Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

An element with a mass 330 grams decays by 25.5% per minute. how much of the element is remaining after 5 minutes, to the nearest 10th of a gram.

Aradioactive sample of a pure element produces 30240 decays per minute at one point in an experiment and 101.95 minutes later, produces 945 decays per minute. what is the half-life? (ii) what is the decay constant? (iii) what is the mean lifetime of the element? (b) what fraction of a sample of sodium-22 is left after 6.505 yr. (the half-life of sodium-22 is 2.602 yr.) (c) what period of time is required for a sample of radioactive carbon-14 to lose 66.667% of its activity? (the half-life of carbon-14 is 5730 yr)