Molarity of a solution is 1M. Density of the solution is 1.04g/cc. Molality of the solution will be (molar mass of solute = 40g)

Molarity of the solution = 1MNumber of moles of solute = 1Weight of solute = 1(40) = 40g Volume of the solution = 1000mlDensity of the solution = 1.04g/ccWeight of the solution=Vsolutionx dsolution                                     =(1000x1.04)g                                     =1040gWeight of solvent=Wsolution-Wsolute                                 =(1040-40)g                                 =1000gMolality=nsolutex1000Wsolvent             =1x10001000             =1 m