Molarity is 1.5 M and the volume is 2 l; thus The number of moles of NaCl will be given by; Molarity × volume in liters = 1.5 × 2 = 3 moles But 1 mole of NaCl contains 58.5 g/mole Therefore; the mass of 3 moles will be; 3 × 58.5 = 175.5 g The mass of NaCl is therefore 175.5 g
