Question

the half-life of sulfur-35 is 87.5 days. How much of a 400 g sample is left after 350 days?

Answer 1

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Answer 2

Answer:

The end amount of sulphur will be 25

Explanation:

Half-life of a material is the time taken for the material to decay and become half of what it is today. in the given question we are given the half-life of sulphur as 87.5 days and amount of  sulphur used is 400 grams applying the formula:-

$N=\frac{\text { elapsed time }}{\text { half life }}=\frac{350}{87.5}=4$

$\text { Ending amount }=\frac{\text {beginning amount}}{2^{n}}=\frac{400}{2^{4}}=25$