Calculate the molalities of the following aqueous solutions.
(a) 1.40 M sugar (C12H22O11) solution (density of solution = 1.12 g/mL)
(b) 0.71 M NaOH solution (density of solution = 1.04 g/mL)
(c) 4.64 M NaHCO3 solution (density of solution = 1.19 g/mL)