Question

The half-life of a certain isotope is 12 years. How much of a 600 g sample will remain after 36 years?

75 g

150 g

37.5 g

50 g

16.7 g


HELP PLS

Answer 1

36/12= 3 3 IS THE AMOUT OF HALFLIVES

ONE HALF LIFE = 300

TWO HALF LIFE = 150

THREE HALF LIFE = 75

*Divide 600 three times