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[Solved]: Strontium- 90 has a half-life of 28 days. (a) A s
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(Solved): Strontium- 90 has a half-life of 28 days. (a) A sample has initial mass of 50 mg . Find a formula f ...


Strontium- 90 has a half-life of 28 days. (a) A sample has initial mass of 50 mg . Find a formula for the mass remaining after

t

days,

y(t)

.

y(t)=

(b) Find the mass (in mg ) remaining after 20 days. (Round your answer to one decimal place.) mg (c) How long does it take (in days) the sample to decay to a mass of 2 mg ? (Round your answer to the nearest day.) days



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