Question

You have 2,088 grams of a radioactive kind of xenon. How much will be left after 18 hours if its half-life is 9 hours?

So idk.. 18 divied by 9 then.. idk

Answer 1

After 9 hours there will be 2088 / 2 = 1044 grams left

After another 9 hours ( total of 18 hours) there will be 1044 / 2

= 522 grams left