A dosage of 425 milligrams of ibuprofen is administered, and its half-life in the bloodstream is 1.9 hours. (a) What fraction of ibuprofen will remain after 78 minutes? (b) How much ibuprofen, in milligrams, will remain after three hours?

A dosage of 425 milligrams of ibuprofen is administered, and its half-life in the bloodstream is 1.9 hours. (a) What fraction of ibuprofen will remain after 78 minutes? (b) How much ibuprofen, in milligrams, will remain after three hours?

Chemistry for Engineering Students

3rd Edition

ISBN:9781285199023

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 11.61PAE

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Question

A dosage of 425 milligrams of ibuprofen is administered, and its half-life in the bloodstream
is 1.9 hours.
(a) What fraction of ibuprofen will remain after 78 minutes?
(b) How much ibuprofen, in milligrams, will remain after three hours?

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