Make 250cm₃ of a 314g/dm₃ Solution of Sodium Chloride

-First, find out how many Grams of Solute you need by the Rearranging Formula: Mass= Conc x Volume [314dm₃ x 0.25dm₃] -Now weigh this Mass by pouring the Solution into an Empty Beaker onto a Mass Balance -Then add some Deionised Water, and Stir, until the Solute has Dissolved -Then pour your Solution into a Volumetric Flask, and also add Deionised Water to the Beaker and Stirring Rod to Rinse it out -Top off the Flask with Deionised Water until it reaches 250cm₃, and then Mix it, and there we go, a Solution with 250cm₃, with that Concentration :)