Chapter 3.9, Problem 1.1ACP

### Chemistry & Chemical Reactivity

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

Chapter
Section

### Chemistry & Chemical Reactivity

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

# Use the following mass percentages to determine the value of x in a sample of La2-xBaxCuO4: %La = 63.43. %Ba = 5.085, %Cu = 15.69. and %0 = 15.80.

Interpretation Introduction

Interpretation:

The value of x should be identified from the sample of La2-xBaxCuO4.

Concept introduction:

The number moles can be calculated by using following formula,

Numberofmoles =massmolarmass

Explanation

â€‚Â TheÂ givenÂ compoundÂ isÂ La2-xBaxCuO4Molarâ€‰massâ€‰ofâ€‰lanthanamâ€‰=â€‰138.90Molarâ€‰massâ€‰ofâ€‰bariumÂ =â€‰137.32Molarâ€‰massâ€‰ofâ€‰copper=â€‰63.54Molarâ€‰massâ€‰ofâ€‰oxygen=â€‰15.99Numberâ€‰ofâ€‰molesÂ =massâ€‰molarâ€‰massNumberâ€‰ofâ€‰molesÂ ofÂ lanthanamÂ =63.43138.90Numberâ€‰ofâ€‰molesÂ ofÂ lanthanamÂ =0.456Numberâ€‰ofâ€‰molesÂ ofÂ bariumÂ =5.085137.32=0.037Numberâ€‰ofâ€‰molesÂ ofÂ copperÂ =15.6963.54=0.246Numberâ€‰ofâ€‰molesÂ ofÂ oxygenÂ =15

### 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