B) A 7.35% (w/w) Hg(NO3 )2 (324.6 g/mol) solution has a density of 4.3 g/mL. Calculate

i. the molar concentration of Hg(NO3 )2 in this solution.

ii. the molar NO3 concentration in the solution.

iii. ppm Hg2+ in this solution. iv. ppm Hg2+ if 100.0 ml of this solution is mixed with 400.0 ml of distilled water.

C) Describe the preparation of 3.00 L of 3.5 M HClO4 (M. Wt 100.46 gm/mole) from the commercial reagent that is 70 % HCl (w/w) and has density 1.67 g/mL.