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This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose we have a 22-mg sample. (a) Find a function m(t) = mo2-t/h that models the mass remaining after t years. m(t) = (b) Find a function m(t) = moe¬rt that models the mass remaining after t years. (Round your r value to six decimal places.) m(t) =

This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose we have a 22-mg sample. (a) Find a function m(t) = mo2-t/h that models the mass remaining after t years. m(t) = (b) Find a function m(t) = moe¬rt that models the mass remaining after t years. (Round your r value to six decimal places.) m(t) =

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter18: Nuclear Reactions
Section: Chapter Questions
Problem 81QAP
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* 87%| 1 PM Thu Nov 12 A webassign.net This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose we have a 22-mg sample. (a) Find a function m(t) = mo2-t/h that models the mass remaining after t years. m(t) = (b) Find a function m(t) = moe¯rt that models the mass remaining after t years. (Round your r value to six decimal places.) m(t) = (c) How much of the sample will remain after 4500 years? (Round your answer to one decimal place.) mg (d) After how many years will only 15 mg of the sample remain? (Round your answer to one decimal place.) yr
Transcribed Image Text:* 87%| 1 PM Thu Nov 12 A webassign.net This exercise uses the radioactive decay model. The half-life of radium-226 is 1600 years. Suppose we have a 22-mg sample. (a) Find a function m(t) = mo2-t/h that models the mass remaining after t years. m(t) = (b) Find a function m(t) = moe¯rt that models the mass remaining after t years. (Round your r value to six decimal places.) m(t) = (c) How much of the sample will remain after 4500 years? (Round your answer to one decimal place.) mg (d) After how many years will only 15 mg of the sample remain? (Round your answer to one decimal place.) yr
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