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How much Cu2S is needed to make 299.0 g Cu? (answer in grams) How much SO2 is produced? (answer in grams)

How much Cu2S is needed to make 299.0 g Cu? (answer in grams) How much SO2 is produced? (answer in grams)

Chemistry
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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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How much Cu2S is needed to make 299.0 g Cu? (answer in grams)

How much SO2 is produced? (answer in grams)

Cu,S (s) → + SO,(g) +0,(g) 2Cu (s) So, (g)
Transcribed Image Text:Cu,S (s) → + SO,(g) +0,(g) 2Cu (s) So, (g)
Expert Solution
Step 1

Balanced Reaction

Cu2S(s) + O2 (g) ----> 2Cu(s) + SO2 (g) 

Mass of Cu= 299.0 g

Moles of Cu= (299.0/63.546) mol=4.705mol

Now 

2 mol Cu produced by 1 mol Cu2S

1 mol Cu produced by 1/2 mol Cu2S

4.705 mol Cu produced by (1/2)×4.705 mol Cu2S

Moles = 2.3525 moles

Mass of Cu2S = (159.16×2.3525) g= 374.4g

 

 

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