What is the concentration, in g/L, of a solution containing 0.65 mol HNO3 in 150 mL solution?

Question

Give your answer rounded to nearest whole number, followed by a space and the units.

Answer 1

g HNO3 = mols x molar mass = ?
That is ?g HNO3/150 mL so
?g x (1000/150) = xg HNO3/L.

Answer 2

How do I find the molar maass.