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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
21 Dec 2021

Given information

We are given that an isotope of sodium, , has a half-life of 15 hours and a sample of this isotope has mass  .

Step-by-step explanation

Step 1.

is halved every hours. The initial mass is .

 
From the pattern above, it appears that the mass remaining after $t$ hours is
 

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