A stock solution is made by dissolving 66.05 g of (NHâ‚„)â‚‚SOâ‚„ in enough water to make 250 mL the concentration of the new solution? sample of this solution is then diluted to 50.0 mL. Given that the molar mass of (NHâ‚„)â‚‚SOâ‚„ is 13 Use Máµ¢Váµ¢ = MfVf and molarity = moles of solute/liters of solution .
A. 0.400 M
B. 1.60 M
C. 5.00 M
D. 10.0 M