the mole fraction of solute in a solution is equal to select only the best answer: the mass of solute divided by the total mass of solution x 106 the number of moles of solute in 1.0 kg of solvent the number of moles of solute divided by the total moles of solvent and solute the number of moles of solute in 1.0 l of solution the volume of solute divided by the total volume of solution x 106