Calculating molarity of this solution requires the variables of solute mass (in kilograms), molecular weight of the solute (in kilograms per mole), and solution volume to be known (in liters). In this example we only have the variables of a mass of .056 kilograms and volume of .959 liters.
Molarity = moles of solute/volume of solution
You do not name the solute, so one can not calculate the moles.
Added:From this, only the MASS concentration (g/L) can be calculated, 56 g / 0.959 L = 58.4 g/LFor the molar concentration (mol/L) one should divide that value by the molar mass of the compound (which is unknown in thisquestion)
It depends what the solute is. There is no way to determine the molarity without knowing that piece of information.