A radioactive isotope has a half-life of 173 days. How much of a sample of 100 grams of the isotope would remain after 732 days?
回答 (4)
2017-01-11 12:56 am
No. of half-lives = 732/173
Mass remains after 732 days = (100 g) × (1/2)^(732/173) = 5.32 g
Mass remains after 732 days = (100 g) × (1/2)^(732/173) = 5.32 g
2017-01-11 12:53 am
n, number of half-lives, = 732 / 173 <<< us a calculator
A = (100g) X (1/2)^n << sub n from above, then use the calculator again
A = (100g) X (1/2)^n << sub n from above, then use the calculator again
2017-01-11 1:16 am
11.81 grams
2017-01-11 1:04 am
In my study it at 7 months the half life or any other type of radioactive life remains radioactive just changing from one form to another from the point where the original frequency flashed into multiplying cells by isotopic baby birthing..Radiation is an unknown species of frequency and argumentation opinions rarely agree to any unknown recorded norm
參考: Eddie Cantor and George Jessel
收錄日期: 2021-04-18 15:57:34
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