Mathematics, 21.06.2019 14:10, sebastianapolo5

# 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?

Answers: 2

Physics, 20.08.2019 23:20, nofer

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)

Answers: 2

Mathematics, 09.11.2019 06:31, isabellamoneill

An element with a mass of 680 grams decays by 24.2% per minute. to the nearest minute, how long will it be until there are 10 grams of the element remaining? (im in 9th grade)

Answers: 1

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, h...

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