterotrophs. d. the base of the marine food web.

Environmental & Atmospheric Sciences