The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass
. Starting with 195 grams of a radioactive isotope, how much will be left after 6 half-lives? Use the calculator provided and round your answer to the nearest gram.
Half of the starting amount remains after 1 half-life. So after 6 half-lives, the starting amount is halved 6 times, meaning that a 195 g sample would decay down to
