BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Iodine-131 is used to treat thyroid cancer.

(a) The isotope decays by β-particle emission. Write a balanced equation for this process.

(b) Iodine-131 has a half-life of 8.04 days. If you begin with 2.4 μg of radioactive 131I, what mass remains after 40.2 days?

(a)

Interpretation Introduction

Interpretation: Equation for Iodine-131 decays by β particle emission has to be written.

Concept introduction:

In beta decay, there will be a lose of electron from nucleus (neutron turns into proton): there will be no change in mass number and atomic number increases by one.

Explanation

The radioactive isotope of Iodine-131 is converted into Xenon-131 by the emission of beta particle. In this nuclear decay atomic number only changed there is no change in atomic mass. In beta decay, there will be a lose of electron from nucleus (neutron turns into proton): there will be no change in mass number and atomic number increases by one. The equation is as follows,

I53131</

(b)

Interpretation Introduction

Interpretation:

The remaining mass of Iodine-131 isotope after 40.2days has to be calculated.

Concept introduction:

Half–life period: It is the time required for the reactant (substrate) concentration to reduce to the one-half of its initial concentration.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

A carefully planned diet has which of these characteristics? a. It contains sufficient raw oil. b. It contains ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What is the structure and function of a chloroplast?

Biology: The Dynamic Science (MindTap Course List)