Question

radium-226, which has a half-life of 1620 years, is used in medicine for treatment of disease. find the value of k for radium-226. how much of a 100-gram does of radium-226 will remain after 3240 years? round to the nearest gram.

Answer 1

There will be a 25 grams left after 3240 years.

The half-life of Radium-226 is 1620 years. If we divide 3240 by 1620 the answer is 2. So that means the amount of Radium-226 will divide in half twice.

100 / 2 = 50 / 2 = 25