1. Copper(II) acetate containing "Cu is used to study brain tumors. This isotope has a half-life of 12.7 hours. If you begin with 25.0 µg of “Cu, what mass remains after 63.5 hours? 2. lodine-131 is used to treat thyroid cancer. (a) The isotope decays by ß-particle emission. Write a balanced equation for this process. (b) Iodine-131 has a half-life of 8.04 days. If you begin with 24 ug of radioactive 1311, what mass remains after 40.2 days?

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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1. Copper(II) acetate containing "Cu is used to study brain tumors. This isotope
has a half-life of 12.7 hours. If you begin with 25.0 µg of “Cu, what mass
remains after 63.5 hours?
2. lodine-131 is used to treat thyroid cancer.
(a) The isotope decays by ß-particle emission. Write a balanced equation for
this process.
(b) Iodine-131 has a half-life of 8.04 days. If you begin with 24 ug of
radioactive 1311, what mass remains after 40.2 days?
Transcribed Image Text:1. Copper(II) acetate containing "Cu is used to study brain tumors. This isotope has a half-life of 12.7 hours. If you begin with 25.0 µg of “Cu, what mass remains after 63.5 hours? 2. lodine-131 is used to treat thyroid cancer. (a) The isotope decays by ß-particle emission. Write a balanced equation for this process. (b) Iodine-131 has a half-life of 8.04 days. If you begin with 24 ug of radioactive 1311, what mass remains after 40.2 days?
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