Physics

Physics, 24.08.2019 08:30, journeyburks07

How many half lives for fluorine 18 occur in 11 mins

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Chemistry, 15.07.2019 01:00, sabrinachambers444

Suppose the half-life of an element is 10 years. how many half-lives will it take before only about 6% of the original sample remains? 3 half-lives 4 half-lives 5 half-lives 6 half-lives

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Mathematics, 01.08.2019 11:40, fsdfsf

The half-life of carbon-11 is 20 min. a sample of carbon-11 has 25 mci. how many half-lives of carbon-11 occur in 1 hour? how much carbon-11 is in the sample 1 hour after the original sample is measured? a. 3 half-lives; 0.313 mci b. 4 half-lives; 1.563 mci c. 3 half-lives; 3.125 mci d. 4 half-lives; 23 mci

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Geography, 30.08.2019 14:30, zitterkoph

Which of these materials will decay the fastest to one-fourth of its original amount? bismuth-212 half-lives 60.5 seconds sodium-24 half-lives 15 hours iodine-131 half-lives 8.07 days radium-226 half-lives 1600 years

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