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Author Question: If we start with 1.000 g of cobalt-60, 0.675 g will remain after 3.00 y. This means that the of is ________ y. (Read 50 times)

asan beg

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Question 1

If the decay constant for 131I is 9.98 × 10-7 s-1, calculate the activity of a 1.00 mg sample.
◦ 4.59 × 1012 atoms/s
◦ 4.73 × 1012 atoms/s
◦ 4.61 × 1024 atoms/s
◦ 9.98 × 10-4 atoms/s

Question 2

If we start with 1.000 g of cobalt-60, 0.675 g will remain after 3.00 y. This means that the of is ________ y.
◦ 3.08
◦ 4.44
◦ 2.03
◦ 5.29
◦ 7.65


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Marked as best answer by asan beg on Jul 8, 2021

carolinefletcherr

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asan beg

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Reply 2 on: Jul 8, 2021
Excellent


pratush dev

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Reply 3 on: Yesterday
Gracias!

 

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