General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 21 - Chemistry of the Main-Group Elements - Questions and Problems - Page 933: 21.178

Answer

Please see the work below.

Work Step by Step

We can find the mass of Al as $15.00g\space Cr_2O_3\times \frac{1 mol\space Cr_2O_3}{15.2g\space Cr_2O_3}\times \frac{2mol \space Al}{1 mol \space Cr_2O_3}\times \frac{26.8g\space Al}{1 mol\space Al}=5.3250g\space Al$
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