What does half-life represent?[br][br]What do the following represent?[br]first half-life[br]second half-life[br]third half-life[br]and so on...
How long (the interval) it takes for the substance to decay to half of its original mass.[br][br]The first half-life represents the interval it takes for the original amount to be half.[br]The second half-life represents the interval it takes for the remaining to be decreased by half.[br]The third half-life represents the interval it takes for the remaining to be decreased by half.[br]and so on.