A chemist added 3.15 grams of HNO3 to a solution of the same acid with concentration of 9 mol/L. dilutes the resulting solution up to the 100ml volume. The resulting solution will have what concentration?

Answer 1

mols solid HNO3 = grams/molar mass = ?
How much of the 9 M HNO3 did you use?
Are you neglecting the volume of the 3.15 g HNO3?
Did you make up this problem yourself or did it come to you by another path?