   Chapter 25, Problem 39PS

Chapter
Section
Textbook Problem

Copper(II) acetate containing 64Cu is used to study brain tumors. This isotope has a half-life of 12.7 hours. If you begin with 25.0 μg of 64Cu, what mass remains after 63.5 hours?

Interpretation Introduction

Interpretation: The remaining mass of copper-64 isotope in copper acetate after 63.5hours 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.

Explanation

Given,

Half-life of copper =12.7 hours

Initial concentration of copper-64=25.0μg

Time=63.5hours.

The number of half-life after 63.5hours =Tt1/2=63.512.7=5 half-lives

• The first half-life begin with 25.0μg

25.02=12.5μg

• The second half-life,

12

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

How is imprinting adaptive?

Biology (MindTap Course List)

Give two examples of external innate immunity in humans.

Introduction to General, Organic and Biochemistry

How many autosomes are present in a body cell of a human being? In a gamete?

Human Heredity: Principles and Issues (MindTap Course List) 