Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 2 - Atoms, Molecules, and Ions - Exercises: 44

Answer

Mendeleev's formula proposes that the mass of Indium is 114.8 amu. The second formula proposes that the mass of Indium is 76.54 amu.

Work Step by Step

We begin by calculating Mendeleev's propose mass for indium. Because for every gram of oxygen, there are 4.784 grams of indium, the total mass of indium in indium oxide ($In_2O_3$) is 4.784*(3*16.00) = 228.632. This mass is composed of two indium atoms; therefore, the atomic mass of one indium atom is $228.632/2=114.8$ amu. The second formula is $InO$. Because for every gram of oxygen there are 4.784 grams of indium, and the compound contains 16 grams of oxygen to begin, we have $4.784*16=76.544$ grams of indium in indium oxide. This mass is composed of one indium atom; therefore the atomic mass of indium for the second formula is $76.54$ amu.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.