How do you define the concentration units mass percent and molarity? Chemistry Solutions Molarity 1 Answer anor277 Sep 6, 2016 #"Mass percent"# #=# #"Mass of component"/"Mass of compound"xx100%# Explanation: And #"molarity"# #=# #"Moles of solute"/"Volume of solution in litres"# #"Mass percent"# is dimensionless, whereas #"molarity"# has units #mol*L^-1#. Answer link Related questions what is the molarity of 20.0 ml of a KCl solution that reacts completely with 30.0 ml of a 0.400... How can molarity and osmolarity be calculated from mass per unit volume? How can molarity be used as a conversion factor? How high can molarity be? How does molarity change with temperature? How do you find molarity of a solution? What is the molarity of 10 NaOH? What is the molarity of 3 hydrogen peroxide? What is the molarity of a solution that contains 3.2 mol of solute in 0.98 L of solution? What is molarity? See all questions in Molarity Impact of this question 3258 views around the world You can reuse this answer Creative Commons License