Calculate the molality of a 1.53 m aqueous solution of acetone ((CH3)2CO, 58.079 g/mol) given that the density of this solution is 0.9862 g/ml. Insert your answer rounded to 3 significant figures.
a) 2.75 mol/kg
b) 1.56 mol/kg
c) 1.65 mol/kg
d) 3.09 mol/kg