Nitric acid is abailable commercially at a concentration of 16M. What volume would you use to prepare 750 ml of a 0.20 M solution?

Answer 1

I am sure that I have answered this one recently.

Anyway you need
750 x 0.20 mmoles of HCl

if you need v ml of 16M HCl, then

v x 16 = 750 x 0.20

I got 9.4 ml

(only 2 sig figs as both 16 M and 0.20 M are to 2 sig figs)