What is the molarity of the following solutions?

(a) 2.1 mol KCl in 1.7 L of solution
1 M
(b) 1.04 mol H2SO4 in 335 mL of solution
2 M
(c) 0.944 mol of ammonia in 215 mL of solution
3 M

To be honest about it I don't think you could have done this on a calculator.

M = moles/L. Do that and post your answers.