Calculate the concentration, percent or molarity, of the solution when water is added to prepare each of the following solutions: (8.5)
a. 25.0 mL of a 0.200 M NaBr solution diluted to 50.0 mL
b. 15.0 mL of a 12.0% (m/v) K2SO4 solution diluted to 40.0 mL
c. 75.0 mL of a 6.00 M NaOH solution diluted to 255 mL
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