42. How would you prepare 1.00 L of a 0.50-M solution of each of the following? A. H2SO4 from “concentrated" (18 M) sulfuric acid B. HCl from “concentrated” (12 M) reagent
C. NiCl2 from the salt NiCl2 6H2O
D. HNO3 from “concentrated” (16 M) reagent
E. Sodium carbonate from the pure solid​