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Chem 110A - Prep Chem

Sample Final Exam - Problem 8

Back to Problem 7 --- Continue to Problem 9

 

A cube of Zn that is 1.55 cm on each edge is treated with HCl. The reaction that occurs is:

 

Zn + 2HCl ➞ ZnCl2 + H2

 

If 6.95 L of H2 gas at STP is produced, what mass of Zn remains?