Question

What are the molarities of each of these solutions?

 

a. A 5.623-g sample NaHCO₃ is dissolved in enough water to make 250.0 mL of solution

 

b. A 184.6-mg sample K₂Cr₂O₇ is dissolved in enough water to make 500.00 mL of solution

 

c. A 0.1025-g sample of copper metal is dissolved in 35 mL of concentrated HNO₃ to form Cu²⁺ ions and then water is added to make a total volume of 200.0 mL.