Question

Until roughly 1970, tritium (3H), a radioactive isotope of hydrogen, was a component of fluorescent watch dials and hands. For 3H, t1/2 = 12.3 yr. 3rd attempt FeedbackSee HintSee Periodic Table Assume you have such a watch. If a minimum of 13.0% of the original tritium is needed to read the dial in dark places, for how many years could you read the time at night? Assume first-order kinetics.

Answer 1

So, min ioun13.lH rqpined to has in dack plocs , ho tar tine t, the tenatboton sl 12.3 t 2.303 lea 1DD 6-o50