A 0.750 M H2SO4 solution has a density of 1.046 g/mL. Given that the molar mass of H2SO4 is 98.09 g/mol, express the concentration in molality of H2SO4.
a. 6.68 mol/kg
b. 3.34 mol/kg
c. 2.24 mol/kg
d. 1.68 mol/kg