Definitions of solution, solute, and solvent. How molarity is used to quantify the concentration of solute, and calculations related to molarity. Example 1: Suppose we had 1.00 mole of sucrose (its mass is about 342.3 grams) and proceeded to mix it into some water. It would dissolve and make sugar water. We keep adding water, dissolving and stirring until all the solid was gone. We then made sure that when everything was well-mixed, there was exactly 1.00 liter of solution. A video made by a student, for a student. Showing how to find the molarity of a substance. Kansas University. Rock Chalk Jayhawk, KU!!!!! IGNORE: Stoichiometry. Biology. Chemistry. How to work. Here is an example of calculating concentration or molality of a solution. In this problem, the concentration of a sucrose solution is found. Molarity units. The units of molar concentration are moles per cubic decimeter.They are noted as mol/dm³ as well as M (pronounced molar ). The molar concentration of solute is sometimes abbreviated by putting square brackets around the chemical formula of the solute, e.g., the concentration of hydroxide anions can be written as [OH⁻]. calculate. The molarity calculator equation. The molarity calculator is based on the following equation: Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol) What is Molality? It is a measure of solute concentration in a solution.Learn about Molality, Molarity & the difference between Molarity & Molality @Byju's. Read 7 answers by scientists with 13 recommendations from their colleagues to the question asked by Bhavya G. on Apr 3, 2017 Find the molar mass of the solute. To calculate the number of moles from the mass or grams of solute used, you must first determine the molar mass of the solute. This can be done by adding together the separate molar masses of each element found in the solution. How to Find Molarity As long as you have a way of measuring the mass of a solute, you can calculate its molarity by measuring the volume of the solution. Be careful here, because molarity is always expressed as moles/liter, so if you measure volume in any other units, you have to convert to liters.