Chem Homework. Help?

Posted on 2017-05-30 18:36:00 in Chemistry by BILL MART

1) A sample of zinc with mass of 15.0 g completely reacts with Cucl2, as shown below. What is the molarity of the ZnCl2 solution formed after this reaction? (Assume a final volume of 175 mL) 

Zn(s) + CuCl2 (aq) -----> ZnCl2 (aq) + Cu (s) 

2) Consider the reaction shown below: 

Mg (s) + 2HCl (aq) ----> MgCl2 (aq) + H2 (g) 

What volume of 1.85 M HCL is required to produce 28.5 L of H2 at STP?

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