What is the molarity of a 1.247 L solution that is made from 21.96 g of NaCl? Answer in units of M.?

Molar mass of NaCl = (22.99 + 35.45) g/mol = 58.44 g/mol
Moles of NaCl dissolved = (21.96 g) / (58.44 g/mol) = 0.3758 mol

Molarity of the solution = (0.3758 mol) / (1.247 L) = 0.3014 M

You'll need to convert the 21.96 g of NaCl into moles. Then divide the moles of NaCl by the 1.247 liters. That will give you units of mol/L, which is equivalent to M.