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Bismuth-210 has a half-life of 5.0 days. (a) A sample originally has a mass of 800...

Bismuth-210 has a half-life of 5.0 days. (a) A sample originally has a mass of 800 mg.

Find a formula for the mass remaining after t days. y(t) =

(b) Find the mass remaining after 10 days. mg

(c) When is the mass reduced to 1 mg? (Round your answer to the nearest day.)

Math   Calculus   
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Homework Answers

Answer #1

Exponential decay formula

half time

taking log of both sides

(b)

t=10 day

mg

(c)

P=1 mg

days

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