(redirected from half-lifes)Also found in: Dictionary, Thesaurus, Medical, Financial. half-life half-life, measure of the average lifetime of a radioactive substance (see radioactivity) or an unstable subatomic particle. One half-life is the time required for one half of any given quantity ...
Ba has a half life of 18.26 minutes and decays by first order kinetics. How many half lifes wil take for a mole of Ba141 to decay down to one atom? Iodine-125 decays by gamma decay with a half-life of 54.90 days. a. If the initial decay...
Original amount first half life second half life third half life fourth half life 1 ½ ¼ 1/8 1/16 There is 1/16 of the original sample left after 4 half lifes Learning Target: I CAN define half life and apply half life skills to determine...
Let the initial mass be one unit. Mass reamaining =1−78=18 A mass of 1 unit becomes 12 unit 1 half life 12 unit becomes 14 unit in 2nd half life 14 unit becomes 18 unit in 3rd half life ∴ Time taken =3 half lifes =3×20=60days Show More ...
- 《Journal of Biological Chemistry》 被引量: 133发表: 1990年 Establishment of a Memory in vitro Murine IgE Response to Benzylpenicillin and its Resistance to Suppression by Anti-lL-4 Antibody Regulation of a memory IgE antibody response may be different from the induction of a primary response...