The half-life of radium-226 is 1600 years. Suppose we have a 23-mg sample.

Algebra
Tutor: None Selected Time limit: 1 Day

(c) How much of the sample will remain after 2000 years? (Round your answer to one decimal place.) 
 mg 

(d) After how long will only 17 mg of the sample remain? (Round your answer to the nearest year.) 

t =  yr

Apr 16th, 2015

c)  9.26 mg

d)  698 yr

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Apr 16th, 2015

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