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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?

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
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
Section: Chapter Questions
Problem 1.1P
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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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