Answered: 4 Al (S) +3O 2(g) 2Al 2 O 3 (s) How…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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4 Al (S) +3O 2(g) 2Al 2 O 3 (s) How many grams of A*l_{2} * O_{3} can be formed from 43.82 g of Al and 95.16 g of O_{2} ? ( Hint : You need to determine which one is the limiting reactant ).

Expert Solution

Step 1

The balanced reaction given is,

$= > 4 A l (s) + 2 O_{2} (g) \to 2 A l_{2} O_{3} (s)$

Given: Mass of Al taken = 43.82 g.

And mass of O₂ taken = 95.16 g.

$S i n c e m o l e s = \frac{M a s s}{M o l a r m a s s} = > M o l e s o f A l t a k e n = \frac{43.82}{27} = 1.623 m o l a p p r o x . A n d m o l e s o f O_{2} t a k e n = \frac{95.16}{32} = 2.97375 m o l .$

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