2 years ago

The half-life of gold-195m is approximately 30.5 seconds.

1 answer:

6 0

The amount of the 12 grams sample of gold-195m having a half-life of 30.5 s that would remain after 41 s is 4.726 g

<h3>How to determine the number of half-lives </h3>

Half-life (t½) = 30.5 s
Time (t) = 41 s

Number of half-lives (n) =?

n = t / t½

n = 41 / 30.5

n = 82/61

<h3>How to determine the amount remaining </h3>

Original amount (N₀) = 12 g
Number of half-lives (n) = 82/61

Amount remaining (N) =?

N = N₀ / 2ⁿ

N = 12 / 2^(82/61)

N = 4.726 g

Learn more about half life:

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