   # Verify that the atomic weight of lithium is 6.94, given the following information: 6 Li, mass = 6.015121 u; percent abundance = 7.50% 7 Li, mass = 7.016003 u; percent abundance = 92.50% ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 2, Problem 21PS
Textbook Problem
5 views

## Verify that the atomic weight of lithium is 6.94, given the following information:6Li, mass = 6.015121 u; percent abundance = 7.50%7Li, mass = 7.016003 u; percent abundance = 92.50%

Interpretation Introduction

Interpretation:

The atomic weight 6.94 of lithium has to be checked if the one isotope (6Li ) has a mass of 6.015121u in an abundance 7.50% and other isotope (7Li) has a mass of 7.016003u in an abundance of 92.50%.

Concept Introduction:

Equation for atomic weight is,

average weight=(%abundanceisotop-1100)×(massofisotop-1) +(%abundanceisotop-2100)×(massofisotop-2)+etc

### Explanation of Solution

There are two isotopes for lithium atom.

The mass of isotope-1 (6Li) is 6.015121u and its abundance is 7.50%

The mass of isotope-2 (7Li) is 7.016003u and its abundance is 92.50%

Equation for atomic weight is,

atomic weight=(%abundanceisotop-1100)×(massofisotop-1) +(%abundanceisotop-2

### 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

Find more solutions based on key concepts
Today, an estimated 69 percent of the adults in the United States are overweight or obese.

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

How does an ionic bond form?

Biology: The Dynamic Science (MindTap Course List)

In Figure OQ32.4, the switch is left in position a for a long lime interval and is then quickly thrown to posit...

Physics for Scientists and Engineers, Technology Update (No access codes included) 